Tap assembly and waste grate

Abstract

A tap body (112) has fluid communication channel (110) extending between an inlet (102) and an outlet (104), a waste outlet (120) for attachment to a sink (302) to allow waste water to drain from the sink, and the fluid communication channel is adapted to extend through the waste outlet in use. An optional waste grate (200) is adapted to support the fluid communication channel in use.

Description

[0001] TAP ASSEMBLY AND WASTE GRATE

[0002] TECHNICAL FIELD

[0003] The technical field of this disclosure relates to a tap assembly, a sink assembly, and a method of assembling a tap assembly.

[0004] BACKGROUND

[0005] Taps are commonplace and can be found in homes and offices throughout the world. They are used to dispense hot and / or cold water into a receptacle such as a sink or bathtub.

[0006] Taps comprise a tap body and commonly also a spout. Sometimes the spout maybe integrally formed with the tap body as a single article. Typically, water is supplied through one or more inlet pipes that enter through the bottom of the tap body, and water is then dispensed through the spout. One or more handles are attached to a respective valve to control the flow of water through the tap. Some taps use a single handle to mix and control the flow of hot and cold water from the tap.

[0007] The tap body is typically attached to a surface, so that the water inlet is hidden below the surface and so that the tap spout protrudes from the surface.

[0008] The tap may be attached to a wall (such as in a bathroom), to a flat rear portion of a sink (such as in a hand basin), or to a worktop proximal to a sink (such as in a Belfast-style kitchen sink). Typically, the sink, or other water receptacle such as a bath, will include a waste outlet at a lowest point, that is operable to allow water to flow out of the sink / receptacle and out through a waste pipe. The waste outlet typically comprises a grate to trap larger items, such as spoons or jewellery, to prevent them from accidentally falling into the waste pipe. The waste outlet and pipe may be referred to as a drain outlet, or as portion of the drain pipe.

[0009] Typically, the handle(s) to control the valve(s) are also positioned on the base of the tap below the spout, above where the tap body is fixed to the worktop surface, such that the handle(s) are visible and accessible above the surface. In some taps, the handle(s) to control water flow are mounted separately to the tap. For example, in expensive bathrooms, the control handles for a bath tap may be wall mounted, separately to a spout that extends from a wall or from a surface of a bathtub, and these handles control the flow of water from the spout.

[0010] Commonly, taps are found in kitchens, bathrooms and throughout the home, and are also found in commercial or office environments, for example in kitchen areas of an office, or in a workshop.

[0011] SUMMARY

[0012] According to at least some examples, there is provided a tap assembly for a sink, the tap assembly comprising: a drain outlet for attachment to the sink to allow waste water to drain from the sink; a tap body having an inlet for receiving water from an inlet pipe and an outlet for delivering water to a tap spout, the tap body defining a fluid communication channel extending between the inlet and the outlet;and an elongate tap spout for directing water from the outlet of the tap body into the sink; wherein the fluid communication channel extends through at least a portion of the drain outlet through which waste water drains from the sink, in use; and wherein the inlet passes through and is rigidly supported by a side wall of the drain outlet.

[0013] The tap assembly allows a simpler installation than prior tap assemblies, since neither the sink nor the countertop needs to be drilled or modified to secure the tap body and tap spout, which together form the tap. The tap assembly can be provided pre-installed or pre-assembled as a unit comprising a tap body and drain outlet integrated together, thereby simplifying installation, since installing the drain outlet results in the tap body also being installed. The tap spout may be provided separately, pre-assembled, or pre-integrated with the tap body. In other words, with such an integrated pre-configured unit, no additional step of attaching the tap to a surface is required. Furthermore, as an alternative the tap assembly can be provided pre-installed in a sink to be installed in or on a surface, such as a top surface of a bathroom cabinet or a kitchen worktop.

[0014] Since the tap body is configured to extend through a portion of the drain outlet through which waste water drains from the sink, in use, the sink can be larger, since no flat portion of the sink is required for the attachment of the tap. Alternatively, in other installations, more counter-top space may be made available, by removing the need to attach the tap to the countertop, since it may be integrated with the drain outlet. This may be particularly beneficial in installations with a shallow depth of worktop, or in installations where worktop space is at a premium (such as in a campervan, motorhome, airplane or boat), or where countertops are commonly used for another purpose and an unobstructed countertop is therefore desirable.

[0015] The tap assembly may prevent damage to countertops, since water that would otherwise run down the spout, and sit on the countertop causing damage over time, can instead run out of the drain outlet.

[0016] Furthermore, the tap assembly may enable plumbing standards to be upheld, while enabling a smooth flow of water through the tap body and spout and a vertical, natural drainage. Leakage may also be reduced. In fact, such a construction may reduce damage from leakages along the tap body and tap spout, because any water leaked from the parts of the tap body that are positioned in the drain outlet or from the parts of the tap body and tap spout that are positioned in the sink, in use, will drain through the drain outlet, rather than into a space that is not suitable for providing drainage.

[0017] As the inlet is rigidly supported by a side wall of the drain outlet, the fluid communication channel may be said to be adapted to be supported by the drain outlet in an assembled configuration. This may enable the fluid communication channel to be firmly supported with respect to the sink in which the drain outlet is installed. Rigid support between a side wall and the inlet may be referred to as mechanical support, in that the inlet and tap body are held in a particular location and orientation relative to the drain outlet and therefore the sink by the drain outlet. Such rigid support may include the inlet being securedto the drain outlet at the side wall. Such securing may be achieved using a mechanical fixing and / or a chemical fixing. The inlet may be provided flush with the side wall.

[0018] By having rigid support between the side wall and the inlet, the tap assembly may be said to be adapted to limit or prevent a relative motion between the drain outlet and the fluid communication channel in the assembled configuration. Particularly, the drain outlet and inlet may be said to be adapted to limit or prevent a relative motion therebetween. The drain outlet may limit or prevent relative motion of the inlet relative to the drain outlet in a direction that is parallel to the side wall and / or in a direction that is perpendicular to the side wall. For example, when in an assembled configuration, i.e., in the installed position within a sink, the fluid communication channel may be supported by the drain outlet and / or a waste grate that sits between the drain outlet or the sink and the fluid communication channel. This support may serve to limit a lateral side to side motion or backwards-and-forward motion of the fluid communication channel with respect to the drain outlet, or may serve to limit an up-and-down vertical motion of the fluid communication channel with respect to the drain outlet. The tap body may be integrally formed with the drain outlet. This may minimize relative movement therebetween.

[0019] The inlet may be sealed against the side wall, which may be a hermetic sealing. The inlet may be sealed against the side wall by a seal between the inlet and the side wall or by the inlet being integrally formed with the side wall. Water may be prevented from passing through the side wall by the inlet being sealed against the side wall. The sealing may contribute to the inlet being rigidly supported by the side wall.

[0020] As the inlet is rigidly supported by the side wall, the fluid communication channel can be said to be rigidly supported by the side wall. In examples, the fluid communication channel may be said to be rigidly supported by side wall of the drain outlet along its length as it extends through the drain outlet from the inlet to the outlet.

[0021] The drain outlet may be referred to as a waste outlet. Where a waste outlet is referred to, the waste outlet may include a waste channel. Alternatively, the drain outlet can be said to or may comprise a waste outlet. The waste outlet may be adapted to be attached to the sink at a first end. The waste outlet may be adapted to be attached to a waste channel at a second end. The inlet may pass through and may be rigidly supported by a side wall of the waste outlet. In such an example, the portion of the drain outlet through which the fluid communication channel extends may comprise a portion of the waste outlet.

[0022] The tap spout may be a rigid or flexible tap spout. The tap spout may be described as elongate by having a width that is smaller than its length. The tap spout may extend from the tap body into the sink, in use. The tap spout may be longer than a height of the sink. The tap spout may direct water from the outlet into the sink via a second fluid communication channel extending from an inlet of the tap spout, which connects to the outlet of the tap body, to an outlet of the tap spout. The tap spout may comprise a single fluid communication channel. The tap spout may form a conduit for water.The tap spout may be rigid and may direct water in a direction that is towards the drain outlet. In other words, water may flow along the fluid communication channel in a first direction into the tap spout, and the tap spout may redirect the water to flow in a second direction, into the sink. The second direction may be opposite the first direction. The second direction may be a direction in which waste water drains from the sink into the drain outlet, in use, and / or a direction in which waste water flows through the waste outlet of the drain outlet, in use. The tap spout may provide a free-falling flow of water towards the waste outlet.

[0023] By 'extending through', it is meant that at least part of the fluid communication channel is provided in the portion of the drain outlet through which waste water drains, and that the fluid communication channel begins or ends outside of that portion. The fluid communication channel may be said to extend through the drain outlet, in that it begins and ends outside of the drain outlet but that at least part of it is within the drain outlet. Furthermore, by extending through the portion, waste water drains around or over part of the tap body provided within the drain outlet. The fluid communication channel may extend out of the drain outlet, through an opening through which waste water enters the drain outlet. In examples, at least part of the fluid communication channel may be aligned with an axis of the drain outlet. The fluid communication channel may be aligned with a longitudinal axis of the drain outlet where it extends out of the drain outlet, so that the tap body and the tap spout are positioned substantially centrally within a drain hole of the sink.

[0024] Although in these examples, water and waste water are referred to, the examples may be used with any fluid or liquid. Particularly in sink settings, the drain outlet may receive different waste fluids or liquids. Furthermore, the tap assembly is described as being for use with a sink. A sink may be referred to as a basin, a bowl, a container, or a tub. A sink may be a zero-depth sink. A sink may be integrally formed with a worktop or stand. The tap assembly may be used with other surfaces that direct waste water or waste fluids to a drain hole.

[0025] The tap body may be adapted so that the inlet and outlet of the tap body extend from opposite sides of the drain outlet. This enables a clean and simple installation wherein the tap body extends through the drain outlet and wherein the inlet is accessible on the underside of a sink, below the drain outlet, and the outlet is accessible for use on the top side of a sink, above the drain outlet.

[0026] The waste outlet may comprise a flange at the first end for attaching the waste outlet to the sink. The waste outlet may comprise a pipe section connected to the flange. The pipe section may be directly connected to the flange or a funnel section may be connected between the flange and the pipe section. The flange may have a central drain hole through which waste water can enter the waste outlet, in use. The central drain hole may have a first diameter and the pipe section may have a second diameter. Where the pipe section connects to the flange directly, the first and second diameters may be the same. Where a funnel section is provided, the second diameter may be smaller than the first diameter, and the funnelsection may have a reducing diameter to connect the pipe section and the flange. The waste outlet may be a straight pipe. The funnel section may comprise a side wall that is angled relative to the pipe section. The side wall may be a non-vertical section of the waste outlet, relative to the sink. Where a funnel section is provided in the waste outlet, the inlet may pass through and be rigidly supported by the funnel section. The drain outlet may comprise other non-vertical or angled side walls. The inlet may pass through a nonvertical or angled side wall.

[0027] The drain outlet may comprise a waste outlet and a waste channel. The waste outlet may be attached to the waste channel at the second end. Alternatively, or additionally, the inlet may pass through and may be rigidly supported by a side wall of the waste channel, and the fluid communication channel may extend along the waste outlet. In other words, the portion of the drain outlet through which the fluid communication channel extends may comprise the waste outlet and part of the waste channel.

[0028] The waste channel may comprise a bend or a series of bends to take the waste water away through the plumbing system of the building in which the tap assembly is installed. By extending the inlet through the waste channel, the connection for the inlet may be provided at a neater, more convenient or more accessible location than at the waste outlet, and accordingly only one visible connection (that of the waste channel) is required on the underside of the waste outlet.

[0029] For example, the inlet may extend through the waste channel at a point some distance away from where the waste outlet contacts the sink or water receptacle, at which position the inlet may then be accessible at the side wall (or extending through the side wall) of the waste channel. Accordingly, this allows for more convenient connection of a water inlet pipe to the inlet, and the connection point between the two may be made or readily inspected as required.

[0030] The inlet may extend axially through a side wall of the waste channel. That is, the inlet extends through side wall of the drain outlet, at an angle of approximately 90 degrees to the direction of water flow in that portion of the drain outlet. As an example, the inlet may extend through the side wall of the drain outlet at an angle of approximately 90 degrees to a vertical portion of the fluid communication channel, or may extend through the side wall of the drain outlet at an angle of approximately 90 degrees to a vertical portion of the drain outlet. Such a configuration enables a simple and convenient position, at the drain outlet, to connect a water inlet pipe to the inlet of the tap body. For example, the inlet may extend towards a front, or side, of the drain outlet for particularly easy access, or towards a rear side for a particularly clean and neat install wherein the connection is not easily seen.

[0031] The inlet may comprise a screw thread to allow easy connection of a water inlet pipe.

[0032] The inlet may be integrally formed with at least part of the drain outlet. The inlet may be integrally formed with the waste outlet or the waste channel, for example. In examples, the tap body may be a single piece, and so the tap body may be said to be integrally formed with at least part of the drain outlet, such as the waste outlet or waste channel. The waste outlet and waste channel may be integrally formed,in examples. Integrally formed items may be described as being monolithic or having a unibody construction. This may reduce leakage, as there are no gaps between the inlet and the side wall through which water may leak. Furthermore, it may also avoid ingress of waste water into the fluid communication channel. Another benefit is that the rigid support provided by the side wall to the inlet may be enhanced. Movement between the inlet and drain outlet can be reduced by providing integrally formed parts. Such a construction also reduces an amount of maintenance to be performed and / or work required to fit the tap assembly. In some examples, a side wall of the tap body may be formed by at least part of a side wall of the drain outlet.

[0033] The tap spout may be adapted to be releasably attachable to the tap body. A releasable attachment may be provided on the tap body and / or the tap spout.

[0034] A tap body may be formed as a single piece or a single body of material. The tap spout may be provided separately, as in the releasably attachable example described above, or may be integrally formed with the tap body. In other examples it may be attached to and removed from the tap body. This may make installation simpler, particularly where the tap spout has a bend (which could make it difficult to fit the tap assembly to a sink).

[0035] Alternatively, the tap body may be formed as a rigid body, but may comprise one or more portions. For example, two portions may be soldered together to form a single rigid body formed from different materials.

[0036] The tap assembly may be sold as a kit in which the drain outlet and tap body are integrally formed, the kit also comprising a tap spout that can be connected to the tap body during installation. This kit, with an integrated tap body and outlet but a separate spout, may thus be relatively flat and easy to transport and store. The drain outlet may then be installed in a sink, after which the tap spout then installed into the tap body that is comprised within (and securely positioned with respect to) the drain outlet. Such a configuration also allows quick and simple removal of the tap spout for inspection or maintenance, or if the entire area of the sink is required, for example for soaking large items.

[0037] A variety of interchangeable tap spouts may be provided with different characteristics. For example, a particularly long tap spout may be used where large (tall) items are being washed, and then replaced with a shorter spout when this feature is not required. A spout with a wide sprinkle head may be interchanged with a tap spout with a concentrated water flow as required by the user. Furthermore, the tap spout may be removed easily for cleaning or replacement if damaged.

[0038] The tap spout may be adapted to rotate relative to the tap body around a longitudinal axis. The tap spout may be adapted to freely rotate relative to the tap body. The longitudinal axis may extend substantially vertically when the tap body is installed. This feature provides simple and convenient operation since the tap spout can be moved within the sink area.The tap assembly may have a waste grate. The waste grate may be configured to brace the tap body against the sink or to brace the tap body against the drain outlet, in use. By bracing the tap body, the waste grate may be configured to limit, restrict, or prevent side-to-side movement or flexing of the tap body within the drain outlet. The tap body may be braced by the waste grate being in contact with the sink, in use, or by restricting movement of the tap body relative to the sink. Similarly, the waste grate may extend to be in contact with or may connect to the drain outlet, or may restrict movement of the tap body relative to the drain outlet. Movement of the tap body may be restricted by the waste grate providing a smaller diameter hole through which the tap body passes, or by extending from the tap body and restricting a functional distance between the sink or drain outlet and the tap body. The waste grate may fit around the tap body (and / or tap spout if a spout is provided) and brace the tap body against an inner wall of the drain outlet. This provides a more rigid structure, and the drain outlet thus serves a further technical purpose beyond straining waste water and capture of items exceeding a size threshold. The waste grate may engage the tap spout to brace the tap body. The waste grate may be adapted to rigidly secure the tap body to the drain outlet in the assembled configuration. The waste grate may rigidly secure the tap body to the waste outlet of the drain outlet. A fixing mechanism may be provided on the waste grate and the waste outlet to rigidly secure them together.

[0039] The waste grate may be adapted to engage with an outer portion of the tap body and / or the tap spout. For example, the waste grate may comprise threads that engage with co-operating threads on a portion of the tap body and / or the tap spout. The waste grate may comprise ribs or protrusions that engage with co-operating ribs or protrusions on a portion of the tap body and / or tap spout. The waste grate may comprise splines that engage with co-operating splines on a portion of the tap body and / or tap spout. Accordingly, a firm and reliable connection may be made between the waste grate and the tap body and relative motion between the tap body and drain outlet may be minimized. The waste grate may be fixed to the tap body or the tap spout. The waste grate may be integrally formed with the tap body or the tap spout.

[0040] The waste grate may comprise a non-marking coating and / or a material to allow the tap body to be well supported. The waste grate may comprise material that exhibits higher friction or that expands when wet. Accordingly, a friction between the waste grate and tap body and / or tap spout may be relative low when the waste grate is dry such that the waste grate may be relatively easy to move over the tap body and / or tap spout when fitting, and yet when the waste grate gets wet, i.e., in use, it may then provide a relatively firmer grip on the tap body and / or spout thus providing greater support in use.

[0041] The waste grate may comprise two or more separate portions. Accordingly, the waste grate may be easier to fit in position since the two or more portions may be introduced from different sides of the tap body and / or tap spout in the vicinity of the drain outlet, rather than having to slide the waste grate over the tap body and / or tap spout to position it between the tap body and / or spout and the drain outlet.The two or more portions may comprise magnetic parts or mechanical features such as grooves and dovetails to allow them to securely fit together.

[0042] The waste grate may be adapted to facilitate a rotation of the tap body and / or the tap spout relative to the drain outlet. For example, the waste grate may have a low friction coating which enables the tap body and / or tap spout to rotate relatively freely with respect to the waste grate whilst still providing lateral support to the tab body and / or tap spout to minimize lateral movement. The coating may be selected so that friction is further reduced when wet, so that rotation is facilitated when the waste grate gets wet. Any suitable material that exhibits these properties may be used. In other words, the waste grate may be adapted to vary an ease of movement of the tap body relative to the drain outlet according to a wetness of the waste grate. An ease of movement may be varied in an inverse relationship, so that greater wetness results in a lower ease of movement.

[0043] Rotation of the tap body and / or the tap spout may actuate a tap valve, preferably integrated within the tap body and / or the tap spout, such that the flow of liquid is controlled by rotating the tap spout and / or the tap body. The tap valve may be controlled by relative rotation of upper and lower parts of the tap spout and / or tap body, and may comprise for example a rotary valve such as a scissor or disc valve, or an axial valve such as a poppet valve or actuator valve. For valves that require vertical motion to open and close, there may be provided a mechanism, such as a screw or cam mechanism, for converting the relative rotation to a vertical motion in the valve.

[0044] Rotation of the tap spout and / or tap body may be restricted so that liquid can only flow out of the tap spout in desired positions thereof.

[0045] The drain outlet or waste outlet may include a side port or connector so that a waste pipe or recirculation pipe may be connected to the side of the drain outlet or waste outlet. This may provide a more compact connection option and / or may facilitate connection to a pump for example for recirculation of water from the drain outlet to the spout inlet. In some examples, the drain outlet or waste outlet has a side port and a bottom port, each of which are closable while the other is connected, so that the drain outlet or waste outlet is configurable for either bottom or side connection.

[0046] The tap assembly may comprise more than one inlet to allow the tap assembly to supply both hot and cold water or a mix of hot and cold water. The hot and cold water or mix may be supplied via two outlets or via a single outlet. The tap assembly may comprise a valve to allow mixing of the hot and cold water. The valve may be provided outside of or inside the drain outlet.

[0047] According to another aspect, there is provided a waste grate for a drain outlet adapted to rigidly secure a tap body to a drain outlet.

[0048] Such a waste grate comprises technical features not found in a conventional waste grate. In addition to its normal role as a strainer, the waste grate provides an additional support function. Accordingly, in some examples, the waste grate is adapted to securely and snugly fit around a tap assembly to providethe necessary support. Since the waste grate is specially configured to brace the tap body to the drain outlet, the tap body thus is secured to the drain outlet, since it cannot easily be moved. Additional waste grates with different technical characteristics may be supplied with the tap assembly or such waste grates may be sold separately.

[0049] According to another aspect, there is provided a sink assembly comprising a tap assembly as described herein. Optionally, components of the sink assembly may be provided readily assembled, for example the drain outlet may be provided pre-attached to the sink. The sink assembly may be configured with a lid and the tap assembly can be folded down within the volume of the sink assembly, or alternatively the sink spout can be removed and placed within the sink or attached to the lid. Thus, the lid of the sink assembly can be closed, providing a clean worktop with no protrusions. Such examples may be suited to places where there is minimal space and where worktop space is at a premium, such as in confined spaces such as campervans, boats or airplanes.

[0050] Further, by providing the components in a kit form they can be assured to be compatible. The kit may comprise a waste channel specially adapted to provide a connection to the inlet of the tap assembly. This may be provided at a side wall of the waste channel, or the inlet may extend through a side wall of the specially-adapted waste channel.

[0051] According to another aspect, there is provided a method of assembling a tap assembly for a sink , the method comprising providing a drain outlet; providing a tap body having an inlet for receiving water from an inlet pipe and an outlet for delivering water to a tap spout, the tap body defining a fluid communication channel extending between the inlet and the outlet; providing an elongate tap spout for directing water from the outlet of the tap body into the sink; positioning the fluid communication channel to extend through at least a portion of the drain outlet through which waste water drains from the sink, in use; passing the inlet of the tap body through a side wall of the drain outlet; and rigidly supporting the inlet by the side wall of the drain outlet.

[0052] Such a method results in a tap assembly with the many benefits listed herein. Such a method is quicker and simpler than existing installation methods since the fluid communication channel may be provided integrally formed with the drain outlet, and thus installation requires installation of the outlet to the sink without a separate step of securing the fluid communication channel in a position proximal to the sink. Where the fluid communication channel and drain outlet are not integrally formed, the two may be attached together during assembly. For example, the inlet end of the tap assembly may be fed through the drain outlet and secured thereto.

[0053] According to an aspect, there is provided a method of manufacturing a tap assembly for a sink, the method comprising: integrally forming an inlet of a tap body and at least a portion of a drain outlet; forming a remainder of the tap body, a remainder of the drain outlet, and a tap spout, and connecting the remainder of the tap body, the remainder of the drain outlet, and the tap spout to the integrally formedinlet and portion of the drain outlet. The method may comprise integrally forming the tap body and the portion of the drain outlet so that there is no remainder of the tap body. The method may comprise integrally forming the tap body and the drain outlet so that there is no remainder of the drain outlet. The method may comprise integrally forming the tap spout with the tap body. Integrally forming any of the components herein may be performed using 3D printing or using a casting technique.

[0054] The method of assembly and / or the method of manufacturing may comprise providing the tap assembly with any of the other features disclosed herein, e.g. for the tap assembly of the above aspects or the tap assembly of the aspects described below.

[0055] According to some examples, there is provided a tap assembly comprising a tap body comprising a fluid communication channel extending between an inlet and an outlet, the tap assembly also comprising a waste outlet for attachment to a sink to allow waste water to drain from the sink, wherein the fluid communication channel is adapted to extend through the waste outlet in use.

[0056] In some aspects, the tap assembly may comprise a tap body and a drain outlet, such as a waste outlet, only.

[0057] In examples, the waste outlet comprises a waste outlet upper for attachment to the sink at an upper end, and a waste outlet lower housing for attachment to a lower end of the waste outlet upper via a connector such as a screw thread, the waste outlet lower housing being connectable to the waste channel at a lower end, wherein the inlet passes through and is rigidly supported by a side wall of the waste outlet lower housing. The connector may permit the orientation of the inlet to be adapted relative to the waste outlet upper, e.g. via rotation. Advantageously this adaptation can be done when fully secured together. The connector may comprise a screw thread, such as a screw thread that comprises two, three, four or more parallel screw threads adapted to permit the orientation of the inlet relative to the waste outlet upper to be adapted when fully secured together.

[0058] In examples the inlet comprises a core base component that is rigidly supported by a side wall of the drain outlet, the tap body is detachable from the core base component, and the tap spout is detachable from the tap body, resulting in a modular tap assembly. Advantageously this modular tap assembly can be easily assembled and disassembled.

[0059] In examples the core base component is detachable from the side wall of the drain outlet.

[0060] In examples, the tap spout is configured to redirect the water through an angle of between 120 and 180 degrees.

[0061] In examples, the tap spout comprises an adaptor configured to adapt one or more of: a flow rate of water from the tap spout; a flow aeration of water from the tap spout; and a spray pattern of the water from the tap spout.

[0062] In examples, the tap spout is detachable from the tap body, and the tap assembly comprises an automatic water shut-off comprising a flow stopping device that is configured to temporarily close anopening within the tap body, such that the automatic water shut-off prevents water from exiting the tap body when the spout is removed from the tap body, and the tap assembly comprises a displacement mechanism that is configured to displace the flow stopping device when the tap spout is attached to the tap body thereby disabling the automatic water shut-off.

[0063] In further examples the opening comprises a constriction, the flow stopping device comprises a ball or sphere, and the displacement mechanism comprises an arm, for example an angled arm, wherein the arm is configured to displace the ball or sphere out of the constriction and against a side of the tap body when the spout is attached to the tap body.

[0064] In further examples, the flow stopping device comprises a hinged valve that is configured to seal the opening, and the displacement mechanism comprises an arm, for example an angled arm, wherein the arm is configured to open the valve away from the spout when the spout is attached to the tap body.

[0065] In further examples, the release component extends longitudinally down a central axis of the tap spout.

[0066] In examples, the inlet comprises a water inlet component that is attachable to the inlet to extend the inlet away from the side wall of the drain outlet by between 10 and 40cm, and more preferably between 20 and 30cm.

[0067] In examples, the tap assembly comprises a sink plug configured to move between open and closed positions, and in the open position, the sink plug allows water to flow between the sink plug and the drain outlet, and, in the closed position, the sink plug seals against the drain outlet and prevents water from flowing between the plug and the drain outlet.

[0068] In examples, the sink plug is resiliently biased to the open position by a spring positioned underneath the sink plug, and the sink plug comprises a skirt that is configured to extend down the outside of the spring to cover and protect the spring.

[0069] In further examples, a rotation of the waste grate is configured to move the sink plug between the open and closed positions.

[0070] In examples, the waste grate comprises a first part and a second part and a plurality of grate openings through which water can flow through the waste grate, wherein the grate openings function to entrain articles larger than the size of the grate openings, and the first part and second part are coaxial and rotatable relative to each other, and a relative rotation of the first part to the second part varies (e.g. reduces) the size of one or more of the grate openings.

[0071] In examples, the core base component has a top wall with an average thickness that is between 20% and 70% of the average diameter of the fluid communication channel extending through core base component, and more preferably between 30% and 50% of the average diameter of the fluid communication channel extending through the core base component.In examples, in a cross sectional view of the core base component along the direction of the fluid communication channel extending through the core base component, the core base component has a tear-drop or pear shape, such that the thickness of the top wall is at least 3 times the thickness of a side wall of the core base component.

[0072] In examples the tap body comprises a tap body lower and a tap body upper, and the tap body upper comprises a constriction having an internal diameter that is smaller than an internal diameter of the tap body lower, and the water shut-off comprises a ball or sphere, wherein the ball is smaller than the internal diameter of a tap body lower and is wider than the constriction in the tap body upper, such that, when water in the tap body lower is pressurised, the ball seals the tap body upper and restricts water flow through the tap body upper, and wherein the tap spout comprises a displacement mechanism adapted to displace the ball from the constriction when the tap spout is attached to the tap body.

[0073] In further examples, the constriction is V-shaped or arcuate. Where it is arcuate, optionally it is of a truncated hemispherical shape, and further optionally has a width corresponding to the width of the ball.

[0074] These and other aspects will be apparent from and elucidated with reference to the example(s) described hereinafter.

[0075] BRIEF DESCRIPTION OF THE DRAWINGS

[0076] For a better understanding, and to show more clearly how aspects may be carried into effect, reference will now be made, by way of example only, to the accompanying drawings, in which:

[0077] Figure 1 shows a perspective view of a sink assembly comprising a tap assembly and a sink according to an example;

[0078] Figure 2 shows a perspective view of a tap assembly according to an example;

[0079] Figure 3 shows a perspective view of a portion of a tap assembly according to an example;

[0080] Figure 4 shows a cross-sectional view of a portion of a tap assembly according to an example;

[0081] Figure 5 shows a cross-sectional view of a portion of a tap assembly according to an example;

[0082] Figure 6 shows a cross-sectional view of a portion of a tap assembly according to an example;

[0083] Figure 7 shows a cross-sectional view of a portion of a tap assembly according to an example;

[0084] Figure 8 shows an exploded view of a tap assembly according to an example;

[0085] Figure 9 shows a cross-sectional view of a portion of a tap assembly according to an example;

[0086] Figure 10 shows a cross-sectional view of two examples (A, B) of tap assemblies that are each configured with different waste plumbing;

[0087] Figure 11 shows a cross-section view of the two examples of sink assemblies (A, B) comprising the tap assemblies of Figure 10;

[0088] Figure 12 shows a perspective view of portions of six examples (A, B, C, D, E, F) of tap assemblies that are configured with different waste plumbing;

[0089] Figure 13 shows a perspective view of three examples (A, B, C) of sink assemblies;Figure 14 shows a cross-sectional view of portions of five examples (A, B, C, D, E) of tap assemblies; Figure 15 shows a cross-sectional view of portions of a further five examples (A, B, C, D, E) of tap assemblies;

[0090] Figure 16 shows a cross-sectional view of portions of a further five examples (A, B, C, D, E) of tap assemblies;

[0091] Figure 17 shows a cross-sectional view of portions of a further five examples (A, B, C, D, E) of tap assemblies;

[0092] Figure 18 shows a cross-sectional view of portions of a further six examples (A, B, C, D, E, F) of tap assemblies;

[0093] Figure 19 shows a cross-sectional view of a portion of a tap assembly according to an example; Figure 20 shows a transparent perspective view of a portion of a tap assembly according to an example;

[0094] Figure 21 shows a perspective cross-sectional view of a portion of a tap assembly according to an example;

[0095] Figure 22 shows a perspective cross-sectional view of a portion of a tap assembly according to an example;

[0096] Figure 23 shows a perspective cross-sectional view of a portion of a tap assembly according to an example;

[0097] Figure 24 shows a perspective cross-sectional view of a waste grate according to an example;

[0098] Figure 25 shows a plan view of four examples (A, B, C, D) of waste grates;

[0099] Figure 26 shows a perspective view of six examples (A, B, C, D, E, F) of sink assemblies;

[0100] Figure 27 shows a series of perspective views (A, B, C) of a sink assembly according to an example; Figure 28 shows a series of perspective views (A, B, C) of a sink assembly according to an example; Figure 29 shows a series of perspective views (A, B, C, D) of a sink assembly according to an example; Figure 30 shows a cross-sectional view of a portion of a tap assembly according to an example; Figure 31 shows a cross-sectional view of a portion of a tap assembly according to an example; Figures 32A to 32F show cross-sectional views and longitudinal views of portions of tap assemblies according to examples;

[0101] Figures 33A and 33B show cross-sectional views of sink assemblies according to examples;

[0102] Figure 34 shows a cross-sectional view of an example in an assembled state;

[0103] Figure 35 shows an exploded cross-sectional view of the example of Figure 34;

[0104] Figure 36 shows the top portion of the Figure 35 in more detail;

[0105] Figure 37 shows the bottom portion of Figure 35 in more detail;

[0106] Figure 38 shows a cross-sectional view of a core base component shown in Figures 34;Figures 39 and 40 show a cross-sectional view of the bottom portion of an example showing how a drain plug can be used to seal the waste outlet. Figure 39 shows the drain plug in a raised (open) position and Figure 40 shows the drain plug in a lowered (closed) position;

[0107] Figure 41 shows a perspective part-sectional view of the example shown in from Figure 39, showing the operation of the drain plug in more detail;

[0108] Figures 42a and 42b show a perspective view of the example shown from Figure 39;

[0109] Figures 43a and 43b show a perspective sectional view of the example shown from Figure 39;

[0110] Figure 44 shows a tap body according to an example;

[0111] Figure 45 shows a perspective view of a single-piece waste grate and the lower portion of a tap assembly according to an example;

[0112] Figures 46a and 46b show perspective views of the waste grate shown in Figure 45, and a variant including a drain plug actuator, respectively.

[0113] Figure 47 shows a perspective view of a two-piece waste grate and the lower portion of a tap assembly according to an example;

[0114] Figures 48a and 48b show perspective views of the waste grate shown in Figure 47, and a variant including a drain plug actuator, respectively;

[0115] Figure 49 shows a perspective view of the two-piece waste grate shown in Figure 47, in a rotated position;

[0116] Figures 50a and 50b show perspective views of the waste grate shown in Figure 49, and a variant including a drain plug actuator, respectively.

[0117] Figure 51 shows a perspective sectional view of a tap body and two piece waste grate of an example in an exploded state, showing how the parts interact.

[0118] Figures 52a to 52c show cross sectional views of a tap body according to an example comprising an automatic shut off feature when the tap spout is removed from the tap body;

[0119] Figure 53 shows a sectional view of the spout shown in Figure 52c, showing the parts in more detail; Figure 54 shows a cross sectional view of an example of a core base component integrated into a waste outlet lower housing;

[0120] Figure 55 shows an axonometric view of another example of a core base component integrated into waste outlet lower housing, the core base component having an angled water inlet;

[0121] Figures 56 to 58 show examples of tap assembly having different water inlet configurations;

[0122] Figures 59 to 61 show an perspective exploded view of an example of tap assembly, where Figure 60 shows a top portion of the example shown in Figure 59 in more detail, and where Figure 61 shows a bottom portion of the example show in Figure 59 in more detail;

[0123] Figure 62 shows a cross-sectional view of an example of tap assembly;

[0124] Figure 63 shows a cross-sectional view of an example of tap assembly;Figure 64 shows a close-up sectional view of a portion of the tap assembly shown in Figure 63; Figure 65 shows a sectional view of a bottom portion of a tap assembly according to an example, showing a side skirt on the drain plug, with the drain plug in a raised position;

[0125] Figure 66 shows the example of Figure 65 with the drain plug in a lowered position;

[0126] Figures 67a-e show cross sectional views of a tap body according to an example comprising an automatic shut off feature when the tap spout is removed from the tap body;

[0127] Figure 68 shows a close up cross sectional view of a portion of a tap body with one example of a water shut off mechanism, having a ball and V-shaped constriction;

[0128] Figure 69 shows a close up cross sectional view of a portion of a tap body with another example of a water shut off mechanism, having a ball and an arcuate, hemispherical constriction;

[0129] Figure 70 shows a perspective cutaway view of a core base component within a waste outlet lower housing;

[0130] Figures 71a and 71b are respectively exploded and assembled perspective cross-section views of a first example of a tap valve integrated in the tap spout.

[0131] Figures 72a and 72b are respectively exploded and assembled perspective cross-section views of a second example of a tap valve integrated in the tap spout.

[0132] Figures 73a and 73b are respectively exploded and assembled perspective cross-section views of a third example of a tap valve integrated in the tap spout.

[0133] Figures 74a and 74b are transparent perspective views of arrangements for respectively allowing 360° rotation and restricted rotation of the spout.

[0134] Figure 75 is a plan view illustrating a first example of open and closed rotational positions of the spout.

[0135] Figure 76 is a plan view illustrating a second example of open and closed rotational positions of the spout.

[0136] Figure 77 is a cross-sectional view of a sink assembly allowing recirculation of liquid.

[0137] Figures 78a - 78c are views of an example of an integrated waste outlet and fluid communication channel with a side connector, as follows:

[0138] Figure 78a: cross-section with side plug and bottom cap detached,

[0139] Figure 78b: perspective cross-section with side plug detached and bottom cap attached, Figure 78c: perspective cross-section with side plug attached and bottom cap detached.

[0140] DETAILED DESCRIPTION OF THE EXAMPLES

[0141] It should be understood that the detailed description and specific examples, while indicating exemplary examples of the apparatus, systems and methods, are intended for purposes of illustration only and are not intended to limit the scope of the invention. These and other features, aspects, and advantages of the apparatus, systems and methods will become better understood from the followingdescription, appended claims, and accompanying drawings. It should be understood that the Figures are merely schematic and are not drawn to scale. It should also be understood that the same reference numerals are used throughout the Figures to indicate the same or similar parts.

[0142] Aspects include a tap assembly comprising a drain outlet for connection to a sink, a tap body with a fluid communication channel extending between an inlet and an outlet. The fluid communication channel is configured to pass through the drain outlet in use. Therefore, a simpler and easier method of installation is provided compared to the prior art where the tap assembly needs to be separately mounted, typically on a portion of worktop that is adjacent to the sink. Typically, in the known sink assembly, the mechanical and fluid connections to the tap are highly inaccessible since they are behind the sink, making installation, inspection and repair difficult, especially with the waste plumbing of the sink in the way. At least some examples provide one or more fluid inlet to the tap assembly that is accessible at the drain outlet, making installation, inspection and repair simpler than the prior art.

[0143] In examples, the tap assembly also comprises a waste grate that is designed to fit around the fluid communication channel to rigidly secure a portion of the fluid communication channel to the drain outlet. Thus, the waste grate may support the fluid communication channel by bracing it against the drain outlet.

[0144] In examples, a sink assembly is provided which includes the tap assembly and a sink.

[0145] Figure 1 shows a perspective view of a sink assembly comprising a tap assembly 100 installed in a sink 302 according to an example. The tap assembly 100 comprises a waste outlet 120 configured to be attached to the sink 302 to allow waste water to be drained from the sink 302. The waste outlet 120 forms part of a drain outlet that drains water from the sink. The tap assembly 100 also comprises a tap body (not shown in Figure 1) and a tap spout 114. The tap spout and tap body together form a tap. A fluid communication channel 110 extends between an inlet (not shown in Figure 1) and outlet 104. The fluid communication channel 110 is rigidly attached to the waste outlet 120 and passes through the waste outlet 120 in use. Accordingly, in use, the clean water delivered by the tap body 112 passes through a portion of the waste outlet 120 through which waste water flows out of the sink 302.

[0146] Figure 2 shows a perspective view of a tap assembly 100 according to an example. The tap body 112 and tap spout 114 of the tap assembly 100 are visible. The inlet 102 and outlet 104 are connected by the fluid communication channel 110. The fluid communication channel 110 passes through, and is rigidly attached, to the waste outlet 120. The waste outlet 120 is connected to waste channel 140 which carries waste water away through the plumbing system where the tap assembly 100 is installed. The waste outlet 120 and waste channel 140 together form a drain outlet.

[0147] The waste outlet 120 may be mechanically fitted to a sink 302, may be glued using an appropriate glue or sealant, or may comprise parts that cooperate to affix the waste outlet 120 to the sink 302 (for example, parts with co-operating screw threads that allow the two parts to be tightened together on opposite sides of the waste outlet of a sink 302).The waste outlet 120 may connect to waste channel 140 via conventional push fit fittings, compression fittings or by solvent welding. The waste outlet 120 may comprise a lower portion that is plastic to allow for easy connection to conventional plumbing.

[0148] The inlet 102 extends through a side wall 122 of the waste outlet 120. The inlet 102 may extend through a side wall 122 of the waste outlet 120 in the form of a short section of pipe or as a spigot, so that a water inlet pipe may be connected to supply water to the tap assembly. Alternatively, the inlet 102 may be flush with the side wall 122 of the waste outlet 120.

[0149] The inlet 102 may comprise a screw thread to allow a flexible inlet pipe (of a known type) to be connected to the inlet 102. For example, the inlet 102 may comprise a female screw thread to allow a "flexi-tail" (flexible water inlet pipe) to be connected.

[0150] The tap assembly 100 may be configured to supply both hot and cold water. In an example, the tap assembly 100 has two inlets 102, and also an internal valve assembly within the volume enclosed by the waste outlet 120, and this valve is connected to and controlled by one or more handle or lever (not shown), or by a remote electronic signal (not shown). The valve controls the flow of water through a separate hot inlet 102 and cold inlet 102 through the fluid communication channel 110, thus controlling flow and water temperature. Such valves are known in the art so are not described in detail, but will be familiar to the skilled person.

[0151] In another example that is configured to supply both hot and cold water, a single inlet 102 extends through the side wall 122 of the waste outlet 120, after which it connects to a valve (not shown) which is fed by a cold inlet pipe (not shown) and a hot inlet pipe (not shown). The valve controls the flow of water through a hot inlet pipe and a cold inlet pipe through the fluid communication channel 110, thus controlling flow and water and water temperature. The valve is connected to and controlled by one or more handle or lever (not shown), or by a remote electronic signal (not shown). Alternatively, the valve assembly may be provided outside of the waste outlet 120.

[0152] Figure 3 shows a perspective view of a portion of a tap assembly according to an example. The inlet 102 passes through a side wall 122 of the waste outlet 120. The inlet 102 is integrally formed with the waste outlet 120 thereby ensuring that the fluid communication channel 110 is rigidly supported by the waste outlet 120. For example, the waste outlet 120 may be made of metal and the inlet 102 may be cast integrally with the waste outlet 120. Alternatively, the inlet 102 may be welded, brazed, soldered, glued or otherwise mechanically fixed to the waste outlet 120. The waste outlet 120 is configured to be rigidly attached to a sink 302 thereby ensuring that the fluid communication channel 110 is rigidly fixed in position with respect to the sink 302 once installed.

[0153] The waste outlet includes a pipe section 121, which comprises the side wall through which the inlet 102 passes. The pipe section 121 is connected to a funnel section 123, with an increasing diameter. The funnel section 123 connects to a flange 125, for attaching the waste outlet 120 to a sink. The flange 125has a wider diameter than the pipe section. Providing a funnel 123 and a flange 125 in this way enables the tap assembly 100 to be attached to a wide range of different sinks, and particularly enables the assembly 100 to be retrofitted to existing sinks. Providing such features to enable straightforward retrofitting, as well as the combined tap body and waste outlet results in a fast and straightforward installation of the tap assembly within the sink.

[0154] The tap body may be configured to rotate around rotation axis A as shown by rotational direction arrows R. For example, the tap body may comprise a top portion that can rotate relative to a bottom portion.

[0155] The fluid communication channel extends the length of the tap body and tap spout. The tap body and tap spout may be provided as a single component comprising the inlet and outlet or may comprise a separate tap body and tap spout as described later. The tap body may comprise an outlet at which point it becomes or connects to the tap spout. The tap body may therefore define a first fluid communication channel, and the tap spout may define a second fluid communication channel. The first and second fluid communication channels may join to form a third fluid communication channel, as shown in Figs. 1-3.

[0156] Figure 4 shows a cross-sectional view of a portion of a tap assembly according to an example. The tap body 112 comprising a fluid communication channel 110 and an inlet 102 is pre-formed with a waste outlet 120, such that the inlet 102 passes through the side wall 122 of the waste outlet 120. Accordingly, the fluid communication channel 110 is rigidly fixed relative to the waste outlet 120. The waste outlet 120 comprises fixing means 124a in the form of holes that allow mechanical fixings to be used to secure to the underside of a sink 302.

[0157] Figure 5 shows a cross-sectional view of a portion of a tap assembly according to an example. The tap body 112 comprising a fluid communication channel 110 and an inlet 102 is pre-formed with a waste outlet 120, such that the inlet 102 passes through the side wall 122 of the waste outlet 120. Accordingly, the fluid communication channel 110 is rigidly fixed relative to the waste outlet 120. The waste outlet 120 comprises two parts, a first part that sits underneath the sink 302 and a second part that screws together from the top side of the sink 302 to rigidly fasten the waste outlet 120 to the sink 302. A fixing means 124b in the form of cooperating threads in the first and second parts allows the waste outlet 120 to be secured to the sink 302.

[0158] Figure 6 shows a cross-sectional view of a portion of a tap assembly according to an example. The waste outlet 120 is secured to the bottom of the sink 302 as per the example shown in Fig. 4, and other features are common with that example. The example further comprises a waste grate 200 that assists to support the tap body 112 relative to the waste outlet 120. The waste grate 200 is designed to slide over the tap body 112 toward the waste outlet 120. Thus, the inner diameter of the waste grate 200 is designed to be very slightly larger than the outer diameter of the fluid communication channel 110 of the tap body 112, and the outer diameter of the waste grate 200 is designed to be very slightly smaller than the innerdiameter of the waste outlet 120. Thus, when installed and positioned between the tap body 112 and the waste outlet 120, the waste grate 200 rigidly supports the fluid communication channel 110. Further an optional plug 206 may be provided, which is designed to fit around the tap body 112 to provide a good seal between the tap body 112 and the waste outlet 120. In a lowered position, where it contacts the waste outlet 120, the plug 206 provides a water-tight seal that prevents water from flowing through the waste outlet 120. In a raised position, where it does not contact the waste outlet 120 the plug 206 allows water to drain through the waste outlet 120. Thus, the plug 206 may be slid down and up the tap body 112 to respectively allow and prevent water from flowing through the waste outlet 120. The plug may be made of silicone, rubber or any other suitable material. The plug may be provided in two separable parts that can be joined around the tap body for more convenient operation. For example, the plug may comprise two silicone portions designed to fit on opposite sides of the tap body, each comprising magnetic material so that when they are brought together around the tap body 112 they firmly connect around the tap body 112 providing a secure and water-tight seal when seated above the waste outlet 120.

[0159] Figure 7 shows a cross-sectional view of a portion of a tap assembly according to an example. The example comprises all the features of the example shown in Fig. 6 but further comprises attachment means 116 that allows tap spout 114 to be releasably attached to a tap body 112. Optionally, the attachment means 116 also allows the tap spout 114 to be rotated relative to the tap body 112. The attachment means 116 may comprise a swivel joint connector or universal joint connector. The attachment means may further comprise a plurality of O-rings or seals to allow a water-tight connection, and may further comprise a horizontal channel around its outer edge to receive a locking means such as a grub screw, to prevent the tap body 112 and tap spout 114 from separating due to the force of the water pressure. The tap spout 114 may comprise a through-hole (not shown) through which the securing means may pass to engage with the channel, thereby allowing the tap spout 114 to be secured to the tap body 112 whilst allowing rotational movement.

[0160] In examples, a portion of the fluid communication channel 110 may comprise a feature to allows the waste grate 200 to be received. For example, the outside of a portion of the fluid communication channel 110 may comprise fillets or ribs that are designed to co-operate with protrusions on the waste grate 200.

[0161] Figure 8 shows an exploded view of a tap assembly according to an example. The tap spout 114 is separable from the tap body 112, using the means as discussed above in relation to Figure 7. Thus, during installation the waste outlet 120 may be secured to a sink 302, then a waste channel 140 and one or more water inlet pipe is fitted below and the tap spout 114 attached from above to complete the install. Alternatively, the waste outlet 120 may be supplied pre-fitted to a sink 302, after which a waste channel 140 and one or more water inlet pipe is fitted below and the tap spout 114 attached from above to complete the install. Accordingly, fitting the tap assembly 100 is much quicker and simpler than with existing tap assemblies and waste outlets which are separate and require separate fitting. Furthermore,since the connection for one or more water inlet pipe is provided directly at the waste outlet 120 itself, this connection is far simpler than existing methods which require reaching up behind a sink and behind the waste plumbing to reach and manipulate the water inlet connections to the tap and the mechanical connections that attach the sink to a worktop. Such existing fluid and mechanical connections are often not visible, requiring the installer or maintenance person to work by touch alone, in very awkward positions, which further complicates installation, inspection, repair maintenance and removal. According to the invention, the water inlet is more readily accessible for installation, inspection, repair, maintenance and removal.

[0162] The tap spout may be configured to rotate around rotation axis A as shown by rotational direction arrows R.

[0163] The components may be provided in kit form as shown in Fig. 8, or may be provided pre-assembled together.

[0164] Figure 9 shows a cross-sectional view of a portion of a tap assembly according to an example. Attachment means 116 allows the spout to be releasably attached to the tap body. A first attachment part 116A is integrally fitted into the bottom of the spout and a second attachment part 116B is integrally fitted into the top of the tap body. Attachments parts engage with each other to provide a secure and water-tight seal. The attachment parts 116A, B may comprise seals or O-rings and may be tapered and / or have ribs or protrusions to securely engage with each other.

[0165] Figure 10 shows a cross-sectional view of two examples (A, B) of tap assemblies that are each configured with different waste plumbing. In the first example, A, the waste channel 140 extends below the waste outlet 120 before turning 90 degrees to extend horizontally. In the second example, B, the waste channel 140 extends below the waste outlet 120 into a trap or U-bend before turning 90 degrees to extend horizontally.

[0166] Figure 11 shows a cross-section view of the two examples of sink assemblies (A, B) comprising the tap assemblies of Figure 10. The first sink assembly 300, A, comprises the same tap assembly 100 as example A of Figure. 10, but comprises a sink. The second sink assembly 300, B, comprises the same tap assembly 100 as example A of Figure. 10, but comprises a sink. Both sinks 302 are shown mounted on a stand or countertop.

[0167] Figure 12 shows a perspective view of portions of six examples (A, B, C, D, E, F) of tap assemblies that are configured with a different waste channel 140, i.e., with different waste plumbing. All examples shown in Fig. 12 have a U-bend trap. Examples B and C each comprise one or more spigot 142 for connecting a washing machine waste. Examples D and F comprise a compact trap 144, which may negate the need for a U-bend in the pipework. Examples E and F comprise dual tap assemblies and thus dual waste outlets 120, through each of which a tap body 112 extends. The features of the examples shown in Fig. 12 may be combined in any combination except where they are incompatible.Figure 13 shows a perspective view of three examples (A, B, C) of sink assemblies 300. In aspects as depicted as examples by A, b and C, a control means in the form of a handle 118 is provided in a different location. In example A, the control means in the form of a handle 118 is provided mounted on a side of the fluid communication channel 110. In example B, the control means in the form of a handle 118 is mounted on an upstand at the rear of the countertop. In example C, the control means in the form of a handle 118 is mounted on the surface of the countertop in the vicinity of the sink 302. In each case the handle allows the flow of water through the tap assembly to be controlled. Optionally, two handles or a mixer handle may be provided to control a hot and cold flow simultaneously, as described earlier.

[0168] Figure 14 shows a cross-sectional view of portions of five examples (A, B, C, D, E) of tap assemblies. In aspects such as depicted by examples A and D, the inlet 102 extends through a side wall 122 of the waste outlet 120. The inlet 102 is angled, with respect to the portion of the fluid communication channel 110 that extends through the waste outlet 120, at an angle of approximately 90 degrees. In examples, such as depicted by examples B, C, and E, the inlet 102 is flush with the side wall 122 of the waste outlet 120. In examples, such as depicted by examples D and E, a waste grate 200 may be provided. In examples, such as depicted by examples B, C and E, the inlet may be threaded and comprise threads 119 to allow a threaded water inlet pipe such as a flexi tail to be connected. In examples, such as depicted by examples C and E, the tap body 112 may comprise externally threaded portion comprising threads 119 to allow a waste grate 200 with a cooperating thread to be securely screwed into position around the tap body 112. In examples, such as depicted by examples C and E, the waste outlet 120 may comprise externally or internally threaded portion comprising threads 119 to allow a waste channel 140 with cooperating threads to be screwed to the waste outlet 120. The features of the examples shown in Fig. 14 may be combined in any combination except where they are incompatible.

[0169] Figure 15 shows a cross-sectional view of portions of a further five examples (A, B, C, D, E) of tap assemblies. The examples shown in Fig. 15 are substantially identical to the corresponding examples in Fig. 14 except that the inlet 102 is angled, with respect to the portion of the fluid communication channel 110 that extends through the waste outlet 120, at an angle of approximately 45 degrees. Within reason, any other sensible relative angle may be used, such as 40, 50, 60 or 70 degrees. The use of an angled inlet may make it easier to make the connection from a water inlet pipe to the inlet 102. The water inlet connection is typically made from underneath the tap assembly, thus angling the inlet 102 downwards may facilitate installation. The features of the examples shown in Fig. 15 may be combined in any combination except where they are incompatible.

[0170] Figure 16 shows a cross-sectional view of portions of a further five examples (A, B, C, D, E) of tap assemblies. The examples shown in Fig. 16 are substantially identical to the corresponding examples in Fig. 14 except that the waste outlet 120 comprises two threaded parts that, during installation, are introduced from opposite sides of the sink 302 and screwed together to securely clamp the waste outlet120 to the sink 302. The size of the two parts and the associated screw threads may be adapted to accommodate any thickness of sink 302. A waste grate 200 may be integrally formed into the threaded part that is introduced from the top, such that as the top and bottom portions are screwed together to secure the waste outlet 120 to the sink 302, the installation of the waste outlet 120 also provides and installs a waste grate 200 that supports the fluid communication channel 110. The features of the examples shown in Fig. 16 may be combined in any combination except where they are incompatible.

[0171] Figure 17 shows a cross-sectional view of portions of a further five examples (A, B, C, D, E) of tap assemblies. The examples shown in Fig. 17 are substantially identical to the corresponding examples in Fig. 15 except that the waste outlet 120 comprises two threaded parts that, during installation, are introduced from opposite sides of the sink 302 and screwed together to securely clamp the waste outlet 120 to the sink 302. The size of the two parts and the associated screw threads may be adapted to accommodate any thickness of sink 302. A waste grate 200 may be integrally formed into the threaded part that is introduced from the top, such that as the top and bottom portions are screwed together to secure the waste outlet 120 to the sink 302, the installation of the waste outlet 120 also provides and installs a waste grate 200 that supports the fluid communication channel 110. The features of the examples shown in Fig. 17 may be combined in any combination except where they are incompatible.

[0172] Figure 18 shows a cross-sectional view of portions of a further six examples (A, B, C, D, E, F) of tap assemblies. The examples depicted in Fig. 18 show a variety of ways in which the inlet 102 may be arrange with respect to the waste outlet 120 and waste channel 140. It should be understood that these perspective views provided relate to the same perspective as shown in Figure 8, in which the spout is orientated towards an operator to the front of a sink 302 and the waste channel 140 is orientated in the opposite direction, towards a back wall behind the sink 302. In examples such as exemplified in examples A, B, C, D and E, the inlet 102 may extend through the side wall 122 of the waste outlet 120 in any orientation. For example, as shown in examples A and B the inlet 102 may extend directly out through the side wall 122 of the waste outlet 120, i.e., at an angle of 90 degrees with respect to the portion of the fluid communication channel 110 that extends through the waste outlet 120. The inlet 102 may extend in a forward (example A) or rearward (example B) direction considering the installation of the sink, i.e., in which forward means towards the front of the sink 302 and rearward means towards the rear of the sink 302. The inlet 102 may extend sideways (i.e., towards a side of the sink 302) through the waste outlet 120 as shown in examples C and D. The inlet 102 may be angled upwards (as shown in example E) or downwards (as shown in example D) with respect to an angle perpendicular to the portion of the fluid communication channel 110 that extends through the waste outlet 120. For a particularly clean installation with a minimum of fluid connections visible underneath the sink 302, the inlet 102 may extend inside the waste channel 140 until such a position where a water inlet pipe may be connected to the inlet 102, or until such a position as it may then be provided flush with or extending through a side wall 122 ofthe waste channel 140. Accordingly, the connection to the water inlet pipe may be provided at a convenient or aesthetically pleasing (i.e., less visible) location. In examples, the tap assembly 100 may be provided with a cooperating waste channel 140 through which the inlet 102 extends internally for some or all of the length of the waste channel 140.

[0173] Figure 19 shows a cross-sectional view of a portion of a tap assembly according to an example. This is an enlarged view of example E of Fig. 17 and the features described in relation to that example therefore also apply to this Figure.

[0174] Figure 20 shows a transparent perspective view of a portion of a tap assembly according to an example for fitting to a sink. The sink is not shown. The assembly comprises the waste outlet 120 and fluid communication channel 110 as one single, integrated item. The waste outlet 120 comprises a plurality of holes around its top surface, allowing it to be secured to a sink from the underside. Spaced above this top surface is the waste grate 200, in a position where its outer edges would contact the inner periphery of a sink outlet in use. Once installed, the waste grate 200 will brace the fluid communication channel 110 against the sink, thus providing structural support for the tap body 112.

[0175] In the example shown in Figure 20, the waste outlet 120 comprises a single part that is attached to the underside of a sink. This is in contrast to the two-part waste outlet 120 with integrated waste grate 200, as shown in Figure 19, that is secured by introducing the two parts from opposite sides of the sink and screwing them together to secure the waste outlet 120 to the sink.

[0176] Figures 21 and 22 show further examples comprising the waste outlet 120 and the fluid communication channel 110 integrated into a single piece to aid and simplify installation.

[0177] Figure 21 shows a perspective cross-sectional view of a portion of a tap assembly according to an example. The waste grate 200 comprises a plurality of spokes extending from a central aperture. These spokes contact the inner surface of the waste outlet 120 when installed, thereby bracing the fluid communication channel 110 against the waste outlet 120. The description in relation to Figure 20 applies equally to Figure 21.

[0178] Figure 22 shows a perspective cross-sectional view of a portion of a tap assembly according to an example. The example comprises the features shown and described in relation to Figures 20 and 21. The example in Figure 22 thus still includes the feature of the fluid communication channel 110 and waste outlet 120 being integrated into a single piece. However, in the example shown in Figure 22, the tap assembly comprises a separate tap spout 114 (not shown) that is attachable to the tap body 112. The tap body 112 comprises attachment means 116 for enabling the tap spout 114 to be attached during installation. The attachment means 116 may comprise a connecting portion that is sized to fit snuggly inside bottom of the tap spout 114, and may comprise O-rings around the periphery to prevent water leakage. Thereby, by placing the tap spout 114 on the tap body 112 it may be secured thereto whilst allowing rotational movement of the tap spout 114 relative to the tap body 112. The tap spout 114 maycomprise a hole near the bottom, through which a fixing means such as a grub screw may pass to allow the tap spout 114 to be secured to the tap body 112 in use. As an example, the fixing means may, be configured to extend into and cooperate with a peripheral channel in the of the attachment means 116, to secure the tap spout 114 to the tap body 112.

[0179] Figure 23 shows a perspective cross-sectional view of a portion of a tap assembly according to an example. The example comprises a waste grate 200 that comprises a plurality of spokes extending from a central aperture. Figure 23 exemplifies when the tap spout 114 and waste grate 200 are attached.

[0180] Figure 24 shows a perspective cross-sectional view of a waste grate according to an example. The waste grate 200 is integrally formed into a top portion of a waste outlet 120. A screw thread cooperates with a corresponding screw thread in a bottom portion of the waste outlet 120. During installation, the two portions are introduced from opposite sides of a sink 302 and screwed together to securely attach the waste outlet 120 to the sink 302. Since in this example the waste grate 200 is integrally formed with the waste outlet 120, installation is simplified since installation of the waste outlet 120 also results in installation of the waste grate 200.

[0181] Figure 25 shows a plan view of four examples (A, B, C, D) of waste grates. The waste grate 200 may be sold separately or provided with a tap assembly 100, with different waste grates 200 being offered with different technical characteristics to suit differing technical needs, such as straining foods of different sizes. In examples, the waste grate 200 may be made from a single material or have a coating on a surface that contacts the tap assembly 100 when installed. This single material or coating may be designed to reduce friction, to allow the fluid communication channel 110 to be easily rotated with respect to the waste grate 200 with the waste grate 200 whilst still providing firm lateral and structural support for the fluid communication channel 110. For example, the coating may comprise graphene or Teflon. The coating may comprise a material that reduces friction when wet, such as plastic, thereby allowing the fluid communication channel 110 to be more easily rotated when the waste grate 200 is wet. The coating may comprise a material that expands when wet, such as cork. Therefore, the waste grate 200 may thus be configured to increase friction when wet, so that the fluid communication channel 110 may be rotated easily before use and gripped more firmly, thus supported more, when the waste grate 200 is wet.

[0182] Figure 26 shows a perspective view of six examples (A, B, C, D, E, F) of sink assemblies. As shown in the examples of Figure 26, the waste outlet 120 may be provided to a side or a rear position in the sink 302. The tap body 112 may be curved and / or may comprise bent portions, for example one or more adjacent portions angled with respect to each other, such as one portion angled at 90 degrees with respect to an adjacent portion. The tap assembly 100 may be installed in a sink 302 that is rectangular, oval or any other shape.

[0183] Figures 1 , 28 and 29 show a series of perspective views (A, B, C) of sink assemblies according to examples, each of which can be transitioned between an operative and a non-operating state. In a non-operative state, the tap assembly is substantially contained within the volume of the sink 302 and no portion extends above the top of a side wall of the sink 302. Thus, a lid 304 can be provided which covers the sink when not in use, providing an unobstructed work top when the sink assembly is in a non-operative state. Accordingly, aspects may be particularly suited to confined environments where space is a premium, such as campervans, boats or airplanes.

[0184] Figure 27 shows a series of perspective views (A, B, C) of a sink assembly according to an example. The sink assembly 300 comprises a sink 302 that comprises an internal volume V contained between the upper rim the bottom surface (alternatively expressed as the internal volume enclosed between the one or more sidewall(s) of the sink 302). The tap body 112 is flexible and comprises a plurality of watertight portions that can articulate with respect to adjacent portions. Accordingly, the tap body 112 can be formed to a variety of shapes and may even be collapsed so that is fully enclosed within the internal volume of the sink 302 (except for any portion extending below). The sink 302 further comprises a lid 304 which can be closed when the flexible tap body 112 is in a collapsed state, to finish the transition of the sink 302 to a non-operative state, so that when not in use the sink assembly 300 provides a flat surface with no protrusions. When the sink assembly is needed to be used, i.e., when it is necessary to transition the sink assembly to an operative state, the lid 304 may be opened and the tap body 112 adjusted to an upright position.

[0185] Figure 28 shows a series of perspective views (A, B, C) of a sink assembly according to an example. The sink assembly 300 comprises a sink 302 that comprises an internal volume V contained between the upper rim and the bottom surface (alternatively expressed as the internal volume enclosed between the one or more sidewall(s) of the sink 302). This example offers similar advantages and features as the example of Fig. 27 except that instead of a flexible tap body 112 the sink assembly 300 comprises a tap spout 114 that may be separated from a tap body 112. Thus, when the sink 302 is not required, i.e., to transition to a non-operative state, the tap spout 114 can be removed and stored in the sink or attached to the lid 304 as shown and the lid folded down to provide an unobstructed surface, with the tap spout 114 contained within the internal volume of the sink 302 (except for any portions extending below). When the sink assembly is required to be used, i.e., to transition the sink assembly to an operative state, the lid 304 may be lifted and the tap spout 114 re-attached to the tap body 112.

[0186] Figure 29 shows a series of perspective views (A, B, C, D) of a sink assembly according to an example. The sink assembly 300 comprises a sink 302 that comprises an internal volume V contained between the upper rim the bottom surface (alternatively expressed as the internal volume enclosed between the one or more sidewall(s) of the sink 302). This example offers similar advantages and features as the examples of Figs. 27 and 28 except that instead of a flexible tap body 112 or a detachable tap spout 114, the tap body 112 comprises a one or more articulating joints 115 allowing one or more portion of the tap body 112 to be rotated with respect to an adjacent portion. The tap spout 114 can be said to be rotatable abouta longitudinal axis of the tap body, by virtue of one of the joints 115, and about a further, perpendicular axis, by virtue of the other of the joints 115. Thus, when the sink 302 is not required, i.e., to transition to a non-operative state, the tap body 112 may be folded down within the sink to be fully enclosed within internal volume V, and the lid 304 then folded down to provide an unobstructed surface. When the sink assembly is required to be used, i.e., to transition the sink assembly to an operative state, the lid 304 may be lifted and the tap body 112 articulated to a raised position.

[0187] Figure 30 shows a cross-sectional view of part of a tap assembly, which includes a tap body 112 that is integrally formed with a waste outlet 120 of a drain outlet. The waste outlet 120 is attached to a sink 302. The tap body 112 includes a coupling 150 configured to mate with a corresponding coupling of a tap spout (not shown in Figure 30). The coupling 150 enables the tap spout to be releasably connected to the tap body 112. The coupling 150 is a quick release coupling, to enable the tap spout to be quickly uncoupled or released from the tap body 112. The coupling 150 is integrally formed with the tap body 112, which leads to a reduced number of components for connecting the tap body 112 and tap spout releasably, and which also reduces the likelihood of malfunction or leakage. A seal 151 is provided around the coupling 150 to prevent leakage between the tap body 112 and tap spout. Such a coupling may enable interchangeable tap spouts to be used with a single tap body.

[0188] Figure 31 shows a cross-sectional view of a join between a tap body 112 and a tap spout 114. A coupling mechanism 160 is provided that enables the tap spout 114 to be coupled to the tap body 112. The coupling mechanism 160 includes a first coupling part 164 that is part of the tap body 112. A second coupling part 162 sits around the first coupling part 164, and acts as an interface between the tap body 112 and the tap spout 114. The tap spout 114 slides over the top of the second coupling part 162, so that an inner wall of the tap spout 114 is sealed against the second coupling part 162. The first coupling part 164 includes three seals 163 arranged to seal against the second coupling part 162. The second coupling part 162 includes two seals 165 arranged to seal against the inner wall of the tap spout 114. The coupling mechanism 160 enables the tap spout 114 to rotate relative to the tap body 112, and to be releasably connected to the tap body 112. This may be referred to as a swivel mount or a swivel connector.

[0189] Figures 32Ato 32F show examples of tap assemblies having tap bodies 112 that are integrally formed with a waste outlet 120, and in which the shape of the waste outlet 120 varies and the portion of the waste outlet 120 through which the tap body 112 passes also varies. In Figures 32A and 32B, the tap body 112 passes through an angled or non-vertical portion of the side wall 127 of the waste outlet 120. In Figures 32C and 32D, the tap body 112 passes through a vertical portion of the side wall 129 of the waste outlet 120, and extends along the waste outlet so that a wall of the tap body is in contact with the side wall. This results in the tap body 112 being off-centre within the waste outlet 120 and as it passes through the drain hole, in the example shown in Figure 32C. In Figures 32E and 32F, the side wall of the waste outlet 120 through which the tap body passes also forms part of the tap body 112. In other words, a wallT1

[0190] of the tap body 112 is shared with part 128 of a side wall of the waste outlet 120. Such examples are useful for locations where space is limited.

[0191] Figures 33A and 33B show examples in which the tap body 112 passes through a waste outlet 120 (in Figure 33A) or a waste channel 140 (in Figure 33B) below a floor level, meaning that the tap body 112 extends a significant distance before passing through the side wall of the drain outlet. In both cases, the tap body 112 is still rigidly supported by the waste outlet 120 or waste channel 140.

[0192] Figure 34 shows a cross-sectional view of an example in an assembled state. A tap assembly 100 comprises a tap spout 114 with an outlet 104. The tap spout 114 is attached to and swivels about a tap body 112, which is attached to a core base component 130 that extends through a side wall of a waste outlet 120. In particular, the waste outlet 120 has a waste outlet upper 120a that attaches to a sink 302, a waste outlet lower housing 120b that attaches to the waste outlet upper 120a, and a waste outlet adaptor 120c that attaches to the waste outlet lower housing 120b. The core base component 130 is integrally formed with the waste outlet lower housing 120b, and a water inlet component 150 provides a supply of fresh water to the tap assembly 100. A waste grate 200 supports the tap body 112 against side walls of an opening in the sink 302, thereby providing structural support and rigidity to the tap assembly 100, which is especially important when the tap spout 114 is rotated, the waste outlet 120 comprises a waste channel 140 through which waste water can flow out of the sink 302. The tap spout 114 redirects the flow of water, through an arcuate portion that turns the water flow through approximately 180 degrees.

[0193] The tap spout 114 does not need to be arcuate but it is desirable for it to redirect the flow of water to an angle between 120 and 180 degrees.

[0194] The tap body 112 supports the tap spout 114 and has several O-rings that provide a water-tight seal between the outside surface of the upper part of the tap body 112 and the inside surface of the tap spout 114. In a variation, the tap spout 114 may be slipped inside the tap body, with the upper part of the tap body 112 being wider than the lower portion of the tap spout 114. For largely aesthetic reasons, it is generally desirable for the spout to extend all the way down to the waste grate 200, but this is not necessary.

[0195] The tap assembly 100 shown is modular which provides many benefits. Firstly, assembly of the tap assembly 100 is much simpler since all the components can be disassembled, which can assist installation particularly when space is tight. Secondly, maintenance is much simpler since individual components can be removed and replaced as required, without requiring the whole assembly to be replaced. Thirdly, a range of interchangeable components can be provided and fitted, allowing for example different waste grates 200 with different characteristics, or different tap spouts 114 to be easily fitted and interchanged, each of which can have different flows, water redirection angles, aeration properties etc. The user may wish to change the tap spout 114 purely for aesthetic reasons or to replace a damaged or tired tap spout114. Accordingly the modular system provides great flexibly and reduced cost to the user over the lifetime of the product. Fourthly, another benefit of the modular system is that bespoke kits can be created according to need, reducing the cost of the system as only necessary components need be provided in a kit. For example, a kit may be provided with a particular arrangement of waste outlet 120 or water inlet component 150, according to needs, which would not be possible if the system was not modular.

[0196] Figure 35 shows an exploded cross-sectional view of the example of Figure 34, and the function of the components is as already described. From this figure it can be seen how convenient the modular system is for installation and maintenance.

[0197] An example installation procedure will now be described. The waste outlet 120 comes in three parts, the waste outlet upper 120a, the waste outlet lower housing 120b and the waste outlet adaptor 120c. These can be disassembled ready for installation. The waste outlet upper 120a is attached to the underside of a sink. Since the other parts of the waste outlet 120 can be removed from the waste outlet 120 installation of this part is very simple. Then the waste outlet lower housing 120b can be screwed into the waste outlet upper 120a via, e.g., cooperating screw threads. Then waste outlet adaptor 120c can be screwed into the waste outlet lower housing 120b via, e.g., cooperating screw threads. Then water inlet component 150 is attached to waste outlet lower housing 120b via, e.g. cooperating screw threads. This water inlet component 150 adapts the inlet according to need, for example to allow 'flexible tails', commonly found in plumbing systems, to be attached to the input. The modular design means the water inlet component 150 can easily be switched to adapt the water inlet to be compatible with any foreseeable water supply connection. Then the tap body 112 is screwed into the core base component 130, via, e.g. cooperating screw threads. The waste grate 200 is then slipped over the top of the tap body 112 where it is held in position and rests on a lip on the tap body 112. Then the tap spout 114 is slipped over the top end of the tap body 112 and one or more O-rings seal the connection between the two, whilst allowing rotation movement of the tap spout 114 relative to the tap body 112.

[0198] The system is well suited to adapt to a sink of any thickness. Since the system is entirely modular, the user simply needs to purchase a tap body 112 that provides the necessary offset of the waste grate 200 from the core base component 130. This offset will be determined by the thickness of the sink to which the waste outlet 120 is fitted. Alternatively, a different waste outlet upper 120a or waste outlet lower housing 120b can be supplied to adapt the position of the core base component 130 relative to the sink, so that an existing tap body 112 can be used. This provides great flexibility in installation, and since the waste outlet 120 may be cheaper to make than the tap body 112, this flexibility enables the possibility to provide significant cost savings compared to rigid one piece designs.

[0199] Whilst the waste outlet 120 is shown in separate pieces, it may come as one part to reduce cost or to simplify installation.Figure 36 shows the top portion of the Figure 35 in more detail. The functioning of the parts is as already described. A plurality of O-rings on the top of the tap body 112 (shown as black dots) provide a water-tight seal when the tap spout 114 is attached to the tap body 112.

[0200] Figure 37 shows the bottom portion of Figure 35 in more detail. The functioning of the parts is as already described. One of the many benefits of the modular system is apparent from the multi-piece design of the waste outlet 120. Once the waste outlet upper 120a is fitted to the sink, in some examples, there are two or more cooperating sets of screw threads between the waste outlet 120 and the waste outlet lower housing 120b. This allows the relative rotational offset of the core base component 130 to be adjusted, simply by rotating the waste outlet lower housing 120b relative to the waste outlet upper 120a before attaching, so that different threads cooperate in installation. In examples there may be two, three, four, five, six or more cooperating screwheads, providing a commensurate number of rotational positions that the core base component 130 can be angled at relative to the sink once installed.

[0201] In an alternative variation that again demonstrates the flexibly of the modular design, the components of the waste outlet 120 are sized to fit inside one another with a seal at the junction and then clamped together, in a similar fashion to a compression fitting commonly used in plumbing. This clamping may be done by, for example a jubilee clip or rubber clamp that can be manually loosened and tightened, forming a water-tight seal. This allows the relative position of the core base component 130 to the sink to be adapted very easily, simply by loosening the clamp and rotating the waste outlet lower housing 120b relative to waste outlet upper 120a and re-tightening the clamp.

[0202] Figure 38 shows a cross-sectional view of a core base component shown from Figure 34. The core base component 130 is integrated into a waste outlet lower housing 120b which can be screwed onto a waste outlet upper 120a (not shown) via screw thread 1202. A waste outlet adaptor 120c (not shown) can be screwed onto the waste outlet lower housing al20b via screw thread 1204.

[0203] The waste outlet lower housing 120b has an opening through a sidewall 122 of the waste outlet 120, which allows this unique design to allow a supply of fresh water into the waste outlet 120 so that it can be supplied through the waste water hole in the sink.

[0204] The core base component 130 has an inlet opening 130a to which a water inlet component 150 can be attached via screw thread 1302 where it can be sealed with O-ring 1304.

[0205] The core base component 130 redirects water flowing through it by 90 degrees, through arcuate portion 1306, where it can exit via the outlet opening 130b. Screw threads 1308 allow the tap body 112 (not shown) to be screwed onto the core base component 130.

[0206] Since the core base component 130 supports the rest of the tap assembly 100, in some examples the core base component 130 is fully integrated into the waste outlet lower housing 120b so that it can be fully stress tested prior to sale.Since it supports the rest of the tap assembly 100, the core base component 130 can be subject to a large downwards force (Fi) as well as rotational forces. For this reason, it can be ideal to have a thick top wall 130t to the core base component 130 so that it can withstand such forces and rigidly support the tap body 112 and tap spout 114. In examples, the maximum thickness of the top wall 130t of the core base component 130 is between 20 and 80 percent of the diameter of the fluid communication channel 110 of the tap assembly 100, to provide rigidity to the design. Optionally, it may be between 30 and 60 percent of the diameter or optionally between 40 and 50 percent of the diameter. In very heavy-duty environments, such as professional kitchens or any professional environment, the maximum thickness of the top wall 130t may exceed 80 percent or even be or exceed 100 percent of the thickness of the diameter of the fluid communication channel. The fluid communication channel should be generally of uniform diameterthroughout the tap assembly 100, except perhaps at the end of the tap spout 114 where there may be a restrictor or aerator fitted. Thus the diameter of the fluid communication channel should be understood to be the average diameter along its length, ignoring any attachments to the spout or any other deliberate restrictions within the spout (as may be provided, for example, in a water saving spout with narrower diameter to deliberately reduce the flow).

[0207] Figures 39 and 40 show a cross-sectional view of the bottom portion of an example showing how a drain plug can be used to seal the waste outlet. Figure 39 shows the drain plug in a raised (open) position and Figure 40 shows the drain plug in a lowered (closed) position. Components that have already been introduced will not be repeated. The tap assembly 100 comprises a drain plug 220 that can seal the waste outlet 120. Rotation of the waste grate 200 operates the drain plug 220.

[0208] With reference to Figure 39, a spring 112a-12 on tap body 112 holds the drain plug 220 in the raised position.

[0209] With reference to Figure 40, when the waste grate 200 is rotated, the drain plug 220 is forced downwards, against the force of the spring 112a-12, where it can seal against the side walls of the waste outlet 120.

[0210] Figure 41 shows a perspective part-sectional view of the example shown in from Figure 39, showing the operation of the drain plug in more detail. The spring 112a-12 rests on lip 112a-10, such that the spring urges the drain plug 220 upwards in normal use. The waste grate 200 has a tapered section 210v that extends downwards and that moves against a similarly tapered section 220v on the drain plug 220. Rotating the waste grate 200 thereby causes the two tapered sections to interact and forces the drain plug 220 downwards. A groove (not shown) in the drain plug 220 causes it to move vertically along a groove 112a-14 so that it does not simply rotate when the waste grate 200 is rotated, thereby forcing it downwards against the spring.

[0211] Figures 42a and 42b show a perspective view of the example shown from Figure 39. Figure 42a shows the drain plug 220 in a raised position and Figure 42b shows the drain plug 220 in the lowered position.The waste grate 200, in use, sits parallel with the top of the opening in the sink (not shown) through which the sink waste water can be drained. Accordingly, the waste grate 200 is offset from the top surface of the waste outlet 120 in these figures.

[0212] Figures 43a and 43b show a perspective sectional view of the example shown from Figure 39. The function is as described previously. Figure 43a shows the drain plug 220 in a raised position and Figure 43b shows the drain plug 220 in a lowered position where it seals against the side walls of the waste outlet 120.

[0213] Figure 44 shows a tap body according to an example. Optionally, the tap body 112 has two parts tap body lower 112a and tap body upper 112b that can be attached together, for example by screw thread as shown with O-ring 112b-06 providing a water-tight seal. Threads 112b-04 allow the two parts to be attached together. Threads 112a-04 at the base of the tap body lower 112a allow the tap body 112 to be screwed into a core base component 130 (not shown) with O-ring 112a-06 providing a water-tight seal. Tap body upper 112b has one or more O-rings 112b-04 that allow a water-tight connection with a spout that is attached to it. Lip 112a-08 provides a lip to support the waste grate 200 in use, holding it in the correct position and preventing it from sliding down the tap body 112.

[0214] Figure 45 shows a perspective view of a single-piece waste grate and the lower portion of a tap assembly according to an example. The lip described in relation to Figure 44 supports the waste grate 200 in its elevated position and allows rotational but not downwards movement. The O-rings on the tap body 112 can be clearly seen.

[0215] Figures 46a and 46b show perspective views of the waste grate shown in Figure 45, and a variant including a drain plug actuator, respectively. In some installations, it may not be necessary to provide a drain plug drain plug 220. Figure 46a shows a design without the drain plug actuator, and Figure 46b shows a design with a drain plug actuator 210 integrated into the waste grate 200.

[0216] Figure 47 shows a perspective view of a two-piece waste grate and the lower portion of a tap assembly according to an example. In this example, the two pieces of the waste grate 200 are sit on top of one another, so that one can be rotated relative to the other to adapt the size of the openings in the waste grate 200. Accordingly, the waste grate 200 can be adapted to filter out foodstuffs and articles of different sizes by adjusting the relative rotation of the two parts.

[0217] For example, if the top part is rotated so that each spoke sits between two adjacent spokes of the lower part, the straining size of the waste grate is approximately halved, so that it can sieve or retain finer particles than if the top part and second part are aligned (i.e. arranged so that the spokes align).

[0218] The waste grate 200 may have more than two pieces. For example, a third or fourth piece may be added, on top of the top piece, with a similar spoke design to the first two pieces, to allow even more fine-grained straining control, if required.Figures 48a and 48b show perspective views of the waste grate shown in Figure 47, and a variant including a drain plug actuator, respectively. In some installations, it may not be necessary to provide a drain plug 220. Figure 48a shows a design without the drain plug actuator, and Figure 48b shows a design with a drain plug actuator 210 integrated into the waste grate 200.

[0219] Figure 49 shows a perspective view of the two-piece waste grate shown in Figure 47, in a rotated position. As can be seen, the rotation of one of the parts causes the openings to be smaller, thereby allowing smaller foodstuffs to be caught by the waste grate 200.

[0220] Figures 50a and 50b show perspective views of the waste grate shown in Figure 49, and a variant including a drain plug actuator, respectively. In some installations, it may not be necessary to provide a drain plug 220. Figure 50a shows a design without the drain plug actuator, and Figure 50b shows a design with a drain plug actuator 210 integrated into the waste grate 200.

[0221] Figure 51 shows a perspective sectional viewof a tap body and a two-piece waste grate of an example in an exploded state, showing how the parts interact. Parts such as the tap spout 114 are not shown.

[0222] Where the tap body lower 112a meets the tap body upper 112b a lip 112-08 provides support for the waste grate 200. An optional annular rim on the underside of the top part of the waste grate 200 fits in a groove in the bottom part of the waste grate 200 which ensures the two fit together snugly. By adapting the relative size of the rim and the groove, the rotational resistance (friction) between the two parts can be adapted.

[0223] Figures 52a to 52c show cross sectional views of a tap body 112 according to an example comprising an automatic shut off feature when the tap spout is removed from the tap body.

[0224] With reference to Figure 52a, the tap body upper 112b has been removed from the top of the tap body lower 112a and the water supply has been turned off. A ball 112a-20 floats near the top of the tap body lower 112a (water level not shown).

[0225] With referenced to Figure 52b, the tap body upper 112b is then screwed onto the tap body lower 112a. Due to a constriction 112b-08 in the base of the tap body upper 112b, once the water pressure increases (i.e. the water supply is turned on), the ball prevents the water from entering the tap body upper 112b. Accordingly, even though the tap body 112 has a pressurized supply of fresh water supplied to it, no water flows into or out of the tap body upper 112b. The tap spout 114 is shown ready to be connected to the tap body 112 in the insertion movement direction Mins.

[0226] With reference to Figure 52c, a tap spout 114 is then connected to the tap body upper 112b. The tap spout 114 comprises a displacement mechanism with an angled end 1148 that displaces the ball 112a-20 and allows the water to flow through the spout. When the tap spout 114 is removed, the angled end is withdrawn, causing the water pressure to force the ball against the restriction in the tap body upper 112b. Accordingly, the restriction, ball and displacement mechanism provide an automatic water shut off feature whenever the spout is removed from the tap body 112.Described another way, displacement mechanism comprises an angled arm 1148 configured to displace the ball or sphere out of the constriction and against a side of the tap body 112 when the spout 114 is attached to the tap body 112.

[0227] The design of the angled arm 1148, such as with a taper at its distal end, may reliably push the ball both downward and sideways, thereby ensuring a suitably clear flow path for liquid when the spout 114 is attached.

[0228] Optionally, the entire tap body 112 may be made of one piece of material with blind holes drilled into each end. By drilling the hole at one end slightly smaller than the other the constriction 112b-08 can be easily formed. The ball 112a-20 can be sized to be larger than the smaller hole and smaller than the larger blind hole.

[0229] Since the mechanism is very simple and has no moving parts, it may be ideally manufactured from a single piece of material to reduce cost and complexity, and to simplify production. In such a single piece design, the ball can be introduced into the underside of the tap body 112 when it is attached to the core base component 130.

[0230] Figure 53 shows a sectional view of the spout shown in Figure 52c, showing the parts in more detail. The tap spout 114 comprises a mechanism 1142 comprising a side support 1144, a central portion 1146 and a displacement mechanism comprising an angled end 1148. The side support holds the central portion 1146 in the centre of the tap spout 114 so that it may pass through the centre of the tap body upper 112b when the tap spout 114 is slid over the tap body upper 112b.

[0231] The ball functions as a flow stopping device and the displacement mechanism functions as a flow enabling device by displacing the flow stopping device.

[0232] Figure 54 shows a cross sectional view of an example of a core base component integrated into a waste outlet lower housing. Again, the core base component 130 is integrated into the waste outlet lower housing 120b. Features that have already been described in relation to other examples of core base component 130 function in the same way.

[0233] The core base component 130 has a thick top wall 130t and also a thick bottom wall, that collectively provide a very rigid support for the core base component 130 within the waste outlet lower housing 120b. The total thickness of the top wall and bottom wall exceeds the diameter of the fluid communication channel 110 of the core base component 130, thus providing a very solid base to support the rest of the tap assembly 100. The bottom edge of the core base component 130 is tapered towards a lower rim of the waste outlet lower housing 120b to improve waste water run-off.

[0234] Figure 55 shows an axonometric view of another example of a core base component integrated into waste outlet lower housing, the core base component having an angled water inlet. Again, a thick top wall 130t and thick bottom wall provides enables a rigid connection between the core base component 130 and the waste outlet lower housing 120b. The lower wall is sloped downwards, and the top wall 130t hasa pitched roof with angled sides. Both of these features aid dirty water run-off. This example allows the water inlet connection to be supplied at an angle, which is useful since the water supply most typically comes from the floor region. This design thus allows pressure on inlet pipes to be reduced by providing a more gentle angle than an inlet that is at 90 degrees to the vertical.

[0235] The component provides a fluid communication channel from its inlet opening 130a to its outlet opening 130b. The shape of component around the fluid communication channel may beteardrop or pear shaped. Such a shape provides good structural support since there is additional structural material at the top 130t of the fluid communication channel relative to the sides and bottom, providing improved overall rigidity (compared to designs with uniform material thickness in all directions), as well as good resistance to vertical axial loading, as well as good resistance to rotational forces along the axis of the fluid communication channel (which may appear e.g. when the tap spout is rotated relative to the body).

[0236] The core base component 130, with the features noted above, works in harmony with the bracing action of the waste grate 200 against the side walls of the tap body 112 to provide a robust and rigid support structure for the tap assembly 100.

[0237] As will be noted, in some examples, the lower wall of the core base component 130 sloped downwards towards a bottom rim of the waste outlet 120 (specifically the waste outlet lower housing 120b where present), whereas in other examples it may extend horizontally towards the side wall of the waste outlet 120. Either option may be employed in any example.

[0238] Figures 56 to 58 show examples of tap assembly having different water inlet configurations. With reference to Figure 56, the tap assembly 100 has a water inlet component 150 with an inlet end 150a. The inlet end 150a of the water inlet component 150a is coupled to an extension piece of similar diameter, which extends through a wall or carcass side. This allows the water inlet connections to be extended beyond the wall or carcass side, where they may more easily be made.

[0239] With reference to Figure 57, the tap assembly 100 has a water inlet component 150 with an inlet end 150a. The water inlet component 150 is sized to fit snugly inside the water supply pipe. Different water inlet components 150 with differently sized inlet ends 150a can be supplied, allowing the product to be fitted to plumbing pipework anywhere in the world. The water inlet end 150a may be plastic welded to the incoming supply pipe for a secure fitting.

[0240] With reference to Figure 58, the tap assembly 100 has a water inlet component 150 with an inlet end 150a. The inlet end 150a is adapted to receive a flexi tail commonly found in certain plumbing systems around the world. The inlet end water inlet component 150a comprises a screw thread 1502 and one or more O-rings or seals 1504 to provide a secure and water-tight fitting to such tails.

[0241] With reference to Figure 59, the tap assembly 100 has a water inlet component 150 with an inlet end 150a. The inlet end water inlet component 150 is sized to fit snugly inside the water supply pipe. Different water inlet components 150 with differently sized inlet ends 150a can be supplied, allowing the productto be fitted to plumbing pipework anywhere in the world. The water inlet end 150a may be plastic welded to the incoming supply pipe for a secure fitting.

[0242] Figures 59 to 61 show a perspective exploded view of an example of tap assembly, where Figure 60 shows a top portion of the example shown in Figure 59 in more detail, and where Figure 61 shows a bottom portion of the example show in Figure 59 in more detail. These exploded views are provided to aid understanding of the various components, which function as already described in the preceding description.

[0243] Figure 62 shows a cross-sectional view of an example of tap assembly. The tap assembly 100 has a core base component 130 that is rigidly supported by and extends through a side wall of a waste outlet 120. The tap body 112 is attached to the core base component 130 and supports the tap spout 114. The upper portion of the tap body 112 comprises a plurality of O-rings which provide a water-tight seal between the tap body 112 and the tap spout 114.

[0244] This example is similar to some other examples except that there is no waste grate. That is, the tap extends through the hole in the sink 302 and is rigidly supported by the core base component 130 that extends through the side wall of the waste outlet 120.

[0245] Figure 63 shows a cross-sectional view of an example of tap assembly. The tap assembly 100 has a core base component 130 that is rigidly supported by and extends through a side wall of a waste outlet 120. The tap body 112 and tap spout 114 form an integrated unit that is rigidly attached to the core base component 130. An adaptor 136 secures the integrated body and spout to the core base component 130. The adaptor 136 is screwed into the core base component 130, via cooperating screw thread, until it is secure, and then the integrated tap and spout is screwed into the adaptor 136 again via cooperating screw threads. Once secure, the tap spout 114 is rigidly fixed in position, i.e. does not rotate. O-rings seal the connection between the adaptor 136 and the core base component 130, and between the adaptor 136 and the tap body and spout.

[0246] The adaptor has a through hole which allows water to flow through the adaptor. Optionally, the adaptor has a hexagonal or square through hole that serves as both a fluid conduit and a recess into which a suitable hex-key or Robertson drive bit (respectively) can be attached to rotate the adaptor 136 relative to the core base component 130 to secure it thereto. The spout can be attached to the adaptor 136 by rotating it by hand.

[0247] Optionally, the integrated body spout may have two parallel edges for receiving a tool, such as a spanner or adjustable wrench, thereby allowing the spout to be more securely tightened against the adaptor 136, if necessary. The parallel edges are optionally located within the bottom third of the integrated body and spout such that they are less visible in use and such that the tightening action is less likely to damage the spout by positing the parallel edges as close as possible to the core base component 130 (when accounting for the position of the sink).The parallel edges may be positioned below the surface line of the sink, when the spout is in the nearly fully installed position, in which position they may be tightened by an offset spanner.

[0248] Figure 64 shows a close-up sectional view of a portion of the tap assembly shown in figure 63. From Figure 64, the function of the cooperating screw threads and O-rings as just described may even more readily understood.

[0249] The example may provide for either a fixed or rotatable spout. The normal rotational range of a rotatable spout is within perhaps a 90 degree arc back and forth. Therefore, optionally the integrated tap spout and body may be screwed into the adaptor 136, and screwed on sufficiently to ensure a water-tight seal, but not tightened fully. This then permits the spout to rotate freely about the adaptor 136. If, alternatively a non-rotatable spout is desired the combined spout and body can be tightly attached (screwed into) the core base component so that it is not generally free to rotate (other than with a large force as may be provided e.g. when disassembling for maintenance)

[0250] Figure 65 shows a sectional view of a bottom portion of a tap assembly according to an example, showing a side skirt on the drain plug, with the drain plug in a raised position. A skirt 222 extends down the side of the drain plug 220, serving to cover and protect the spring 112a-12. This prevents water and waste products from contacting the spring 112a-12 and potentially jamming or otherwise impacting its operation. The skirt 222 may extend down the entire height of the spring 112a-12 when the spring is fully uncompressed, as shown in Figure 65.

[0251] In the raised position, waste water may pass around the sides of the drain plug 220, and down through the waste outlet 120.

[0252] Figure 66 shows the example of Figure 65 with the drain plug in a lowered position. Since the spring 112a-12 is now compressed relative to its full height, the skirt (which has not changed in height) may extend substantially further down the tap body 112 than the bottom of the spring. In common with all examples with the feature, the drain plug 220 and skirt 222 may be made of rubber or any suitable flexible material. In the lowered position, the drain plug 220 seals against the side walls of the waste outlet 120 preventing food and or waste water from flowing through the waste outlet 120.

[0253] Figures 67a-e show cross sectional views of a tap body according to an example comprising an automatic shut off feature when the tap spout is removed from the tap body. With reference to Figure 67a, the tap body upper 112b has been removed from the top of the tap body lower 112a and the water supply has been turned off (water level not shown). A one way valve 112b-20 is fitted inside the tap body 112, optionally in the tap body upper 112b. The valve as shown can pivot downwards towards the base of the tap body 112.

[0254] With referenced to Figure 67b, the tap body upper 112b is securely attached to the tap body lower 112a and the water supply is again turned on so that the water pressure in the tap body lower 112a increases.In one example form of one-way valve 112b-20, as shown, a flap may extend across an opening in the tap body upper 112b. The water pressure holds the valve in the closed position and prevents any water from flowing past the valve 112b-20 and up the tap body 112. Accordingly, even though the tap body 112 has a pressurized supply of fresh water supplied to it, no water flows into or out of the tap body upper 112b.

[0255] The tap spout 114 is shown ready to be attached to the tap body 112 in the insertion movement direction M|Ns.The tap spout 114 comprises a mechanism 1142 comprising a side support 1144, a central portion 1146 and a displacement mechanism comprising an angled end 1148. The side support holds the central portion 1146 in the centre of the tap spout 114 so that it may pass through the centre of the tap body upper 112b when the tap spout 114 is slid over the tap body upper 112b.

[0256] With reference to Figure 67c, a tap spout 114 is now connected to the tap body upper 112b. The tap spout 114 comprises a release mechanism in the form of an angled end 1148 that displaces one way valve 112b-20 as the tap spout 114 is slid downwards into position on the tap body 112. This causes the one way valve 112b-20 to pivot open and allows water to flow past the valve and up the tap body 112 into the tap spout 114. As shown in Figure 67c, the valve may be held firmly against the side wall of the tap body 112 such there is negligible flow restriction upon the water flowing through the tap body 112.

[0257] Figures 67d and 67 e show the close-up view of the stages shown in Figures 67b and 67e respectively. That is, Figure 67d shows the spout removed and the valve in the closed position thereby stopping water flow, and Figure 67e shows the spout attached and displacing the valve so that water can flow.

[0258] As shown in Figures 67d and 67e, the valve 112b-20 pivots about a pivot 112b-22. Optionally, the mechanism may comprise a spring to hold the valve in the closed position until such a time as it is displaced by the displacement mechanism comprising an angled end 1148.

[0259] The tap body 112 has an opening 112b-08 that is sealed by the valve 112b-20. The opening may comprise a constriction but alternatively a protrusion on the side opposite to the pivot can be provided to retain the valve in the closed position.

[0260] The valve functions as a flow stopping device and the displacement mechanism functions as a flow enabling device by displacing the flow stopping device.

[0261] The main body of the tap body 112 may be created as a single component or as two components that are attached together.

[0262] Figure 68 shows a close-up cross sectional view of a portion of a tap body with one example of a water shut off mechanism, having a ball and V-shaped constriction. This design with a V-shaped constriction 112b-08 has been designed to be easy to manufacture, even when the tap body 112 is made from a single piece of material that is drilled from both ends with differently sized holes, since the drill bit will naturally have a pointed end that will form the V-shaped constriction 112b-08. this shape ofconstriction is also very simple and reliable, and the ball 112a-20 will naturally self-centre in the constriction when water pressure is applied from below.

[0263] Figure 69 shows a close-up cross sectional view of a portion of a tap body with another example of a water shut off mechanism, having a ball and an arcuate, hemispherical constriction. Having an arcuate constriction, that may optionally be hemispherical, may result in better sealing of the tap body 112 since the contact surface area between the ball 112a-20 and the constriction 112b-08 may be increased. The constriction may optionally have flared or rounded outer edges to allow the ball to more easily located into the constriction. The constriction may form a truncated hemisphere, to achieve an optimal balance between maximal sealing of the opening (when closed) and minimal flow restriction (when opened).

[0264] Figure 70 shows a perspective cutaway view of a core base component 130 within a waste outlet lower housing 120b. In this example, the core base component 130 has a teardrop or pear shape, when viewed along the axis of the fluid communication channel. The top wall 130t of the core base component 130 is thicker than the other walls, providing significant rigidity to the core base component 130. Since many of the loads transferred from the tap spout 114 to the core base component 130 are transferred to the top wall of the core base component 130, strengthening the top wall provides a significant improvement in rigidity relative to strengthening the other walls or having all walls of uniform thickness. It can also be beneficial to strengthen the bottom wall relative to the sidewalls, since the top and bottom of the core base component 130 are subject to the highest loads.

[0265] The flow of fluid through the tap spout 114 may be controlled by rotating the tap spout 114 about a substantially vertical axis, for example coaxial with the waste grate 200. Preferably, this feature is enabled by a tap valve 400 that is integrated within the tap spout 114. This feature may be applied to any of the examples described herein. Advantageously, this may remove the need for a separate valve handle, lever or electronic sensor, thus allowing for a more compact arrangement that may be easier to install.

[0266] Figures 71a and 71b illustrate one example of a tap valve 400 comprising a rotary valve such as a scissor or disc valve, that may be housed or integrated within the spout 114, for example by means of valve extension 401, an upper section of which is secured within a lower section of the tap spout 114, for example by means of a screw thread, bayonet fitting, interference fit or adhesive. An axial channel is provided through the valve extension 401 to allow liquid to flow therethrough.

[0267] A lower section of the valve extension 401 extends into a valve bottom cartridge 402 that is removably connected or connectable to core base component 602, for example by means of a screw threaded inner wall 420. The valve extension 401 is rotationally fixed with respect to the tap spout 114 such that, as the tap spout 114 is rotated about a vertical axis, the valve extension 401 rotates about the vertical axis within the valve bottom cartridge 402. The valve extension 401 is removably secured within the valve bottom cartridge 402 in an axial (e.g. vertical) direction by a mounting screw 404 that passes through a screw threaded aperture in the side wall of the valve bottom cartridge 402 and is slideablyengaged a circumferential groove 405 in the surface of the valve extension 401, so that the valve extension 401 is able to rotate about the vertical axis relative to the valve bottom cartridge 402. The valve extension 401 can be removed in a vertical direction from the valve bottom cartridge by retracting the mounting screw 404.

[0268] The outer side surface of the valve extension 401 is slideably sealed against the inner surface of the valve bottom cartridge 402 by one or more seals, such as O-rings located within axially spaced circumferential grooves 406a, 406b in the outer side surface of the valve extension 401, so as to prevent liquid from leaking around the outer side surface of the valve extension 401.

[0269] The flow of liquid through the tap valve 400 is controlled by a scissor valve comprising upper and lower valve discs 403a, 403b, made for example of ceramic. The upper valve disc 403a is secured or integrated within the lower end of the valve extension 401, while the lower valve disc 403b is secured or integrated within the valve bottom cartridge 402 such that, when the valve extension 401 is mounted within the valve bottom cartridge 402, the lower surface of the upper valve disc 403a slidably abuts the upper surface of the lower valve disc 403b.

[0270] The valve discs 403a, 403b have respective apertures, for example in the form of radial segments, that are selectively aligned or misaligned by relative rotation of the valve discs 403a, 403b, so as to open or close the valve as the tap spout 114 is rotated about the vertical axis. The degree of alignment of the apertures may control the degree of opening of the valve and hence the rate of flow through the valve.

[0271] Figures 72a and 72b illustrate an alternative example of a tap valve 400 comprising an axially moveable valve such as a poppet valve, that may be housed or integrated within the spout 114. Similar parts to the example of Figures 71a and 71b carry the same reference numerals in this example, and will not be described again in detail.

[0272] The poppet valve comprises an axially moveable valve body 410 having a sealing washer 411 secured to its upper surface, for example by a screw 412. A valve body pin 413 is attached to and projects laterally from the valve body 410, for example passing through a diametric recess within the valve body 410. The lower end of the valve extension 401 includes a helical slot 414 in which the valve body pin 413 is slidably engaged. The lower portion of the valve body 410 includes one or more downwardly projecting legs 415 that are slidable in a vertical direction within corresponding slots 416 in the valve bottom cartridge 402, so as to prevent rotation of the valve body 410. Thus, as the tap spout 114 and valve extension 401 are rotated about the vertical axis relative to the valve bottom cartridge, the valve body pin 413 slides along the helical slot 414 so as to move the valve body 410 in the vertical direction.

[0273] At a vertically uppermost position of the valve body 410, the sealing washer 411 seals against the bottom of the inner channel 409 of the valve extension 401, thus closing the valve 400. At a vertically lower position of the valve body 410, liquid may flow around the valve body 410 and into the inner channel

[0274]

[0275] extension 401, thus opening the valve 400.

[0276] Figures 73a and 73b illustrate another alternative example of a tap valve 400, comprising an axially moveable actuator valve. This example is similar to that of Figures 72a and 72b, except that the valve body 410 is moved in the axial direction by an actuator 440, such as an electromechanical actuator.

[0277] A spring 441, such as a compression spring, may be located between the lower end of the valve extension 401 and the upper end of the valve body 410, so as to bias the valve body 410 away from the lower end of the valve extension 401 such that the valve 400 is normally open. The actuator 440, when activated, moves the valve body 410 towards the lower end of the valve extension 401 against the bias of the spring 441 so as to close the valve 400.

[0278] The actuator may be electrically powered, for example by means of an electrical cable that passes through an aperture 445 in the valve bottom cartridge 402.

[0279] The actuator 440 may be controlled by the rotation of the tap spout 114 about the vertical axis. For example, a magnetic portion 442 may be located with a recess in the lower end of the valve extension 401 so as to act as a magnetic switch that selectively activates and deactivates the actuator 440. Alternatively or additionally, the actuator 440 may be activated and deactivated respectively by connection and disconnection of electrical power, controlled for example by a remote switch.

[0280] In any of the above examples, the degree of rotation of the spout 114 about the vertical axis may be limited or full 360° rotation may be enabled. This may be achieved for example by the circumferential extent of the groove 405 within which the mounting screw 404 may slide. In the example shown in Figure 74a, the groove 405 extends circumferentially completely around the outer surface of the valve extension 401 so that full 360°rotation is enabled between the valve extension and the valve bottom cartridge 402. In the example shown in Figure 74b, the groove 405 extends circumferentially only partially around the outer surface of the valve extension 401 so that rotation between the valve extension and the valve bottom cartridge 402 is limited.

[0281] The valve 400 may be arranged so as to be open in a central position and closed as the spout 114 is rotated about a vertical axis by a predetermined distance to either side of the central position, as shown for example in plan view in Figure 75. Alternatively, the valve 400 may be arranged to be closed in the central position and open as the spout 114 is rotated to either side of the central position. These arrangements are particularly suitable for rotary valves such as the scissor valve as described above, where the valve 400 alternately opens and closes as it rotates.

[0282] Alternatively, the valve may be arranged so as to be closed when the spout 114 is rotated to one side about a vertical axis and open when the spout is rotated to the other side, as shown in Figure 76. This arrangement is suitable for both the rotary and axial valves 400 as described above.In some applications such as a fountain, it may be desirable to recirculate liquid flowing through the waste outlet 120 back to the inlet 102, for example using a pump.

[0283] Figure 77 is a cross-section of an example installation in which liquid flowing through the spout 114 into the sink 302 passes into a funnel-shaped drain including a tank 600 arranged below the waste grate or filter 200. The lower end of the tank 600 is connected via a funnel drain 601 to a core base component 602 having connections for a pump (not shown), which recirculates the liquid into the spout 114. Examples of the core base component 602 are described in more detail below.

[0284] In the example shown in Figures 78a-c, the core base component 602 has an integrated inlet 102 and waste outlet 120, of the type described above with reference for example to Figures 37 and 38, and includes a side connection 500 which may be closed by a removable cap or plug 501, for example by means of a screw thread, bayonet or other removable attachment means. The lower end of the waste outlet 120 may be closed by a removable bottom cap 502, for example by means of a screw thread, bayonet or other removable attachment. The arrangement allows a drain pipe to be attached to either the lower end or the side connection of the waste outlet 120, with the other one of these being closed by the respective cap or plug 501, 502. The option to connect the drain pipe to the side connection 500 gives greater flexibility in the installation and may allow space or height restrictions to be overcome. Alternatively, a waste outlet adapter 120c may be connected to the lower end of the waste outlet 120, for example using a similar connection to that of the bottom cap 502, and the side connection 500 may then be closed.

[0285] A mixer component and / or a fluid control mechanism may be integrated into any of the example of the various tap assemblies 100 described. Typically, for convenience these may be supplied attached to the incoming water supply, i.e. prior to the water inlet component 150 to maintain and clean and neat install and provide flexibility as to the location of the control and / or mixing components. The skilled person will appreciate how such components work and how the plumbing connections may be adapted to accommodate varying locations for control and / or mixing components, so these are not described in any detail.

[0286] In known taps, the spout is known to leak and also the spout needs to be secured to the tap body to prevent it from coming loose. Many taps on the market have a single O-ring, which is often in a difficult to access making it difficult to inspect and replace, and such designs are prone to leaking. In various examples herein, the connection between the tap body 112 and the tap spout 114 comprises several O-rings - for example, 2, 3, 4, 5 or 6 or more co-axial O-rings. In examples these are positioned on the outside of the tap body 112, so that they can be easily inspected and replaced if required, simply by pulling up on the spout. No specialist tools or tools at all are required to remove or to fit the spout. Providing a large number of O-rings has been found to not only provide a more water-tight connection between the tapbody 112 and the tap spout 114, but also sufficient friction that the tap spout 114 remains firmly attached to the tap base 112 with no special tooling or securing means required.

[0287] In some examples, the core base component 130 is integrally formed with the waste outlet lower housing 120b. This results in enhanced rigidity and reduces the possibility of leaks, and makes mounting points less vulnerable to tolerances. Since the waste outlet lower housing 120b has a side wall that is typically curved, having the two as integrally formed may simplify manufacture since it negates the need to attach the core base component 130 to a curved surface.

[0288] The waste outlet upper 120a and waste outlet adaptor 120c may be made of any suitable material, such as plastic or metal.

[0289] The waste outlet lower housing 120b and core base component 130, whether integrally formed or whether two separate components, may be made of any suitable material such as metal or plastic. The core base component 130 (and outlet lower housing 120b when they are integrally formed) may be milled, optionally by a CNC machine, or may be cast. Where the component is cast, it may be subject to an additional machining process e.g. to produce screw threads and recesses for washers or O-rings.

[0290] In some examples, the core base component 130 is a detachable from (and attachable to) the waste outlet 120. This allows the parts to be disassembled for, e.g. inspection, maintenance, repair and replacement. It also allows the core base component to be fitted after the waste outlet 120 is in place, which may comprise retrofitting the core base component 130 into an existing waste outlet.

[0291] Such a process of fitting the core base component to the waste outlet 120 may comprise the following steps: providing a core base component with a connector for attaching to the waste outlet 120; drilling a hole in the waste outlet 120; positioning the core base component 130 so that at least a portion passes through the hole; and securing the core base component 130 to the waste outlet 120. For example, the core base component 130 may comprise an externally threaded pipe at its inlet end (i.e. the end that is attached to the waste outlet 120). A hole is then drilled through the waste outlet, which hole is larger than the external diameter of the threaded pipe) and the threaded pipe is inserted through the hole. A nut is then tightened onto the threaded pipe from outside the waste outlet to secure the core base component 130 into the waste outlet 120. Optionally the connection between the core base component 130 and the inside and / or outside surface of the waste pipe may be sealed with one or more washers, which may have a curved end profile to accommodate the curvature of the waste outlet (if it is curved).

[0292] Variations to the disclosed examples can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality.The examples are purely illustrative and not exhaustive thus it will be appreciated by the skilled person that the features of any example may be combined with the features of any other example except where they are clearly not compatible.

[0293] The mere fact that certain measures are recited in mutually different dependent claims does not indicate that these measures cannot be advantageously combined.

[0294] If the term "adapted to" is used in the claims or description, it is noted the term "adapted to" is intended to be equivalent to the term "configured to". If the term "arrangement" is used in the claims or description, it is noted the term "arrangement" is intended to be equivalent to the term "system", and vice versa.

[0295] Any reference signs in the claims should not be construed as limiting the scope.

[0296] ALTERNATIVE ASPECTS

[0297] Alternative aspects, which may form the basis of alternative or additional claims, are recited below as numbered clauses. Any of the example clauses in this section may be used with any other of the example clauses and / or any of the other examples or examples described herein.

[0298] Clause 1: a tap assembly comprising: a tap body comprising a fluid communication channel extending between an inlet and an outlet; and a waste outlet for attachment to a sink to allow waste water to drain from the sink; and wherein the fluid communication channel is adapted to extend through the waste outlet in use.

[0299] Clause 2: a tap assembly according to clause 1 wherein, the fluid communication channel is adapted to be supported by the waste outlet in an assembled configuration.

[0300] Clause 3: a tap assembly according to clause 1 or clause 2 adapted to limit a relative motion between the waste outlet and the fluid communication channel in the assembled configuration.

[0301] Clause 4: a tap assembly according to any of clauses 1 to 3, wherein the tap body is adapted so that the inlet and outlet extend from opposite sides of the waste outlet.

[0302] Clause 5: a tap assembly according to any of clauses 1 to 4, wherein the waste outlet comprises a waste channel, and wherein the inlet extends through the waste channel.

[0303] Clause 6: a tap assembly according to clause 5, wherein the inlet extends axially through a side wall of the waste channel.

[0304] Clause 7: a tap assembly according to clause 6, wherein the waste channel is adapted to receive a water inlet pipe for providing water to the inlet.

[0305] Clause 8: a tap assembly according to any of clauses 1 to 7, wherein the tap assembly comprises a tap spout, optionally wherein the tap spout is adapted to be releasably attachable to the tap body.

[0306] Clause 9: a tap assembly according to clause 8, wherein the tap spout is adapted to rotate relative to the tap body around a longitudinal axis.Clause 10: a tap assembly according to any of clauses 1 to 9, comprising a waste grate that is adapted to secure the tap body to the waste outlet in the assembled configuration.

[0307] Clause 11: a tap assembly according to any of clause 10, wherein the waste grate is adapted to engage with an outer portion of the tap body.

[0308] Clause 12: a tap assembly according to clause 10 or clause 11, wherein the waste grate comprises two or more separate portions.

[0309] Clause 13: a tap assembly according to any of clauses 10 to 12, wherein the waste grate is adapted to facilitate a rotation of the tap body relative to the waste outlet.

[0310] Clause 14: a tap assembly according to any of clauses 10 to 13, wherein the waste grate is adapted to vary an ease of rotation of the tap body relative to the waste outlet according to a wetness of the waste grate. Clause 15: a waste grate for use with the tap assembly of clause 1, adapted to rigidly secure the fluid communication channel of the tap body to the waste outlet.

[0311] Clause 16: a sink assembly comprising a tap assembly according to any of clauses 1 to 15 and further comprising a sink.

[0312] Clause 17: a method of assembling a tap assembly according to clause 1, comprising the steps of: providing a tap body comprising a fluid communication channel extending between an inlet and an outlet; providing a waste outlet; positioning the fluid communication channel through the waste outlet; and supporting the fluid communication channel to extend through the waste outlet in an assembled configuration.

Claims

CLAIMS1. A tap assembly (100) for a sink (302), the tap assembly (100) comprising:a drain outlet for attachment to the sink (302) to allow waste water to drain from the sink;a tap body (112) having an inlet (102) for receiving water from an inlet pipe and an outlet (104) for delivering water to a tap spout (114), the tap body defining a fluid communication channel (110) extending between the inlet (102) and the outlet (104); andan elongate tap spout (114) for directing water from the outlet of the tap body (112) into the sink; wherein the fluid communication channel (110) extends through at least a portion of the drain outlet through which waste water drains from the sink, in use.

2. The tap assembly of claim 1, wherein the inlet (102) passes through and is rigidly supported by a side wall of the drain outlet.

3. A tap assembly according to claim 2, wherein the drain outlet comprises a waste outlet (120), wherein the waste outlet (120) is adapted to be attached to the sink at a first end and is attached to or adapted to be attached to a waste channel at a second end; and wherein the inlet (102) passes through and is rigidly supported by a side wall (122) of the waste outlet.

4. A tap assembly according to claim 3, wherein the waste outlet (120) comprises a waste outlet upper (120a) for attachment to the sink at an upper end, and a waste outlet lower housing (120b) for attachment to a lower end of the waste outlet upper (120a) via a connector, the waste outlet lower housing (120b) being connectable to the waste channel at a lower end,wherein the inlet (102) passes through and is rigidly supported by a side wall (122) of the waste outlet lower housing (120b), and wherein the connector is adapted to permit the orientation of the inlet (102) relative to the waste outlet upper (120a) to be adapted when fully secured together.

5. A tap assembly according to any preceding claim, wherein the inlet (102) comprises a core base component (130) that is rigidly supported by a side wall of the drain outlet, wherein the tap body (112) is detachable from the core base component (130), and wherein the tap spout (114) is detachable from the tap body (112), resulting in a modular tap assembly (100).

6. A tap assembly according to claim 5, wherein the core base component (130) is detachable from the side wall of the waste outlet.

7. A tap assembly according to claim 5 or claim 6, wherein the core base component (130) has a top wall (130t) with an average thickness that is between 20% and 70% of the average diameter of the fluid communication channel extending through core base component (130), and more preferablybetween 30% and 50% of the average diameter of the fluid communication channel extending through the core base component (130).

8. A tap assembly according to any of claims 5 to 7 , wherein, in a cross sectional view of the core base component (130) along the direction of the fluid communication channel extending through the core base component, the core base component has a tear-drop or pear shape such that the thickness of the top wall (130t) is at least 3 times the thickness of a side wall of the core base component (130).

9. A tap assembly according to any preceding claim, wherein the tap spout (114) is configured to redirect the water through an angle of between 120 and 180 degrees.

10. A tap assembly according to any preceding claim, wherein the tap spout (114) comprises an adaptor configured to adapt one or more of: a flow rate of water from the tap spout; a flow aeration of water from the tap spout; and a spray pattern of the water from the tap spout.

11. A tap assembly according to any preceding claim, wherein the tap spout (114) is detachable from the tap body (112), wherein the tap assembly (100) comprises an automatic water shut-off comprising a flow stopping device that is configured to temporarily close an opening (112b-08) within the tap body (112), such that the automatic water shut-off prevents water from exiting the tap body when the spout is removed from the tap body, and wherein the tap assembly (100) comprises a displacement mechanism that is configured to displace the flow stopping device when the tap spout (114) is attached to the tap body (112) thereby disabling the automatic water shut-off.

12. A tap assembly according to claim 11, wherein the opening comprises a constriction, and wherein flow stopping device comprises a ball or sphere (112a-20), and wherein the displacement mechanism comprises an arm (1148) configured to displace the ball or sphere out of the constriction and against a side of the tap body (112) when the spout (114) is attached to the tap body (112).

13. A tap assembly according to claim 11, wherein the flow stopping device comprises a hinged valve that is configured to seal the opening, and wherein the displacement mechanism comprises an arm (1148) configured to open the valve away from the tap spout (114) when the tap spout (114) is attached to the tap body (112).

14. A tap assembly according to any of claims 11 to 13, wherein a release component extends longitudinally down a central axis of the tap spout.

15. A tap assembly according to any preceding claim, wherein the inlet comprises a water inlet component (150) that is attachable to the inlet to extend the inlet away from the side wall of the drain outlet by between 10 and 40cm, and more preferably between 20 and 30cm.

16. A tap assembly according to any preceding claim, wherein the tap assembly comprises a drain plug (220) configured to move between open and closed positions, wherein, in the open position, the drain plug allows water to flow between the drain plug and the drain outlet, and wherein, in the closed position, the drain plug seals against the drain outlet and prevents water from flowing between the plug and the drain outlet.

17. A tap assembly according to claim 16, wherein the drain plug (220) is resiliently biased to the open position by a spring (112a-12) positioned underneath the drain plug, and wherein the drain plug (220) comprises a skirt (222) that is configured to extend down the outside of the spring to cover and protect the spring.

18. A tap assembly according to claim 16 or claim 17, wherein the waste grate (200) is configured to move the drain plug (220) between the open and closed positions by rotation of the waste grate (200).

19. A tap assembly according to any preceding claim, wherein the waste grate (200) comprises a first part and a second part and a plurality of grate openings through which water can flow through the waste grate, wherein the grate openings function to entrain articles larger than the size of the grate openings, wherein the first part and second part are coaxial and rotatable relative to each other, and wherein a relative rotation of the first part to the second part varies the size of one or more of the grate openings.

20. A tap assembly according to any preceding claim, wherein the drain outlet comprises a waste outlet (120) and a waste channel (140), wherein the waste outlet (120) is adapted to be attached to the sink at a first end and is attached to the waste channel at a second end; wherein the inlet (102) passes through and is rigidly supported by a side wall (122) of the waste channel; and wherein the fluid communication channel extends along the waste outlet (120).

21. A tap assembly according to any preceding claim, wherein the inlet is integrally formed with at least part of the drain outlet.

22. A tap assembly according to any preceding claim, wherein the tap spout is integrally formed with the tap body.

23. A tap assembly according to any preceding claim, comprising a waste grate (200) configured to brace the tap body against the sink or the drain outlet, in use.

24. A tap assembly according to claim 23, wherein the waste grate is adapted to rigidly secure the tap body to the drain outlet.

25. A tap assembly according to any preceding claim, including a tap valve (400) located within or integrated with the tap spout (114).

26. The tap assembly of claim 25, wherein the tap valve (400) is arranged to control the flow of liquid through the tap spout (114) by rotation of the tap spout (114) about a substantially vertical axis.

27. The tap assembly of claim 26, wherein the tap valve (400) comprises a rotary valve connected between first and second parts (401, 402) of the tap spout (114).

28. The tap assembly of claim 27, wherein the rotary valve comprises a scissor or disc valve having first and second discs (403a, 403b) connected respectively to the first and second parts (401, 402) of the tap spout (114).

29. The tap assembly of claim 26, wherein the tap valve (400) comprises an axial valve including a mechanism for converting rotation of the tap spout (114) to axial motion of the tap valve (400).

30. The tap assembly of claim 29, wherein the axial valve comprise a poppet valve and the mechanism comprises a screw or cam mechanism arranged to move the poppet valve axially by the rotation of the tap spout (114).

31. The tap assembly of claim 25 or claim 26, wherein the tap valve comprises an actuator valve that is opened and / or closed by an actuator.

32. The tap assembly of any one of claims 25 to 31, wherein the tap spout (114) includes a limiting mechanism for limiting the degree of rotation of the tap spout (114).

33. The tap assembly of any preceding claim, wherein the drain outlet includes a side connector for attachment to a channel.

34. The tap assembly of claim 33 when dependent directly or indirectly on claim 3, wherein the side connector is provided at a side of the waste outlet (120) separate from the second end of the waste outlet (120), and a respective plug or cap is provided for removably closing one or other of the side connector and the second end of the waste outlet.

35. A sink assembly (300) comprising a tap assembly according to any preceding claim and a sink (302).

36. The sink assembly of claim 35, including a pump arranged to recirculate liquid from the drain outlet to the inlet (102).

37. A method of assembling a tap assembly (100) for a sink, the method comprising:providing a drain outlet (120);providing a tap body (112) having an inlet (102) for receiving water from an inlet pipe and an outlet (104) for delivering water to a tap spout (114), the tap body defining a fluid communication channel (110) extending between the inlet (102) and the outlet (104);providing an elongate tap spout for directing water from the outlet of the tap body into the sink; positioning the fluid communication channel to extend through at least a portion of the drain outlet through which waste water drains from the sink, in use; andpassing the inlet of the tap body through a side wall of the drain outlet.

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