Lubricant dispensing system and method

Abstract

A fitting (1) for a lubrication point of a device to be lubricated and a connector (10) for removably connecting to such a fitting for providing lubricant from a lubrication device (231) via the fitting to the device to be lubricated are disclosed. The fitting comprises an integrated circuit (2) for providing an identification code for identifying the fitting and a first electrical contact (7) for establishing an electrical path between the integrated circuit (2) and a processor (120) of the connector (10) when the fitting (1) and the connector (10) are connected. The connector comprises the processor (120) and a second electrical contact (8) for establishing the electrical path. The integrated circuit (2) is adapted to transmit data, including the identification code, to the processor (120) via the first electrical contact (7).

Description

Technical Field

[0001] This invention relates to the field of lubricant dispensers for lubrication of machines, vehicles, industrial assembly lines, etc. Specifically, this invention relates to accessories for lubrication points, such as grease nozzles, printed circuit board components, connectors for lubricant dispensers, grease tips for grease guns, lubricant dispenser systems, and related methods. Background Technology

[0002] Many, if not most, moving parts in a machine require lubrication. Lubricant dispenser systems are well known in the art, distributing lubricants, such as grease, to lubrication points on a machine. In a typical industrial plant, the number of lubrication points can easily exceed one thousand.

[0003] For example, bearings require frequent lubrication to ensure smooth operation throughout their expected lifespan. Nearly two-thirds of bearing failures can be attributed to insufficient lubrication. In humid conditions, unlubricated bearings will fail rapidly, for example, due to oxidation and the resulting loss of structural integrity. Even in dry conditions, insufficient lubrication can lead to wear and even mechanical deformation of moving parts in machines, potentially requiring premature maintenance or replacement. The costs of insufficient lubrication are not limited to the typically substantial maintenance and upkeep costs, but also include the opportunity cost of downtime. Furthermore, overlubrication should be avoided, as it can lead to overheating, potentially causing component damage. Another undesirable effect of excessive lubricant is unnecessary waste and / or contamination.

[0004] The source of lubricant, such as a container or liquid conduit, is typically removably connected to the lubrication point of the machine to be lubricated. Lubrication is usually performed manually, with multiple such lubrication points being maintained sequentially. The dispensing mechanism used in this manual lubrication process, such as a grease gun, typically includes an actuated (manual, pneumatic, or electric) plunger that, when needed—i.e., when connected to the lubrication point—pressurizes the lubricant to dispense it from an outlet, such as the grease nozzle of a grease gun.

[0005] Automatic systems are also known in the art, in which a controller directs the dispensing mechanism, for example, by actuating a plunger when an external signal is received or when a timer interval is too long. In addition to determining the timing of lubrication, the controller may determine the amount of lubricant to be dispensed and may also include status and / or error reporting devices, such as indicator lights.

[0006] In lubricant dispenser systems, the lubricant source is removably attached to lubrication points, such as those maintained manually and / or by robotic systems. This is particularly relevant as the lubrication points are not permanently connected to conduits supplying lubricant. Lubrication points typically include grease nipples, which can connect to complementary grease tips, such as the grease tip of a grease gun. Grease nipples, also known as grease fittings or Zerk fittings, are specially designed fittings for supplying lubricant (e.g., grease) under pressure to machines requiring lubrication, such as bearings. The basic structure of these fittings is described in detail, for example, in US1,697,217. The fitting is typically permanently attached to the lubrication point of the machine (or at least fixed and not intended to be removed), for example, to a bearing. The fitting can be fastened by threads. Various common sizes exist, including threaded fittings with M8 threads according to DIN 71412.

[0007] When the grease gun is connected to the fitting and pressure is applied, the small ball check valve, such as the small bearing ball included in the fitting, is pushed open when the force of the retaining mechanism (e.g., a retaining spring) is overcome by the pressure. Thus, the lubricant is held in the bearing by this check valve mechanism.

[0008] Grease nozzles typically have different convex shapes, which allows complementary concave grease gun tips to easily meet the fitting seal. This shape allows for some tolerance in the contact angle, enabling a quick and efficient connection between the grease gun and the grease nozzle, while also ensuring a sufficiently tight seal between these components (i.e., a temporary seal during lubrication operations).

[0009] However, the lubrication process is prone to error, especially when performed manually. Lubrication points may be skipped incorrectly, or the amount of lubricant applied may be incorrect—too much or too little. This risk is particularly exacerbated when each lubrication point may have its own optimal range of lubricant to apply and / or its own optimal lubrication frequency. As mentioned above, applying too little or too much lubricant, or too frequently or too infrequently, can have serious undesirable effects.

[0010] International patent application WO 2010 / 026559 discloses a lubricator device for dispensing lubricant to lubrication points on a machine. The device's control circuitry includes a memory for storing ID codes and a radio frequency (RF) transceiver, such as a radio frequency identification (RFID) module. The control circuitry can be programmed via received control signals, for example, to schedule lubrication events. The control circuitry can also incorporate the ID codes to transmit operational parameters, such as error conditions.

[0011] Therefore, multiple lubrication units can be provided on-site (e.g., in a factory) and controlled and monitored by a computer. Relay stations can be used as local gateways between radio frequency signal communications and telecommunications networks suitable for longer-range and / or higher-bandwidth communications. Summary of the Invention

[0012] The purpose of this invention is to provide a good, efficient, simple and / or compact apparatus and method for lubricating moving parts such as bearings in machines, vehicles and the like.

[0013] The advantage of this invention is that a good and reliable mechanical contact can be established between the fittings for the lubrication point (e.g., grease nipples) and the connectors of the lubrication device (e.g., the grease tip of a grease gun), such that the lubricant can be safely transferred without spillage and without the risk of contamination.

[0014] The advantage of this invention is that a good and reliable electrical contact can be established between the lubrication point fittings (e.g., grease nipples) and the lubrication device connectors (e.g., grease gun tips) to transmit signals representing lubrication point identification codes.

[0015] The advantage of this embodiment of the invention is that it provides good electrical isolation between two conductive contacts used to transmit signals between the fittings of the lubrication point and the fittings of the lubrication device.

[0016] The advantages of embodiments of the present invention are that the provided fittings for lubrication points, such as lubrication nozzles, can be implemented with a diameter of less than 25 mm, preferably in the range of 10 mm to 23 mm, for example, in the range of 13 mm to 17 mm, such as 15 mm. The advantages of embodiments of the present invention are that the provided fittings for lubrication points, such as grease nipples, can be implemented with a height of less than 10 mm, preferably in the range of 3 mm to 8 mm, for example, in the range of 5 mm to 7 mm, such as 5 mm, 6 mm, or 7 mm. A further advantage is that these diameter and height dimensions achievable according to embodiments of the present invention are compatible with typical and / or standardized specifications for dispensing grease nipples for molding bearings and industrial machinery. Typically, grease nipple space of less than 25 mm can be accommodated in industrial designs, and heights up to 7 mm can be accommodated.

[0017] The advantage of this invention is that the accessories for lubrication points and the connectors for lubrication devices provided can be manufactured easily and inexpensively.

[0018] The advantages of the embodiments of the present invention are that the provided fittings for lubrication points and connectors for lubrication devices are suitable for operating conditions in industrial environments, such as a temperature range of -20°C to 140°C and a lubricant pressure of 400 bar, preferably even up to 700 bar. Preferably, the devices according to embodiments of the present invention are also suitable for use in humid conditions. In particular, the advantages of the embodiments of the present invention are that the provided fittings for lubrication points and connectors for lubrication devices are corrosion-resistant.

[0019] The advantage of this invention is that good electrical and mechanical contact can be established between the lubrication point fittings and the lubrication device connector, unaffected by dust, grease, sand, moisture and / or other contaminants that may be present in the environment, and for example, not damaged by them.

[0020] The advantage of embodiments of the present invention is that they can achieve good durability. For example, accessories for lubrication points can be adapted for at least 5,000 lubrication events during their service life, while connectors for lubrication devices can be adapted for at least 100,000 lubrication events during their service life.

[0021] The advantage of this invention is that conventional methods for lubrication devices are not disrupted, or remain unchanged or minimally changed, when using the accessories and connectors according to the embodiments. For example, when using the accessories and connectors according to embodiments of the invention, the steps of cleaning the grease nipple with a cloth, connecting the grease tip to the grease nipple, operating the grease gun, and removing the grease tip from the grease nipple when providing the correct amount of lubricant to the machine being serviced are substantially the same as when using conventional grease nipples and grease tips. The advantage is that the accessories and connectors according to the invention can be easily connected and disconnected from each other in a user-friendly manner.

[0022] In a first aspect, the present invention relates to an accessory for a lubrication point of a device to be lubricated, the accessory being adapted for removable connection to a connector according to an embodiment of a second aspect of the invention to receive lubricant from the connector. The accessory includes...

[0023] - The body, in which a fluid conduit is formed, guides the lubricant into the lubrication point when lubricant is received from the connector via its inlet.

[0024] - An integrated circuit, suitable for providing an identification code to identify the accessory, and

[0025] - First electrical contact, which is used to establish an electrical path between the integrated circuit and the connector's processor when a connection is established between the accessory and the connector.

[0026] The main body includes a retaining end for securing the fitting to or onto a lubrication point. The integrated circuit is adapted to transmit data to the processor via a first electrical contact when a connection is established between the fitting and the connector, wherein the data includes the identification code.

[0027] In an accessory according to an embodiment of the present invention, the integrated circuit may include an electronic memory for storing the identification code.

[0028] In an accessory according to an embodiment of the invention, the integrated circuit may be adapted to generate the identification code in response to challenge information received from the processor via the first electrical contact when a connection is established between the accessory and the connector. The generated identification code may depend on the received challenge information, and the combination of the identification code and the challenge information allows the accessory to be uniquely identified by the processor.

[0029] In an accessory according to an embodiment of the invention, establishing an electrical path allows power from the connector to be used by the integrated circuit via the electrical path. In other words, the first electrical contact and the integrated circuit are adapted to receive power, for example, to power the integrated circuit via the electrical path.

[0030] In an accessory according to an embodiment of the invention, a first electrical contact may include at least two separate electrical conductors for establishing an electrical path by contacting at least two separate electrical conductors respectively connected to a connector, each of the at least two separate electrical conductors of the accessory being operatively connected to an integrated circuit.

[0031] In an accessory according to an embodiment of the invention, at least a portion of the body may be made of a conductive material and may form at least one of the at least two separate electrical conductors of the accessory.

[0032] An accessory according to an embodiment of the invention may include a contact element that mates around a neck segment of a body, wherein at least one of the at least two separate electrical conductors is included in the contact element.

[0033] Accessories according to embodiments of the present invention may include printed circuit boards, contact elements contained in printed circuit boards, and integrated circuits integrated in or mounted on printed circuit boards.

[0034] In an accessory according to an embodiment of the present invention, the integrated circuit may include a sensor for determining the characteristics of a lubricant in or on the accessory or the device to be lubricated when the accessory is installed in or on the lubrication point. The integrated circuit may be adapted to transmit the determined characteristics to a processor of the connector when a connection is established between the accessory (1) and the connector (10).

[0035] In an accessory according to an embodiment of the present invention, a portion of the body may be molded into a bolt to assist in securing the accessory to the lubrication point or lubrication point.

[0036] Accessories according to embodiments of the present invention may include a check valve in the fluid conduit.

[0037] In a second aspect, the present invention relates to a connector suitable for removably connecting to an accessory according to an embodiment of a first aspect of the invention, for providing lubricant from a lubrication device to the accessory connected to the connector when the lubrication device is operatively attached to the connector. The connector includes a processor and a second electrical contact, the processor for receiving an identification code from an integrated circuit of the accessory when connected thereto, and the second electrical contact for establishing an electrical path between the integrated circuit of the accessory and the processor via a first electrical contact of the accessory when a connection is established between the accessory and the connector.

[0038] In a connector according to an embodiment of the present invention, the processor includes an electronic memory for storing the received identification code, or storing the identification of the accessory based on the received identification code, optionally stored together with a timestamp to indicate when the accessory is mechanically and electrically connected to the connector and / or stored together with further data received from sensors in the accessory or the connector.

[0039] In a connector according to an embodiment of the invention, the processor may be adapted to store failed connection attempts in the memory, optionally along with a timestamp to indicate when the failed connection attempts occurred.

[0040] The connector according to an embodiment of the present invention may include a communication module for sending information to a computer (e.g., a server), and / or a display for displaying information to a user, and / or an alarm generator for issuing an alarm to a user in response to the information, wherein the information includes data determined by a processor based on accessory identification.

[0041] The connector according to an embodiment of the invention includes a metering device for automatically dispensing a certain amount of lubricant into the fitting, wherein the amount of lubricant is determined by a processor taking into account the identification of the fitting, and / or wherein the metering device is adapted to measure the amount of lubricant manually released into the fitting by an operator and to provide the measured amount to the processor.

[0042] In a third aspect, the present invention relates to a printed circuit board apparatus comprising a printed circuit board adapted to be attached to an accessory, such as a prior art accessory, the accessory being mounted or adapted to be mounted in or on a lubrication point of a device to be lubricated, such that the printed circuit board apparatus, when mounted in or on the accessory, forms an accessory according to an embodiment of the first aspect of the invention.

[0043] In a fourth aspect, the present invention relates to a lubrication device including a connector according to an embodiment of the second aspect of the invention, the connector being operatively attached to or integrated into the lubrication device.

[0044] In a fifth aspect, the present invention relates to a lubricant dispenser system (e.g., a kit) comprising at least one lubrication device according to an embodiment of the fourth aspect of the invention and at least one accessory according to an embodiment of the first aspect of the invention.

[0045] The invention relates in a sixth aspect to a method for maintaining a lubrication point of a device to be lubricated, wherein an accessory is fastened to the lubrication point. The method includes obtaining a lubrication device to provide lubricant to the lubrication point, wherein the lubrication device includes a connector. The method includes removably attaching the connector to the accessory such that a fluid conduit is formed between the interior of the device to be lubricated at the lubrication point and the lubricant container of the lubrication device, and such that an electrical path is formed between an integrated circuit of the accessory and a processor of the connector via a first electrical contact of the accessory and a second electrical contact of the connector. The method further includes sending an identification code from the integrated circuit via a radial processor to identify the accessory.

[0046] These and other aspects of the invention will become apparent and will be elucidated with reference to (some) embodiments described below.

[0047] The independent and dependent claims describe the specific and preferred features of the invention. Features of the dependent claims may be combined with features of the independent claims and other dependent claims, as deemed appropriate, and not necessarily only those expressly recited in the claims. Attached Figure Description

[0048] Figure 1 An accessory according to an embodiment of the present invention is shown.

[0049] Figure 2 An accessory according to an embodiment of the present invention is shown.

[0050] Figure 3 An accessory according to an embodiment of the present invention is shown.

[0051] Figure 4 An accessory according to an embodiment of the present invention is shown.

[0052] Figure 5 An accessory according to an embodiment of the present invention is shown.

[0053] Figure 6 An accessory according to an embodiment of the present invention is shown.

[0054] Figure 7 A component of an accessory according to an embodiment of the present invention is shown, such as a printed circuit board.

[0055] Figure 8 An accessory according to an embodiment of the present invention is shown.

[0056] Figure 9 A component of an accessory according to an embodiment of the present invention is shown, such as a printed circuit board.

[0057] Figure 10 A connector according to an embodiment of the present invention is shown.

[0058] Figure 11 Some components of a connector according to an embodiment of the present invention are shown.

[0059] Figure 12 A component of a connector according to an embodiment of the present invention is shown.

[0060] Figure 13 A component of a connector according to an embodiment of the present invention is shown.

[0061] Figure 14 shows the components of a connector according to an embodiment of the present invention.

[0062] Figure 15 shows a connector according to an embodiment of the present invention.

[0063] Figure 16 A connector according to an embodiment of the present invention is shown.

[0064] Figure 17 A connector according to an embodiment of the present invention is shown.

[0065] Figure 18 A connector according to an embodiment of the present invention is shown.

[0066] Figure 19 A connector according to an embodiment of the present invention is shown.

[0067] Figure 20 A connector according to an embodiment of the present invention is shown.

[0068] Figure 21 A lubricant dispenser according to an embodiment of the present invention is shown.

[0069] Figure 22 A lubricant dispenser according to an embodiment of the present invention is shown.

[0070] The accompanying drawings are illustrative and non-limiting. Elements in the drawings are not necessarily shown to scale; for example, elements may be exaggerated or reduced in proportion to maintain clarity and understandability. The invention is not necessarily limited to the specific embodiments shown in the drawings. Reference numerals in the claims should not be construed as limiting the scope. The same reference numerals may denote the same or similar elements in different drawings. Detailed Implementation

[0071] Despite the exemplary embodiments described below, the invention is limited only by the appended claims. The appended claims are expressly incorporated herein by reference, wherein each embodiment, and any combination of embodiments permitted by the dependent structures defined by the claims, constitutes an independent embodiment of the invention.

[0072] The use of "including, but not limited to, the features, elements, or steps described herein, does not exclude other features, elements, or steps. Therefore, this specifies the presence of the mentioned features, but does not exclude the presence or addition of one or more features."

[0073] The order references in the specification and / or claims, such as first, second, etc., may be used to identify similar elements, but do not necessarily define the order by time, space, rank, or any other means. These terms may be used interchangeably where appropriate, and embodiments of the invention may involve sequences other than those explicitly described or illustrated herein.

[0074] Spatial references in the specification and / or claims, such as top, bottom, above, below, etc., are for descriptive purposes and not necessarily only used to describe relative positions. It should be understood that embodiments may involve other arrangements of elements described using such spatial references, unless it is obvious to a person skilled in the art that such relative positioning is necessary to achieve the desired technical effect, i.e., to solve the fundamental objective technical problem. Therefore, it is apparent that these terms are interchangeable where appropriate, and embodiments of the invention may operate in orientations other than those described or illustrated herein.

[0075] Various specific details are presented in this detailed description. Embodiments of the invention may be made without these specific details. Furthermore, for the sake of clarity and brevity, well-known features, elements, and / or steps are not necessarily described in detail.

[0076] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the description of that embodiment is included in at least one embodiment of the invention. Therefore, the phrases "in one embodiment" or "in an embodiment" appearing in various places throughout this specification do not necessarily refer to the same embodiment, but may do so. Furthermore, it will be apparent to one of ordinary skill in the art from this disclosure that particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. References to "(some) embodiments" or "in (some) embodiments" should be interpreted in the same manner.

[0077] Various features of the invention may be combined in a single embodiment, drawing, or description therein to simplify the disclosure and aid in understanding the inventive aspects. This should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the appended claims, inventive aspects may lie in fewer than all features of a single foregoing disclosed embodiment, as expressly described in the specification. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0078] Furthermore, while some embodiments described herein include features that are not included in other embodiments, as those skilled in the art will understand, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the appended claims, any claimed embodiment may be used in any combination.

[0079] Numerous specific details are set forth in the description provided herein. However, it should be understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0080] The invention relates in a first aspect to an accessory for a lubrication point of a component (e.g., a bearing) of a machine or vehicle, the accessory being adapted to be removably and temporarily connected to a connector according to a second aspect of the invention, thereby receiving lubricant from the connector and directing the lubricant to the lubrication point.

[0081] refer to Figures 1 to 9 Various features of accessory 1 according to an embodiment of the present invention are shown (but not all features shown in all figures are necessarily the same accessory according to the embodiment). Please note that not all features are shown in every figure in order not to complicate the illustrations and to aid in understanding the basic principles.

[0082] The invention relates in a second aspect to a connector for a lubrication device, such as a grease gun, the connector being adapted for removable and temporary connection to an accessory according to a first aspect of the invention, thereby providing lubricant from the lubrication device to the accessory. The connector may include a grease gun tip, or be adapted to be attached as an accessory or add-on to a conventional grease gun tip.

[0083] Reference Figures 10 to 20 Various features of the connector 10 according to an embodiment of the present invention are shown (but not necessarily the same connector according to the embodiment is shown in all figures). Note that not all features are shown in every figure in order not to complicate the illustrations and to aid in understanding the basic principles. Figure 11 It shows Figure 10 The exploded view of the connector shown is provided to help the reader better distinguish the components of the illustrative connector 10. Figure 10 Additionally, a mating accessory 1 according to an embodiment of the invention is shown, wherein the connector 10 and the accessory 1 engage with each other. This is for illustrative purposes only and should not be construed as the accessory 1 forming part of the connector 10.

[0084] In a third aspect, the present invention relates to a printed circuit board element for connection to a lubrication point, i.e., a fitting known in the art, to jointly form a fitting conforming to an embodiment of the first aspect of the present invention.

[0085] The present invention relates in a fourth aspect to a grease gun, comprising a connector according to an embodiment of the second aspect of the invention.

[0086] The invention relates in a fifth aspect to a lubricant dispenser system, for example comprising at least one grease gun according to an embodiment of a fourth aspect of the invention and one or more accessories according to an embodiment of a first aspect of the invention, such as grease nozzles.

[0087] Accessory 1 may specifically be a grease nipple, such as a grease nipple with a tapered tip. The accessory includes a body 3 in which a fluid conduit 4 is formed. For example, the body may be made of steel, such as stainless steel. The steel material may be hardened and / or electroplated, such as galvanized. The fluid conduit 4 is adapted to allow lubricant to flow through it.

[0088] For example, the body 3 may include a neck section 26 located (along the longitudinal axis) between the bolt portion 12 and the head section, wherein the diameter of the fitting is narrower in the neck section than (at least at the widest cross-section) in both the bolt section and the head section. The head section may be located at the inlet end of the body, and may include, for example, an inlet 6.

[0089] According to an embodiment of the second aspect, the contact surfaces of the accessory body 3 and the connector 10 may have complementary shapes, for example, shapes that mate with each other. The body or a portion of the body of the accessory may have a convex shape, while the connector may include complementary concave ends. Or similarly, the body or a portion of the body of the accessory may have a concave shape, while the connector may include complementary convex ends. Although complementary surfaces with matching curvatures may be preferred, in embodiments according to the invention, it is not necessarily excluded that the accessory and its corresponding connector have flat contact surfaces.

[0090] Therefore, accessory 1 can receive lubricant via connector 10. The mechanical connection between these components can be based on existing technology systems, such as known grease nipples and complementary grease gun heads.

[0091] like Figure 10 and Figure 11 As shown, connector 10 can be similar to hydraulic coupler M10x1 internal thread SW 13 mm – diameter 15 mm, part number 12631, such as Pressol in Germany as of the date of this application. The connector is commercially available from a joint-stock company. Features of such prior art devices can be considered as included among the optional features of the connector 10 according to embodiments of the present invention. However, this is merely an example, and embodiments of the connector 10 according to embodiments of the present invention are not limited to the features of this specific example. Furthermore, it should be noted that different sizes, specifications, and shapes are known in the art for lubricant fittings and corresponding connectors for lubricant dispensers, and embodiments of the present invention should not be construed as being limited to specific sizes, specifications, and / or shapes known in the art, or even not currently known.

[0092] Connector 10 is adapted to be removably and temporarily connected to fitting 1, for example in the form of a tapered grease nipple according to an embodiment of the invention, and to supply lubricant from a lubrication device, such as a grease gun, to the fitting. For example, as is known in the art, an elastic element (not shown), such as a spring, can press the flexible element 112, such as a vulcanized rubber element, against and / or around the tapered head of the fitting. It should be noted that in some embodiments, the flexible element 112 can store sufficient mechanical energy when compressed to act as an elastic element, such as a spring, so that a separate elastic element is no longer needed. The flexible element 112 is generally configured to mate around and / or onto the head of the fitting, i.e., around the inlet 6. The elastic element 112 has a through-hole or conduit 113 defined therein to allow lubricant to travel from the lubricant dispenser to the inlet 6 of fitting 1 when using the device. The elastic element can be tensioned by a hand force in the opposite direction, i.e., by the operator pressing connector 10 at least against and / or over the inlet 6 of fitting 1, for example, against and / or over the head of fitting 1. The flexible element 112, pressed against the fitting, forms a tight seal between the connector 10 and the fitting 1, allowing lubricant to be delivered without leakage and / or contamination from the external environment. Between the flexible element 112 and the fitting in use, the connector 10 may include a washer or sleeve 114. The washer or sleeve 114 may be made of a suitable low-friction material, such as polyamide, for example, "nylon". The flexible element 112 may be (mechanically) connected to (or mechanically contacting) a support structure 115 and / or supported by the support structure 115, such as a metal component, such as a metal housing, which is generally located on the opposite side of the flexible element 112, rather than the side where the washer or sleeve 114 is in contact with the fitting during use. Therefore, the washer or sleeve 114 and the support structure 115 protect the flexible element from wear and tear. The connector 10 may also include a plurality of clamps 111 positioned radially outward of the flexible element (e.g., angled around the flexible element). When the connector is pushed far enough above the accessory, the clamp 111 can be locked in a locally stable position (i.e., a locally optimal but not globally optimal position), which is achieved by forming a temporary contraction around the neck portion 26 of the accessory.

[0093] The elastic element can (locally) stabilize the optimal state of local mechanical potential energy corresponding to the unsteady position. As is known in the art, this configuration can be used to create a tight seal and can be easily disengaged by increasing the angle of the longitudinal axis of the fitting (head) relative to the longitudinal axis of the connector. This creates a smooth transition from the locally unsteady position to the overall optimal position, in which the elastic element releases its tension through the sliding movement of one side of the elastic element on the head of the fitting (at least initially). The support structure 115 can be fastened to the second support structure 116, for example by a threaded connection or other fastening device. This second support structure 116 can be a metal housing that (tightly) mates with the first support structure 115, or vice versa.

[0094] A channel can be defined in the first support structure 115 through which lubricant flows from the dispenser device to the channel in the flexible element 112. Therefore, the channel can have a constriction, through which a ball 117 can be provided as a ball check valve. This ball can be tensioned by a suitable elastic element (not shown), such as a spring, against the constriction of the channel in the support structure 115. Thus, when the connector 10 disengages from the fitting 1 after lubricant supply, the ball check valve can prevent (or reduce) lubricant outflow from the connector.

[0095] Figure 14 to Figure 16 Another illustrative connector 10 according to an embodiment of the invention is shown. This connector may be similar to the universal locking grease gun connector UC3102, commercially available from Univer-Co, Canada, as of the date of this application. Features of this prior art device can be considered as included among the optional features of the connector 10 according to an embodiment of the invention. However, this is merely an example, and embodiments of the connector 10 according to an embodiment of the invention are not limited to the features of this specific example. Furthermore, it should be noted that different sizes, specifications, and shapes are known in the art for lubricant fittings and corresponding connectors for lubricant dispensers, and embodiments of the invention should not be construed as being limited to specific sizes, specifications, and / or shapes known in the art, or even not currently known.

[0096] In this illustrative connector 10 conforming to an embodiment of the present invention, a channel is defined in the base 201 and the core 202, through which lubricant can flow into the inlet 6 of the fitting 1 when engaged. The core 202 can be configured to slide relative to the base 201. An elastic element 203, such as a spring, provides tension during engagement, causing the core 202 to form a tight seal around the head of the fitting 1. Furthermore, the core 202 is also fitted with a sealing element 209, such as a rubber element, to provide a watertight seal between the core 202 and the base 201. The base 201 accommodates a plurality of balls 204, for example forming sliding bearings, such as in cylindrical grooves provided in the inner surface of the base. In the non-engaged state, the balls 204 are held in place by the core 202, the base 201, and the sliding cap 205. In the engaged state, ball 204 is inserted into a groove formed by the neck segment of accessory 1 and is pressed tightly around the neck segment by sliding the sliding cover 205 downwards. The sliding cover has a smaller inner diameter around the ball when slid into the engaged position and a wider inner diameter around the ball when slid into the non-engaged position. By sliding the sliding cover 205 upwards (away from the accessory), connector 10 can disengage from accessory 1, so that the ball is no longer clamped around the neck of the accessory and can be moved to release the head of the accessory. Figure 19 The diagram illustrates the configuration of the illustrative connector 10 when engaged with the accessory 1. The connector 10 may include at least one electrical contact element 151, as shown in FIG14, which is supported by a sliding cover 205 of the assembly 152.

[0097] It should be noted that although the connector 10 according to an embodiment of the present invention may be similar to the connector of the prior art from a mechanical perspective, there may still be non-obvious differences. For example, in the illustrative embodiment, FIG14 and Figure 19 The ball 204 shown, such as a steel ball, is held around the neck of the fitting by a sliding cover 205 (e.g., a housing or shell) when engaged with the neck of the fitting. Compared to similar prior art systems, the sliding cover can traverse a longer distance in the longitudinal direction of the device, for example, by adjusting the spring system 281 that provides the sliding configuration or by including a secondary sliding frame. Thus, the sliding cover 205 can slide further away in the longitudinal direction from the engagement end, where the connector is attached to the fitting in operation. In this example, this additional distance is provided to provide the additional space needed to accommodate the electrical contacts(s)151, while still providing mechanical clamping action in the correct position.

[0098] Returning to accessory 1, body 3 includes a fixed end 5 for permanently or at least securely securing the accessory to or onto a lubrication point. Specifically, when secured to the lubrication point, a seal is formed between the lubrication point and the body around the body (i.e., at least around a portion of the body, such as around the fixed end of the body), such that the fluid conduit 4 forms a conduit to introduce lubricant into machine parts, such as bearings, while the seal around the body prevents lubricant from flowing back out of the machine parts.

[0099] For example, the body 3 may include a thread 11 (e.g., a convex thread; e.g., an external thread) at the fixed end 5 to allow the fitting 1 to mate with a complementary thread (e.g., an internal thread; e.g., an internal thread) formed in the lubrication point. This thread may be a narrowed thread.

[0100] For example, the thread used to mate the body 3 of accessory 1 to the machine to be lubricated can be an ISO metric thread, according to ISO 261 or ISO 262, such as an M8 thread, which has a nominal diameter of 8 mm (e.g., the maximum external thread diameter) and a “coarse” pitch of 1.25 mm.

[0101] The main body 3 may include (or may be shaped as) a bolt 12, such as a hexagonal nut outer surface, to allow the fitting 1 to be fitted onto / into a lubrication point using a wrench or similar tool. For example, the bolt 12 may be an M9 hexagonal bolt, such as a hexagonal bolt in the range of M9 to M12.

[0102] The body includes an inlet end, such as an inlet 6 opposite to the fixed end 5. A check valve may be provided in the fluid conduit 4, adapted to prevent lubricant from flowing from the fixed end 5 to and out of the inlet 6, and adapted to allow lubricant to flow from the inlet 6 to the fixed end 5 when the lubricant pressure exceeds a predetermined yield pressure.

[0103] As is known in the art, such a check valve may include a ball 21 and an elastic element 22, such as a spring, for pressing the ball in the fluid conduit toward the inlet, such that the inlet is blocked by the ball in a neutral position. When lubricant is supplied at the inlet end under pressure exceeding the yield pressure, the ball is pressed back into the fluid conduit by this pressure, entering a stressed position, in which lubricant can flow through the ball into the fluid conduit and through the fixed end into the component to be lubricated.

[0104] Accessory 1 may be similar to grease nipples known in the art, such as grease nipples with tapered heads according to DIN 71412 and / or DIN 71418 and / or ISO 3799 and / or ISO 6392 and / or DIN 3405 and / or DIN 3404 and / or SAE J534 standards. If different versions of the above standards exist, refer to the latest version available to the public prior to the date of this application. For example, the accessory may be a conical lubricating nipple according to DIN 71412:1987-11. Any features of such conical lubricating nipples specified or mentioned in the above standards are hereby explicitly included as optional features for accessory 1 according to embodiments of the present invention.

[0105] As shown in the figure, the fitting can be a "straight" fitting, that is, the inlet end and the fixed end are arranged at opposite ends of the fitting along a straight longitudinal axis, but the embodiments of the present invention are not limited to this. For example, as is known in the art, the fitting can form an angle between the fixed end and the inlet end, such as a 45° angle or a 90° angle (the embodiments are not necessarily limited to these specific angles).

[0106] The accessory includes an integrated circuit 2, such as a microchip adapted to provide an identification code for (e.g., uniquely) identifying the accessory. The integrated circuit may include electronic memory for storing or generating an identification code for (e.g., uniquely) identifying the accessory.

[0107] Integrated circuit 2, such as a microchip, may be embedded in a protective material, such as a polymer, to physically (e.g., mechanically) protect and (e.g., electrically and / or thermally) isolate the integrated circuit. For example, integrated circuit 2 may be cast or molded within a package formed of a casting or molding material, such as a solid material, such as a time-solid or thermosetting material.

[0108] For example, such as Figure 3As shown, integrated circuit 2 can be embedded in a protective material located within the fitting, such as inside the body, at or near the fixed end 5. However, embodiments are not limited to this. For example, the integrated circuit, such as being embedded in a polymer material, can be located inside and / or below the thread 11 (below refers to the fixed end further toward the body relative to the thread positioning). Thus, the integrated circuit, in use, i.e., during installation, can be located inside the machine to be lubricated. The integrated circuit may include one or more sensors for detecting one or more characteristics of the lubricant and / or the machine, which, when connected, can be transmitted via a connector to a receiver, such as a processor of the connector. For example, one or more characteristics may include the detection of the presence of lubricant, for example, detecting when the machine is dry to the point of issuing a warning to draw the operator's attention to this fact, for example, thereby initiating a thorough inspection. For example, one or more characteristics may include the viscosity of the lubricant, the temperature of the lubricant, the pressure of the lubricant, or other intrinsic or extrinsic properties of the lubricant. For example, one or more characteristics may include vibration or motion (e.g., linear or angular velocity or acceleration), for example, thereby detecting whether the machine to be lubricated is running or detecting whether the machine to be lubricated is idling.

[0109] However, in embodiments where the integrated circuit is located below the thread, the height of the fitting may be increased compared to similar prior art fittings. This may mean that the lubrication points of some existing machines to be lubricated do not provide sufficient space to house the fitting. Therefore, for fittings according to such embodiments of the invention, it may be necessary to deepen the screw holes provided at the lubrication points of the machine. This can be cumbersome, or at least require additional work, and it is impossible to avoid damaging the machine to be lubricated and / or voiding the manufacturer's warranty in all cases. Therefore, according to some embodiments of the invention, it is preferred to house the integrated circuit in or on the fitting at different locations, even though the aforementioned below-the-thread location may be preferred for other reasons, such as to allow the integrated circuit to perform sensor measurements indicating the presence of lubricant before lubricant replenishment and / or indicating the characteristics of the machine or the internal environment of the machine.

[0110] In addition, the temperature tolerance of the integrated circuit and the typical operating temperature of the machine intended for lubrication (or its specific bearings) can also be taken into account when selecting the appropriate location of the integrated circuit in or on the fitting (and when selecting the protective material for embedding the integrated circuit).

[0111] Each part and its associated lubrication point (when the part is installed on it) can have a unique identification code. Each part can be pre-programmed to store a unique identification code, for example, during the part's manufacturing process. While these codes are preferably unique, it is clear that when numbers (not limited to numeric codes) are assigned from a sufficiently large range, the probability of two parts with the same identification code being used simultaneously in the same factory or vehicle can be kept sufficiently small, i.e., essentially zero.

[0112] Electronic memory can include persistent (non-volatile) rewritable memory, such as flash memory. Electronic memory can also include read-only memory (ROM) in the strict sense, such as hard-wired diode matrices or mask ROM integrated circuits. The electronic memory can also include (electrically) erasable programmable read-only memory (EPROM or EEPROM).

[0113] Integrated circuits can also include physically unclonable functions (PUFs). Therefore, a (unique) identifier for an accessory can be established by reflecting the characteristics of the PUF's microstructure. However, this structure itself may advantageously not be used to reveal the challenge-response interaction of the accessory. Therefore, the identifier can be formed by a challenge-response authentication mechanism. A challenge can be submitted to the integrated circuit via a connector, which can apply a corresponding physical stimulus to the PUF structure. The result can then be returned to the connector via a first electrical contact 7. Since the PUF responds to challenge stimuli in an unpredictable but repeatable manner, a more secure authentication and safety system can be advantageously provided. For example, each grease gun can have its own challenge signature and can maintain a list of responses to that challenge to identify different grease nozzles to be interacted with. Furthermore, this challenge signature can change periodically, and after identifying a grease nozzle, the grease gun can issue a second challenge corresponding to the next signature it will use to receive and store the verified response of the grease nozzle to the new challenge. Furthermore, the integrated circuit can be adapted (e.g., programmed or designed) to accept only challenges that meet the verification criteria. This allows grease nozzles to identify only the original connector mating, through security features codified by verification standards. Furthermore, if the challenge fails to meet the verification standards, the accessory's integrated circuitry can be programmed to respond randomly (i.e., unpredictable and non-repeatable or difficult to repeat). Therefore, by relying on a challenge-response authentication system rather than a single identification key, environmental security is enhanced; for example, tampering with nozzles or grease guns becomes more difficult, and manufacturers can be protected to some extent from using counterfeit parts.

[0114] While a method for authenticating and identifying accessories connected to a connector has been described, such as based on physical non-cloning features and challenge-response mechanisms, it should be clear that the same principles can be embodied in different ways. For example, instead of providing a PUF (Public Activated Function), the encryption key can be stored in conventional memory, and authentication can be implemented based on, for example, a combination of private and public key communication. For instance, the connector (e.g., a grease gun) stores the public key of the accessory (e.g., a grease nozzle), while the integrated circuit in the accessory stores the corresponding private key. A public key authentication mechanism can then be used to authenticate and identify the accessory. Two-way authentication can also be used, where each accessory also stores a private key, while the accessory's public key is stored within the accessory for reverse authentication.

[0115] Therefore, each component 1 in an environment, such as a factory or vehicle, can have a unique identification code, which can be pre-programmed or constructed in an integrated circuit 2, or generated by the integrated circuit in a unique but repeatable manner.

[0116] When a connection, i.e., a mechanical and electrical connection, is established between accessory 1 and connector 10, the processor 120 of the connector receives an identification code from integrated circuit 2 of accessory 1. Therefore, the connector and accessory of the lubrication device are configured to only allow data (specifically the identification code) to be transmitted to the processor when a proper mechanical connection is established between the accessory and the connector. The connector includes processor 120, which may include electronic memory. While the term "processor" is used, it does not necessarily mean a general-purpose programmable processor, such as a central processing unit, but can also refer to an integrated circuit specifically designed to perform the functions described herein, such as an application-specific integrated circuit (ASIC), or a processing unit that can be physically constructed rather than programmable in the conventional sense, such as a field-programmable gate array (FPGA) device. Other devices that can be designed, constructed, and / or programmed are also considered to fall within the scope of the general term "processor," such as distributed processing systems (e.g., where the connector only interfaces to remote components specifically for processing), parallel processing systems, such as graphics processing units, cell processors, and similar devices. The processor is adapted to receive the identification code from the integrated circuit of the accessory. Processor 120 may be adapted to store the identification code in memory, or to store the identification of the accessory determined based on the identification code in memory, for example, in a log. Logs can include timed events, such as timestamps, to indicate when each specific and identified accessory is mechanically and electrically connected to the connector.

[0117] As an example, the log stored in memory may include multiple events, each of which may include a timestamp, an identifier of the accessory connected to the connector, and a temperature measurement. For example, the temperature measurement may be obtained by a sensor integrated into the connector, such as measuring the temperature of the nozzle via thermal contact, or by a sensor integrated into the accessory, such as in an integrated circuit.

[0118] Therefore, the memory of processor 120 can be adapted to store, for example, connection records. Other data can also be stored, such as the amount of lubricant injected through the connector. Failed attempts to connect the connector to the fitting can also be recorded, such as when an abnormally short electrical contact occurs, for example, a connection lasting less than a predetermined time threshold, or a connection in which no lubricant was injected. Processor 120 can also record failed connection attempts due to mechanical incompatibility between the connector and the fitting, in which case the connector is designed to mechanically connect only with fittings having appropriate geometry (in a "lock and key" manner). Processor 120 can also record attempts to operate the lubricant dispensing system when an abnormality warning is in effect (the characteristics of the abnormality signal will be described in detail below). Processor 120 can also receive additional data, such as sensor data, from integrated circuit 2 and store this information or the data generated therefrom in its memory.

[0119] Connector 10 may include communication module 130, such as WiFi, Bluetooth, GPRS, or other wireless communication modules, for transmitting information stored in memory to a server. Communication module 130 is operatively connected to processor 120. Information may be exchanged with the server on a continuous basis, such as periodically during service operation or after service operation has completed. The communication module may also be adapted to exchange data via a wired bus or network, such as an Ethernet connection and / or a Universal Serial Bus (USB) interface, but is not limited to these illustrative interfaces.

[0120] Connector 10 may include a display 140 for showing information to a user. The information displayed may include information determined by processor 120 based on the identification of accessory 1. The display may show a schematic diagram of the factory, highlighting the installation location of the identified accessory. The display may show the quantity and / or type of lubricant associated with the identified accessory. The display may show the service cycle associated with the identified accessory, or an indication to attract the user's attention when the next service time for a lubrication point has not yet been reached or has substantially passed.

[0121] Reference Figure 18Connector 10 may include an alarm generator 181, such as a light source, sound source, and / or vibration source. This alarm generator 181, such as at least one light-emitting diode (LED) mounted within or on the connector, for example within its transparent base cover, may be controlled by processor 120 to indicate a status to the operator. For example, this status may indicate that an electrical connection with the accessory has been established and a communication path with the integrated circuit has been established. This status may also indicate whether the identification of the connected accessory corresponds to a target accessory, for example, the next accessory in a sequence of accessories to be maintained. This status may also indicate whether a fault condition has been detected. For example, a sensor in the integrated circuit may indicate a lubrication point, i.e., a lubricant shortage or below a predetermined threshold pressure, and / or above a predetermined threshold pressure, before pressurization by the lubricant dispenser connected to the accessory via the connector. In embodiments where the grease gun is adapted to identify the lubricant present therein, for example by reading an RFID tag provided to the grease reservoir, a status indicating that the lubricant type associated with the identification of the connected accessory does not correspond to the lubricant present in the grease gun can be indicated. Different statuses may be indicated by, for example, different colors of light. For example, alarm generator 181 may include one or more multi-color LEDs. A convenient exemplary signaling scheme may use a green signal to indicate that a correct mechanical and electrical connection has occurred, a yellow signal to indicate the presence of a non-critical anomaly, and a red signal to indicate a critical anomaly.

[0122] Users can also use purely mechanical indicators to alert them to incorrect or incomplete connections. In one example, a clamp or lever is provided that can only be positioned in its target location when the mechanical connection is complete, making any deviation from the target location a visible indication to the end user that the mechanical connection may be incomplete. In another example, a clearly identifiable signal portion (e.g., a brightly colored portion) of connector 10 becomes visible only when the mechanical connection is complete, for example, with a sleeve having a window that is moved by the fitting during connection to show the signal portion through the window; the absence of a visible signal portion again clearly indicates to the user that the mechanical connection is not complete. Conversely, the connector can be equipped with a clearly identifiable signal portion indicating that a correct mechanical connection has not yet been achieved, which is then obscured by a movable portion once a correct mechanical connection is achieved.

[0123] It is well known that users sometimes ignore warnings and continue the lubricant dispensing process under inappropriate conditions. To prevent system damage caused by lubricant dispensing when the system type expected by the connector does not match the actual system or when a malfunction occurs, the connector 10 may be configured to electronically prevent lubricant dispensing to the accessory when the identification code of the connected accessory does not match the target accessory or when one of the aforementioned malfunctions is detected (it should be noted that this safety function may be provided independently of the warning signal). Specifically, the system may be configured to dispense lubricant to the accessory only when the identification code matches a predetermined standard. Additionally or alternatively, the connector 10 may be configured to physically prevent lubricant dispensing to the accessory unless the target accessory is properly connected to the connector. The accessory and connector may be designed such that proper engagement causes a portion of the accessory to engage with the internal portion of the connector, thereby opening a flow path for the lubricant, while disengagement closes the flow path. In one example, the internal portion of the accessory is a valve preloaded in the closed state by means of a spring or other suitable elastic element and capable of being opened by contact with a portion of the connected accessory. In another example, a portion of the outer surface of the fitting includes one or more longitudinal grooves or indentations forming a channel for lubricant, while the inner portion of the fitting is a radial seal that mates with the outer surface of the distal end of the fitting, thereby closing the channel for lubricant until the fitting is fully pressed into the fitting, so that the longitudinal grooves or indentations are positioned as bypasses of the radial seal.

[0124] Connector 10 may include a metering device 150 for automatically dispensing a predetermined amount of lubricant into the fitting, wherein the amount of lubricant is determined by processor 120 after taking into account the identification of fitting 1. Alternatively, the metering device may measure the amount of lubricant released into the fitting by an operator. This actual amount of lubricant applied may be shown to the user, for example, along a target amount determined based on fitting identification, and / or may be stored in memory.

[0125] Connector 10 may include a power source 160, such as a battery or mains connection. This power source can power processor 120 and other optional components that may require power.

[0126] An electrical connection allows the power supply 160 of connector 10 to be connected to the integrated circuit 2 of the accessory, and once powered, integrated circuit 2 can transmit its identification code via the connection. Processor 120 and integrated circuit 2 can be adapted to exchange data via a suitable data communication protocol and / or data communication bus system, such as single-wire, UART, CAN, LIN, etc. Preferably, the data communication protocol and / or bus system is suitable for communication via paired wires, which also serve to provide paired power. However, the embodiments are not limited to this; for example, two or more (multiple pairs) of independent electrical conductors can be mated between the accessory and the connector, allowing power and communication signal lines to be established independently.

[0127] However, more complex data interaction methods than simply transmitting a stored identification code upon activation (receiving power) are also envisioned. For example, as mentioned above, the connector's processor could initiate an identification process by sending a challenge to the accessory's integrated circuit, which could then respond with a response that varies depending on the challenge. The response could be appropriate to enable the processor to uniquely identify the accessory in consideration of the challenge sent. Other variations of this process are not excluded, for example, those related to known authentication and / or identification methods. The identification process could include, but is not limited to, simple one-way transmission of a constant identifier (e.g., pre-programmed for each accessory but obviously different between accessories), public-key authentication, symmetric-key authentication, and / or a combination of authentication and digital signatures (e.g., two-way authentication of both the accessory and the connector).

[0128] During lubrication, the identification code of accessory 1 can be read by connector 10, or, more generally, digital communication between the accessory and the connector is used to authenticate and identify a specific accessory, for example, using an encrypted authentication method.

[0129] Digital communication (e.g., identification codes or, generally, information allowing identification of the accessory) is conducted via the first electrical contact 7 of the accessory and the second electrical contact 8 of the connector. Advantageously, the connector according to the embodiment can be disposed in or on the grease gun, such that the actions taken by the operator during lubrication remain substantially consistent with conventional lubrication methods. The shape of the accessory 1, such as the grease nozzle, and the method of clamping the connector, such as the grease tip, on the accessory can be substantially the same as prior art methods, such that the actions taken by the operator remain substantially unchanged. However, according to the embodiment, the clamping method can also be reinforced to ensure good electrical contact while causing only minimal interference with the operator's normal actions.

[0130] Accessory 1 includes a first electrical contact 7, and connector 10 includes a second electrical contact 8. When a connection is established between accessory 1 and connector 10, i.e., a mechanical and electrical connection, the first electrical contact 7 and the second electrical contact 8 are adapted to establish an electrical path between the integrated circuit 2 of accessory 1 and the processor 120 of connector 10. Therefore, the connector and accessory of the lubrication device are configured such that an electrical path can only be established between the integrated circuit of the accessory and the processor of the connector when a proper mechanical connection is established between the accessory and the connector. As previously mentioned, the electrical path can also share a power source with connector 10 and accessory 1.

[0131] The first electrical contact 7 may include at least two separate electrical conductors 71 and 72, which are electrically insulated from each other, and the second electrical contact 8 may include at least two separate electrical conductors 81 and 82, which are electrically insulated from each other, such that when the accessory and connector are connected, at least two electrical conductors of the accessory form electrical connections with at least two electrical conductors of the connector accordingly. For example, at least one conductor of the accessory may be connected to at least one conductor of the connector to establish a signal path, and at least one conductor of the accessory may be connected to at least one conductor of the connector to establish a ground path. The at least two separate electrical conductors are operatively connected to the integrated circuit 2.

[0132] For example, the integrated circuit may be adapted to receive power via the first electrical contact 7, for example via at least two separate electrical conductors, such as one being a "positive" electrode and the other a "negative" electrode, even if the case of AC power is not excluded.

[0133] The integrated circuit 2 is adapted to transmit data, such as data reception and transmission, via a first electrical contact 7, for example via at least two independent electrical conductors (or one of them).

[0134] The body 3 of accessory 1 can typically include, for example, a conductive material, such as a metal, like steel, or stainless steel, as is known in the art. According to embodiments of the invention, the body 3 of accessory 1 can include two conductive components, such as metal components, electrically isolated from each other by a dielectric 73, i.e., an electrical insulator, such as a thermosetting polymer or vulcanized rubber. These two conductive components can thus form two separate electrical conductors 71, 72. While this may be a simple and inexpensive way to manufacture an accessory that provides two separate electrical contacts to form a communication (and often power) connection, those skilled in the art will appreciate that the dielectric is preferably selected from a material of sufficiently high quality to withstand friction and other forces arising from repeated clamping and releasing actions when the accessory, according to the embodiment, is connected to a lubricant at a lubrication point. The dielectric can also be selected to withstand (very) high temperatures, for example, those typically encountered in moving machine parts.

[0135] The first electrical conductor 71 may be located at or near the inlet end 6, while the first electrical conductor 72 may be located at or near the fixed end 5. The first electrical conductor 72 may be a grounding contact, i.e., connected to ground potential during operation. This first electrical conductor 72 may advantageously be electrically connected to a lubrication point, i.e., the machine body to be lubricated, during operation, for example, by means of a missing insulating dielectric between the first electrical conductor and the lubrication point. For example, the first electrical conductor 72 may be formed, for example, at least partially, by bolt 12.

[0136] This method ensures that components are properly grounded through the machine body's connection to the earth. By connecting this ground wire to components, such as manually operated grease guns, potentially dangerous or damaging voltage differences between the machine and connectors (e.g., the operator) can be avoided. It's important to note that manually operated grease guns are typically not grounded (i.e., have a floating ground wire), while industrial machines are typically grounded (i.e., have a non-floating ground wire). Therefore, sharing the grounding connection of industrial machines prevents connectors (e.g., the chassis of a grease gun) from being at a potential significantly different from that of the industrial machine and the earth, thus preventing electric shock to the operator upon contact.

[0137] Reference Figure 10 and Figure 11 The illustrative connector 10 shown may have a second electrical conductor 82 formed by clamping elements 111 that engage with the neck segment 26 of the accessory, and these clamping elements 111 may thus form part of an electrical path through the body 3 of the accessory 1, such as a ground contact (without limitation). These clamping elements 111 may be in electrical contact with a second support structure 116, which may be, for example, a conductive metal housing, to which the processor (and / or other associated components) may be connected. However, this configuration is merely illustrative, as many variations for conducting electrical signals from the body 3 of the accessory to the processor 120 are conceivable. In this example, the second support structure 116 may be surrounded by an electrically insulating shield 119 for protective purposes.

[0138] The second electrical conductor 81 may be formed of a metal element 118, such as a metal ring, for contacting the first electrical conductor 71 of the fitting 1 during use of the device. This metal element 118 is disposed on the flexible element 112, for example, between the flexible element 112 and a washer or sleeve 114. The washer or sleeve 114 may be adapted to electrically insulate the second electrical conductor 81, such as the metal element 118, from the second electrical conductor 82, such as the clamping member 111, while still allowing the metal element 118 to contact the fitting 1 during use, i.e., as a contact pad or contact element insulated from the body of the fitting. Therefore, the washer or sleeve 114 may be made of insulating material. The metal element 118 may make electrical contact with a sliding contact 121, such as a contact spring. This sliding contact 121 may be electrically insulated from the second electrical conductor 82 by an electrically insulating cover 119 and radially inward by a further electrically insulating housing 122. Figure 12 As shown, the flexible element 112 may include radial openings through which the sliding contact 121 can slide in contact with the metal element 118. Figure 13 A detailed description of the (illustrative) sliding contact 121 is provided. The processor 120 (and / or other related components) can be connected to the sliding contact 121. Again, it should be noted that this configuration is only illustrative, as many variations for conducting electrical signals from the first electrical conductor 71 of the fitting to the processor 120 are conceivable.

[0139] Returning to component 1, this also avoids dividing the main body of the component into two conductive parts, thus preventing adhesion problems between the two parts and the intermediate dielectric. Therefore, it is advantageous that the component can be easier to manufacture and more robust. For example, refer to... Figure 4 The integrated circuit 2 may be located in or on a retainer 24, which may be a protective and / or insulating retainer. The IC (integrated circuit) may be molded into a material, or the material may be cast into a cavity having a cavity for housing the IC. The retainer may be made of a castable or moldable material. The retainer may be made of a polymer. The retainer mates around the body 3 and is preferably made of a dielectric material for electrical insulation. Figure 4 In the example shown, the retainer 24 is shaped to fit into and / or be mounted on the bolt 12, conforming to the radial outer surface of the bolt, thus forming an extension of the bolt surface. The integrated circuit 2 can be connected to the first electrical contact 7, such as two, three, or more separate electrical conductors in the form of contact pads, which can be disposed in contact element 25 adapted to mate into and / or onto the protective retainer, for example, in a cavity for housing the integrated circuit 2. However, when the connector is operatively connected to the fitting, the first electrical contact 7 can be accessed by a complementary second electrical contact 8. Figure 5The illustration shows how the different components, namely the body 3, the protective retainer 24, and the contact element 25, are mated together in this illustrative embodiment of the accessory. All electrical contact elements (e.g., at least two electrical contacts) of the first electrical contact can be provided via the contact element 25, or alternatively, the retainer 24 can be provided with a through-hole through which an electrical conductor (e.g., formed as part of the contact element 25) can electrically connect the pins of the integrated circuit to the body 3, while at least one other contact is provided by the contact element such that at least one other contact is electrically isolated from the body 3.

[0140] In addition, such as Figure 5 As shown, the contact element 25 and the protective retainer 24 can be integral, for example, formed from a printed circuit board (PCB) having holes surrounding the fitting (neck). Integrated circuits (ICs) can also be integrated into or mounted on the PCB.

[0141] When a contact element (integrated in a PCB or as a separate element) provides multiple electrical conductors 71, 72, ... forming a first contact 7, the (closest) distance separating these electrical conductors can slightly exceed (e.g., by a margin in the range of 2% to 20%, preferably 5% to 15%, e.g., about 10%) the specifications of the corresponding electrical conductors forming a portion of a second contact of the connector. For example, in Figure 7 In the illustrative PCB shown, two electrical conductors are separated by a gap of approximately 2.4 mm, while a connector suitable for mechanical and electrical contact engagement with an accessory including the PCB component may include an electrical conductor with a width of approximately 2.2 mm. This reduces or avoids the risk of short circuits caused by the PCB conductors contacting the overlapping complementary second contacts of the connector.

[0142] The printed circuit board may include a first electrical contact 7, such as at least two separate electrical conductors 71, 72 that are electrically insulated from each other. For example, the integrated circuit may be adapted to receive power via the first electrical contact 7, for example, via at least two separate electrical conductors, such as one as a "positive" electrode and one as a "negative" electrode, even without excluding AC power. The integrated circuit may be adapted to (e.g., automatically detect and) switch polarity, for example, allowing an operator to connect the connector according to the embodiment to the accessory in any orientation (i.e., rotate it about the longitudinal axis of the tapered head of the accessory).

[0143] The outer diameter of the printed circuit board (PCB) can be approximately equal to the outer (maximum) diameter of the accessory body. For example, the accessory may include an M9 bolt, and the outer diameter of the PCB could be approximately 9 mm. Although the PCB is shown as circular, deviations from this shape are considered perfectly within the scope of this invention. Similarly, the PCB can have an inner diameter suitable for sliding over the head of the accessory, allowing it to be mounted to the body using suitable adhesives, etc. For example, the PCB can have an opening (hole) with a diameter of approximately 6.4 mm, for example, in the range of 5 mm to 7 mm (this, of course, depends on the type and specifications of the accessory). The PCB can have a conventional thickness, for example, in the range of 1 mm to 2 mm, but is not limited to this.

[0144] However, as Figure 8 As shown, PCBs can also have different shapes, for example, to house integrated circuit 2. Figure 8 In the example shown, the PCB provides space to house a fairly large IC at a distance from the longitudinal axis of the body 3. This distance also advantageously protects the integrated circuit from overheating. In this example, the printed circuit board connects one pin of the IC to the body of the accessory, forming a first conductor 71, and provides a separate second conductor 72 (i.e., insulated from the first conductor) to which the integrated circuit is also operatively connected.

[0145] The body 3 of the accessory can have a shape generally known in the art, but the height of the body can extend in the neck section 26, i.e., in the longitudinal section immediately adjacent to the bolt 12 in the direction toward the inlet 6, thereby providing additional height for the PCB or contact element in another form. An advantage is that the accessory can therefore be compatible with conventional grease guns. However, the embodiments are not limited thereto. As will be apparent to those skilled in the art, for example, the design parameters of the elastic elements within the body may also need to be tuned to account for slight variations in the length of the body.

[0146] However, in other embodiments of the invention, the body 3 of the accessory may have a different shape than prior art accessories, such as different sizes, shapes, or specification ratios. This can have the advantage of preventing compatibility with prior art grease guns, for example, for commercial reasons or to ensure that each lubrication action can be recorded using the accessory and the connector according to an embodiment of the invention. Furthermore, in environments using different lubricants, it can be advantageous to change the shape, size, specification, or proportion of the accessory and the corresponding connector, such that the mechanical and electrical connection of the accessory can only be established with a connector attached to a grease gun specifically dispensed with the correct type of lubricant. For example, the outer diameter of the accessory and / or the length of the neck segment 26 can vary between different embodiments to ensure that the accessory can only be connected with a connector having a matching specification. As described above, failed attempts to connect the accessory can be recorded, for example, when an abnormally short electrical contact occurs or no lubricant is injected, allowing action to be taken to prevent such errors from occurring in the future and / or to ensure that such errors are not related to other errors.

[0147] Furthermore, the first electrical contact, such as its contact pad, may include a protective coating to protect the contact from wear due to repeated contact establishment during lubrication operations. As another measure to reduce undesirable wear effects, the contact element, such as the PCB, may have protrusions 91 or other embossed textures on its contact side, i.e., the side facing the inlet 6 when mounted on the fitting 1 as intended. Therefore, these protrusions or embossed features will preferentially erode under the action of friction and contact forces, initially reducing most of the wear and tear on the contact element. The protrusions or other embossed textures may form part of the first electrical contact, i.e., such that an electrical connection can be (at least partially) established through the raised surface features. The first electrical contact may also include a portion coplanar with the main surface where the protrusions or other embossed features are provided, i.e., such that the same or several electrical connections are formed when these surface features are ground.

[0148] Another advantage of this surface texture feature is that the electrical contacts are less susceptible to damage from particulate matter, such as sand, trapped between the contact element and the corresponding contact element of the connector. For example, the protrusion or surface feature can extend to a height of at least 250 μm, preferably at least 500 μm, to reduce the impact of trapped sand particles of medium size (e.g., on the Wentworth scale).

[0149] Return to Figure 14 Figure 16The illustrated connector 10 may include at least one electrical contact element 151 supported by a sliding cover 205. The at least one electrical contact element 151 may include one or more separate, insulated contacts, such as contact springs. For an accessory 1 including contact element 25, at least one electrical contact element 151, optionally integrated into a PCB, may engage with a first electrical contact 7, such as two, three, or more separate electrical conductors, in the form of a contact pad of the first electrical contact 7, for example, by touching. An insulating element 153, such as a housing, may electrically isolate the at least one electrical contact element 151 from the mechanical connection component 152.

[0150] Although Figure 15 and Figure 16 Two separate electrical contact elements 151 are shown, but it should be clear that this is merely an example, and those skilled in the art can consider many variations of the concepts presented herein without creative effort. For example, refer to Figure 17 (and Figure 18 A single electrical contact element, such as a contact ring, can be adapted to contact the fitting. For example, such as Figure 8 or Figure 9 The contact element 25 shown, such as a PCB, may have an electrical conductor 72 (e.g., a single, ring-shaped conductor) provided on its surface, which can be contacted by such a contact ring of the connector 10 when the connector is coupled to the accessory. Another electrical conductor 71 of the accessory can be connected via a core 202 and / or a base 203. Figure 17 In the example shown, the electrical contact element, such as the contact ring, does not extend to a substantial portion of the sliding cover 205, for example, substantially abutting against the end face of the connector where it is fixed to the sliding cover 205, making it possible that no further insulating elements 153 are needed. Figure 20 The contact 221 between the contact ring of connector 10 and the annular electrical conductor 72 of accessory 1 is shown.

[0151] In a third aspect, the present invention relates to a printed circuit board element for attachment to an accessory for a lubrication point, i.e., an accessory known in the art, to jointly form an accessory according to an embodiment of the first aspect of the invention. For example, the printed circuit board element may include a printed circuit board 60, such as that described above. The printed circuit board 60 may have openings, such as holes, therein through which accessories known in the art, such as grease nipples, may mate. The PCB may include the integrated circuit 2 described above. The PCB may include a first contact 7, or a portion of a first contact 7, wherein the remainder of the first contact is formed during mounting by a conductive contact between the PCB and the body of the accessory. (Refer to...) Figure 7The outer diameter of the PCB can be between 7mm and 20mm, for example, between 7mm and 12mm, such as 9mm. The printed circuit board can be circular, or can have a shape that can be surrounded by a circle (closest to the mating) of the outer diameter. The PCB can have holes formed therein, i.e., through holes. The holes can have a diameter (i.e., the inner diameter of the PCB) in the range of 4mm to 10mm, for example, in the range of 5mm to 7mm, such as 6mm to 7mm, such as 6.4mm. The PCB can operatively mount the integrated circuit 2 thereon, or the integrated circuit 2 can be integrated into the PCB (i.e., can form part of the PCB). The PCB may include at least a first pin for connecting the integrated circuit to the first electrical conductor 71, for example, when mounted on a suitable fitting body. The PCB may include at least a second pin for connecting the integrated circuit to the first electrical conductor 72, isolated from the first electrical conductor 71, for example, when mounted on a suitable fitting body. The PCB may include the first electrical conductor and / or the second electrical conductor. The first electrical conductor and / or the second electrical conductor may include contact pads on the PCB. For example, as Figure 7 As shown, the first and second electrical conductors can be formed from contact pads, which are substantially circular in shape (distributed around the hole). For example, one of the electrical conductors can be formed from a contact pad, which is substantially circular in shape around the hole, such as an annular electrical conductor. Figure 8 and Figure 9 As shown. Another electrical conductor may be formed from the body of the accessory, and when the PCB is mounted thereon, for example, via conductive traces on the back side of the PCB (opposite to the front side where the other electrical conductor is located) and / or on the inner edge of the hole.

[0152] Reference Figure 22 The invention also relates in a fourth aspect to a lubrication device 231, such as a grease gun, which includes a connector 10 according to an embodiment of the second aspect of the invention. Please note that... Figure 21 The different components of the grease gun and the connectors are shown in exploded view.

[0153] Reference Figure 21 It should be noted that although the device is described as a grease gun, this does not preclude one or more components that are not necessarily handheld; for example, components integrated into a backpack. For instance, electronic components, batteries, and / or a reservoir for holding the lubricant to be dispensed may be integrated into the backpack, which may be operatively connected to the handheld component via flexible fluid conduits and / or conductive wires, etc.

[0154] The invention relates in a fifth aspect to a lubricant dispenser system, including, for example, at least one grease gun 231 according to an embodiment of a fourth aspect of the invention and one or more accessories 1 according to an embodiment of a first aspect of the invention, such as grease nozzles.

[0155] The invention relates, in a sixth aspect, to a method for maintaining a lubrication point of a device to be lubricated; wherein a fitting 1 is fastened to the lubrication point. The method includes obtaining a lubrication device 231 to provide lubricant to the lubrication point, wherein the lubrication device includes a connector 10. The method includes removably connecting the connector 10 to the fitting 1 such that a fluid conduit is formed between the interior of the device to be lubricated at the lubrication point and the lubricant container of the lubrication device, and such that an electrical path is formed between an integrated circuit 2 of the fitting 1 and a processor 120 of the connector 10 via a first electrical contact 7 of the fitting and a second electrical contact 8 of the connector 10. The method further includes sending an identification code from the integrated circuit 2 via the circuit radial processor 120 to identify the fitting.

[0156] In view of the description provided herein relating to the apparatus according to embodiments of the present invention, other features of the method according to embodiments of the present invention, or details of the features described above, should be clear, or vice versa.

Claims

1. A connector (10) adapted to be removably connected to an accessory (1) for a lubrication point of a device to be lubricated, the accessory being adapted to be removably connected to the connector (10) to receive lubricant from the connector, the accessory comprising: - A body (3) and a fluid conduit (4) are formed in the body, the fluid conduit being used to guide the lubricant into the lubrication point when lubricant is received from the connector (10) via the inlet (6) of the fluid conduit. - Integrated circuit (2), said integrated circuit being adapted to provide an identification code to identify the integrated circuit (2) of the accessory, and - First electrical contact (7), when a connection is established between the accessory (1) and the connector (10), the first electrical contact is used to establish an electrical path between the integrated circuit (2) and the processor (120) of the connector (10). The main body includes a fixed end (5) suitable for fastening the accessory to the lubrication point or to the lubrication point. Wherein, the integrated circuit (2) is adapted to transmit data to the processor (120) via the first electrical contact (7) when a connection is established between the accessory and the connector, the data including the identification code. The connector includes: - Processor (120), the processor being configured to receive an identification code from the integrated circuit (2) when connected to the accessory (1), and - A second electrical contact (8), which is used to establish an electrical path between the integrated circuit (2) and the processor (120) of the accessory (1) via the first electrical contact (7) of the accessory (1) when a connection is established between the accessory (1) and the connector (10). The processor (120) includes an electronic memory for storing the received identification code, or storing the identification of the accessory based on the received identification code. The processor (120) is adapted to store failed connection attempts in the electronic memory.

2. The connector according to claim 1, characterized in that, The identification code is stored together with a timestamp to indicate when the accessory is mechanically and electrically connected to the connector and / or together with further data received from sensors in the accessory or the connector.

3. The connector according to claim 1, characterized in that, The failed connection attempts are stored along with a timestamp to indicate when the failed connection attempts occurred.

4. The connector according to claim 1, characterized in that, Includes a communication module (130) for sending information to a server, and / or a display (140) for displaying information to a user, and / or an alarm generator (181) for issuing an alarm to a user in response to the information. The information includes data determined by the processor (120) based on the identification of the accessory (1).

5. The connector according to any one of claims 1 to 4, characterized in that, Includes a metering device (150) for automatically dispensing a certain amount of lubricant into the fitting, wherein the certain amount of lubricant is determined by the processor (120) taking into account the identification of the fitting (1), and / or wherein the metering device (150) is adapted to measure the amount of lubricant manually released into the fitting by an operator and provide the measured amount to the processor (120).

6. A fitting (1) for a lubrication point of a device to be lubricated, the fitting being adapted to be removably connected to a connector (10) according to any one of claims 1 to 5 to receive lubricant from the connector, the fitting comprising: - A body (3) and a fluid conduit (4) are formed in the body, the fluid conduit being used to guide the lubricant into the lubrication point when lubricant is received from the connector (10) via the inlet (6) of the fluid conduit. - Integrated circuit (2), said integrated circuit being adapted to provide an identification code to identify the integrated circuit (2) of the accessory, and - First electrical contact (7), when a connection is established between the accessory (1) and the connector (10), the first electrical contact is used to establish an electrical path between the integrated circuit (2) and the processor (120) of the connector (10). The main body includes a fixed end (5) suitable for fastening the accessory to the lubrication point or to the lubrication point. The integrated circuit (2) is adapted to transmit data to the processor (120) via the first electrical contact (7) when a connection is established between the accessory and the connector, the data including the identification code.

7. The accessory according to claim 6, characterized in that, The integrated circuit (2) includes an electronic memory for storing the identification code.

8. The accessory according to claim 7, characterized in that, The integrated circuit (2) is adapted to generate the identification code in response to challenge information received from the processor (120) via the first electrical contact (7) when a connection is established between the accessory (1) and the connector (10), wherein the generated identification code depends on the received challenge information, and wherein the identification code, in combination with the challenge information, allows the accessory to be uniquely identified by the processor (120).

9. The accessory according to claim 6, characterized in that, The electrical path is established so that the power supply of the connector (10) can be used for the integrated circuit (2) via the electrical path.

10. The accessory according to claim 6, characterized in that, The first electrical contact (7) includes at least two separate first electrical conductors (71, 72) for establishing the electrical path by contacting at least two separate second electrical conductors (81, 82) respectively connected to the connector (10), each of the at least two separate first electrical conductors (71, 72) of the accessory being operatively connected to the integrated circuit (2).

11. The accessory according to claim 10, characterized in that, At least a portion of the body (3) is made of conductive material and forms one of the at least two separate first electrical conductors (71, 72) of the accessory.

12. The accessory according to claim 10 or claim 11, characterized in that, Includes a contact element (25) that mates around a neck segment (26) of the body (3), wherein at least one of the at least two separate first electrical conductors is included in the contact element (25).

13. The accessory according to claim 12, characterized in that, The circuit includes a printed circuit board (60), the contact element (25) is included in the printed circuit board, and the integrated circuit (2) is integrated in the printed circuit board or mounted on the printed circuit board.

14. The accessory according to claim 6, characterized in that, The integrated circuit (2) includes a sensor for determining the characteristics of a lubricant in the accessory or in and / or on the device to be lubricated when the accessory is installed in or on the lubrication point, and wherein the integrated circuit (2) is adapted to transmit the determined characteristics to the processor (120) of the connector (10) when a connection is established between the accessory (1) and the connector (10).

15. A printed circuit board device comprising a printed circuit board (60) adapted to be attached to an accessory, the accessory being mounted or adapted to be mounted in or on a lubrication point of a device to be lubricated, such that the printed circuit board device, when mounted on or in the accessory, forms the accessory according to any one of claims 6 to 14.

16. A lubrication device (231) comprising a connector (10) according to any one of claims 1 to 5, the connector being operatively attached to or integrated into the lubrication device.

17. A lubricant dispenser system comprising at least one lubrication device (231) according to claim 16 and at least one accessory (1) according to any one of claims 6 to 14.

18. The lubricant dispenser system according to claim 17, characterized in that, The connector of the lubrication device (231) and the accessory (1) are configured to establish the electrical path between the integrated circuit (2) of the accessory (1) and the processor (120) of the connector (10) only when a proper mechanical connection is established between the accessory (1) and the connector (10).

19. The lubricant dispenser system according to claim 18, characterized in that, The connector and the fitting (1) of the lubrication device (231) are configured to allow the data to be transmitted to the processor (120) only when a proper mechanical connection is established between the fitting (1) and the connector (10).

20. The lubricant dispenser system according to claim 17, characterized in that, The lubrication device (231) is configured to dispense lubricant into the fitting only when the identification code matches a predetermined standard.

21. The lubricant dispenser system according to claim 17, characterized in that, The connector of the lubrication device (231) is configured such that proper engagement causes a portion of the fitting to engage with the internal portion of the connector, thereby opening a flow path for the lubricant and disengaging it to close the flow path.

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