Golf practice apparatuses and systems

Abstract

A golf practice apparatus comprises a support structure comprising two or more panels 10a-d flexibly connected together so as to define a playing area 20; a putting layer 50 provided over the playing area of the support structure, wherein the putting layer defines a playing surface 51; and one or more inflatable chambers (36a-1 to 36d-1 & 36a-2 to 36d-2, figure 1C) located on a side of the support structure opposing the playing surface. The profile of the playing surface may be changed through inflation and deflation of the inflatable chambers. The inflatable chambers may be inflated using pumps 30a-1 to 30d-1 & 30a-2 to 30d-2.

Description

FIELD OF THE INVENTION The present invention relates to putting apparatuses and systems. In particular, the present invention relates to improvements in or relating to golf practice apparatuses and systems to aid a player of golf in improving their putting skill. BACKGROUND Various known putting aids, such as putting mats, enable a golfer to practise putting away from the golf course. Some putting aids comprise features to further assist a player in improving their putting skill. For example, known putting aids may comprise slopes in the playing surface to incorporate an element of difficulty when putting. Furthermore, some putting aids known in the art comprise an adjustable playing surface. A player may be able to adjust properties of the playing surface of these devices, for example the slope, to incorporate a variable element of difficultly, or to practise particular putts. Some putting aids known in the art provide a variable slope by implementing a complex network of mechanical actuators that precisely adjust the profile of the playing surface. However, such approaches are difficult and expensive to manufacture due to their complexity. They are also difficult to operate and they often require control by a computer, further increasing the cost and complexity. Less complex adjustable putting aids are known in the art. However, a common issue present with such devices is that simplified mechanisms for adjusting properties of the playing surfaces of these aids can create localised, steep, mounds, or “molehills”, in these playing surfaces. This is undesirable as an unrealistic playing surface is created, compared to that of a putting green on a golf course. There is therefore a need for improvements in or relating to adjustable putting aids. SUMMARY OF INVENTION In an aspect of the present invention there is provided a golf practice apparatus, comprising: a support structure comprising two or more panels flexibly connected together so as to define a playing area (e.g. in use); a putting layer provided over the playing area of the support structure (e.g. in use), wherein the putting layer defines a playing surface; and one or more inflatable chambers located on a side of the support structure opposing the playing surface, whereby the profile of the playing surface may be changed through inflation and deflation of the inflatable chambers. The inflatable chamber(s) are located on a side of the support structure opposing the playing surface. Therefore, when making adjustments to the inflatable chamber(s), changes to the profile (e.g. slope or contour) of the playing surface are relatively gradual as the changes are spread across the lateral area of the panels, in contrast to localised steep mounds, or “molehills”, being created which would be the case if the inflatable chambers were positioned between the panels and the putting layer. The profile of the putting surface may be described with respect to the floor or other surface on which the apparatus is positioned. In this way, the putting apparatus advantageously enables adjustment of slope and undulation in a realistic manner that is similar to the profile of a putting green on a golf course. The putting layer also smooths out any lips or steps between adjacent panels, generating a realistic playing surface. The putting layer provided (e.g. positioned) over the playing area defines a playing surface of the putting apparatus. In other words, in use, a golf ball is hit so as to roll across the playing surface. The putting layer is typically provided so as to substantially completely cover the playing area. The putting layer may comprise a single layer of material or multiple layers (e.g. sub-layers) of material. The putting layer may comprise nylon, felt, astroturf, or another suitable material for providing a realistic putting surface. Preferably, the putting layer comprises a nylon layer on a thermoplastic rubber layer. The putting layer is generally flexible so as to conform to the profile of the support. In this way as described above, the profile of the playing surface may be adjusted through operation of the one or more slope adjusters to generate realistic undulations. The putting layer is typically in the form of a putting mat. The putting layer may be configured to be provided over the playing area of the support structure in use. The panels of the support are flexibly connected together (e.g. flexibly coupled together) so as to define a playing area. The putting layer is typically positioned so as to substantially completely cover the playing area. The playing area defined by the panels is the area of the support defined by the tops of the panels in use. In other words, the playing area has a greater lateral area than the lateral area defined by a single panel. The panels may typically be (e.g. laterally) connected together end to end in a longitudinal direction so as to define an elongate playing area. The inflatable chambers are disposed underneath the panels, opposite the playing surface, in use. In other words, the support structure has a first side defining the playing area, and an opposing second side on which the inflatable chambers are located. Therefore, when an inflatable chamber is inflated, its corresponding panel will be tilted such that its slope is changed. This consequently changes the slope of the playing area - and therefore the playing surface - as the change in slope is “spread across” the lateral area of the panel. As the panels are flexibly connected (e.g. flexibly coupled), the panel(s) adjacent the actively tilted panel may tilt to a different extent from the actively tilted panel, enabling realistic multi-plane undulation across the playing surface to be created. In contrast to known putting aids that implement a complex network of actuators that precisely adjust the profile of the playing surface in numerous individual locations, by adjusting the slope of a plurality of panels, the present invention achieves a realistic undulation across the playing surface using a relatively limited number of points of adjustment, as well as avoiding the problem of unrealistic “molehill” slopes being generated. The two or more panels are flexibly connected together. In other words, the panels are not rigidly connected. In this way, the panels may be articulated at least partially independently of each other. The panels may be flexibly connected or coupled together via one or more hinges or other suitable connectors for creating a flexible connection, for example elastic or webbing. In embodiments, the panels may be described as being connected by joints. An advantage associated with the inclusion of two or more panels flexibly connected together is that a playing surface of a variable profile can be created by a user. For example, the playing surface may be adjusted to comprise an “uphill” section and a “flat” section. In contrast, if only one panel were present in the support structure, or if the panels were rigidly connected, then a playing surface would merely comprise a profile of one constant slope, which is not typically characteristic of a putting green. However, it is noted that the inflatable chamber(s) of the present invention may be controlled to provide a constant slope across the support structure, if desired. In preferred embodiments, the two or more panels comprise first and second panels that are flexibly connected together such that a slope of the first panel is partially dependent on a slope of the second panel. In this way, when a first panel is tilted by actuation of an inflatable chamber, the panel(s) connected to the tilted panel may also partially tilt, advantageously minimising localised ridges or steps between adjacent panels. In this way, the slope of a second panel is partially dependent on the slope of a connected first panel. Preferably, the panels are flexibly connected together with one or more tension connectors, each of the one or more tension connectors comprising a tension member. In this way, the tension member generates a restoring force acting against completely independent articulation of the panels, such that the slopes of panels connected using tension connector(s) are partially dependent on each other. The restoring force typically urges the connected panels towards a position in which they define a planar surface. The use of tension connectors to provide a partial dependency of the slopes of connected panels advantageously means that the realistic variations in the contours of the playing surface may be generated using relatively few inflatable chambers. Advantageously, when adjusting the profile of the playing surface, the tension is located in the support structure (e.g. the tension members of the tension connectors are under tension). This means that there is no need to adjust the tension in the putting layer (e.g. putting mat), as the putting layer is fully supported by the support structure. The strength of the tension member (e.g. the strength of the restoring force) can be selected based on the number of panels present and the extent to which the slopes of connected panels are desired to be dependent. Typically, the tension members are configured to create a restoring force that is greater than the weight of a panel. A preferred example of a tension connector is a tension hinge. Therefore, in preferred embodiments, the panels are flexibly connected together via one or more tension hinges, preferably wherein each of the one of more tension hinges comprises one or more tension members configured to create a restoring force that urges the tension hinge towards an open position. In such embodiments, the panels may be described as being hingedly connected. The tension hinge is in an open position when two connected panels define a substantially planar surface. Typically, the hinges do not open through angles substantially greater than 180 degrees. When a first panel is tilted, the tension hinge coupling the first panel to an (directly) adjacent second panel starts to close. The restoring force overcomes the weight of the second panel, therefore causing the second panel to tilt. The tension provided by the one or more tension members is selected such that the second panel is tilted to a lesser degree than the first panel, but not such that the adjacent panel remains untilted when the first panel is tilted. Preferably, the tension members of the tension hinges (or other tension connectors) comprise elasticated cord (“bungee cord”) or springs to provide the tension required. By inflating an inflatable chamber of one of the panels the hinge is partially closed. The greater the inflation of the chamber of the first panel the greater the closure of the hinge. In embodiments comprising more than two panels, the orientation of the tension hinges connecting different pairs of panels may vary. For example, one hinge (or set of hinges) connecting a first pair or panels may close in one direction, whilst another hinge (or set of hinges) connecting a second pair of hinges may close in the opposing direction. Such arrangements may be advantageously used to control the degree and manner of articulation of the playing surface. In various embodiments, the direction in which hinges or sets of hinges close in may alternate for respective pairs of panels. Furthermore, this may enable the panels to be readily folded to store the apparatus compactly. For example, the sets of hinges connecting the end panels may close in one direction, whilst the sets of hinges connecting the panels in the middle of the support structure may close in the opposite direction to enable “concertina” folding. The tension hinges may permit the panels to be folded to store the apparatus without requiring dismantling of the putting apparatus. Although not essential, preferably, the panels are substantially rectangular in shape (and may be substantially square). This geometry enables a substantially continuous playing area to be created across multiple panels. The panels typically have approximate lateral dimensions (e.g. a length and a width) of between 30cm and 90cm. The thickness of the panels may be between 3cm and 10cm. Typically, the support structure may define a playing area having a length of between 120cm (~4ft) and 360cm (~12ft) in use. These dimensions advantageously provide a length long enough to provide challenging putts within a compact space. To enable the apparatus to remain as compact as possible, preferably, the playing area is elongate in use (e.g. having a width of between 30cm and 90cm). Preferably, the lengths of the panels (e.g. along a preferred playing direction) do not significantly exceed their widths. This helps to provide realistic contours across the playing surface. For example, in contrast, panels of a narrow shape along their length would create a series of long, flat planes when their respective slopes are adjusted. This particular scenario would not be a realistic undulating profile in the playing surface. The (e.g. elongate) playing surface has a first end and a second end. The direction from the second end to the first end may define a preferred playing direction. The first end and second end of the playing surface correspond to a first end and a second end of the support structure. As described above, the apparatus comprises one or more inflatable chambers. Preferably, the one or more inflatable chambers are connected to the support structure. A single inflatable chamber can be used to create challenging profiles to practise putting. Preferably, however, the apparatus comprises a plurality of inflatable chambers configured to enable tilting of the support structure along two non-parallel directions. For example, the plurality of inflatable chambers may enable both “left-right” and “up-down” tilting with respect to a playing direction. This advantageously provides increased control in the adjustment of the support and enables a user to create complex slope profiles in the playing surface. In various embodiments, a single adjustable chamber may be used to enable tilting of the support structure along two non-parallel directions. In such embodiments, the lateral position of the single inflatable chamber may be adjustable relative to the apparatus. Typically, each inflatable chamber is in communication with (e.g. connected to) to a corresponding panel. Thus, at least one of the panels is in communication with an inflatable chamber. In preferred embodiments, each of the two or more panels is in communication with (e.g. connected to) at least one slope adjuster. In this way, the slope of each panel can be changed to produce increased control of the undulation across the playing surface. Typically, one or more of the panels (and in some embodiments, each panel) is in communication with two or more inflatable chambers. By having two (or more) inflatable chambers correspond to a panel, the pitch and the roll of the panels can be adjusted by inflating or deflating each of the two chambers to various extents in various combinations. Providing each panel with one or more inflatable chambers provides stability to the apparatus when in use as it is less likely to bounce or become displaced. It also enables the creation of complex slope profiles, such as those which include a downward and leftward slope portion, and an upward and rightward slope portion. However, it is not essential that a particular panel forming the support structure has a corresponding inflatable chamber. Panels not in communication with an inflatable chamber may be referred to as “passive” panels herein. Passive panels may still have their slope adjusted through tilting of a neighbouring panel particularly in embodiments in which tension connectors are used. Preferably, the lateral area of each of the panels is at least twice as large, preferably at least four times as large, as the lateral area of a corresponding inflatable chamber. In other terms, an area defined by an upper surface of a panel is at least twice as large as an area extending across an upper surface of a corresponding (individual) inflatable chamber. Where there are multiple inflatable chambers associated with a single panel, their aggregate lateral area may be more than half the size of the lateral area of the corresponding panel. Preferably, an inflatable chamber is offset from the centre of its corresponding panel to cause the panel to tilt when the inflatable chamber is actuated. However, it is envisaged that in some embodiments the inflatable chambers may be shaped or otherwise interfaced with the corresponding panel so as to cause the tilting of a panel even if it is positioned in the centre of the panel. In this way, when an inflatable chamber is inflated, it causes its corresponding panel to tilt, as opposed to merely being raised upward. In contrast, if the lateral area of the inflatable chambers were similar to that of the panels, then when inflated and deflated the inflatable chambers would only raise and lower the panels. As the lateral area of an inflatable chamber is less than half of that of a panel, an end or side of the panel is raised when the chamber is inflated, causing a change in the slope of the panel. Preferably, the support structure comprises three or more panels flexibly connected together. Preferably the panels are arranged in an elongate manner (e.g. end to end). Increasing the number of panels advantageously increases the various different ways in which the panels can be articulated to create complex varying profiles for putting practice. Typically, the support structure comprises no more than 10 panels, preferably no more than 6 panels. A preferred number of panels is 4. In this way, each individual panel is relatively large in comparison to the total area of the support in use, creating a relatively gradual and realistic contour in the profile of the playing surface. Preferably, each panel is connected to its adjacent panel(s) via a tension connector such as a tension hinge, discussed above. One complex slope profile that may be produced comprises a downward and leftward sloped portion, a flat portion, and then an upwards and rightward sloped portion. Another complex slope profile that may be produced comprises an upwards and rightward sloped portion, a flat portion and then a downward and leftward sloped portion. Another complex slope profile that may be produced comprises a leftward sloped portion, a rightward sloped portion, and then a upward sloped portion. Other complex slope profiles may be generated through appropriate inflation and deflation of the inflatable chambers, as would be understood to the skilled reader. In various embodiments, each of the inflatable chamber(s) is configured to have a first inflation position in which it is fully located within a cavity of the corresponding panel and a second inflation position in which it protrudes from the cavity. In other terms, the inflatable chamber(s) are contained substantially completely within cavities located in the panels when fully deflated and are configured to protrude from the cavities when partially or fully inflated. Preferably, one inflatable chamber corresponds to each cavity. The inflatable chambers may be removably contained within the cavities and may be contained within the cavities by, for example, an interference fit, a locking mechanism or a screw fixing In this way, when the inflatable chambers are fully deflated, the panels lie flat as the inflatable chamber(s) are fully contained within the corresponding cavities. When the inflatable chamber(s) are inflated, they begin to protrude from the cavities and push the panels upward against the floor or surface on which the apparatus is positioned, causing them to tilt. This configuration also has advantage in that when not in use, the support structure can be stored more compactly with the deflated inflatable chambers contained completely within the cavities. In various embodiments, at least one of the inflatable chamber(s) is provided substantially at a side edge of the corresponding panel or is configured to be positioned at a side edge of the corresponding panel in use. In various embodiments, the inflatable chambers may be provided in different relative positions for different panels. The side edges of the panels are preferably the edges that are provided substantially perpendicular to the direction in which the panels are connected (e.g. substantially perpendicular to the playing direction). In this way, actuating an inflatable chamber located at a side edge of the corresponding panel causes its corresponding panel to tilt to the left or to the right, from the perspective of the playing direction. Typically, the support will comprise slope adjusters having inflatable chambers located at opposing side edges in order to enable creation of both “left” and “right” tilting. In various embodiments, the inflatable chamber(s) of the panel at a first end of the support structure are provided proximal to the first end of the support structure. In this way, the panel at the first end of the support structure can, for example, be more greatly titled relative to its adjacent panel to create an upwardly sloping profile, when viewed along the playing direction. In various embodiments, the inflatable chamber(s) of the panel at a second end of the support structure are provided proximal to the second end of the support structure, wherein the first end is opposite the second end. In this way, the panel at the second end of the support structure can, for example, be more greatly titled relative to its adjacent panel to create a downwardly sloping profile in the playing surface of a putting layer, when viewed along the playing direction. By arranging the inflatable chambers in this manner, the lever effect on the couplings (e.g. tension hinges, where used) of the end panels is increased, meaning that the slope of the end panel is greater relative to the slope of the adjacent panel. Arranging the inflatable chambers in this manner also enhances the stability of the platform. In various embodiments, the putting apparatus further comprises one or more cups configured to receive a golf ball, preferably wherein the one or more cups are provided at a first end of the support structure. The putting layer placed on the playing area comprises a hole corresponding to the opening of the cup(s). In some embodiments, the cup(s) may be a constituent part of, or may comprise, an automatic ball returner configured to automatically return the golf ball to the user. Although the use of a ball returner may provide an enhanced experience for a user, this is not essential, and a cup may be provided without ball return means. In some embodiments, the support may be provided without a cup, and the resulting putting apparatus may be used by practising putts aiming towards a target positioned, printed, or otherwise marked on the putting layer. In various embodiments, each inflatable chamber is in fluid communication with an actuator configured to inflate the inflatable chamber. Preferably, the actuator comprises (or is) a pump. The actuator may be manually operated or automated. In this way, the inflatable chambers can be variably inflated, by a player or otherwise, to precisely adjust the profile of the playing surface. The pumps may be configured to be operated by a player stepping on the pump with their foot, for example. The inflatable chamber(s) are preferably inflated using air (or other suitable gas), but it is envisaged that they may be inflated using a suitable liquid (such as water). In various embodiments, each inflatable chamber is in fluid communication with an actuatable valve that, when actuated, causes the inflatable chamber to deflate. In this way, the inflatable chambers can be variably deflated to precisely adjust the profile of the playing surface. Herein, the combination of an inflatable chamber and the corresponding actuator and valve may be referred to as a “slope adjuster”. Preferably, the actuators and / or the actuatable valves are provided exterior to the panels in use. In this way, the chambers can easily be inflated and deflated by a player when using the apparatus. Advantageously, adjustment to the profile of the apparatus can be performed by a user in a standing or seated position, without the requirement for a user to access the slope adjusters at ground level. This ensures that use of the apparatus is easily accessible. Preferably, each of the panels comprises a recess configured to receive and house the actuator and the actuatable valve. In this way, when not in use when stored, the apparatus can be stored more compactly as the actuators and the actuatable valves are provided within the panels. The use of one or more inflatable chambers to cause the changes in profile of the putting surface is advantageous for a plurality of reasons in addition to their ease of use. They are light weight in comparison to more complex mechanisms, meaning that the apparatus may be stowed and deployed more easily. They are also generally robust and unlikely to be damaged if the support structure is stood on. Additionally, the inflatable chambers dynamically spread out any compression force over a large surface area. Consequently, not only are the inflatable chambers less likely to be damaged if the support structure is stood on, the panels themselves are also less likely to suffer damage. In various embodiments, the support structure comprises a first configuration in which the panels are folded, and a second configuration in which the panels are unfolded (or “deployed”) and define the playing area. In this way, the apparatus can be compactly stored when not in use. In various embodiments, the panels are semi-rigid panels. In other words, the panels are substantially stiff but not completely inflexible. In this way, the individual panels tilt, rather than significantly bend, when the slope adjusters are actuated. In other words, the panels do not significantly flex under their own weight. Although the apparatus is typically not intended to be stood on in use, the panels preferably have sufficient flexibility to not break if accidentally stood upon. Preferably, the panels comprise, or are formed of, one or more open or closed cell plastic foams. These materials are preferred as they are stiff and also lightweight, readily enabling transportation and storage of the putting apparatus when not in use. A preferred material for the panels is expanded polypropylene, EPP. Other suitable materials for the panels may include expanded polystyrene, wood, aluminium, aluminium honeycomb board, or inflatable PVC. In some embodiments, the apparatus may further comprise a retractable bumper positioned at least partially around the edges of the support structure. The retractable bumper is moveable between a retracted position, in which it sits flush with the upper surface of the panels, and a deployed position in which it sits proud of the upper surface of the panels. In the deployed position, the bumper advantageously prevents golf balls from rolling over the edge of the support. When in the retracted position, this advantageously enables the panels to be folded for storage. The putting layer is typically attached to (e.g. configured to be attached to) the playing area of the support structure. Preferably, the putting layer is removably attachable to the support. The putting layer be removably attachable via fastening means such as flat headed bolts or screws, Velcro® or carpet clips. Thus, the putting layer may be replaced with one having different roll characteristics (e.g. to simulate different stimp readings), or to replace one that is worn out. The fastening means may be configured to allow the position of the layer to be adjusted once the layer is placed on the playing area of the support. The layer may comprise eyelets that can be fastened to the removable fastening means. Preferably, the putting layer is not under tension, and is fixed to the support structure to hold it in position. The putting layer and further components of the apparatus (e.g. the support structure and inflatable chambers) may be provided as a kit of parts. The putting layer may typically be provided as a separate component from the remainder of the apparatus. Thus, the present invention also provides a kit of parts comprising a support structure, one or more inflatable chambers, and a putting layer that may be assembled to form the golf practice apparatus of any of the preceding claims. The one or more inflatable chambers and the support structure may together form an adjustable support device. Thus, the kit of parts may comprise the adjustable support device and the putting layer (e.g. as separate parts) that may be assembled together to form the golf practice device. In another aspect of the present invention there is provided a golf practice system, comprising: a golf practice apparatus as described above; and a playing podium having an elevated standing surface, whereby a user may stand on the standing surface to perform putts on the golf practice apparatus. Thus, the standing podium may be positioned adjacent to the apparatus in order that the standing surface substantially matches the height and / or slope of the playing surface. The playing podium may have a fixed height (e.g. approximately equal to the mean height of the apparatus across the available tilt positions), or may be adjustable in height and / or slope. The golf practice apparatus and the playing podium may be provided as a kit of parts. Further disclosed herein is an adjustable support device for a golf practice apparatus, comprising: a support structure comprising two or more panels flexibly connected together so as to define a playing area configured to receive a putting layer; and one or more inflatable chambers located on a side of the support structure opposing the playing area, whereby the profile of the playing area may be changed through inflation and deflation of the inflatable chambers. Thus, the adjustable support device provides equivalent advantages to the golf practice apparatus described above. A golf practice apparatus may comprise such an adjustable support device and a putting layer, such as a putting mat, provided over the playing area. In some embodiments, the two or more panels comprise first and second panels that are flexibly connected together such that a slope of the first panel is partially dependent on a slope of the second panel. In some embodiments, the panels are flexibly connected together with one or more tension couplings, each of the one or more tension connectors comprising a tension member. In some embodiments, the panels are flexibly connected together via one or more tension hinges, preferably wherein each of the one or more tension hinges comprises one or more tension members configured to create a restoring force that urges the tension hinge towards an open position. The adjustable support device and the putting layer may be provided as a kit of parts. Thus, the invention provides a kit of parts comprising the adjustable support device described above, and a putting layer (e.g. as separate parts), wherein the adjustable support device and the putting layer may be assembled to form a golf practice apparatus as described herein. The adjustable support device may include any of the features described above with respect to the golf practice apparatus. BRIEF DESCRIPTION OF DRAWINGS Embodiments of the invention will now be described, by way of example, by reference to the drawings, in which: Figure 1Ais a diagram of a portion of a putting apparatus in an embodiment of the invention; Figure 1B is a close-up exploded view of the portion of a putting apparatus in the embodiment of the invention according to Figure 1A; Figure 1C is an alternative view of a portion of a putting apparatus in the embodiment of the invention according to Figure 1A; Figure 1D is a close-up alternative view of a portion of a putting apparatus in the embodiment of the invention according to Figure 1A; Figure 2A is a diagram of a putting apparatus in an embodiment of the invention; Figure 2B is a close-up view of a putting apparatus in the embodiment of the invention according to Figure 2A; Figure 2C is an exploded view of a putting apparatus in the embodiment of the invention according to Figure 2A; Figure 3A is a schematic diagram of a first configuration of a putting apparatus in the embodiment of the invention according to Figure 2A; Figure 3B is a schematic diagram of a second configuration of a putting apparatus in the embodiment of the invention according to Figure 2A; Figure 3C is a schematic diagram of a third configuration of a putting apparatus in the embodiment of the invention according to Figure 2A; Figure 3D is a schematic diagram of a fourth configuration of a putting apparatus according to an embodiment of the invention; Figure 4A is an exploded diagram of a connector in an embodiment of the invention; Figure 4B is a schematic diagram of the operation of the connector in the embodiment of the invention according to Figure 4A; and Figure 5 is a is a diagram of a putting apparatus according to an embodiment of the invention. DETAILED DESCRIPTION Figure 1A is a diagram of a portion of a putting apparatus in an embodiment of the invention. In particular, Figure 1A illustrates a putting apparatus according to an embodiment of the invention without the putting layer (such as a putting mat) installed. A support structure 100 comprises four connected (e.g. coupled) panels 10a, b, c, d that define a playing area 20 in use. Each of the panels 10a, b, c, d is associated with two slope adjusters 30. In particular, first panel 10a is connected to slope adjusters 30a-1 and 30a-2; second panel 10b is connected to slope adjusters 30b-1 and 30b-2; third panel 10c is connected to slope adjusters 30c-1 and 30c-2; and fourth panel 10d is connected to slope adjusters 30d-1 and 30d-2. In this embodiment the support structure comprises four panels, but in alternative embodiments, fewer than four, or more than four, panels may be used. One slope adjuster (30a-1, 30b-1, 30c-1, 30d-1) of each panel is provided proximal to a first side edge 14 of the panels and the other slope adjuster (30a-2, 30b-2, 30c-2, 30d-2) is provided proximal to a second side edge 16 opposing the first side edge. Recesses 18 are provided in each of the panels 10a, b, c and d which partially house the slope adjusters 30. In particular, the recesses 18 house valves, tubes, and pumps of the slope adjusters (explained in further detail herein). In the view of Figure 1A, slope adjusters 30b-2, 30c-2, 30d-2 and 30d-1 are partially housed in the recesses of the corresponding panels, with slope adjusters 30a-1,30a-2, 30b-1 and 30c-1 deployed laterally to the panels ready for use. Herein, the support structure and slope adjusters in combination may be referred to as an “adjustable support device”. Although in this embodiment each panel is associated with two slope adjusters, in some alternative embodiments, some panels may be associated with one slope adjuster, or more than two slope adjusters. In some embodiment, some panels of the support structure may not be in communication with any slope adjusters, and may be referred to as “passive” panels. A cup 40 Is provided in the first panel 10a located at a first end 21 of the support structure. A second end 22 of the support structure is provided substantially opposite the first end 21. The support 100 further comprises connectors (e.g. “coupling”") 60 which flexibly connect the panels 10a, b, c, d together so as to create an elongate playing area 20. Here, adjacent panels are connected together by a pair of connectors 60. However, the panels may be connected using different numbers of connectors, or alternative means of flexibly fastening the panels together. However, the panels may be connected together in other configurations to define different geometries of playing area. As will be described herein, in use a putting layer, such as a putting mat, defining a playing surface is placed on the playing area 20 of the support 100 to form a putting apparatus. Each of the panels 10a, b, c, d in this embodiment has dimensions of 60 cm (length) by 67 cm (width). In this embodiment, the panels are 5.5cm thick. The panels are connected together end-to-end so as to define the elongate rectangular playing area 20, having dimensions of 240 cm by 67 cm (approx. 8 ft by 2ft). Therefore, the support structure 100 allows for putts to be made of up to approximately 8ft, providing a suitable length for productive putting practice. The panels 10a, b, c, d are made of a semi-rigid material, such as expanded polypropylene (EPP). Each of the four panels 10a, b, c, d is associated with (e.g. connected with or connected to) two slope adjusters 30. A first portion, a pump, an actuatable valve and a tube, of each of the slope adjusters 30 protrudes from the side edges of each panel in use. A second portion, an inflatable chamber, of each slope adjuster 30 is provided underneath the panels and therefore is not visible in the view of Figure 1A. The underside of the panels 10a, b, c, dis the side opposite that of the playing area 20. Each of the slope adjusters 30 is configured to cause their respective panels to tilt when inflated, thereby changing the slope of the panels. This also consequently changes the slope of the playing area 20 and, consequently, of the playing surface of the putting mat when installed. As described above the panels are flexibly connected together using connectors 60. In other words, the panels are not rigidly fastened and have a degree of independent articulation. This advantageously allows realistic “multi-plane” contours to be established across the playing area through the actuation of the slope adjusters causing their respective panels to tilt. In the present embodiment, the connectors 60 are tension hinges, which generate a tension force between adjacent panels. In this way, sufficient tilting of a particular panel by actuation of an associated slope adjuster will cause adjacent panel(s) to also at least partially tilt. For example, actuation of the slope adjuster 30a-2 may cause directly adjacent panel 10b to tilt as well as panel 10a, even if slope adjusters 30b-1 and 30b-2 are not actuated. Depending on the strength of the tension force, further panels in addition to the directly adjacent panel may also have their slope affected. Consequently, through the use of the tension hinges 60 to connect the panels, adjustments to a particular slope adjuster will cause changes in slope across multiple panels. This advantageously provides realistic, gradual, contour profiles across the support structure to be generated with minimal adjustments of the slope adjusters. The tension hinges will be explained in further detail herein. The recesses 18 are channels in the upper surfaces of the panels 10a, b, c and d. The portions of the slope adjusters 30 that extend from the panels 10a, b, c and d when the support structure is in use can be inserted into the recesses 18 when the support is stored. The support structure can therefore be more compactly stored when not in use. The recesses 18 each comprise a removal feature 19 that facilitates easy removal of the housed portions of the slope adjusters 30. A player may insert their finger into a removal feature 19 to prise the portion of the adjuster 30 from the recess 18. The player can remove the portions of the adjusters 30 from the recesses during deployment of the support structure, prior to use. The putting mat, when installed, covers the recesses 18 so that they do not affect gameplay. Figure 1B is a close-up exploded view of the support structure 100 in the embodiment of the invention according to Figure 1A. Figure 1B depicts more clearly a pump 32 and an actuatable valve 34 of the slope adjusters 30. The recesses 18 are configured to receive the pumps 32, the valves 34 and the tubes 36 connecting these to the inflatable chambers. The pumps 32 and the valves 34 of the slope adjusters 30 each protrude from the sides of each panel when in use. The pumps 32 and the valves 34 are fluidically connected to inflatable chambers (not visible in the view of Figure 1B) provided underneath each the panels 10a, b, c, d via tubes 36. The tubes 36 are fed through recesses in the panels 10a, b, c, d to reach the inflatable chambers. The pumps 32 are actuatable by a player and are positioned on the floor adjacent their respective panels in use. In particular, the pumps 32 may be actuated by a player squeezing the pump with their hand or by pressing on the pump with their foot or a club. The valves 34 are actuated by a player by squeezing the valve with their hand. When not in use, the pumps 32 and the valves 34 may be stowed within recesses 18 in their respective panels. In the present embodiment, the cup 40 is a component part of an automatic ball returner, which may be a commercially available unit. In the exploded view of Figure 1B, a housing 42 of the ball returner (e.g. containing a battery and electronic componentry) is shown at 42. The ball returner (constituted by cup 40 and housing 42) is located within an opening 44 formed in the first panel 10a. In some embodiments, the cup 40 may be an integrated part of ball returner 42. The ball returner 42 is configured to return a golf ball to a player positioned at the second end 22 of the support 20, at the opposite end of the support 100 to the cup 40. In various embodiments, additional cup(s) may be provided such that the apparatus comprises two or more cups. Also depicted is a retractable bumper 45 provided at the edge of the first panel 10a nearest the first end 21 of the playing area 20. The bumper 45 is configured to prevent a golf ball travelling towards the first end 21 from the second 22 from rolling over the edge of the first panel 10a located at the first end 21 and off a playing surface of a putting mat. In this embodiment, the bumper 45 extends around the edge of the panel 10a nearest the first end 21 of the playing area 20 so as to define a “C” shape. The bumper 45 protrudes outwards from an upper surface of the panel 10a when in use (see Figure 2B). When not in use, the bumper may be fully or partially received within a slot located in the first panel 10a, as shown in Figure 1B to enable ease of storage. Figure 1C is an alternative view of the support structure 100. In particular, Figure 1C is a view of the underside of the support structure 100. Each of the panels 10a, b, c, d comprises two cavities 12 which each house an inflatable chamber 36 of the plurality of slope adjusters 30. In more detail, and as shown in Figure 1C, inflatable chambers 36a-1 and 36a-2 constitute portions of the slope adjusters 30a-1 and 30a-2 (shown in Figure 1 A) respectively; inflatable chambers 36b-1 and 36b-2 constitute portions of the slope adjusters 30b-1 and 30b-2 respectively; inflatable chamber 36c-1 and 36c-2 constitute portions of the slope adjusters 30c-1 and 30c-2 respectively; and inflatable chambers 36d-1 and 36d-2 constitute portions of the slope adjusters 30d-1 and 30d-2 respectively. The cavities 12 and their respective chambers 36 are provided offset from the centres of the panels to enable tilting, and proximal either to a first side edge 14 of the panels 10a, b, c and d or a second side edge 16 so as to enable left / right tilting, in addition to up / down tilting, with respect to the playing direction. In various embodiments, the inflatable chambers of the panels can be configured to be positioned at the side edge of the corresponding panel in use. For example, when deploying the support structure, the chambers may be moved to be positioned at the side of the corresponding panel. The cavities 12 are each configured to fully receive an inflatable chamber 36 when the inflatable chamber 36 is fully deflated. The depths of the cavities 12 are such that, when an inflatable chamber 36 is inflated, it begins to protrude from the cavity 12 thereby tilting its corresponding panel when the support is placed on a floor or other surface. In other terms, the depths of the cavities 12 are typically comparable to that of the height of an uninflated inflated chamber 36. Each panel 10a, b, c, d comprises two cavities 12: one of the two cavities is provided proximal to the first side edge 14 of the panels 10a, b, c, d and the other cavity is provided proximal to the second side edge 16. The positioning of the inflatable chambers in these cavities offset from the centres of the panels therefore enables “left / right” tilting in addition to up / down tilting of the support from the perspective of the direction of elongation. Furthermore, the positioning of the inflatable chambers in these cavities offset from the centres of the panels 10a, b, c, d enhances the stability of the support. The cavities 12 of the first and second panels 10a, 10b are additionally provided proximal to the first end 21 of the support, at first end edges, whereas the cavities 12 of the third and fourth panels 10c, 10d are provided proximal to the second end 22 of the support, at second end edges. An uphill profile in the playing area 20 can thus be created by inflating the chambers of the first and second panels 10a, 10b and a downhill profile in the playing area 20 can thus be created by inflating the chambers of the third and fourth panels 10c, 10d. The plurality of slope adjusters provided across the support structure advantageously enables a plurality of complex slope profiles to be achieved. For example, a flat then downhill profile in the playing area can thus be created by inflating the chambers of the third (36c-1 and 36c-2) and fourth (36d-1 and 36d-2) panels 10c, 10d equally. Aflat then uphill profile in the playing area can thus be created by inflating the chambers of the first (36a-1 and 36a-2) and second (36b-1 and 36b-2) panels 10a, 10b equally. Figure 1D is a further close-up view of the underside of the support structure 100. As is seen in Figure 1D, the shapes the inflatable chambers 36 have substantially the same shape as the openings of the cavities 12. The chambers 36 are secured within their respective cavities using screw rivets. Alternatively, the chambers may be secured within the cavities 12 by an interference fit or by other means, such as a locking mechanism. Figures 1C and 1D also illustrate a plurality of circular cavities 80 located in the underside of the panels forming the support. These cavities advantageously minimise weight of the support, thereby increasing portability. Figure 2A is a diagram of a putting apparatus 200 in an embodiment of the invention. The putting apparatus 200 comprises the support structure 100 and slope adjusters described above with reference to Figures 1Ato 1D, together with a putting layer in the form of a putting mat 50 disposed on the playing area 20 of the support 100. The putting mat 50 extends across the playing area from the first end 21 to the second end 22 so as to define a playing surface 51 that follows the adjustable contours of the underlying support structure 100. The putting mat smooths out any lips between adjacent panels of the underlying support structure and provides a smooth playing surface. A preferred playing direction, PD, is defined from the second end 22 to the first end 21. In this way, a user of the putting apparatus 200 may adjust the slope of the playing surface 51 using the plurality of slope adjusters to generate a challenging but realistic contour profile along the playing direction PD. In particular, the slope adjusters can be actuated to cause multiple slopes along the playing direction, mimicking a real putting green. However, a single, constant slope may be achieved if desired through suitable actuation of the slope adjusters. For example, inflation of the inflatable chambers of slope adjusters 30a-1, 30b-1, 30c-1 and 30d-1 may cause the corresponding panels to slope downwardly to the left from the perspective of the playing direction, generating a “right to left break” putt. Conversely, inflation of the inflatable chambers of slope adjusters 30a-2, 30b-2, 30c-2 and 30d-2 cause the corresponding panels to slope downwardly to the right from the perspective of the playing direction, generating a “left to right” break putt. Uphill and downhill sloping putts can also be established based on the relative actuations of the slope adjusters at the first and second ends of the support. In general, the plurality of slope adjusters allow the playing surface 51 to be tilted along two non-parallel directions (e.g. tiled perpendicular to the playing direction and tilted parallel to the playing direction). The connecting of the panels via tension hinges generates a smoothed, realistic, change in profile across the playing surface 51. As described, operating a single slope adjuster 30 can cause tilting of its corresponding panel and panels adjacent it due to the panels being flexibly connected with tension hinges. This advantageously creates a slope profile in the playing surface that is not only local to the slope adjuster being operated. Figures 3Ato 3D depict first, second, third and fourth configurations of the putting apparatus respectively. In Figure 3A, the first configuration depicted is that of an uphill putt. In the first configuration, the inflatable chambers 36a-2 and 36a-1 of panel 10a are inflated to a greater extent than that of inflatable chambers 36b-1 and 36b-2 of panel 10b to create an uphill profile in the playing surface. The panel 10c is also tilted due to the inflation of the inflatable chambers 36a-2, 36a-1, 36b-1 and 36b-2. In Figure 3B, the second configuration depicted is that of a downhill putt. In the second configuration, the inflatable chambers 36d-2 and 36d-1 of panel 10d are inflated to a greater extent than that of inflatable chambers 36c-1 and 36c-2 of panel 10c to create a downhill profile in the playing surface. The panel 10b is also tilted due to the inflation of the inflatable chambers 36d-2, and 36d-1, and 36c-1 and 36c-2. In Figure 3C, the third configuration depicted is that of a “hump back” putt. In the third configuration the inflatable chambers 36b-2 and 36b-1 of panel 10b and 36c-2 and 36c-1 of panel 10c are inflated to create a humped profile in the playing surface. These chambers are inflated to a greater extent than that of the chambers 36a-2 and 36a-1 of panel 10a and 36d-2 and 36d-1 of panel 10d. The panels 10a and 10b are therefore also tilted, but to a lesser degree than that of the panels 10b and 10c, due to the inflation of the inflatable chambers 36b-2 and 36b-1 and 36c-2 and 36c-1 and the tension hinges. In Figure 3D, the fourth configuration depicted is that of an uphill, left-to-right putt. The fourth configuration can be achieved, for example, by inflating the inflatable chambers 30a-2 and 30b-2 to directly adjusts the slopes of panels 10a and 10b appropriately. In order to create the specific profile depicted in Figure 3D, the inflatable chamber 30a-2 is inflated to a greater extent than inflatable chamber 30b-2. It is noted that in the examples above, the tension hinges connecting panels 10a and 10b open in a first direction, with the tension hinges connecting panels 10b and 10c opening in the opposing direction. The hinges connecting panels 10c and 10d are installed with the same configuration as those between 10a and 10b. Thus, in the scenario of Figures 3A and 3B, the surface across panels 10b and 10c remains substantially planar (as the hinges do not open substantially past 180 degrees), but in the scenario depicted in Figure 3C a “humpback” profile is achieved. In Figure 3C, although the panels 10a and 10b are substantially coplanar due to the configuration of the tension hinges connecting them, the hinges may open slightly past 180 degrees to provide the more gradual change in profile shown. This is also seen in the connection between panels 10c and 10d. In a preferred embodiment, the direction in which sets of hinges close in may alternate for respective pairs of panels, as described above. This configuration of the hinges may enable ease of folding (described later), but it is envisaged that different hinge configurations may be employed to effect different slope profiles. Referring back to Figure 2A, a hole 52 is also provided through the playing mat 50. The aperture of the hole 52 is equal to that of the rim of the cup 40. The hole 52 is located in lateral register with the cup 40 such that a golf ball rolling along the playing mat is able to fall into the cup 40 through the hole 52. However, it is envisaged that in some embodiments, the support may not comprise a cup (and, correspondingly, the mat may not comprise a hole 52). In such embodiments, putting may be practised by aiming towards a target (for example a physical target or a marking) located on the mat. The putting mat 50 is preferably removably attachable to the support 100, for example via fastening means such as flat headed bolts or screws, Velcro® or carpet clips. The putting mat may be produced using techniques known in the art. As will be noted, the playing surface 51 of the putting apparatus 200 is raised off the floor due to the thickness of the panels forming the support structure. This slight discrepancy in height between a player standing on the floor and the height of the playing surface 51 may be acceptable for the purposes of putting practice. However, a playing podium 99 may be provided in conjunction with the putting apparatus 200. A user may stand on the playing podium 99 to minimise any discrepancy in the height of the player’s feet and the putting apparatus. The playing podium 99 may have a fixed height (as shown) that is equal to a mean height of the playing surface, or may have an adjustable height and / or slope that may be configured to substantially match that of the playing surface for a given slope configuration. When a user is stood upon the podium 99 a preferred playing position is created. A putting system is formed by a combination of the podium and the apparatus 200. Figure 2B is a close-up view of the putting apparatus 200 in the embodiment of the invention according to Figure 2A. The view of Figure 2A is equivalent to that shown in Figure 1B, but with the putting mat 50 installed, covering the connectors 60, recesses 18, the interfaces between the panels, and ball returner housing 42, thereby creating a smooth playing surface. Additionally, whilst Figure 1B shows the bumper 45 in its retraced position, Figure 2B shows the bumper 45 in its protruding position, whereby it is configured to prevent a golf ball 90 from rolling off the putting apparatus 200 should it miss the cup 40. Figure 2C is a partially exploded view of a putting apparatus 200 in the embodiment of the invention according to Figure 2A. The fourth panel 10d of the support 100 comprises a chamfered end 70 and a removeable mat cover 55 at least partially covering the chamfered end 70. In addition to the features described in relation to the embodiment according to Figure 2A, Figure 2C depicts a mat cover 55 removed from the fourth panel 10d. As described above, the putting mat 50 is removably attachable to the support 100, allowing different mats to be used. Typically, the panels have dimensions such that the playing area 20 has a greater length (along the playing direction) than the mat 50, and different mats may have different lengths within manufacturing tolerance. When the playing mat is installed, the mat can be located at the second end in the correct position under the mat cover 55 to ensure that the hole 52 in the mat 50 and the opening of the cup 40 remain aligned when the apparatus 200 is in use, as the mat can be clamped underneath the mat cover 55 in the correct position. The chamfered end 70 enables the mat cover 55 to be installed at the same height as the playing surface 51 such that a player’s swing is not fouled. However, in alternative embodiments, the putting apparatus may not include the chamfered end 70 and mat cover 55 (for example as shown in Figure 3D). In such alternative embodiments, the fixings for attaching the putting mat to the support structure may be adjustable (e.g. adjustable mechanical clips) to accommodate putting mats of different lengths (for example within manufacturing tolerance). Figure 4A is an exploded diagram of a connector 60 in the form of a tension hinge, according to an embodiment of the invention. The tension hinge 60 may be used in conjunction with any of the embodiments described herein. The preferred playing direction PD is illustrated for reference. The tension hinge comprises an upper plate 62 and a lower plate 64. The upper plate 62 and the lower plate 64 are connected by a plurality of support posts 68 provided between the upper plate and the lower plate to affix the two plates. Additionally, a tension member 69 is provided between the upper and lower plates 62, 64. The upper plate 62 is provided in two (e.g. equally sized) portions 62a, 62b. Similarly, the lower plate 64 is provided in two portions 64a, 64b. The upper and lower plates may be formed from a suitable material such as plastic. The portion 62a of the upper plate and the portion 64a of the lower plate form a first section of the connector 60 and the portion 62b of the upper plate and the portion 64b of the lower plate form a second section of the connector 60. The tension member 69 connects the two sections of the tension hinge and enables a degree of free articulation of the first and second sections of the connector. The connector 60 therefore functions as a tension hinge, with the tension created by the tension member 69 creating a restoring force that urges the hinge to the “open” position seen in Figure 4A, in which the two sections of the hinge are substantially planar. The first section 62a, 64a, may be provided in a first panel, and the second section 62b, 64b, provided in a second panel so as to flexibly connect the panels with the tension hinge. The upper plate 62 comprises a (e.g. polypropylene) hinge (shown at 160), which facilitates the pivot of the connector 60. Here, the upper plate 62 comprises a “live” hinge that is an integral part of the unitary upper plate. However, other types of hinge component may be utilised to effect the pivot of the tension hinge. When the hinge 60 is in the open position as illustrated in Figure 4A, the connected panels will lie in the same plane. In this embodiment, the tension member 69 comprises a section of elasticated cord (e.g. a “bungee cord”). In alternative embodiments, the tension member may comprise spring(s) or other materials suitable for creating an extendable tension member. The tension of the elasticated member 69 is selected such that when a first panel is tilted, through the inflation of its corresponding inflatable chamber, a directly connected panel (that has not been directly tilted by an inflatable chamber) is partially tilted. In a preferred embodiment, the adjacent panel is tilted to a slope that is less steep than that of the first panel but is also not left untilted when the first panel is tilted. This preferred embodiment is depicted in Scenario 2 of Figure 4B, where it can be seen that an end of panel 2 adjacent panel 1 is partially raised with respect to the horizontal. However, the slope of panel 2 does not match that of panel 1, which has been tilted by the inflation of its corresponding inflatable chamber 36. In Scenario 2, the restoring force of the tension hinge 60 overcomes the weight of panel 2 and thus panel 2 is partially raised. In Scenario 1, a conventional hinge without tension members is used to connect the two panels. Therefore, when panel 1 is tilted, panel 2 remains untilted and unaffected by the tilting of the panel 1. Although Scenario 1 provides a multi-plane break due to flexible connection between the two panels, this is a less desirable arrangement than Scenario 2, as a more sudden change in gradient in the playing surface would be introduced when tilting the panels. This is less akin to the profile of a putting green, compared to the gradually increasing gradient across adjacent panels depicted in Scenario 2. The tension of the elasticated member should be selected such that a user is able to fold the panels approximately through 180° into a folded position, as shown in Figure 5. In various embodiments, the tension hinge 60 may close in one direction, but not the other. In other words, the hinge may not open through angles significantly greater than 180 degrees. The tension hinges may open through a small range of angles greater 180 degrees (e.g. up to approximately 10 degrees greater), for example to prevent accidental breakage. Tension hinges 60 may be provided in opposite configurations between different pairs of panels in order to facilitate folding of adjacent panels in different directions. For example, connectors of the end panels may only permit the end panels to fold inwardly, whilst the connectors of the middle panels may only permit the middle panels to fold outwardly. A connector or connector 60 may close in the opposite direction to that depicted in scenarios 1 and 2 of Figure 4B, for example. In other terms, the direction in which connectors or sets of connectors close in may alternate for respective pairs of panels. This may allow for ease of folding the putting apparatus, and also enables different configurations of the contour profile. Figure 5 is a diagram of the support for a putting apparatus 100 in a folded configuration. In this configuration, the support structure 100 may advantageously be compactly stored (for example having first removed the putting mat). Features such as the slope adjusters are stored entirely within the cavities and recesses of their corresponding panels (as described herein above), and the panels 10a, b, c and d can therefore be folded to be flush with one another. As described above, the connectors 60 operate as hinges, which hinge through 180 degrees. The panels 10a, b, c and d do not have to be detached from each other when storing the support, therefore. The embodiments outlined above describe a putting apparatus that comprises four connected panels, with each panel being in communication with two slope adjusters. However, it will be appreciated that other configurations may be used. For example, the support may comprise fewer than four, or more than four, panels. Additionally, although the described configuration in which each panel is in communication with two slope adjusters advantageously provides enhanced control over the slope of the playing surface as well as improved stability of the apparatus, it is envisaged that in some embodiments, only a subset of the panels may comprise slope adjuster(s). In some scenarios, it is envisaged that the support may comprise only a single slope adjuster. Further exemplary embodiments of the present disclosure are set out in the following numbered clauses: [Numbered Clause 1]: An adjustable support device for a golf practice apparatus, comprising: a support structure comprising two or more panels flexibly connected together so as to define a playing area configured to receive a putting layer; and one or more inflatable chambers located on a side of the support structure opposing the playing area, whereby the profile of the playing area may be changed through inflation and deflation of the inflatable chambers. [Numbered Clause 2]: The device of Numbered Clause 1, wherein the two or more panels comprise first and second panels that are flexibly connected together such that a slope of the first panel is partially dependent on a slope of the second panel. [Numbered Clause 3]: The device of Numbered Clause 1 or Numbered Clause 2, wherein the panels are flexibly connected together with one or more tension connectors, each of the one or more tension connectors comprising a tension member. [Numbered Clause 4]: The device of any of the preceding Numbered Clauses wherein the panels are flexibly connected together via one or more tension hinges, preferably wherein each of the one or more tension hinges comprises one or more tension members configured to create a restoring force that urges the tension hinge towards an open position. [Numbered Clause 5]: The device of any of the preceding Numbered Clauses, comprising a plurality of inflatable chambers configured to enable tilting of the support structure along two non-parallel directions. [Numbered Clause 6]: The device of any of the preceding Numbered Clauses, wherein each of the two or more panels is in communication with at least one inflatable chamber. [Numbered Clause 7]: The device of any of the preceding Numbered Clauses, wherein one or more of the panels is in communication with two or more inflatable chambers. [Numbered Clause 8]: The device of any of the preceding Numbered Clauses, wherein the lateral area of each of the panels is at least twice as large as the lateral area of a corresponding inflatable chamber. [Numbered Clause 9]: The device of any of the preceding Numbered Clauses, wherein the support structure comprises three or more panels flexibly connected together. [Numbered Clause 10]: The device of any of the preceding Numbered Clauses, wherein each of the inflatable chamber(s) is configured to have a first inflation position in which it is fully located within a cavity of the corresponding panel and a second inflation position in which it protrudes from the cavity. [Numbered Clause 11]: The device of any of the preceding Numbered Clauses, wherein at least one of the inflatable chamber(s) is provided at a side edge of the corresponding panel or is configured to be positioned at a side edge of the corresponding panel in use. [Numbered Clause 12]: The device of any of the preceding Numbered Clauses, wherein the inflatable chamber(s) of the panel at a first end of the support structure are provided proximal to the first end of the support structure. [Numbered Clause 13]: The device of any of the preceding Numbered Clauses, the inflatable chamber(s) of the panel at a second end of the support structure are provided proximal to the second end of the support structure, wherein the first end is opposite the second end. [Numbered Clause 14]: The device of any of the preceding Numbered Clauses, further comprising one or more cups configured to receive a golf ball, preferably wherein the one or more cups are provided at a first end of the support structure. [Numbered Clause 15]: The device of any of the preceding Numbered Clauses, wherein each inflatable chamber is in fluid communication with an actuator configured to inflate the inflatable chamber. [Numbered Clause 16]: The device of any of Numbered Clause 15, wherein the actuator comprises a pump. [Numbered Clause 17]: The device of any of the preceding Numbered Clauses, wherein each inflatable chamber is in fluid communication with an actuatable valve that, when actuated, enables the inflatable chamber to deflate. [Numbered Clauses 18]: The device of any of Numbered Clauses 15 to 17, wherein the actuators and / or the actuatable valves are provided exterior to the panels in use. [Numbered Clause 19]: The device of any of Numbered Clauses 15 to 18, wherein each of the panels comprises a recess configured to receive and house the actuator and the actuatable valve. [Numbered Clause 20]: The device of any of the preceding Numbered Clauses, wherein the support structure comprises a first configuration in which the panels are folded, and a second configuration in which the panels are unfolded and define the playing area. [Numbered Clause 21]: The device of any of the preceding Numbered Clauses, wherein the panels are semi-rigid panels. [Numbered Clause 22]: The device of any of the preceding Numbered Clauses, wherein the panels comprise one or more open or closed cell plastic foams, preferably wherein the panels comprise expanded polypropylene, EPP. [Numbered Clause 23]: The device of any of the preceding Numbered Clauses, further comprising a retractable bumper positioned at least partially around the edges of the support structure. [Numbered Clause 24]: A golf practice apparatus comprising the adjustable support device of any of the preceding Numbered Clauses, and a putting layer provided over the playing area. [Numbered Clause 25]: A kit of parts comprising the adjustable support device of any of Numbered Clauses 1 to 23, and a putting layer, wherein the adjustable support device and the putting layer may be assembled to form the golf practice device of Numbered Clause 24.

Claims

1. A golf practice apparatus, comprising:a support structure comprising two or more panels flexibly connected together so as to define a playing area;a putting layer provided over the playing area of the support structure, wherein the putting layer defines a playing surface; andone or more inflatable chambers located on a side of the support structure opposing the playing surface, whereby the profile of the playing surface may be changed through inflation and deflation of the inflatable chambers.

2. An apparatus according to claim 1 wherein the two or more panels comprise first and second panels that are flexibly connected together such that a slope of the first panel is partially dependent on a slope of the second panel.

3. An apparatus according to claim 1 or claim 2, wherein the panels are flexibly connected together with one or more tension connectors, each of the one or more tension connectors comprising a tension member.

4. An apparatus according to any preceding claim, wherein the panels are flexibly connected together via one or more tension hinges, preferably wherein each of the one or more tension hinges comprises one or more tension members configured to create a restoring force that urges the tension hinge towards an open position.

5. An apparatus according to any preceding claim, comprising a plurality of inflatable chambers configured to enable tilting of the support structure along two non-parallel directions.

6. An apparatus according to any preceding claim, wherein each of the two or more panels is in communication with at least one inflatable chamber.

7. An apparatus according to any preceding claim, wherein one or more of the panels is in communication with two or more inflatable chambers.

8. An apparatus according to any preceding claim, wherein the lateral area of each of the panels is at least twice as large as the lateral area of a corresponding inflatable chamber.

9. An apparatus according to any preceding claim, wherein the support structure comprises three or more panels flexibly connected together.

10. An apparatus according to any preceding claim, wherein each of the inflatable chamber(s) is configured to have a first inflation position in which it is fully located within a cavity of the corresponding panel and a second inflation position in which it protrudes from the cavity.

11. An apparatus according to any preceding claim, wherein at least one of the inflatable chamber(s) is provided at a side edge of the corresponding panel or is configured to be positioned at a side edge of the corresponding panel in use.

12. An apparatus according to any preceding claim, wherein the inflatable chamber(s) of the panel at a first end of the support structure are provided proximal to the first end of the support structure.

13. An apparatus according to claim 12, wherein the inflatable chamber(s) of the panel at a second end of the support structure are provided proximal to the second end of the support structure, wherein the first end is opposite the second end.

14. An apparatus according to any preceding claim, further comprising: one or more cups configured to receive a golf ball, preferably wherein the one or more cups are provided at a first end of the support structure.

15. An apparatus according to any preceding claim, wherein each inflatable chamber is in fluid communication with an actuator configured to inflate the inflatable chamber.

16. An apparatus according to claim 15, wherein the actuator comprises a pump.

17. An apparatus according to any preceding claim, wherein each inflatable chamber is in fluid communication with an actuatable valve that, when actuated, enables the inflatable chamber to deflate.

18. An apparatus according to any of claims claim 15 to 17, wherein the actuators and / or the actuatable valves are provided exterior to the panels in use.

19. An apparatus according to any of claims 15 to 18, wherein each of the panels comprises a recess configured to receive and house the actuator and the actuatable valve.

20. An apparatus according to any preceding claim, wherein the support structure comprises a first configuration in which the panels are folded, and a second configuration in which the panels are unfolded and define the playing area.

21. An apparatus according to any preceding claim, wherein the panels are semi-rigid panels.

22. An apparatus according to any preceding claim, wherein the panels comprise one or more open or closed cell plastic foams, preferably wherein the panels comprise expanded polypropylene, EPP.

23. An apparatus according to any of the preceding claims, further comprisinga retractable bumper positioned at least partially around the edges of the support structure.

24. An apparatus according to any of the preceding claims, wherein the putting layer is removably attachable to the support structure.

25. A kit of parts comprising a support structure, one or more inflatable chambers, and a putting layer that may be assembled to form the golf practice apparatus of any of the preceding claims.

26. A golf practice system, comprising:the golf practice apparatus according to any of the claims 1 to 24; anda playing podium having an elevated standing surface, whereby a user may stand on the standing surface to perform putts on the golf practice apparatus.

27. An adjustable support device for a golf practice apparatus, comprising: a support structure comprising two or more panels flexibly connected together so as to define a playing area configured to receive a putting layer; and one or more inflatable chambers located on a side of the support structure opposing the playing area, whereby the profile of the playing area may be changed through inflation and deflation of the inflatable chambers.

28. The device of claim 27, wherein the two or more panels comprise first and second panels that are flexibly connected together such that a slope of the first panel is partially dependent on a slope of the second panel.

29. The device of claim 27 or claim 28, wherein the panels are flexibly connected together with one or more tension connectors, each of the one or more tension connectors comprising a tension member.

30. The device of any of claims 27 to 29, wherein the panels are flexibly connected together via one or more tension hinges, preferably wherein each of the one or more tension hinges comprises one or more tension members configured to create a restoring force that urges the tension hinge towards an open position.

31. A kit of parts comprising an adjustable support device according to any of claims 27 to 30, and a putting layer, wherein the adjustable support device and the putting layer may be assembled to form the golf practice apparatus according to any of claims 1 to 24.36

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