WOBBLE BOARD

Cross-Reference to Related Application

[0001] This application claims priority to U.S. Provisional Patent Application No.

62/657,982 filed on April 16, 2018 the entire content of which is incorporated herein by reference.

Field

[0002] This application relates to balance boards and in particular to wobble boards.

[0003] Balance boards are used for recreation, balance training, athletic training, physiotherapy, rehabilitation and other kinds of personal development. Balance boards can also be used by a user working at a stand-up desk. One type of balance board is a wobble board.

[0004] Wobble boards pivot in all directions: forward-backward, left-right, and anywhere in between, i.e. 360 degrees. Standing on a wobble board exercises muscles that are not exercised by standing on a balance board that tilts in only two (opposite) directions.

[0005] The basic exercise of using a wobble board is standing on the wobble board with both feet and tilting it in any direction without letting the board tilt so far that its edges touch the ground.

[0006] Various wobble boards have been considered. U.S. Patent No. 9,457,226 to Heath discloses a work platform that has a top member with a surface sized to receive a user's feet thereon while standing and a bottom member coupled to the top member. The bottom member has a width and length generally equal to the width and length of the top member. The bottom member has a curved surface generally at the longitudinal center of the work platform defined at least partially by a radius of curvature of between about 100 mm and about 850 mm. The curved surface induces instability under a user standing on the top member to thereby facilitate active muscle engagement in the user's legs while standing on the work platform.

[0007] U.S. Patent Application Publication No. 2010/0087301 to Juncker discloses a balancing device comprising a board member and a pivoting member comprising a contact face for abutting a surface, wherein said pivoting member comprises integrated contact face adjusting means for changing the geometrical shape of said contact face.

[0008] Although wobble boards have been considered, improvements are desired. It is therefore an object at least to provide a novel wobble board. Summary

[0009] It should be appreciated that this Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description.

This Summary is not intended to be used to limit the scope of the claimed subject matter.

[0010] Accordingly, in one aspect there is provided a wobble board comprising a platform, a base having a generally flat bottom surface, and at least one compressible member positioned intermediate the platform and the base such that the platform is pivotable with respect to the base.

[0011] In one or more embodiments, the at least one compressible member compresses in response to an axial force being applied thereto.

[0012] In one or more embodiments, the wobble board comprises an adjustment mechanism configured to adjust a level of compression of the at least one compressible member.

[0013] In one or more embodiments, the axial force is at least partially from the adjustment mechanism.

[0014] In one or more embodiments, the adjustment mechanism comprises a threaded member connecting the platform to the base.

[0015] In one or more embodiments, rotation of the platform relative to the base via the threaded member adjusts the level of compression of the at least one compressible member.

[0016] In one or more embodiments, the wobble board is adjustable and useable in a single mode.

[0017] In one or more embodiments, the wobble board comprises a locking mechanism configured to set the wobble board in use mode or adjustment mode.

[0018] In one or more embodiments, in a first position, the locking mechanism sets the wobble board to use mode, and in a second position, the locking mechanism sets the wobble board to adjustment mode.

[0019] In one or more embodiments, the locking mechanism is rotatable between the first and second positions.

[0020] In one or more embodiments, the locking mechanism is positioned on a top surface of the platform.

[0021] In one or more embodiments, the locking member comprises an interlocking plate positioned on the top surface of the platform and comprising at least one inclined groove, and a disc comprising a plurality of teeth positioned within an opening of the platform adjacent the interlocking plate, the disc having at least one locking member projecting from a surface thereof.

[0022] In one or more embodiments, in the first position, the locking member is positioned within the inclined groove at a lowest point thereof, and in the second position the locking member is positioned within the inclined groove at a highest position thereof. [0023] In one or more embodiments, the greater the level of compression of the at least one compressible member the less range of pivot the platform has relative to the base.

[0024] In one or more embodiments, the axial force is at least partially from a force being applied to a top surface of the platform.

[0025] In one or more embodiments, the force applied to the top surface of the platform is from a user standing on the platform.

[0026] In one or more embodiments, the base is positioned on a support surface, the support defining a pivot limit of the platform.

[0027] In one or more embodiments, at least a portion of the platform is in contact with the support surface when at the pivot limit.

[0028] In one or more embodiments, the at least one compressible member is made of one of an elastic material, a rubber material and a foam material.

[0029] In one or more embodiments, the at least one compressible member has a rounded top surface.

[0030] In one or more embodiments, the at least one compressible member compresses axially.

[0031] In one or more embodiments, the at least one compressible member expands radially when compressed axially.

Brief Description of the Drawings

[0032] Embodiments will now be described more fully with reference to the

accompanying drawings in which:

[0033] Figure 1 is a cross-sectional view of a wobble board;

[0034] Figure 2 is an exploded view of the wobble board of Figure 1 ;

[0035] Figure 3 is a top view of a platform forming part of the wobble board of Figure 1 ;

[0036] Figure 4 is a top view of a base forming part of the wobble board of Figure 1 ;

[0037] Figures 5A and 5B are a bottom view and a cross-sectional view, respectively, of a compressible member forming part of the wobble board of Figure 1 ;

[0038] Figure 6 is an exploded view identifying elements of an adjustment mechanism forming part of the wobble board of Figure 1 ;

[0039] Figure 7 is an isometric view of a stem forming part of the adjustment mechanism of Figure 6;

[0040] Figure 8 is an isometric view of a socket forming part of the adjustment mechanism of Figure 6;

[0041] Figure 9 is an isometric view of a chassis forming part of the adjustment mechanism of Figure 6; [0042] Figure 10 is an exploded view identifying elements of a locking mechanism forming part of the wobble board of Figure 1 ;

[0043] Figure 11 is an isometric view of a bearing plate forming part of the locking mechanism of Figure 10;

[0044] Figure 12 is an isometric view of an interlock disc forming part of the locking mechanism of Figure 10;

[0045] Figure 13 is a bottom view of an interlock trigger plate forming part of the locking mechanism of Figure 10;

[0046] Figure 14 is an isometric view of a locking member forming part of the locking mechanism of Figure 10;

[0047] Figure 15 is a cross-sectional view of the wobble board of Figure 1 in use mode;

[0048] Figure 16 is a plan view of the wobble board of Figure 1 with a user standing on the platform thereof, the wobble board being balanced;

[0049] Figure 17 is another plan view of the wobble board of Figure 1 with a user standing on the platform thereof, the wobble board being unbalanced;

[0050] Figure 18 is a cross-sectional view of the wobble board of Figure 1 in adjustment mode;

[0051] Figure 19 is a plan view of a user adjusting the wobble board of Figure 1 by hand;

[0052] Figure 20 is a plan view of a user adjusting the wobble board of Figure 1 by standing on it;

[0053] Figure 21 is another cross-sectional view of the wobble board of Figure 1 in adjustment mode;

[0054] Figure 22 is another cross-sectional view of the wobble board of Figure 1 in use mode;

[0055] Figure 23 is an isometric view of another embodiment of a wobble board;

[0056] Figure 24 is an isometric view of another embodiment of a wobble board; and

[0057] Figures 25A and 25B are isometric views of another embodiment of a wobble board.

Detailed Description of the Embodiments

[0058] The foregoing summary, as well as the following detailed description of certain examples will be better understood when read in conjunction with the appended drawings.

As used herein, an element or feature introduced in the singular and preceded by the word "a" or "an" should be understood as not necessarily excluding the plural of the elements or features. Further, references to "one example" or“one embodiment” are not intended to be interpreted as excluding the existence of additional examples or embodiments that also incorporate the described elements or features. Moreover, unless explicitly stated to the contrary, examples or embodiments "comprising" or "having" or“including” an element or feature or a plurality of elements or features having a particular property may include additional elements or features not having that property. Also, it will be appreciated that the terms“comprises”,“has”,“includes” means“including by not limited to” and the terms “comprising”,“having” and“including” have equivalent meanings.

[0059] As used herein, the term“and/or” can include any and all combinations of one or more of the associated listed elements or features.

[0060] It will be understood that when an element or feature is referred to as being“on”, “attached” to,“connected” to,“coupled” with,“contacting”, etc. another element or feature, that element or feature can be directly on, attached to, connected to, coupled with or contacting the other element or feature or intervening elements may also be present. In contrast, when an element or feature is referred to as being, for example,“directly on”, “directly attached” to,“directly connected” to,“directly coupled” with or“directly contacting” another element of feature, there are no intervening elements or features present.

[0061] It will be understood that spatially relative terms, such as“under”,“below”,

“lower”,“over”,“above”,“upper”,“front� �,“back” and the like, may be used herein for ease of description to describe the relationship of an element or feature to another element or feature as illustrated in the figures. The spatially relative terms can however, encompass different orientations in use or operation in addition to the orientation depicted in the figures.

[0062] It will be understood that a wobble board may also be referred to in the art as a work platform, balancing device, platform for work while standing, balance board, etc.

[0063] Turning to Figures 1 and 2, a wobble board is shown and is generally identified by reference numeral 50. In this embodiment, the wobble board comprises a platform 100, a base 200, a compressible member 300, an adjustment mechanism 400 and a locking mechanism 500. The compressible member 300 is positioned intermediate the platform 100 and the base 200. The compressible member 300 allows the platform 100 to pivot with respect to the base 200 in all directions, that is, forward, backward, left, right, and anywhere in between, i.e. 360 degrees. As will be appreciated, the limit as to how much the platform 100 can pivot with respect to the base 200 is defined by a support surface on which the wobble board 50 is placed, which is typically a floor. The adjustment mechanism 400 extends from the base 200 to the platform 100 and is used to adjust a level of compression of the compressible member 300. The locking mechanism 500 is positioned above the compressible member 300 and is used to set the wobble board 50 in use mode or adjustment mode. Put another way, the locking mechanism 500 enables the adjustment mechanism 400 to adjust the level of compression of the compressible member 300, as will be described in more detail below.

[0064] As shown in Figure 3, in this embodiment the platform 100 is generally annular shaped and has a circular opening 105 defined therein. The platform 100 has a radius r _p defined from a center thereof. The opening 105 is located at the center of the platform 100. ln this embodiment, the platform 100 is made of wood. As will be appreciated, in other embodiments the platform 100 may be made of any rigid material such as for example metal, plastic or laminate.

[0065] As shown in Figure 4, in this embodiment, the base 200 is generally annular shaped and has a circular opening 205 defined therein. The base 200 has a radius r _b defined from a center thereof. The radius r _b of the base 200 is less than the radius r _p of the platform 100. The opening 205 is located at the center of the base 200. In this embodiment, the base 200 is made of metal. As will be appreciated, in other embodiments the base 200 may be made of any rigid material such as for example wood, plastic or laminate.

[0066] As shown in Figures 5A and 5B, in this embodiment the compressible member 300 is generally frustoconical shaped and has an opening 305 defined therein. The compressible member 300 has a rounded top surface 310. The opening 305 extends from the top surface 310 to a bottom surface 315. The bottom surface 315 has a radius r _c.bot tom defined from a center thereof. The top surface 310 has a radius (not shown) less than the radius r _c.bo ttom· The bottom surface 315 has a diameter d _{c. ot} tom that is greater than a diameter of the circular opening 205 of the base 200. The diameter d _{c bottom} is less than a diameter of the platform 100 and the base 200. In this embodiment, the compressible member 300 is made of an elastic material such as for example rubber or elastomer. As such, the compressible member 300 expands radially in response to an axial force applied thereto.

The compressible member 300 is positioned such that the bottom surface 315 is in contact with a top surface of the base 200 and the opening 305 of the compressible member 300 is aligned with the opening 205 of the base 200. The compressible member 300 is secured intermediate the platform 100 and the base 200 using components of the adjustment mechanism 400 and the locking mechanism 500, as will be described.

[0067] The adjustment mechanism 400 is shown in Figures 6 to 9. In this embodiment, the adjustment mechanism 400 comprises a stem 405, a socket 410, a dowel pin 415, a washer 420 and a chassis 425.

[0068] As best shown in Figure 7, the stem 405 comprises a head 430 and a threaded shank 435 extending therefrom. An opening 440 extends through the head 430. The opening 440 is dimensioned to receive the dowel pin 415.

[0069] As shown in Figure 8, the socket 410 comprises body 445 dimensioned to fit within the opening 205 of the base 200. The body 445 is generally inverted bowl-shaped, that is, the body 445 is generally concave-shaped and has an open bottom 446. A flange 450 extends about a periphery of the open bottom 446 of the body 415. When the body 445 is positioned in the opening 205 of the base, the flange 450 ensures the body 445 does not pass entirely therethrough. An opening 455 is defined on the concave-shaped portion of the body 445, opposite the open bottom 446. Openings 456 are defined on opposite sides of the body 445 adjacent the flange 450. The openings 456 are dimensioned to receive the dowel pin 415.

[0070] As best shown in Figure 6, the washer 420 is generally annular shaped and has a circular opening 460 defined therein. As will be appreciated, in other embodiments multiple washers may be used.

[0071] As shown in Figure 9, the chassis 425 comprises a generally annular shaped body 465. A groove 470 is defined about the circumference of a top surface 471 of the body 465. The groove 470 is dimensioned to receive and retain ball bearings 475 (shown in Figure 6) therein. A threaded member 480 extends from the top surface 471 of the body 465 and is dimensioned to receive and mate with the threaded shank 435 of the stem 405. A nut 485 is positioned around a base of the threaded member 480 and is in contact with the top surface 471 of the body 465. The nut 485 is secured to the threaded member 480.

[0072] During assembly of the wobble board 50, the head 430 of the stem 405 is positioned within the body 445 of the socket 410. The dowel pin 415 is inserted through a first one of the openings 456 on the body 445, through the opening 440 of the head 430, and through a second one of the openings 456 on the body 445. As such, the stem 405 is fixed in position axially within the socket 410. The threaded shank 435 of the stem 405 extends through the opening 455 on the body 445 of the socket 410. The washer 420 is positioned above the compressible member 300 such that the opening 460 of the washer 420 is aligned with the opening 305 of the compressible member 300. The chassis 425 is positioned above the washer 420 and the compressible member 300 such that the threaded member 480 is aligned with the opening 460 of the washer 420 and the opening 305 of the compressible member 300. The socket 410, together with the stem 405, is positioned in the opening 205 of the base 200. In this manner, the threaded shank 435 extends through the opening 305 of the compressible member 300 and the opening 460 of the washer 420 and into the threaded member 480 of the chassis 425. The ball bearings 475 are positioned within the groove 470 of the chassis 425. The threaded member 480 of the chassis 425 is connected to components of the locking mechanism 500, as will be described.

[0073] The locking mechanism 500 in Figures 10 to 14. In this embodiment, the locking mechanism 500 comprises a bearing plate 505, an interlock spring 510, an interlock disc 515, an interlock trigger plate 520 and a locking member 525.

[0074] As shown in Figure 11 , the bearing plate 505 comprises a generally annular body 530 having an opening 535. The body 530 is dimensioned to extend through the opening 105 of the platform 100. A groove 540 extends about a periphery of one end of the body 530, radially outward from the opening 535, and is configured to receive and retain ball bearings 542 (shown in Figure 10) therein. Teeth 545 extend radially inward from the opening 535 of the body 530. A flange 550 extends adjacent an opposite end of the body 530. Openings 555 are defined in the flange 550, each of which is dimensioned to receive a fastening member 560 which in this embodiment is a screw. The fastening members 560 connect the bearing plate 505 to a bottom surface of the platform 100.

[0075] The interlock spring 510 (shown in Figure 10) is used to exert a generally upward force on the interlock disc 515. The generally upward force encourages contact between the interlock disc 515 and the interlock plate 520 and helps to ensure that teeth of the interlock disc 515 remain engaged during adjustment mode, as will be described in more detail below.

[0076] As shown in Figure 12, the interlock disc 515 comprises a generally annular body 565 having a hexagonal shaped opening 570 defined therein. The hexagonal shaped opening 570 is dimensioned to receive and engage with the nut 485 of the of the chassis 425. Teeth 575 extend radially outward from the body 565 and are dimensioned to mate with the teeth 545 of the bearing plate 505. A number of projections 580, which in this embodiment is three (3) projections 580, are positioned on a top surface 585 of the body 565 at spaced apart locations from one another.

[0077] In this embodiment, each projection 580 is positioned on the top surface 585 of the body 565 inset from an outer edge 586 thereof. Each projection 580 is in the shape of a curved-ramp and comprises a first upper surface 581 and a second upper surface 582. The first upper surface 581 is generally flush with the top surface 585 of the body 565. The second upper surface 582 extends a distance above the top surface 585. The curve of the curved-ramp is generally equal to that of the outer edge 586 of the body 565. An opening 583 is defined on the projection 580 adjacent the second upper surface 582. A tab 584 extends up from the second upper surface 582 over top of the opening 532.

[0078] A bottom view of the interlock trigger plate 520 is shown in Figure 13. As can be seen, the interlock trigger plate 520 comprises a generally annular body 590 having an opening 592. A groove 595 extends about a periphery of a bottom surface 593 of the body 590. The groove 595 is dimensioned to receive and retain ball bearings 542 (shown in Figure 10). A number of inclined grooves 600, which in this embodiment is three (3) inclined grooves 600, are defined on the bottom surface 593 of the body 590 at spaced apart locations from one another. The location and number of inclined grooves 600 corresponds to that of the location and number of projections 580 that extend from the body 565 of the interlock disc 515. Further, each inclined groove 600 is dimensioned and shaped to correspond to or complement one of the projections 580 of the interlock disc 515.

[0079] In this embodiment, each inclined groove 600 has a first end 601 that is generally flush with the bottom surface 593 of the body 590 and a second end 602 that is set in the body 590. A depth of each groove 600 gradually increases from the first end 601 to the second end 602. Openings 605 are defined on the body 590, each of which is dimensioned to receive one of fastening members 610 (shown in Figure 10) which in this embodiment is a screw. [0080] As shown in Figure 14, the locking member 525 comprises a dome-shaped body 615. A locking tab 620 extends from a top surface of the locking member 525. Openings 625 extend through the body 615, each of which is dimensioned to receive one of the fastening members 610 (shown in Figure 10). The fastening members 610 are used to connect the locking member 525 to the interlock trigger plate 520. A locknut 630 and retaining disc 635 (shown in Figure 10) are also used to connect the locking member 525 to the interlock trigger plate 520.

[0081] During assembly of the wobble board 50, the bearing plate 505 is inserted into the opening 105 of the platform 100. The fastening members 560 are inserted through openings 555 and are screwed into the bottom surface of the platform 100. The platform 100 along with the bearing plate 505 are positioned on top of the chassis 425 such that the threaded member 480 of the chassis 425 extends through the opening 535 of the bearing plate. A bottom surface of the bearing plate 505 is in contact with the ball bearings 475.

The interlock spring 510 is positioned such that it is in contact with top surface 471 of the chassis 425 and such that it encircles the nut 485 and threaded member 480 of the chassis 425. The interlock disc 515 is inserted into the opening 535 of the bearing plate 505. The hexagonal shaped opening 570 engages with the nut 485 of the chassis 425. The projections 580 of the interlock disc 515 extend generally upward. As the interlock disc 515 compresses the interlock spring 510, the interlock spring 510 exerts a generally upward force on the interlock disc 515. Ball bearings 542 are positioned within the groove 540 of the bearing plate 505.

[0082] In this embodiment, the wobble board 50 is operable in two modes: use mode and adjustment mode. As will be described, during use mode a user stands on the top surface of the platform and tries to maintain the wobble board 50 in a balanced position. During adjustment mode, a level of compression of the compressible member is adjusted to increase or decrease the difficulty of use of the wobble board 50 based on the user’s preference.

[0083] A cross-sectional view of the wobble board 50 in use mode is shown in Figure 15. As can be seen, the interlock disc 515 is positioned such that the tab 584 of each projection 580 is positioned in the first end 601 of a corresponding inclined groove 600. In this position, the teeth 575 of the interlock disc 515 are not engaged with the teeth 545 of the bearing plate 505. In the example shown, the level of compression of the compressible member 300 is at a minimum and as such the wobble board 50 is at a least stable setting.

[0084] During operation in the use mode, a user stands on the top surface of the platform 100 as shown in Figure 16. The weight of the user causes an axial force to be applied to the compressible member 300 and in response the compressible member 300 compresses. As the user’s weight shifts on top of the wobble board 50, the platform 100 pivots with respect to the base 200. As mentioned previously, the platform 100 is able to pivot with respect to the base 200 in all directions, forward, backward, left, right, and anywhere in between, i.e. 360 degrees. In this embodiment, the limit as to how much the platform 100 can pivot with respect to the base 200 is defined by a support surface on which the wobble board 50 is placed on. Put another way, the platform 100 can only pivot with respect to the base 200 until a portion of the platform 100 contacts the support surface, thereby inhibiting further pivot. An example of this is shown in Figure 17. As will be appreciated, since the compressible member 300 is made of an elastic material, the threaded member 480 is able to pivot by slightly deforming the compressible member 300 in the direction of pivot. In use mode, the platform 100 is also able to spin/rotate with respect to the base 200.

[0085] To transition operation the wobble board 50 from use mode to adjustment mode, the locking tab 620 of the locking member 525 is rotated in a direction, which in this embodiment is clock-wise. As the locking tab 620 is rotated, each projection 580 travels up the respective inclined groove 600 until the tab 584 is positioned in the second end 602 of the corresponding inclined groove 600. The interlock spring 510 further helps each projection 580 travel up the respective inclined groove 600.

[0086] Once the tabs 584 of each projection 580 are positioned in the second end 602 of the corresponding inclined groove, the wobble board 50 is in adjustment mode. A cross- sectional view of the wobble board 50 in adjustment mode is shown in Figure 18. As can be seen, the interlock disc 515 is positioned such that the tab 584 of each projection 580 is positioned in the second end 602 of the corresponding inclined groove 600. In this position, the teeth 575 of the interlock disc 515 are engaged with the teeth 545 of the bearing plate 505.

[0087] As mentioned previously, during adjustment mode the user can adjust the level of compression of the compressible member 300 and thus can adjust the difficultly in balancing the wobble board 50. In adjustment mode, the platform 100 can be rotated by the user to adjust the level of compression of the compressible member 300. As the platform 100 is rotated, the threaded member 480 of the chassis 425 rotates with respect to the threaded shank 435. As such, the platform 100 is raised or lowered with respect to the base 200, based on a direction of rotation. As the platform 100 is raised or lowered, the level of compression of the compressible member 300 is adjusted. As shown in Figure 19, the platform 100 may be rotated by hand. As shown in Figure 20, the platform 100 may be rotated while the user is standing thereon.

[0088] As shown in Figure 21 , the platform 100 has been lowered and thus is closer to the base 200 (compared to the example shown in Figure 18). As such, the level of compression of the compressible member 300 is greater and the wobble board 50 is more stable (compared to the example shown in Figure 18). The wobble board 50 is then set back to use mode by rotating the locking tab 620, as shown in Figure 22. [0089] As will be appreciated, the wobble board 50 may be used for recreation, balance training, athletic training, physiotherapy, rehabilitation and other kinds of personal development. The wobble board 50 can also be used by a user working at a stand-up desk. As the user increases their balance/strength, the wobble board 50 can be adjusted to increase the difficulty of use. In the event of an injury or due to aging, the wobble board 50 can be adjusted to decrease the difficulty of use.

[0090] Turning now to Figure 23, another embodiment of a wobble board is shown and is generally identified by reference numeral 750. The wobble board 750 is generally identical to that of wobble board 50, with the following exceptions. In this embodiment, the wobble board 750 comprises a number of sensors 800 and 810. Sensor 800 is configured to monitor a degree of pivot of the platform 100. Sensor 810 is configured to monitor the level of compression of the compressible member 300 and to monitor a force applied to the compressible member 300 which can be used to calculate a weight (or mass) of the user.

As will be appreciated, other sensors may be employed to monitor additional parameters of the wobble board and may be placed at various locations thereon. For examples, strain gauges, proximity sensors, accelerometers, gyroscopes and magnetometers may be used. The sensors may be wire or wirelessly coupled to a mobile device, a gaming device and/or a computer and may communicate sensor data thereto for processing. For example, the wobble board may be connected to a gaming device. The sensors may communicate data about manipulation of the wobble board to the gaming device which can be processed or interpreted for gameplay. As another example, the wobble board may wirelessly connect to a mobile device. The sensors may communicate data about manipulation of the wobble board to the mobile device which can be processed or interpreted to assess health or fitness statistics of the user.

[0091] Turning now to Figure 24, another embodiment of a wobble board is shown and is generally identified by reference numeral 850. The wobble board 850 is generally identical to that of wobble board 50, with the following exceptions. In this embodiment, the wobble board 850 does not have a locking mechanism. Specifically, the wobble board 850 does not have a an interlock spring, an interlock disc, an interlock trigger plate or a locking member. Further, the bearing plate used by wobble board 50 is replaced with a bearing plate 860 which does not require teeth. In this embodiment, the bearing plate 860 is attached to the threaded member 480. A machine screw 880 is threadably connected to interior threadings of the stem 435. A washer 885 is positioned underneath a head of the machine screw 880. The machine screw 880 and washer 885 are used to ensure that the threaded member 480 does not come off the stem 435 when rotated.

[0092] Rather than a locking member, the wobble board 850 comprises a cap 870 dimensioned to cover the circular opening 105 of the platform 100. [0093] In this embodiment, since the wobble board 850 does not require a locking mechanism, the wobble board 850 operates in a single mode which is both an adjustment mode and a use mode. During use, a user stands on the top surface of the platform and tries to maintain the wobble board 850 in a balanced position. In the event the user would like to increase or decrease the difficulty of use of the wobble board 850, the user can adjust the level of compression of the compressible member 300 and thus can adjust the difficulty in balancing the wobble board 850. Specifically, the platform 100 can be rotated by the user to adjust the level of compression of the compressible member 300. As the platform 100 is rotated, the threaded member 480 rotates with respect to the threaded shank 435. As the platform 100 is raised or lowered, the level of compression of the compressible member 300 is adjusted. The machine screw 880 and washer 885 ensure that the platform 100 is not rotated so far that it disconnects from the base 200. Similar to wobble board 50, the wobble board 850 may be adjusted by rotating the platform 100 by hand or while the user is standing thereon.

[0094] Turning now to Figures 25A and 25B, another embodiment of a wobble board is shown and is generally identified by reference numeral 950. Wobble board 950 is generally identical to that of wobble board 850 with the following exception. In this embodiment, the cap 970 is removable and thereby provides access to the various components of the wobble board. The cap 970 may be held in place via friction (see Figure 25A) and may be readily be removed by the user (see Figure 25B). In another embodiment, the cap 970 may be threadably connected to the platform and may be removed by rotating it in a direction. In another embodiment, the cap 970 may be connected to the platform using a bayonet mount. By providing access to the various components of the wobble board 950, additional components such as for example sensors, etc. may be added to the wobble board 950 as desired by the user.

[0095] Although in embodiments the limit as to how much the platform can pivot with respect to the base is defined by a support surface on which the wobble board is placed on, in another embodiment the limit as to how much the platform can pivot with respect to the base may be defined by a feature on the base. In this embodiment, the feature is connected to the base and in positioned such that it interferes with movement of the platform as it pivots with respect to the base. Put another way, the platform 100 can only pivot with respect to the base 200 until a portion of the platform 100 contacts the feature on the base, thereby inhibiting further pivot.

[0096] Although in embodiments the platform is described as being generally annular shaped, those skilled in the art will appreciate that alternatives are available. For example, in another embodiment the platform may be shaped like a surfboard or a snowboard and thus can be used for athletic training purposes. [0097] In another embodiment of a wobble board, a layer of high friction or gripping material may be placed on the platform for safety purposes to reduce the likelihood of a user slipping. The platform may comprise printed matter such as instructions or arrows to guide the user on how to transition between use mode and adjustment mode. In another embodiment, a layer of compressible material such as for example rubber or foam may be placed atop the platform for comfort. In another embodiment, a layer of textured material such as for example corrugated rubber or foam may be placed atop the platform. In another embodiment, the wobble board may be positioned such that the platform is flush with a surrounding foam mat.

[0098] In another embodiment of a wobble board, the base may include one or more adjustable feet or screws to ensure the wobble board lays flat on an otherwise uneven support surface.

[0099] In another embodiment of a wobble board, the compressible member may be replaceable. In this embodiment, the compressible member may be replaced with a compressible member having a different range of compression or elasticity. This will further allow the user to increase or decrease the difficulty of the wobble board.

[0100] In another embodiment, more than one compressible member may be used.

[0101] Although in embodiments above the compressible member is described as being generally frustoconical shaped, those skilled in the art would appreciate that the

compressible member may be of another shape such as for example cylindrical shaped, annular shaped, etc.

[0102] Although in embodiments above the compressible member is described as being made of a resilient material such as rubber or elastomer, those skilled in the art would appreciate that the compressible member may be made of other materials such as for example foam. In another embodiment, the compressible member may be made of an expandable material filled with fluid. In another embodiment, the compressible member may be made of metal having a number of spring-like members. In another embodiment, the compressible member may be a large coil spring or a disc spring. In another embodiment, the compressible member may be one or more discrete air springs.

[0103] Although in embodiments, the compressible member is described as expanding radially in response to an axial force applied thereto, those skilled in the art will appreciate that alternatives are available. For example, in another embodiment the compressible member may compress axially. In another embodiment, the compressible member may compress axially and expand radially.

[0104] In another embodiment of a wobble board, the locking mechanism may comprise a button used to switch between use and adjustment modes.

[0105] Although in embodiments above the fasteners are described as being in the form of a screw, those skilled in the art will appreciate that any type of fastener may be used. [0106] Although in embodiments above the platform and base are described as being generally annular shaped, those skilled in the art will appreciate that the platform and base may be other shapes such as for example square shaped, rectangular shaped, octagonal shaped, etc.

[0107] Although in embodiments the wobble board is described as having an interlock spring used to exert a generally upward force on the interlock disc, those skilled in the art will appreciate that alternatives are available. For example, in another embodiment, the interlock spring may be replaced with a foam washer.

[0108] Although in embodiments the interlock disc is described as comprising projections is in the shape of a curved-ramp and the interlock trigger plate is described as comprising inclined grooves, those skilled in the art would appreciate that alternatives are available. For example, in another embodiment, the projections may be small nubs extending from the top surface of the interlock disc and configured to travel along the inclined grooves of the interlock trigger plate.

[0109] Although in embodiments ball bearings are used, those skilled in the art will appreciate that alternatives are available such as for example low friction washers.

[0110] Other aspects of the subject invention are exemplified in the following clauses:

A1. A wobble board comprising:

a platform;

a base having a generally flat bottom surface; and

at least one compressible member positioned intermediate the platform and the base such that the platform is pivotable with respect to the base.

A2.1. The wobble board of clause A1 wherein the at least one compressible member compresses in response to an axial force being applied thereto.

A2.2. The wobble board of clause A2.1 , further comprising an adjustment mechanism configured to adjust a level of compression of the at least one compressible member.

A3. The wobble board of clause A2.2, wherein the axial force is at least partially from the adjustment mechanism.

A4. The wobble board of clause A2.2 wherein the adjustment mechanism comprises a threaded member connecting the platform to the base. A5. The wobble board of clause A4 wherein rotation of the platform relative to the base via the threaded member adjusts the level of compression of the at least one compressible member.

A6. The wobble board of clause A5 wherein the wobble board is operable in a single mode.

A7. The wobble board of clause A5 further comprising a locking mechanism configured to set the wobble board in use mode or adjustment mode.

A8. The wobble board of clause A7 wherein in a first position, the locking mechanism sets the wobble board to use mode, and in a second position, the locking mechanism sets the wobble board to adjustment mode.

A9. The wobble board of clause A8 wherein the locking mechanism is rotatable between the first and second positions.

A10. The wobble board of clause A9 wherein the locking mechanism is positioned on a top surface of the platform.

A11. The wobble board of clause A9 wherein the locking mechanism comprises:

an interlocking plate positioned on the top surface of the platform and comprising at least one inclined groove; and

a disc comprising a plurality of teeth positioned within an opening of the platform adjacent the interlocking plate, the disc having at least one locking member projecting from a surface thereof.

A12. The wobble board of clause A11 , wherein in the first position, the locking member is positioned within the inclined groove at a lowest point thereof, and in the second position the locking member is positioned within the inclined groove at a highest position thereof.

A13. The wobble board of clause A2.2 wherein the greater the level of compression of the at least one compressible member the less range of pivot the platform has relative to the base.

A14. The wobble board of clause A2.1 , wherein the axial force is at least partially from a force being applied to a top surface of the platform. A15. The wobble board of clause A14, wherein the force applied to the top surface of the platform is from a user standing on the platform.

A16. The wobble board of any one of clauses A1 to A15, wherein the base is positioned on a support surface, the support defining a pivot limit of the platform.

A17. The wobble board of clause A16, wherein at least a portion of the platform is in contact with the support surface when at the pivot limit.

A18. The wobble board of any one of clauses A1 to A17 wherein the at least one compressible member is made of one of an elastic material, a rubber material and a foam material.

A19. The wobble board of any one of clauses A1 to A18 wherein the at least one compressible member has a rounded top surface.

A20. The wobble board of any one of clauses A1 to A19 wherein the at least one compressible member compresses axially.

A21. The wobble board of any one of clauses A1 to A20 wherein the at least one compressible member expands radially when compressed axially.

B1. A method of adjusting a wobble board comprising:

providing a platform, a base, at least one compressible member positioned intermediate the platform and the base, and an adjustment mechanism comprising a threaded member connecting the platform to the base;

rotating the platform relative to the base such that the platform is raised or lowered with respect to the base via threaded member thereby adjusting a level of compression of the compressible member.

B2. The method of clause B1 wherein rotating the platform relative to the base in a first direction raises the platform with respect to the base and in a second direction lowers the platform with respect to the base.

B3. The method of clause B1 wherein rotating the platform relative to the base such that the platform is lowered with respect to the base decreases a difficulty of use of the wobble board. B4. The method of clause B1 wherein rotating the platform relative to the base such that the platform is raised with respect to the base increases a difficulty of use of the wobble board.

C1. A wobble board comprising:

a platform;

a base having a generally flat bottom surface; and

at least one compressible member positioned intermediate the platform and the base such that the platform is pivotable with respect to the base, the at least one compressible member configured to compress in response to an axial force being applied thereto;

an adjustment mechanism comprising at least one threaded member connecting the platform to the base such that the platform is rotatable with respect to the base, wherein rotation of the platform in a first direction raises the platform with respect to the base and rotation of the platform in a second direction lowers the platform with respect to the base; wherein a level of compression of the at least one compressible member increases when the platform is lowered with respect to the base thereby decreasing a difficulty of use of the wobble board and decreases when the platform is raised with respect to the base thereby increasing a difficulty of use of the wobble board.

C2. The wobble board of clause C1 wherein the at least one threaded member extends through an opening in the compressible member.

C3. The wobble board of clause C1 wherein the at least one compressible member is made of a rubber material.

C4. The wobble board of clause C1 further comprising at least one sensor obtaining sensor data associated with at least one of a level of compression of the compressible member and movement of the wobble board.

C5. The wobble board of clause C1 wherein the at least one compressible member is made of one of an elastic material, a rubber material and a foam material.

C6. The wobble board of clause C1 wherein the at least one compressible member has a rounded top surface.

C7. The wobble board of clause C1 wherein the at least one compressible member compresses axially. C8. The wobble board of clause C1 wherein the at least one compressible member expands radially when compressed axially.

[0111] Although embodiments have been described above with reference to the accompanying drawings, those of skill in the art will appreciate that variations and modifications may be made without departing from the scope thereof as defined by the appended claims.