# US 9,750,980 B1 · Self-contained transformable balance board > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,750,980 B1 - Document ID: US9750980B1 - Status: Granted - Kind: B1 - Application number: 15/586,612 - Filed: 2017-05-04 - Granted: 2017-09-05 - Earliest claimed: 2017-05-04 - Applicants: Kevin Khalili - Inventors: Kevin Khalili - Web page: https://patentgrep.com/patent/US9750980B1 ## CPC - A63B 26/003: {for improving balance or equilibrium (balance beams A63B4/00; apparatus for rope dancing A63B7/08; balancing drums, balancing boards or the like A63B22/16)} - A63B 21/0004: {Exercising devices moving as a whole during exercise (bar bells or dumb bells A63B21/072; on wheels A63B22/20)} - A63B 22/18: with elements, {i.e. platforms,} having a circulating, {nutating} or rotating movement, generated by oscillating movement of the user, {e.g. platforms wobbling on a centrally arranged spherical support}(hoop exercising apparatus A63B19/00; {eccentric weights put into orbital motion by nutating movement of the user A63B21/0608; pots rotating or rocking by moving the whole body A63G23/00}) - A63B 22/20: using rollers, wheels, castors or the like, {e.g. gliding means,} to be moved over the floor or other surface, {e.g. guide tracks,} during exercising - A63B 23/1236: {Push-ups in horizontal position, i.e. eccentric movement} - A63B 71/0036: {Accessories for stowing, putting away or transporting exercise apparatus or sports equipment (A63B47/00, A63B55/00, A63B60/56 take precedence)} - A63B 2023/0411: {Squatting exercises} - A63B 2209/08: magnetic - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A transformable balance board that may be alternately used as a balance board or wobble platform and a wheeled board or roller platform. The balance board includes a rigid platform preferably covered with a closed-cell yielding foam pad layer on top on which a user can support his or her weight. When used as a wobble platform, a relatively large central fulcrum member extends down from the rigid platform so that the board wobbles with no stable horizontal position. In a second usage configuration as a wheeled board or roller platform a plurality of sturdy wheels or rollers retracted into the underside of the rigid platform are extended vertically downward from their retracted positions. Because the vertical height of the wheels is greater than the vertical height of the fulcrum member below the rigid platform, the wheels make contact with the ground and the fulcrum is lifted up and out of contact with the floor below. ## Claims ### Claim 1 A transformable balance board for use on a support surface, comprising: an upper platform constructed of a rigid material that will support the weight of an adult without flexing, the platform having an upper surface and a lower surface; a fulcrum member attached to and projecting downward from the lower surface of the platform, the fulcrum member extending beyond the lower surface to a fulcrum height; and at least three retractable wheels mounted to the lower surface of the platform and surrounding the fulcrum member, the wheels having a retracted configuration wherein no part of the wheels extends beyond the lower surface past the fulcrum height, and an extended configuration wherein each of the wheels extends beyond the lower surface past the fulcrum height to a wheel height such that when all of the wheels are extended and in contact with a support surface the fulcrum member is spaced from the support surface. ### Claim 2 (depends on 1) The transformable balance board of claim 1, wherein each retractable wheel includes rollers journaled for rotation at a distal end of a shaft, and wherein in the extended configuration the shaft is held perpendicular to the lower surface in a support member mounted to the lower surface of the platform and the shaft is secured parallel to the lower surface in the retracted configuration. ### Claim 3 (depends on 2) The transformable balance board of claim 2, further including a tether connecting each retractable wheel to the lower surface of the platform, the tether passing into the support member. ### Claim 4 (depends on 2) The transformable balance board of claim 2, further including a plurality of shaped recesses provided in the lower surface of the platform each of which receives a retractable wheel in the retracted configuration. ### Claim 5 (depends on 4) The transformable balance board of claim 4, wherein the upper platform is circular and the shaped recesses are aligned along chordal lines relative to the upper platform. ### Claim 6 (depends on 1) The transformable balance board of claim 1, further including a closed-cell yielding foam pad layered onto the upper surface of the upper platform and having a thickness of at least 8 millimeter. ### Claim 7 (depends on 1) The transformable balance board of claim 1, wherein the balance board is a completely self-contained, integrated assembly without any separate pieces or attachments for ease of function and portability. ### Claim 8 A transformable balance board for use on a support surface, comprising: an upper platform constructed of a rigid material that will support the weight of an adult without flexing, the platform having an upper surface and a lower surface; a fulcrum member attached to and projecting downward from the lower surface of the platform; and four retractable wheels mounted to the lower surface of the platform and evenly surrounding the fulcrum member, a tether connecting each retractable wheel to the lower surface of the platform, wherein in an extended configuration each retractable wheel extends farther away from the lower surface than the fulcrum, and in a retracted configuration each retractable wheel is secured parallel to and under the lower surface, wherein the balance board is a completely self-contained, integrated assembly without any separate pieces or attachments for ease of function and portability. ### Claim 9 (depends on 8) The transformable balance board of claim 8, further including a plurality of shaped recesses provided in the lower surface of the platform each of which receives a retractable wheel in the retracted configuration. ### Claim 10 (depends on 8) The transformable balance board of claim 8, wherein each retractable wheel includes rollers journaled for rotation at a distal end of a shaft, and wherein in the extended configuration the shaft is held perpendicular to the lower surface in a support member mounted to the lower surface of the platform. ### Claim 11 (depends on 10) The transformable balance board of claim 10, further including a tether connecting each retractable wheel to the lower surface of the platform, the tether passing into the support member. ### Claim 12 (depends on 11) The transformable balance board of claim 11, wherein the support members each comprise a cup-shaped member with an axial slot on one side through which the tether for an associated retractable wheel passes when the retractable wheel is in its retracted configuration. ### Claim 13 (depends on 8) The transformable balance board of claim 8, further including a plurality of shaped recesses provided in the lower surface of the platform each of which receives a retractable wheel in the retracted configuration. ### Claim 14 (depends on 8) The transformable balance board of claim 8, further including a closed-cell yielding foam pad layered onto the upper surface of the upper platform and having a thickness of at least 8 millimeter. ### Claim 15 A transformable balance board for use on a support surface, comprising: an upper platform constructed of a rigid material that will support the weight of an adult without flexing, the platform having an upper surface and a lower surface; a central fulcrum member attached to and projecting downward from the lower surface of the platform; and a plurality of retractable wheels integrated into the platform and evenly surrounding the fulcrum member, the retractable wheels having a first usage configuration wherein the wheels are retracted and the balance board functions as a wobble platform with the fulcrum member in contact with a support surface, the retractable wheels having a second usage configuration wherein the wheels are extended into contact with the support surface and the balance board functions as a wheeled board; wherein the balance board is a completely self-contained, integrated assembly without any separate pieces or attachments for ease of function and portability. ### Claim 16 (depends on 15) The transformable balance board of claim 15, wherein each retractable wheel includes rollers journaled for rotation at a distal end of a shaft, and wherein in the extended configuration the shaft is held perpendicular to the lower surface in a support member mounted to the lower surface of the platform and the shaft is secured parallel to the lower surface in the first usage configuration. ### Claim 17 (depends on 16) The transformable balance board of claim 16, further including a tether connecting each retractable wheel to the lower surface of the platform, the tether passing into the support member. ### Claim 18 (depends on 16) The transformable balance board of claim 16, further including a plurality of shaped recesses provided in the lower surface of the platform each of which receives a retractable wheel in the first usage configuration. ### Claim 19 (depends on 18) The transformable balance board of claim 18, wherein the upper platform is circular and the shaped recesses are aligned along chordal lines relative to the upper platform. ### Claim 20 (depends on 15) The transformable balance board of claim 15, further including a closed-cell yielding foam pad layered onto the upper surface of the upper platform and having a thickness of at least 8 millimeter.