# US 12,214,245 B2 · Dynamic exercise device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,245 B2 - Document ID: US12214245B2 - Status: Granted - Kind: B2 - Application number: 18/142,002 - Filed: 2023-05-01 - Published: 2023-08-24 - Granted: 2025-02-04 - Earliest claimed: 2021-02-10 - Assignees: C. John Cotton - Applicants: C. John Cotton - Inventors: C. John Cotton - Web page: https://patentgrep.com/patent/US12214245B2 ## CPC - A63B 21/4035: {for operation by hand} - A63B 21/4049: {Rotational movement} - A63B 23/1236: {Push-ups in horizontal position, i.e. eccentric movement} - A63B 21/00181: {comprising additional means assisting the user to overcome part of the resisting force, i.e. assisted-active exercising} - A63B 21/0428: {the ends moving relatively by linear reciprocation} - A63B 21/0552: {Elastic ropes or bands} - 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 2071/0072: {Limiting the applied force, torque, movement or speed} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A dynamic exercise device having a hand grip mounted in an inner ring, the inner ring mounted in an outer ring, and the outer ring mounted in a base. The inner ring, outer ring and base are each movable in at least one degree of freedom relative to each of the others. The base further includes a first support strut, a second support strut, and a bridge member interconnecting the first and second support struts and having a planar surface-engaging face configured to engage a surface on or against which the exercise device is used. ## Claims ### Claim 1 An exercise device comprising: a base including a first support strut, a second support strut, and a bridge member interconnecting the first and second support struts and having a planar surface-engaging face configured to engage a surface on or against which the exercise device is used; and a handle having a first end and a second end opposite to said first end, a grip, an inner ring in which the grip is rotatably mounted, and an outer ring in which the inner ring is rotatably mounted, the handle being rotatably coupled to the base via a first bearing at the first end of the handle and a second bearing at the second end of the handle; wherein the first bearing and the second bearing of the handle define a first axis about which the handle is configured to rotate relative to the base, the first axis being parallel with the surface; wherein at least one of the first bearing and the second bearing comprises an adjustment element configured to selectively limit a degree of rotation of the handle about the first axis; and wherein one of the inner ring and the outer ring comprises an annular rail which is captive within a slot formed in the other of the inner ring and the outer ring, the annular rail being sized to slide freely around the slot about a second axis. ### Claim 2 (depends on 1) The exercise device of claim 1, wherein the inner ring rotates in the outer ring about the second axis which is perpendicular to the first axis. ### Claim 3 (depends on 2) The exercise device of claim 2, wherein the inner ring comprises a second adjustment element which limits a degree of rotation of the grip about the second axis. ### Claim 4 (depends on 1) The exercise device of claim 1, further comprising a stand which supports the base, the base being mounted in the stand. ### Claim 5 (depends on 4) The exercise device of claim 4, wherein the stand includes a recess which opens into a channel, wherein the recess and the channel are sized to cooperatively receive the first and second support struts of the base. ### Claim 6 (depends on 4) The exercise device of claim 4, wherein the stand includes a plurality of rotatable elements which are configured to engage the surface and facilitate movement of the exercise device over the surface. ### Claim 7 (depends on 6) The exercise device of claim 6, wherein the plurality of rotatable elements are selected from the group consisting of wheels, ball rollers and castors. ### Claim 8 (depends on 1) The exercise device of claim 1, wherein the annular rail has a substantially planar, uniform cross section. ### Claim 9 (depends on 8) The exercise device of claim 8, wherein the recess and the channel are sized is rectangular. ### Claim 10 (depends on 1) The exercise device of claim 1, wherein the annular rail includes a support face on a lowermost surface of the annular rail. ### Claim 11 (depends on 1) The exercise device of claim 1, further comprising a web, the web configured to join the annular rail to a remainder of the base, and to the first and second support struts. ### Claim 12 An exercise device comprising: a base including a first support strut, a second support strut, and a bridge member interconnecting the first and second support struts and having a planar surface-engaging face configured to engage a surface on or against which the exercise device is used; and a handle having a first end and a second end opposite to said first end, a grip, an inner ring in which the grip is rotatably mounted, and an outer ring in which the inner ring is rotatably mounted, the handle being rotatably coupled to the base via a first bearing at the first end of the handle and a second bearing at the second end of the handle; wherein the first bearing and the second bearing of the handle define a first axis about which the handle is configured to rotate relative to the base, the first axis being parallel with the surface; wherein at least one of the first bearing and the second bearing comprises a first adjustment element configured to selectively limit a degree of rotation of the handle about the first axis; wherein the inner ring rotates in the outer ring about a second axis which is perpendicular to the first axis; wherein one of the inner ring and the outer ring comprises an annular rail which is captive within a slot formed in the other of the inner ring and the outer ring, the annular rail being sized to slide freely around the slot about the second axis; and wherein the inner ring comprises a second adjustment element which limits a degree of rotation of the grip about the second axis. ### Claim 13 (depends on 12) The exercise device of claim 12, further comprising a stand which supports the base, the base being mounted in the stand. ### Claim 14 (depends on 13) The exercise device of claim 13, wherein the stand includes a recess which opens into a channel, wherein the substantially planar, uniform cross section of the annular rail to cooperatively receive the first and second support struts of the base. ### Claim 15 (depends on 12) The exercise device of claim 12, wherein the annular rail includes a support face on a lowermost surface of the annular rail. ### Claim 16 (depends on 12) The exercise device of claim 12, further comprising a web, the web configured to join the annular rail to a remainder of the base, and to the first and second support struts. ### Claim 17 An exercise device comprising: a base including a first support strut, a second support strut, and a bridge member interconnecting the first and second support struts and having a planar surface-engaging face configured to engage a surface on or against which the exercise device is used; a handle having a first end and a second end opposite to said first end, a grip, an inner ring in which the grip is rotatably mounted, and an outer ring in which the inner ring is rotatably mounted, the handle being rotatably coupled to the base via a first bearing at the first end of the handle and a second bearing at the second end of the handle; and a web, the web configured to join an annular rail to a remainder of the base, and to the first and second support struts; wherein the first bearing and the second bearing of the handle define a first axis about which the handle is configured to rotate relative to the base, the first axis being parallel with the surface; wherein at least one of the first bearing and the second bearing comprises an adjustment element configured to selectively limit a degree of rotation of the handle about the first axis; and wherein one of the inner ring and the outer ring comprises an annular rail which is captive within a slot formed in the other of the inner ring and the outer ring, the annular rail being sized to slide freely around the slot about a second axis. ### Claim 18 (depends on 17) The exercise device of claim 17, wherein the inner ring rotates in the outer ring about the second axis which is perpendicular to the first axis, and wherein the inner ring comprises a second adjustment element which limits a degree of rotation of the grip about the second axis.