# US 11,896,865 B2 · Inertial device and method of implementing an inertial device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,865 B2 - Document ID: US11896865B2 - Status: Granted - Kind: B2 - Application number: 17/992,422 - Filed: 2022-11-22 - Published: 2023-06-22 - Granted: 2024-02-13 - Earliest claimed: 2020-05-12 - Applicants: Peter Hamady - Inventors: Peter Hamady - Web page: https://patentgrep.com/patent/US11896865B2 ## CPC - A63B 21/0618: {moving in a horizontal plane without substantial friction, i.e. using inertial forces} - A63B 21/0726: {Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends} - A63B 21/0004: {Exercising devices moving as a whole during exercise (bar bells or dumb bells A63B21/072; on wheels A63B22/20)} - A63B 21/0608: {Eccentric weights put into orbital motion by nutating movement of the user} - A63B 21/22: Resisting devices with rotary bodies {(A63B21/0608 takes precedence)} - A63B 21/4035: {for operation by hand} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A apparatus or system defined by a handheld exercise device that includes a weighted body; a handle arranged along a radial axis of the weighted body; and a connector that creates at least one connection between each radially distal end of the handle and a component of the weighted body. The handheld exercise device, in use, minimizes one or more peak forces and rotational inertia acting on a forearm of a user actively engaging the handheld exercise device in motion. ## Claims ### Claim 1 A handheld exercise device comprising: an elastically deformable body comprising a hollow tubular structure defining a closed loop interior, the elastically deformable body defining a through hole, wherein the elastically deformable body is configured to receive within the hollow tubular structure a mass movable along the closed loop interior; and a handle positioned in the through hole and connected to the elastically deformable body, the handle configured to be grasped by a user, wherein the elastically deformable body is configured to deform in response to a force applied to the handheld exercise device by the user. ### Claim 2 (depends on 1) The handheld exercise device of claim 1, wherein: the handle extends along a first axis; and the mass is rotatable along the closed loop interior about a second axis perpendicular to the first axis. ### Claim 3 (depends on 2) The handheld exercise device of claim 2, wherein: the elastically deformable body comprises an inner surface and an outer surface, the inner surface being parallel to the second axis, and the outer surface being curved relative to the second axis. ### Claim 4 (depends on 2) The handheld exercise device of claim 2, wherein at least part of the elastically deformable body is configured to deflect from a first position relative to the handle to a second position relative to the handle in response to the force applied by the user, the first position offset relative to the handle in a first direction along the second axis, and the second position offset relative to the handle in a second direction along the second axis. ### Claim 5 (depends on 1) The handheld exercise device of claim 1, wherein the elastically deformable body comprises a plurality of interconnected components to form the elastically deformable body. ### Claim 6 (depends on 1) The handheld exercise device of claim 1, wherein the handle comprises a plurality of ridges spaced apart along at least a portion of a surface of the handle. ### Claim 7 (depends on 1) The handheld exercise device of claim 1, wherein the elastically deformable body is configured to deform from a first cross-sectional shape to a second cross-sectional shape in response to the force applied to the handheld exercise device by the user. ### Claim 8 (depends on 1) The handheld exercise device of claim 1, wherein the elastically deformable body comprises: a first state in which the elastically deformable body is not deflected relative to the handle; a second state in which a portion of the elastically deformable body is deflected relative to the handle in a first direction; and a third state in which the portion of the elastically deformable body is deflected relative to the handle in a second direction opposite the first direction. ### Claim 9 (depends on 1) The handheld exercise device of claim 1, wherein: the elastically deformable body is configured such that the mass received within the hollow tubular structure moves along the closed loop interior in response to a torque applied to the handheld exercise device by the user. ### Claim 10 (depends on 1) The handheld exercise device of claim 1, wherein: the handle is configured to be grasped by the user to allow the user to move the handheld exercise device in a punching motion in which the force is applied to the handheld exercise device and a torque is applied to the handheld exercise device; and the elastically deformable body is configured such that the elastically deformable body deforms in response to the force applied to the handheld exercise device in the punching motion and the mass received within the hollow tubular structure moves along the closed loop interior in response to the torque applied to the handheld exercise device in the punching motion. ### Claim 11 (depends on 1) The handheld exercise device of claim 1, wherein: the elastically deformable body comprises one or more elastic devices configured to flex in response to the force. ### Claim 12 (depends on 11) The handheld exercise device of claim 11, wherein the one or more elastic devices are one or more elastic hoops. ### Claim 13 (depends on 1) The handheld exercise device of claim 1, further comprising: the mass, the mass comprising at least one mass selected from the group consisting of: a fluid, a solid mass, a ball, a grain, a granular element, or a ring. ### Claim 14 (depends on 1) The handheld exercise device of claim 1, comprising: an elastic element configured to allow relative movement between the handle and a portion of the elastically deformable body. ### Claim 15 (depends on 1) The handheld exercise device of claim 1, wherein: the handle is connected to the elastically deformable body at at least two locations along the elastically deformable body. ### Claim 16 (depends on 1) The handheld exercise device of claim 1, wherein the handle is fixedly connected to a portion of the body. ### Claim 17 A handheld exercise device comprising: a body comprising a hollow tubular structure defining a closed loop interior, the body defining a through hole, wherein the body is configured to receive within the hollow tubular structure a mass movable along the closed loop interior; and a handle positioned in the through hole and connected to the body, the handle configured to be grasped by a user, wherein the body comprises: a first state in which the body is not deflected relative to the handle; a second state in which a portion of the body is deflected relative to the handle in a first direction; and a third state in which the portion of the body is deflected relative to the handle in a second direction opposite the first direction. ### Claim 18 (depends on 17) The handheld exercise device of claim 17, wherein: the body is configured to move from the first state to the second state or from the first state to the third state in response to a force applied to the handheld exercise device by the user. ### Claim 19 (depends on 18) The handheld exercise device of claim 18, wherein: the body is configured to deform from a first cross-sectional shape to a second cross-sectional shape in response to the force applied to the handheld exercise device by the user. ### Claim 20 (depends on 17) The handheld exercise device of claim 17, wherein: the handle extends along a first axis; and the mass is rotatable along the closed loop interior about a second axis perpendicular to the first axis.