# US 2025/0082992 A1 · Leg Training Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0082992 A1 - Document ID: US20250082992A1 - Status: Published application - Kind: A1 - Application number: 18/955,928 - Filed: 2024-11-21 - Published: 2025-03-13 - Earliest claimed: 2024-11-21 - Inventors: Zhong YIN - Web page: https://patentgrep.com/patent/US20250082992A1 ## CPC - A63B 23/04: for lower limbs {(training appliances for special sports A63B69/00; for the purpose of producing mechanical power F03G5/00)} - A63B 2208/0233: in 90/90 position, like on a chair - A63B 2225/09: Adjustable dimensions - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A leg training device comprises a support frame and a seat installed on the support frame, wherein a leg exercise component and a counterweight bearer are further provided on the support frame, and a load transfer component for transferring a load is provided between the leg exercise component and the counterweight bearer; the load transfer component comprises a connecting element and a guiding element; at least two ends of the connecting element are respectively attached to the leg exercise component and the counterweight bearer. ## Claims ### Claim 1 A leg training device comprising a support frame and a seat mounted on the support frame, wherein the support frame is further provided with a leg exercise component and a counterweight bearer, and the counterweight bearer is rotatably disposed on the support frame; and a load transfer component for transferring a load is provided between the leg exercise component and the counterweight bearer; the load transfer component comprises a connecting element and a guiding element; at least two ends of the connecting element are respectively attached to the leg exercise component and the counterweight bearer; and the connecting element bypasses the guiding element, constantly transfers a weight of the counterweight bearer to the leg exercise component, and simultaneously pulls the counterweight bearer to turn over. ### Claim 2 (depends on 1) The leg training device according to claim 1, wherein the leg exercise component comprises a roller pad, a link mechanism and an adjusting mechanism, and both the link mechanism and the adjusting mechanism are rotatably disposed on the support frame. ### Claim 3 (depends on 2) The leg training device according to claim 2, wherein the link mechanism is detachably connected to the adjusting mechanism, the roller pad is connected to the link mechanism and located at a front side of the seat, and one end of the connecting element is fixedly connected to the adjusting mechanism. ### Claim 4 (depends on 3) The leg training device according to claim 3, wherein the adjusting mechanism comprises an adjusting disc, a rotating shaft and a plurality of first bearings, wherein the rotating shaft is connected to the support frame, the plurality of first bearings are sleeved on the rotating shaft, and the adjusting disc is sleeved on the plurality of first bearings. ### Claim 5 (depends on 4) The leg training device according to claim 4, wherein the link mechanism is detachably connected to the adjusting disc, and the load transfer component is fixedly connected to the adjusting disc. ### Claim 6 (depends on 5) The leg training device according to claim 5, wherein a plurality of second bearings are sleeved on the rotating shaft, and the link mechanism is sleeved on the plurality of second bearings. ### Claim 7 (depends on 6) The leg training device according to claim 6, wherein the link mechanism comprises a first rod, a second rod and a bolt; the roller pad is connected to the first rod, the first rod is connected to the second rod, the second rod is sleeved on the plurality of second bearings, and the bolt penetrates the second rod and is inserted into the adjusting disc. ### Claim 8 (depends on 7) The leg training device according to claim 7, wherein the adjusting disc is provided with a plurality of spaced adjusting holes, and the bolt is insertable into any of the adjusting holes. ### Claim 9 (depends on 1) The leg training device according to claim 1, wherein the connecting element is a rope, and the guiding element is a guide wheel; the guide wheel is provided on the support frame, and the rope is wound around the guide wheel; one end of the rope is connected to the counterweight bearer, and the other end of the rope is connected to the leg exercise component. ### Claim 10 A leg training device, comprising a support frame and a seat mounted on the support frame, wherein the support frame is further provided with a leg exercise component and a counterweight bearer, and the counterweight bearer is rotatably provided on the support frame; and a load transfer component for transferring a load is provided between the leg exercise component and the counterweight bearer; the load transfer component comprises a rope and a guide wheel; the guide wheel is provided on a support frame, and the rope passes through a wheel groove of the guide wheel and is divided into two parts; and the two parts of the rope are respectively attached to the leg exercise component and the counterweight bearer; and the two parts of the rope constitute a 1:1 transmission, and the rope is capable of pulling the counterweight bearer to turn over. ### Claim 11 (depends on 10) The leg training device according to claim 10, wherein the support frame is provided with a fixed seat, and the counterweight bearer can be supported on the fixed seat. ### Claim 12 (depends on 10) The leg training device according to claim 10, wherein the support frame comprises a bottom frame and an inclined frame; the inclined frame is obliquely provided on the bottom frame, and the leg exercise component, the load transfer component and the counterweight bearer are all provided at a top end of the inclined frame. ### Claim 13 (depends on 10) The leg training device according to claim 10, wherein the seat comprises a seat cushion and a back cushion; one side of the back cushion is rotatably provided on the support frame, and the seat cushion is connected to the other side of the back cushion. ### Claim 14 A leg training device comprising a support frame and a seat mounted on the support frame, wherein the support frame is further provided with a leg exercise component and a counterweight bearer, and the counterweight bearer is rotatably disposed on the support frame; and a load transfer component for transferring a load is provided between the leg exercise component and the counterweight bearer; and the load transfer component comprises a pulley transmission mechanism, and the pulley transmission mechanism is used for constantly transferring a load of the counterweight bearer to the leg exercise component; and the pulley transmission mechanism is capable of pulling the counterweight bearer to turn over. ### Claim 15 (depends on 14) The leg training device according to claim 14, wherein the pulley transmission mechanism comprises a rope and a guide wheel. ### Claim 16 (depends on 15) The leg training device according to claim 15, wherein the guide wheel is provided on the support frame, and the rope passes through a wheel groove of the guide wheel and is divided into two parts. ### Claim 17 (depends on 16) The leg training device according to claim 16, wherein the two parts of the rope are respectively attached to the leg exercise component and the counterweight bearer. ### Claim 18 (depends on 17) The leg training device according to claim 17, wherein the two parts of the rope constitute a 1:1 transmission.