# US 5,702,329 A · Exercise apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,702,329 A - Document ID: US5702329A - Status: Granted - Kind: A - Application number: 08/621,291 - Filed: 1996-03-21 - Granted: 1997-12-30 - Earliest claimed: 1995-06-07 - Assignees: Jam'n Fitness Corp. - Inventors: Larry Koenig - Web page: https://patentgrep.com/patent/US5702329A ## CPC - A63B 23/0405: {involving a bending of the knee and hip joints simultaneously (A63B23/0476 takes precedence)} - A63B 21/0615: {pivoting about a fixed horizontal fulcrum} - A63B 21/0626: {with substantially vertical guiding means} - A63B 21/4047: {Pivoting movement (weight pivoting A63B21/0615)} - A63B 2023/0411: {Squatting exercises} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract Exercise apparatus for strengthening the legs and hips of a user. A weight carrying pivot arm rides up and down a pivotable mast when the user squats and rises, causing the resistance of the apparatus to increase as the user approaches a standing position. An optional toe plate may be added to allow exercise of ankle and foot structures. ## Claims ### Claim 1 Exercise apparatus comprising a base having a first end and a second end, an upstanding bar mounted upon the second end of said base, an upwardly extending mast pivotably mounted to the base between said first and second ends thereof, the upstanding bar having an elongate pivot arm pivotably mounted thereto, the pivot arm pivotable in a vertical plane, said pivot arm having a free end opposing its attachment to said upstanding bar, said free end of said pivot arm provided with a head member engaged with said mast and movable therealong, user engagement means mounted to said head member, said pivot arm having an elongate arm mounted thereto and depending therebeneath, means for suspending weights from said elongate arm, seat means associated with said base. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein said pivot arm has an extension extending from its attachment to said upstanding bar, biasing means urges said extension of said pivot arm toward said base. ### Claim 3 (depends on 2) The apparatus of claim 2 wherein said biasing means counterbalances said head member along said mast when said head member is at a lower position along said mast. ### Claim 4 (depends on 2) The apparatus of claim 2 wherein said biasing means comprises a coil spring in tension. ### Claim 5 (depends on 4) The apparatus of claim 4 wherein said coil spring is interconnected between said extension and said upstanding arm. ### Claim 6 (depends on 5) The apparatus of claim 5 wherein said coil spring has an axis parallel to the axis of said upstanding arm. ### Claim 7 (depends on 1) The apparatus of claim 1 wherein said upstanding bar is disposed to said base at an acute angle. ### Claim 8 (depends on 1) The apparatus of claim 1 wherein the seat means is disposed upon said first end of said base, said user engagement means comprises a pair of spaced apart handlebars disposed generally above said seat means. ### Claim 9 (depends on 1) The apparatus of claim 1 wherein said head member is pivotable upon said pivot arm. ### Claim 10 (depends on 1) The apparatus of claim 1 wherein said head member comprises a pair of spaced apart plates pivotably mounted to said pivot arm, said plates are disposed on opposing sides of said mast, said plates have rollers mounted thereon which engage said mast on opposing sides thereof, said plates are interconnected by a plurality of roller bearings, said roller bearings are engaged with said mast. ### Claim 11 (depends on 1) The apparatus of claim 1 wherein said elongate arm is inclined from said pivot arm at an angle of 65.+-.5 degrees. ### Claim 12 (depends on 1) The apparatus of claim 1 wherein said mast has a stop element therealong, said head member is movable along said mast above said stop element. ### Claim 13 (depends on 1) The apparatus of claim 1 wherein said seat means comprises a seat mounted to a pedestal, said pedestal is mounted to said base. ### Claim 14 (depends on 13) The apparatus of claim 13 wherein said pedestal comprises an elongate sleeve and a slider receivable therein, said slider is selectively attachable to said sleeve at predetermined positions. ### Claim 15 (depends on 1) The apparatus of claim 1 wherein said user engagement means comprises a vertical member upstanding from said head member having a transverse member at the upper end thereof, a pair of spaced apart handlebars extending from said transverse member. ### Claim 16 (depends on 1) The apparatus of claim 1 wherein said pivot arm is moveable in a plane coincident with the axis of said mast and said upstanding bar, said means for suspending weights comprising a transverse bar mounted to said elongate arm depending from said pivot arm. ### Claim 17 (depends on 16) The apparatus of claim 16 wherein said transverse bar receiving free weight plates thereon. ### Claim 18 Exercise apparatus comprising a base frame having a first end and a second end, an upright bar mounted at the second end of said frame, an upwardly extending mast pivotably mounted to the frame between said first and second ends thereof, the upright bar having an elongate pivot arm pivotably mounted thereto, the pivot arm pivotable in a vertical plane, said pivot arm having a free end opposing its attachment to said upright bar, said free end of said pivot arm provided with a head member engaged with said mast and movable therealong, means for a user to raise said head member, said pivot arm having an elongate arm depending therefrom, said elongate arm depending below said pivot arm. means for suspending weights from said elongate arm. ### Claim 19 (depends on 1) The apparatus of claim 1 wherein said pivot arm has an extension extending from its attachment to said upstanding bar, biasing means urges said extension of said pivot arm toward said base, seat means is associated with said base frame. ### Claim 20 (depends on 19) The apparatus of claim 19 wherein the seat means is disposed upon said first end of said base frame, said means for a user to raise said head member comprises a pair of spaced apart handlebars fixed to said head member, said handlebars extending from said head member and disposed generally above said seat means, said biasing means comprises a coil spring in tension.