This invention improves on existing trampolines by utilizing a strap and pulley to relocate the resilient means from a horizontal position adjacent to the jumping surface to a vertical position below the upper trampoline frame.

An exerciser has a baseplate with a fulcrum projecting outwardly from one side and wheels depending outwardly from the opposite side. A balanced-enhanced exercising platform is provided when the fulcrum is positioned downwardly on a floor, and alternatively, a balance-enhanced exercising dolly is provided when the wheels are positioned downwardly on the floor. The dolly may be biased by elastic resistance straps.

Exemplary embodiments of a portable exercise apparatus are provided, the exercise apparatus including a base, a bottom plate secured to a top portion of the base, a bracket affixed to the bottom plate, a base plate secured to a top portion of the bottom plate, the base plate including a plurality of holes on a top surface of the base plate, a foot plate secured to a top portion of the base plate and configured to selectively engage with at least one of the plurality of holes on the top surface of the base plate, such that when the foot plate is rotated the base plate and bottom plate also rotate, a threaded hole on the base, and a first resistance element having a first end secured to the threaded hole on the base and a second end secured to the bottom plate.

A device including a frame, that is designed to be attached to a stationary structure element, at least one member for applying the forces produced by the patient, mounted on the frame and free to rotate about an axis of rotation that is fixed relative to the frame, a force sensor that measures, in a direction radial to the axis of rotation, the traction component of the forces applied to the member, and an angle sensor that measures the angular positioning of the member about the axis of rotation.

A personal force-resistance cable exercise device includes a force resistance assembly, elongated flexible cable, and a movable exercise implement. The force resistance assembly comprises a mounting frame, a rotatable assembly shaft carried by the mounting frame, a disk rotor fixedly attached to the assembly shaft, an adjustable friction controller adapted for frictionally engaging the disk rotor, and a one-way cable spool. The one-way cable spool is locked to the assembly shaft upon rotation of the cable spool in a working force-resistance direction, and is freely movable relative to the assembly shaft upon rotation of cable spool in an opposite cable-wind-up direction. The flexible cable is attached to the force resistance assembly, and adapted for winding on and unwinding from the cable spool. The exercise implement is attached to the flexible cable, and adapted for being employed by a user performing an exercise.

A chest expander comprises a shell, a rotating shaft, a winding storage wheel, an elastic member, and a pull strap, further comprises a resistance adjustment mechanism, and the resistance adjustment mechanism comprises a resistance wheel, an arc-shaped base strap, and a friction plate, wherein the resistance wheel is arranged on the rotating shaft, the arc-shaped base strap is arranged opposite to a peripheral surface of the resistance wheel, and the friction plate is arranged on an inner surface of the arc-shaped base strap and is in frictional contact with the peripheral surface of the resistance wheel; and one end of the arc-shaped base strap is fixedly connected to the shell, and the other end is movable and adjustable to adjust friction between the friction plate and the resistance wheel. the utility model employs purely mechanical adjustment, which achieves a simpler structure and can greatly reduce costs.

An exercise device is described. An exercise device including a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite end of the body, and first and second sides extending between the first and second ends; a first axle connected to a first wheel, the first axle also connected to the body proximate the first end at a first hub; a first spring having a first spring end, the first spring positioned at least partially within the first axle, with the first spring end slidably connected to one of the first wheel and the first hub at a first junction, wherein the first junction is configured to convey torque between the one of the first hub and the first wheel and the first spring end.

An exercise device is described. An exercise device including a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite end of the body, and first and second sides extending between the first and second ends; a first axle connected to a first wheel, the first axle also connected to the body proximate the first end at a first hub; a first spring having a first spring end, the first spring positioned at least partially within the first axle, with the first spring end slidably connected to one of the first wheel and the first hub at a first junction, wherein the first junction is configured to convey torque between the one of the first hub and the first wheel and the first spring end.

A rotatable disc exercise apparatus is disclosed that includes a first disc having a first outer planar surface and a first inner surface, a second disc fastened to the first disc and rotatably supported on the first disc by a first annular set of ball bearings and a second annular set of ball bearings. The second disc has a second outer planar surface and a second inner surface facing the first inner surface. A single biasing member sandwiched between the first and second discs resiliently biases the second disc to a neutral rotational position between the discs. The first annular set of bearings is captured between the inner surfaces by an annular outer wall of one of the discs and an inner annular rib of the other one of the discs. The second set of bearings is carried in an annular race between the first and second inner surfaces.

A collapsible cycling exerciser is an apparatus that effectively exercises a user through full ranges of motion and varied resistance. The apparatus includes a first support post, a second support post, a left handlebar, a right handlebar, a left pedaling mechanism, a right pedaling mechanism, and a torsional resistance mechanism. The first support post and the second support post, together, upholds and positions the user. The left handlebar and the right handlebar guide the linear movement of the arms. The left pedaling mechanism and the right pedaling mechanism guide the rotary movement of the legs. The torsional resistance mechanism applies resistance to the left handlebar, the right handlebar, the left pedaling mechanism, and the right pedaling mechanism. In the preferred embodiment of the apparatus, a hinged connection secures the first support post and the second support post to each other so that the apparatus is collapsible.