An apparatus for converting a cycle-type exercise machine into another type of exercise machine includes a stationary frame structure that attaches to a frame of the cycle-type exercise machine, a pair of swing arms pivotally coupled with the stationary frame structure, and a pair of coupler bars pivotally coupled with the pair of swing arms on one end and rotationally attached to a crank bar of the cycle-type exercise machine on an opposite end.

An exercise apparatus includes a base frame, a swing unit including a pair of swing arms pivotally mounted at the base frame, a pedal unit pivotally mounted at the swing unit, a travel path constraining unit including a pivot axle pivotally connected to the base frame, a pair of upper crank arms respectively affixed to two opposite ends of the pivot axle in reverse directions and a pair of links respectively pivotally connected between the upper crank arms and the swing arms for limiting the swinging range of the swing unit, a first damping unit for providing a damping resistance to the pedal unit, and a second damping unit for providing a damping resistance to the swing arms.

An extension base for an exercise apparatus includes a stationary seat that is attached to a bottom of a frame of the exercise apparatus and defines therein a channel; and two extension legs that are inserted into the channel of the stationary seat from two openings at two ends of the stationary seat, so that the extension legs can be extended or retracted with respect to the stationary seat. When the extension legs are fully retracted into the stationary seat, a distance between the outer ends of the two extension legs farthest away from each other is still long enough to support the elliptical exerciser and prevent it from falling. The extension base solves the problem that the conventional exercise apparatus tends to rollover when its base is removed.

An exercise machine includes a joint assembly. The joint assembly includes a pivot rod, a first component connected to the pivot rod, a second component connected to the pivot rod, and a bushing mounted on the pivot rod between the first component and the second component. The bushing includes a body with a first side and a second side, the body comprising an elastic, flexible material; a first plate connected to the first side of the body; and a second plate connected to the second side of the body.

An elliptical system is disclosed having a crank assembly configured to be adjusted in length to accommodate users having varying gaits. In some embodiments, the crank assembly includes a crank and an axle connection bracket that is slidably adjustable with respect to the crank. For example, the crank assembly can include a crank link having a longitudinal body, where the longitudinal body is connected to the crank at one end and includes a longitudinal slot slidably coupled with the axle connection bracket. The axle connection bracket is configured to slide through a plurality of positions along the longitudinal body. In some embodiments, the crank assembly further includes a screw for adjusting the axle connection bracket with respect to the crank, where the screw can cause the axle connection bracket to slide through one or more positions of the plurality of positions when the screw is turned.

A machine for concurrently performing opposing pushing and pulling motions with the legs and arms at various angles to simulate multiple exercises including climbing, running and crawling motions, wherein the machine is adjustable in angle. The individual lower body user supports move in a back and forth pattern on rails and include foot platforms and shin support pads for support a user's lower body and pivoting upper body user support hand grips wherein the left upper body user support and left lower body user support move in opposite directions and the right upper body user support and right lower body user support move in opposite directions and all four user supports move in unison.

An elliptical exercise machine, in one embodiment, includes a first assembly pivotally coupled with a second assembly and at least one assist mechanism. The first assembly includes a first frame member, a rotational resistance mechanism associated with the first frame member, a first foot support member pivotally coupled to a portion of the rotational mechanism and a second foot support member pivotally coupled to another portion of the rotational mechanism. The second assembly includes a second frame member, a first reciprocating arm pivotally coupled with the second frame member, a second reciprocating arm pivotally coupled with the second frame member. In one embodiment, the assist mechanism may include a folding assist mechanism to provide resistance between the assemblies during a folding transition. In another embodiment, the assist mechanism may include a rotational assist mechanism to assist a user in transitioning the elliptical machine to an upright storage position.

An exercise machine includes a frame and a resistance mechanism attached to the frame. A crank assembly in mechanical communication with the resistance mechanism, and the crank assembly includes a crank arm and a roller connected to the crank arm. A pedal assembly is movably attached to the crank assembly and movable in a performance of an exercise. The pedal assembly includes a pedal beam and a first tensioned element that spans at least a first portion of an underside of the pedal beam. A second tensioned element spans a second portion of the underside of the pedal beam and the roller is disposed between the first tensioned element and the second tensioned element.

An exercise machine includes a frame, a first rotary mechanism supported on the frame, a second rotary mechanism rotatably engaging with the first rotary mechanism, and a driving mechanism operatively coupled to the second rotary mechanism and configured to impart rotation of the second rotary mechanism while the driving mechanism is being actuated. The second rotary mechanism is hubless. The second rotary mechanism is configured to absorb and retain an amount of the actuation of the driving mechanism as a moment of inertia while the second rotary mechanism rotates.

An exercise apparatus may provide a novel linkage assembly suitable for linking circular motion to relatively more complex, generally elliptical motion. Left and right rocker links may be rotatably mounted on a frame rotatable about a first axis. Left and right rocker linkages may be mounted on the frame rotatable about a second axis. Left and right force receiving members may be movably connected between respective rocker links and rocker linkages in such a manner that the force receiving members move through paths of motion which are fixed, adjustable or variable.