Abstract: An upper body exercise apparatus to assist an exerciser to do chin-ups and dips. The apparatus includes a frame having a base, a platform parallel to the base for the exerciser to stand on, and chin-up handles and dip handles extending from the frame. A motive device oscillates the platform vertically between a lower position and an upper position while maintaining the platform parallel to the base. Angular displacement of the platform is prevented by attaching the platform to a guide member which permits the platform to travel vertically along the device frameposts but does not permit the platform to travel horizontally relative to the frameposts. The guide members can comprise a set of rollers or collars. The system further includes a control and monitor whereby the force is controlled and the oscillation of the platform is monitored.

Abstract: An upper body exercise apparatus to assist an exerciser to do chin-ups and dips. The apparatus includes a frame having a base, a platform parallel to the base for the exerciser to stand on, chin-up handles and dip handles extending from the frame, a system to oscillate the platform vertically between a lower position and an upper position while maintaining the platform parallel to the base and while avoiding any angular displacement, a pneumatic cylinder for providing a force to the oscillating system which is opposite the weight of the exerciser, and a control and monitor whereby the force is controlled and the oscillation of the platform is monitored.

Abstract: An exercise apparatus that simulates stair-climbing for a user. The apparatus includes a frame having a base, and a plate on the frame perpendicular to the base. A right pedal and a left pedal are on opposite sides of the plate. A drive system assembly on the plate has a right pedal sprocket, a left pedal sprocket, and a drive sprocket, wherein the right sprocket or left sprocket turn the drive sprocket in one direction only and the right and left sprockets are free to overrun in the opposite direction. The right pedal oscillates between an upper position at rest and a lower, rearward position under the weight of the user and drivingly engages the right pedal sprocket. The left pedal, operating independently of the right pedal, oscillates between an upper position at rest and a lower, rearward position under the weight of the user and drivingly engages the left pedal sprocket. A speed increasing transmission has an input and an output.

Abstract: A treadmill exerciser involving an upwardly and rearwardly sloping treadmill having a plurality of steps which are activated by the weight of a person "walking" up them. The tread portion and the riser portion of each step are connected at both ends by hinges to each other and to endless chains which permit the steps to move or fold around end sprockets as the steps move from an upper inclined course of the chains to a lower inclined return course, and vice versa. A speed control mechanism, driven by one of the chains, employs a gyroscopic flywheel which cooperates with a non-rotatable but axially slidable brake drum to provide even, continuous step movement and a controlled start-up. The flywheel drives a plastic cylinder composed of plastic fingers which fly out, under centrifugal force, into contact with the inner surface of the brake drum thus preventing further increased speed for the user.

Abstract: An upper body exercise apparatus to assist an exerciser to do chin-ups and dips. The apparatus includes a frame having a base, a platform parallel to the base for the exerciser to stand on, chin-up handles and dip handles extending from the frame, a system to oscillate the platform vertically between a lower position and an upper position while maintaining the platform parallel to the base and while avoiding any angular displacement, a pneumatic cylinder for providing a force to the oscillating system which is opposite the weight of the exerciser, and a control and monitor whereby the force is controlled and the oscillation of the platform is monitored.

Abstract: An exercise apparatus that simulates stair-climbing for a user. The apparatus includes a frame having a base, and a plate on the frame perpendicular to the base. A right pedal and a left pedal are on opposite sides of the plate. A drive system assembly on the plate has a right pedal sprocket, a left pedal sprocket, and a drive sprocket, wherein the right sprocket or left sprocket turn the drive sprocket in one direction only and the right and left sprockets are free to overrun in the opposite direction. The right pedal oscillates between an upper position at rest and a lower, rearward position under the weight of the user and drivingly engages the right pedal sprocket. The left pedal, operating independently of the right pedal, oscillates between an upper position at rest and a lower, rearward position under the weight of the user and drivingly engages the left pedal sprocket. A speed increasing transmission has an input and an output.