Abstract: The present exercise machine includes a frame, a seat, foot pedals, a resistance device and a hand crank assembly. The resistance device includes a rotating element such as a cylindrical fan which would require a power input in order to continue rotating. The hand crank assembly is pivotably mounted to the frame such that the hand crank assembly can quickly pivot between a first position suitable for a seated operator and a second position suitable for an upright operator.

Abstract: The exercise apparatus of the present invention includes a base, a resistance device mounted to the base, a pair of foot pedal assemblies mounted to rotate in relation to the base, a pair of upright support assemblies mounted to the base and a pair of hand crank assemblies mounted to the upright support members. The resistance device includes a rotating element which turns when a torque is applied to it. The hand crank assemblies, the foot pedal assemblies and the rotating element of the resistance device are all operatively interconnected so that an operator can turn the rotating element of the resistance device by turning the foot pedal assemblies, by turning the hand crank assemblies or by turning both the foot pedal assemblies and the hand crank assemblies simultaneously at the same rate.

Abstract: The invention waste heat conversion system for a motor vehicle includes a waste heat converting vapor engine coupled by a one way clutch to a motor-generator which is coupled through an engageable clutch to the vehicle drive train. The motor-generator of the invention system is also electrically connected to a storage battery and can either charge the battery or be powered by the battery to provide added power to the drive train. The invention system is capable of numerous modes of operation and can also be configured to convert braking energy for storage in the battery.

Abstract: The ergonomic chair of the present invention provides a seating system that allows an occupant, while seated, to shift his or her position while exercising major muscle groups. The present invention chair includes a seat support frame that supports a seatrest and a backrest. The seatrest and the backrest are connected so that they can pivot relative to each other. The backrest of the invention chair can move along backrest tracks mounted to the frame between a lower resting position and a raised extended position. Because the seatrest is hinged to the backrest, it moves with the backrest by translating and rotating in relation to the frame. The seatrest is supported by the seat support frame so that the seatrest can slide and rotate in relation to the seat support frame. The occupant of the invention chair can push against the backrest, translate the backrest along the backrest tracks, stretch out into the extended position and then return to the resting position.

Abstract: A rotary positive displacement engine includes one or more power rotors, which are acted upon by a pressurized charge of gas, such as steam, and an annular barrier rotor geared for synchronous rotation with the power rotors. The rotors rotate within intersecting cylindrical bores in the engine housing. The power rotors have cylindrical outer surfaces from which opposed vanes extend which are acted upon by the powering charge. The barrier rotor has an outer cylindrical surface, located in close proximity to the cylindrical surface of the power rotors, and ports for delivering the powering charge to the power rotors. The barrier rotor thus forms both a charge delivery mechanism and a barrier between the exhaust ports and the expanding gas powering the engine. Located within the barrier rotor is a stator which has ports in fluid communication with the ports in the barrier rotor when the respective ports are aligned.