Abstract: A hand exercise device which includes a pair of hand grips which are interconnected by a shaft, which shaft is adapted to be axially received within a hollow bore of one of the hand grips. The shaft has a helix groove bored through the free end thereof which cooperates with a through pin lodged within one hand grip so that when axial pressure is applied to the hand grips, the interaction of the actuating through pin and the helix groove causes the hand grips to rotate in counter directions to one another to thereby compress a resistence spring to exercise the wrists, arms and upper body of the user.

Abstract: A unitary, light-weight, and readily installable shock absorbing device for use in conjunction with the seat of a bicycle provides a pair of interacting, open-ended housings which are held together in variable linear relationship by a pair of bolt-like fasteners. A plurality of coil springs are disposed internally of the housing and serve to separatably urge the housings in the direction of their maximally extended positions and a plurality of coil springs are also disposed exteriorly of the lower of the housings and serve to retard the abrupt separation of the housings caused by the internally disposed springs when the latter springs are compressed by the weight of a rider. The interaction of the open ends of the housings permit the internally disposed springs to contract and expand without transmitting or permitting forward or sidewise sway or shift to the seat of the bicycle.