Abstract: A hand-toboggan to accommodate a seated or kneeling rider and having a bottom surface with a longitudinally extending medial portion and two opposite flanks upwardly and outwardly inclined from the medial portion, a pair of parallel longitudinally extending ribs bordering the medial portion, and a plurality of parallel inwardly curving ribs on each of said flanks to enable the rider to turn the toboggan in whichever direction he should lean.

Abstract: A mechanical resistance assembly employs a resilient strap which is stretched by the use of a pulley system pulled by the user. The assembly has an adjustable mechanical advantage and in a preferred use thereof being selectively coupled to a rigid, stable frame in any one of a variety of different configurations permitting a corresponding variety of different exercises to be performed by the user, some with the aid of a lever fulcrummed to the frame, but being usable also when attached to a door jamb and door or to a wall stud.

Abstract: A video golf machine enables players to play simulated golf against each other. The machine presents a picture or plan of each "hole" of a selected golf course, including the length of the hole, slope (19) of the ground, positions of boundaries and of obstacles such as trees (17), shrubs, bunkers (13) and water (15) for example. For each game conditions may change such as wind direction (20) and strength, temperature, humidity, surface condition, condition of each green and any other variable affecting all players alike. Each player selects type of club and strength and direction of shot for each shot.

Abstract: A voltage-controlled type oscillator utilizing charging and discharging of a capacitor. The oscillation frequency is made to vary in exact proportion to the control voltage by variably controlling electric charge in accordance with the control voltage during charging and discharging of the capacitor.