Abstract: A supplementary power system of an automobile, including a plurality of pre-heating water chambers and a steam boiler connected in series, a water circulation loop for collecting heat from the engine cooling system of the automobile for warming up water in the pre-heating water chambers, an exhaust gas guide pipe for collecting heat from the exhaust gas of the engine for heating water in the steam boiler into steam, a steam engine driven by steam from the steam boiler, an air compressor driven by the steam engine, and a pneumatic motor driven by the air compressor to transmit a driving power to the engine shaft of the automobile through a transmission belt.

Abstract: A steering wheel controlled car light piloting system including a motor drive controlled by a control circuit linked to the steering column of the steering wheel of a motor car to turn the lights of the motor car through a transmission mechanism consisted of hydraulic cylinders, so as to coincide the positions of the lights of the motor car with the steering direction.

Abstract: An auto correction device for wearing end play in worm gear set has a correction worm gear, two linking gears and auxiliary linking gears to help power transmission in a smooth manner. The correction worm gear further includes a threaded thrust block, an auxiliary linking gear, a thrust plate, an expansion spring and a base plate. The thrust of the expansion spring against the thrust plate enables the displacement of the auxiliary linking gear and threaded thrust block to thrust against the correction worm gear to impose a force upon transmission gear to enable the transmission gear to lean tightly against the worm gear. Thus, wearing end play between the worm gear and the correction worm gear is eliminated.

Abstract: This invention relates to a foot operated control valve in which the water supply is automatically stopped as soon as a foot push button is released. It is not only convenient for use, but can also economize water consumption by means of auto start and stop fully under foot control. The control valve has a housing and a valve body. The valve body includes an inlet cylinder and an outlet cylinder with both cylinders integrally communicated by means of a channel. The inlet cylinder having an adjustment assembly to open or block the water inlet. The outlet cylinder has a spring, valve and sleeve, in which the valve is movable to block or open the valve inlet for stopping or allowing water entry into the outlet. The open/close function can be accomplished by a valve opened by foot or closed by resilience of a spring to ensure that the use and water economization can be accomplished.