Abstract: A brake fluid control cylinder assembly for use in a brake system of an automobile comprises a cylindrical housing, two coaxially-spaced chambers therein and an internal flange wall therebetween, a coaxial opening in the flange wall, front and rear pistons slidable in the respective chambers, each having respective piston rods extending therefrom, brake fluid inlets and outlets for each chamber, check valves in the outlets to allow flow of pressurized brake fluid to the wheel cylinders, a bracket for mounting the housing on the vehicle body, a lever arm pivotally mounted on the bracket and engageable by a member extending from the clutch pedal, a push rod on the lever arm engageable with the rear piston so that operation of the clutch pedal moves both pistons in the direction to pressurize brake fluid in the chambers and cause flow through the check valves to actuate the brakes, and a sliding pin spring-urged into the rear of the rear cylinder chamber to engage the rear end of the rear piston upon return ther

Abstract: An automatically controlled socket wrench which comprises a body having handle, a rotating gear member including a pair of jaws which containing a screwing aperture disposed in a supporter extended therefrom and a worm gear member, a controlling wire rope connected to the worm gear member and a button, a stopper for stopping the rotating gear, and a cover for covering the rotating gear assembled with the controlling wire rope and stopper therein whereby when the button is operated, the jaws are caused to open, and after the socket wrench is manipulated around an object, by returning the button and suspending the stopper, the jaws of the socket wrench are automatically and strongly closed around the object.

Abstract: An automatic controlling socket wrench comprises a body having a handle, a rotating gear member including a pair of jaws which containing a plurality of racks and a worm gear, a controlling wire rope connected to the worm gear and a button, a stopper for stopping the rotating gear, and a cover for covering the rotating gear assembled with the controlling wire rope and stopper. When the button moves forward, the jaws are caused to open, and after the socket wrench is manipulated around an object, by moving to return the button and suspending the stopper, the jaws of the socket wrench are automatically and strongly closed around the object.

Abstract: A safety hydraulic brake system for automotive vehicles which includes a control cylinder having an inlet connected to a hydraulic pressure source, and first and second outlets connected to brake cylinders at front and rear wheels, respectively. A valve is located at each outlet and normally allows pressurization of the front and rear wheel cylinders upon actuation of the hydraulic pressure source. First and second pistons, each having a by-pass valve, are slidable in the control cylinder. The pistons and by-pass valves are operable, when there is a loss of brake pressure in the lines to one set of brake cylinders, to effect closing of the control cylinder valve to that brake cylinder set. This allows brake pressure to be maintained at the other set of wheel cylinders and the vehicle to be safely braked.