Abstract: An eccentric error corrector for a rotary-type acceleration generating apparatus. The eccentric error corrector includes a large-diameter turntable and a small-diameter turntable. The large-diameter turntable is rotated by a first servo motor. The small-diameter turntable is mounted on the outer periphery portion of the large-diameter turntable and rotatable by a second servo motor, in which an acceleration sensor is attachable to the small-diameter turntable. The eccentric error corrector includes a DC-component remover removing only the DC component from an output signal of the acceleration sensor attached on the small-diameter turntable.

Abstract: A liquid-cooled disc brake for use in a vehicle having a rotatable shaft, at least one rotor fitted to the outer peripheral surface of the shaft, in which the rotor is unrotatable but slightly axially movable with respect to the shaft, a caliper secured to the vehicle body, having a first wall, a second wall positioned opposite to the first wall and a third wall. The caliper is substantially U-shaped in section with its inner peripheral side opening to thereby surround the whole perimeter of the rotor. The second wall of the caliper is made hollow so that the cooling liquid circulates freely through the hollow portion of the second wall. The disc brake further includes means for thrusting against the rotor provided at an inner side of the first wall of the caliper. The thrust means is operated at the time when the brake is performed.

Abstract: The brake control system for use in a vehicle includes a compression cylinder device, which communicates with a fluid passage between a gate valve and a wheel cylinder. A compression piston is reciprocately disposed inside of the compression cylinder device. A cut off valve member is disposed in the compression cylinder device, which closes a fluid supply passage between a fluid chamber of the compression cylinder device and the wheel cylinder of the brake device for the driven wheel. The system further includes a valve system provided between an accumulator and the compression cylinder device. The valve system is provided for selectively supplying the brake fluid pressure in the accumulator to the compression cylinder device during the lock-preventing and acceleration slip-preventing controls.

Abstract: A frictional material is disclosed, which is characterized in that, with the metal-containing composite material infiltrated with metal into the pore portions of composite comprising carbon material reinforced with carbon fibers, the porosity of said composite is adjusted to 5 to 15 vol. % and a metal or an alloy with a melting point of 125.degree. to 1100.degree. C. is infiltrated in amounts of 3 to 10 vol. %.