Abstract: A fluid control circuit (10) for operation of a brake comprises a first circuit part (11) including an actuator (12) having a chamber (13) and an operating part (14), the operating part (14) being movable to release or apply the brake when fluid under an operating pressure is fed to the chamber (13), an arrangement (17) to expel fluid from the chamber (13) when the operating pressure is released, thus to apply or release the brake, a second circuit part (18), a control valve (20) operable in a first condition to permit fluid to pass under the operating pressure to the chamber (13) of the actuator (12) in the first circuit (11) part and when in a second condition to permit fluid to pass from the first circuit part (11) into the second circuit part (18), the second circuit part (18) further comprising a buffer (23) to which fluid pressure is communicated from the first circuit part (11) when the control valve (20) is moved to its second condition, and a proportional fluid valve (30) to control the flow of fluid

Abstract: A brakepad assembly for a disc brake comprises a holder having a recess surrounded by end and side wall portions. A brakepad comprises a block of friction material having a metal strip bonded into its rear face, the strip having T-shaped end portions which can be bent into engagement with the wall portions releasably to hold the pad in position. The pad assemblies are pivoted to the ends of caliper arms and have the disc-engaging surfaces of the pads held parallel to the disc surfaces by resilient links which form with the arms a parallelogram linkage.