Improvement in caliper type disk brakes

Claim 1

A HYDRAULIC DISK BRAKE COMPRISING A ROTATABLE DISK, TORQUE MEMBERS FIXED ADJACENT EACH SIDE THEREOF AND EACH HAVING A PAIR OF EXTENDING TORQUE ARMS ENCOMPASSING A SEGMENT OF SAID DISK, PADS OF FRICTION MATERIAL RECEIVED BETWEEN SAID ARMS FOR GENERALLY AXIAL MOVEMENT INTO ENGAGEMENT WITH SAID DISKS AND BEING RESTRAINED BY SAID ARMS AGAINST ROTATIONAL MOVEMENT, A CLAMP HOUSING POSITIONABLE OVER SAID DISK AT SAID SEGMENT AND HAVING A PRESSURE PORTION ENGAGEABLE WITH ONE OF SAID PADS AND A REACTION PORTION ENGAGEABLE WITH THE OTHER OF SAID PADS, MEANS CONNECTING SAID HOUSING TO SAID TORQUE MEMBERS PROVIDING FOR GENERALLY AXIAL MOVEMENT OF SAID HOUSING IN RELATION TO THE ROTATIONAL MOVEMENT OF SAID DISK, AND HYDRAULICALLY OPERATED MEANS IN SAID PRESSURE PORTION OF SAID HOUSING OPERABLE TO EFFECT THE SIMULTANEOUS APPLICATION OF BRAKING FORCE ON SAID PADS THROUGH SAID PRESSURE AND REACTION PORTIONS BY SAID GENERALLY AXIAL MOVEMENT.