Disk brake construction

Claim 1

A DISK BRAKE CONSTRUCTION, PARTICULARLY FOR MOTOR VEHICLES HAVING A STATIONARY WHEEL HUB AND A ROTATING WHEEL AXLE CARRIED THEREBY, COMPRISING BRAKE DISK MEANS SECURED TO SAID ROTATING WHEEL AXLE FOR ROTATION THEREWITH, BRAKE LINING MEANS SUPPORTED ON SAID WHEEL HUB ON BOTH SIDES OF SAID BRAKE DISK MEANS FOR EFFECTING BRAKING ACTION ON SAID ROTATING BRAKE DISK MEANS, ACTUATING PISTON MEANS ASSOCIATED WITH SAID BRAKE LINING MEANS INCLUDING HYDRAULIC CYLINDER MEANS AND AN ACTUATING PISTON MOUNTED THEREIN FOR EFFECTING PRESSURE CONTACT BETWEEN SAID BRAKE LINING MEANS AND SAID BRAKE DISK MEANS IN RESPONSE TO HYDRAULIC PRESSURE WITHIN SAID CYLINDER MEANS, MECHANICAL ACTUATING MEANS INCLUDING A PRESSURE PIECE MOUNTED WITHIN SAID ACTUATING PISTON AND PROTRUDING TO THE OUTSIDE OF SAID HYDRAULIC CYLINDER MEANS FOR MECHANICALLY ACTUATING SAID PISTON MEANS THROUGH SAID PRESSURE PIECE INDEPENDENTLY OF THE HYDRAULIC PRESSURE IN SAID CYLINDER MEANS, A PAIR OF SUPPORT RODS MOUNTED PARALLEL TO THE AXIS OF SAID BRAKE DISK MEANS AND PASSING THROUGH SAID BRAKE LINING MEANS SO AS TO PERMIT ONLY MOVEMENT THEREOF INTO AND OUT OF ENGAGEMENT WITH SAID BRAKE DISK MEANS IN RESPONSE TO ACTUATION OF SAID ACTUATING PISTON MEANS, SAID SUPPORT RODS BEING CONNECTED TO SAID MECHANICAL ACTUATING MEANS THEREBY SERVING ALSO AS MEANS FOR TRANSMITTING FORCE TO SAID PRESSURE PIECE; HOUSING MEANS FOR SUPPORTING SAID ACTUATING PISTON MEANS ON SAID WHEEL HUB INCLUDING SAID PAIR OF SUPPORT RODS AND AT LEAST ONE LEVER FORMING PART OF SAID MECHANICAL ACTUATING MEANS BEING CONNECTED AT ONE END TO SAID SUPPORT RODS AND BEING PIVOTALLY CONNECTED AT THE OTHER END TO SAID HOUSING MEANS, SAID LEVER INCLUDING A PAIR OF ARMS EXTENDING BETWEEN SAID SUPPORT RODS AND SAID HOUSING MEANS AROUND THE SIDES OF SAID HYDRAULIC CYLINDER MEANS.