Spot-type disk brake

Claim 1

IN A BRAKE SYSTEM, IN COMBINATION, A STRUCTURE INCLUDING A SUPPORT, A ROTATABLE DISK JOURNALED ON SAID SUPPORT AND COUPLED WITH A LOAD, A PAIR OF BRAKE ELEMENTS DISPOSED ADJACENT OPPOSITE FACES OF SAID DISK AT A PERIPHERAL ZONE THEREOF, SAID BRAKE ELEMENTS BEING AXIALLY SLIDABLE TOWARD EACH OTHER ON SAID SUPPORT FOR CLAMPING SAID DISK THEREBETWEEN, SAID STRUCTURE FURTHER INCLUDING A HYDRAULIC CYLINDER RIGIDLY SECURED TO SAID SUPPORT ON ONE SIDE OF SAID DISK ADJACENT ONE OF SAID BRAKE ELEMENTS AND IN SUBSTANTIAL AXIAL ALIGNMENT THEREWITH, A PAIR OF PISTONS FREELY MOVABLE IN SAID CYLINDER, FIRST LINK MEANS OPERATIVELY CONNECTING SAID ONE OF SAID BRAKE ELEMENTS WITH THE PROXIMAL ONE OF SAID PISTONS, A YOKE FLOATINGLY MOUNTED ON SAID STRUCTURE ADJACENT SAID CYLINDER AND REACHING AROUND SAID DISK, SECOND LINK MEANS INCLUDING SAID YOKE OPERATIVELY CONNECTING THE OTHER OF SAID BRAKE ELEMENTS WITH THE DISTAL ONE OF SAID PISTONS WHEREBY SAID BRAKE ELEMENTS ARE MOVED TOWARD EACH OTHER UPON SEPARATION OF SAID PISTONS, CONDUIT MEANS OPENING INTO SAID CYLINDER BETWEEN SAID PISTONS, CONDUIT ADMITTING A HYDRAULIC FLUID THERETO IN A MANNER URGING SAID PISTONS APART, THEREBY FORCING SAID BRAKE ELEMENTS AGAINST SAID DISK, A LEVER FULCRUMED ON SAID YOKE IN OPERATIVE ENGAGEMENT WITH SAID PROXIMAL PISTON, AND MANUAL BRAKEACTUATING MEANS COUPLED WITH SAID LEVER FOR SWINGING THE LATTER ABOUT ITS FULCRUM IN SENSE URGING SAID BRAKE ELEMENTS TOWARD EACH OTHER, SAID DISTAL PISTON BEING PROVIDED WITH A MEMBER PROJECTING AXIALLY BEYOND SAID CYLINDER, SAID YOKE HAVING ONE END SUPPORTED ON SAID MEMBER AND HAVING ITS OTHER END DIRECTLY SECURED TO SAID OTHER OF SAID BRAKE ELEMENTS.