Spot-type disc brakes

Claim 1

A DISC BRAKE ASSEMBLY FOR A ROTATING BRAKE DISC COMPRISING A LOWER FIXED SUPPORT WITH A SUBSTANTIALLY HORIZONTAL PORTION, AN UPPER CONTINUOUS CLOSED LOOP HORIZONTAL PORTION WITH A CENTRAL OPENING HAVING ITS LOWER SURFACE SLIDABLY DISPOSED ON THE UPPER SURFACE OF SAID LOWER FIXED HORIZONTAL PORTION, THE OPPOSITE ENDS OF SAID UPPER AND LOWER PORTIONS BEING DISPOSED SUBSTANTIALLY ADJACENT EACH OTHER, A VERTICAL PIVOT PIN MEANS CONNECTING AN ADJACENT END OF SAID UPPER AND LOWER PORTIONS TOGETHER AND THE OTHER ADJACENT ENDS OF SAID UPPER AND LOWER PORTIONS BEING FREELY MOVABLE WITH RESPECT TO EACH OTHER TO PERMIT SUBINSTANTIAL SWINGING MOVEMENT OF SAID UPPER PORTION''S OTHER ADJACENT END WITH RESPECT TO SAID LOWER PORTION''S OTHER ADJACENT END, A ROTATING BRAKE DISC EXTENDING INTO SAID OPENING, BRAKE PAD MEANS DISPOSED IN SAID OPENING ON OPPOSITE SIDES OF AND ADJACENT SAID BRAKE DISC FOR APPLYING A BRAKING FORCE THERTO, BRAKE ACTUATING MEANS FIXED TO SAID CLOSED LOOP FOR MOVEMENT THEREWITH, SAID ACTUATING MEANS BEING DISPOSED ADJACENT ONE OF SAID BRAKE PADS AND OPPOSITE SAID ROTATING BRAKE DISC FOR FORCING SAID PADS AGAINST SAID BRAKE DISC, A THRUST PIN EXTENDING OUTWARDLY FROM SAID ACTUATING MEANS AND IN A DIRECTION AWAY FROM THE SIDE OF ONE SAID BRAKE PAD, ROLLER MEANS DISPOSED IN ALIGNMENT WITH THE LONGITUDINAL AXIS OF SAID THRUST PIN AND HAVING ITS PERIPHERY IN CONTACT WITH SAID THRUST PIN, A LEVER ARM PIVOT PIN CONNECTED TO SAID CLOSED LOOP MEMBER AND IN CONTINUOUS CONTACT WITH SAID ROLLER MEANS, A LEVER ARM PIVOTALLY CONNECTED TO SAID LEVER ARM PIVOT PIN WITH AN INNER END IN CONTACT WITH SAID ROLLER MENS FOR OPERATING SAID ACTUATING MEANS.