Spot type disc brakes

Claim 1

A DISC BRAKE COMPRISING A ROTATABLE DISC, A CALIPER STRADDLING A PORTION OF THE OUTER PERIPHERY OF SAID DISC AND MOVABLE AXIALLY RELATIVE TO SAID DISC, FRICTION PAD ASSEMBLIES FOR ENGAGEMENT WITH OPPOSITE FACES OF SAID DISC HOUSED IN OPPOSED LIMBS OF SAID CALIPER AND OF WHICH ONE IS AXIALLY MOVABLE RELATIVE TO THE CALIPER, ACTUATING MEANS CARRIED BY THE CALIPER FOR URGING SAID AXIALLY MOVABLE FRICTION PAD ASSEMBLY INTO ENGAGEMENT WITH ONE FACE OF SAID DISC, SAID OTHER FRICTION PAD ASSEMBLY BEING ACTUATED INDIRECTLY AND URGED INTO ENGAGEMENT WITH THE OPPOSITE FACE OF THE DISC BY THE REACTION ON THE CALIPER OF THE ACTUATING MEANS FOR SAID AXIALLY MOVABLE FRICTION PAD, RETAINING MEANS FOR AT LEAST SAID AXIALLY MOVABLE PAD ASSEMBLY POSITIONED AT EACH END OF SAID CALIPER OUTSIDE THE PERIPHERY OF SAID DISC, SAID RETAINING MEANS INCLUDING FIRST AND SECOND ANGULARLY RELATED ABUTMEANS FACES, LUG MEANS AT EACH END OF AT LEAST SAID AXIALLY MOVABLE PAD ASSEMBLY EXTENDING OUTSIDE THE PERIPHERY OF THE DISC AND HAVING FIRST AND SECOND ANGULARLY RELATED FACES COMPLEMENTARY TO THE RESPECTIVE ABUTMENT FACES OF SAID RETAINING MEANS, THE FIRST OF SAID FACES ON SAID RETAINING MEANS AND ON SAID LUG MEANS BEING CONSTRUCTED AND ARRANGED TO COOPERATE WITH EACH OTHER TO TAKE A MAJOR PART OF THE CIRCUMFERENTIAL COMPONENT OF DRAG AT THE END OF THE CALIPER WITH WHICH ANY PART ON THE DISC FIRST COMES INTO ALIGNMENT, AND THE SECOND OF SAID FACES BEING CONSTRUCTED AND ARRANGED TO COOPERATE WITH EACH OTHER TO TAKE A MAJOR PART OF THE RADIAL COMPONENT OF DRAG AT THE OPPOSITE END OF THE CALIPER, AND MEANS FOR EFFECTING DETACHMENT OF SAID LUG MEANS FOR SAID RETAINING MEANS, SAID DETACHMENT MEANS BEING CONSTRUCTED AND ARRANGED TO PERMIT AT LEAST SAID AXIALLY MOVABLE FRICTION PAD ASSEMBLY TO BE REMOVED FROM THE CALIPER IN A CIRCUMFERENTIAL DIRECTION RELATIVE TO THE DISC.