Disc brakes

Claim 1

A SPOT TYPE DISC BRAKE INCLUDING A ROTATABLE DISC, A FIXED SUPPORT IN FIXED AXIAL RELATION THERETO CONSISTING OF TWO LIMBS EACH EXTENDING ADJACENT TO ONE FRICTION SURFACE OF THE DISC, OUTWARDLY OPENING RECESSES ARRANGED IN REGISTER IN THE RESPECTIVE LIMBS AND EXTENDING OVER A MINOR PORTION OF THE DISC, FIRST AND SECOND FRICTION PADS LOCATED IN SAID RECESSED; ACTUATING MEANS INCLUDING CYLINDER MEANS ON ONE SIDE OF THE DISC IN OPERATIVE CONNECTION WITH SAID FIRST FRICTION PAD, AND A CALIPER FORMED AS A BOX WITH AN OPEN SIDE DIRECTED TOWARD THE DISC FOR STRADDLING THE DISC, CYLINDER AND FIRST AND SECOND FRICTION PADS, SAID CALIPER HAVING TWO LATERAL WALLS SUBSTANTIALLY PARALLEL TO THE DISC SURFACES AND TWO TRANSVERSAL WALLS SUBSTANTIALLY PERPENDICULAR THERETO WHICH ARE ALL MADE INTEGRAL WITH A PERIPHERAL TOP PORTION, ONE OF SAID LATERAL WALLS SERVING AS AN ABUTMENT FOR SAID CYLINDER MEANS AND THE OTHER LATERAL WALL SERVING AS AN ABUTMENT FOR SAID SECOND FRICTION PAD, AND THE SAID TWO TRANSVERSAL WALLS HAVING THEIR EDGES TURNED OUTWARDLY TO FORM SUBSTANTIALLY CIRCUMFERENTIAL EXTENSIONS FOR OPERATIVE CONNECTION WITH GUIDE LEVERS PIVOTALLY SECURED TO THE FIXED SUPPORT, SAID GUIDE LEVERS URGING SAID CALIPER RADIALLY INWARDLY RELATIVE TO SAID DISC.