Spot type disc brake

Claim 1

IN A DISC BRAKE COMPRISING: A ROTOR HAVING A PAIR OF FRICTION SURFACES THEREON, FIRST FRICTION MEANS LOCATED OPPOSITE ONE OF SAID ROTOR FRICTION SURFACES, A FIXED SUPPORT MEMBER COMPRISING A PAIR OF CIRCUMFERENTIALLY SPACED ARMS EXTENDING OPPOSITE SAID ONE ROTOR FRICTION SURFACE AND EMBRACING SAID FIRST FRICTION MEANS, SAID ARMS PROVIDING AT THEIR INNER EDGES GUIDING AND ANCHORING SURFACES FOR MOVEMENT OF SAID FIRST FRICTION MEANS TOWARD AND AWAY FROM SAID ROTOR AND FOR ANCHORING OF SAID FIRST FRICTION MEANS THEREON, A HOUSING STRADDLING SAID ROTOR AND SAID FRIST FRICTION MEANS, A SECOND FRICTION MEANS OPPOSITE THE OTHER OF SAID ROTOR FRICTION SURFACES, SAID HOUSING CARRYING SAID SECOND FRICTION MEANS FOR ENGAGEMENT WITH SAID OTHER ROTOR FRICTION SURFACE, SAID HOUSING HAVING A PAIR OF CIRCUMFERENTIALLY SPACED ENDS EMBRACING SAID ARMS, THE OUTER EDGE OF EACH OF SAID ARMS BEING LOCATED ADJACENT TO AND FACING A RESPECTIVE ONE OF SAID HOUSING ENDS, A BEARING MEMBER LOCATED BETWEEN EACH OF SAID HOUSING ENDS AND THEIR RESPECTIVE ARMS, EACH SAID BEARING MEMBER BEING ROTATABLY MOUNTED ON A RESPECTIVE ONE OF SAID ARMS ABOUT AN AXIS GENERALLY PARALLEL TO THE PLANE OF SAID ROTOR FRICTION SURFACES, A SLOT LOCATED ON EACH OF SAID HOUSING ENDS AND FACING THEIR RESPECTIVE ARMS, THE SIDES FACES OF SAID SLOTS EXTENDING TOWARD SAID ONE ROTOR FRICTION SURFACE, EACH SAID BEARING MEMBER HAVING FLAT SIDE SURFACES ENGAGING THE SIDE FACES OF SAID SLOTS THEREBY PROVIDING A SLIDABLE CONNECTION BETWEEN SAID FLAT SURFACES OF SAID BEARING MEMBERS AND SAID SIDE FACES OF SAID SLOTS OF SAID HOUSING FOR MOVEMENT IN A DIRECTION GENERALLY PERPENDICULAR TO THE PLANE OF SAID ROTOR FRICTION SURFACES AND PROVIDING A ROTATABLE CONNECTION OF SAID HOUSING AND BEARING MEMBERS RELATIVE TO SAID SUPPORT MEMBER, EACH OF SAID SLOTS HAVING A CLOSED END SURFACE, EACH OF SAID BEARING MEMBERS HAVING AN END SURFACE TRANSVERSE TO SAID SIDE SURFACES FOR ENGAGING SAID CLOSED END SURFACE OF SAID SLOT, EACH OF SAID END SURFACES ON SAID BEARING MEMBERS AND THE CLOSED END SURFACE OF THEIR RESPECTIVE SLOTS BEING SO SPACED THAT WHEN ONE SET OF END SURFACES ARE IN ENGAGEMENT WITH EACH OTHER THERE IS A CLEARANCE BETWEEN THE OTHER SET OF END SURFACES, AND ACTUATING MEANS CARRIED BY SAID HOUSING AND ENGAGING SAID ONE FRICTION MEMBER FOR SLIDING THE SAME INTO ENGAGEMENT WITH SAID ONE ROTOR FRICTION SURFACE WHEREBY UPON ENGAGEMENT OF SAID ONE FRICTION MEMBER WITH SAID ROTOR SAID HOUSING WILL SLIDE TO BRING SAID SECOND FRICTION MEMBER INTO ENGAGEMENT WITH SAID OTHER FRICTION SURFACE.