Disk brakes

Claim 1

ON A WHEEL MOUNTED FOR ROTATION ON A CHASSIS, AN IMPROVED DISK BRAKE FOR USE IN STOPPING THE ROTATING WHEEL AND COMPRISING IN COMBINATION: AN ANNULAR DISK HAVING OPPOSITELY DISPOSED FACES AND INNER AND OUTER CIRCUMFERENCES; A PLURALITY OF ARMS SPACED AROUND AND RIGIDLY ATTACHED TO ONE OF SAID OPPOSITELY DISPOSED DISK FACES INTERMEDIATE SAID CIRCUMFERENCES AND TO SAID WHEEL FOR SUPPORTING SAID DISK FOR ROTATION THEREWITH ABOUT AN AXIS OF ROTATION; A SUPPORT MEMBER RIGIDLY SECURED TO SAID CHASSIS; STATIONARY GUIDE RODS MOUNTED IN SAID SUPPORT MEMBER PARALLEL TO SAID AXIS OF ROTATION; A MOVABLE MEMBER SLIDABLY MOUNTED ON SAID GUIDE RODS AND ONLY MOVABLE THEREON NORMAL TO SAID DISK FACES, SAID MOVABLE MEMBER DEFINING A RECESS THROUGH WHICH A PORTION OF SAID DISK ROTATES, AND A CYLINDER BORE FACING THE OTHER OF SAID OPPOSITELY DISPOSED DISK FACES AND CONGRUENT WITH SAID RECESS; A PISTON SLIDABLY MOUNTED IN SAID CYLINDER BORE; FRICTIONAL LININGS DISPOSED IN SAID RECESS AND AXIALLY SPACED FROM SAID DISK FACES, ONE OF SAID LININGS BEING OPPOSED TO SAID OTHER DISK FACE, AND TWO OTHER LININGS BEING OPPOSED TO SAID ONE DISK FACE, SAID OTHER LININGS BEING RESPECTIVELY ARRANGED RADIALLY ON OPPOSITE SIDES OF EACH OF SAID PLURALITY OF ARMS, AND SAID OTHER LININGS BEING SECURED TO SAID MOVABLE MEMBER AND MOVABLE THEREWITH TO ENGAGE SAID ONE DISK FACE AND SAID ONE LINING BEING MOVABLE BY SAID PISTON TO ENGAGE SAID OTHER DISK FACE; SUPPORTING MEANS FOR SAID ONE LINING INCLUDING PLAYTAKE-UP MEANS, SAID SUPPORTING MEANS COMPRISING A YOKE MOUNTED ON SAID MOVABLE MEMBER, TRANSVERSE SAID AXIS OF ROTATION AND SUPPORT RODS FASTENED TO SAID YOKE AND TO SAID ONE LINING PARALLEL TO SAID AXIS OF ROTATION, SAID YOKE AND RODS THEREBY SUPPORTING SAID ONE LINING AGAINST MOVEMENT AROUND SAID AXIS OF ROTATION AND FOR MOVEMENT BY SAID PISTON PARALLEL TO SAID AXIS OF ROTATION; A FIRST RETURN SPRING MOUNTED BETWEEN SAID MOVABLE MEMBER AND SAID SUPPORTING MEANS AND SECOND RETURN SPRING MOUNTED BETWEEN SAID SUPPORT MEMBER AND SAID MOVABLE MEMBER, SAID RETURN SPRINGS FOR BIASING SAID LININGS CLEAR OF SAID DISK; WHEREBY A PRESSURE APPLIED TO IN SAID CYLINDER BORE MOVES SAID PISTON AND MOVABLE MEMBER AND THEIR RESPECTIVELY ASSOCIATED LININGS INTO FRICTIONAL ENGAGEMENT WITH THE OPPOSITELY DISPOSED FACES OF SAID ANNULAR DISK TO STOP ANY ROTATION OF SAID DISK AND ATTACHED WHEEL ABOUT SAID AXIS OF ROTATION, AND RELEASING SAID PRESSURE RELEASES SAID LININGS FROM SAID ENGAGEMENT.