Clutch-brake unit

Claim 1

A CLUTCH-BRAKE UNIT COMPRISING, IN COMBINATION A HOUSING, AXIALLY ALIGNED INPUT AND OUTPUT SHAFTS MOUNTED IN SAID HOUSING, A HYDRAULIC CYLINDER AND PISTON PROVIDED ON THE INNER END OF SAID INPUT SHAFT FOR ROTATION THEREWITH, SAID CYLINDER AND PISTON BEING CONCENTRIC WITH SAID INPUT SHAFT AND BEING NON-ROTATABLY CONNECTED WITH SAID INPUT A SERIES OF RADIALLY DISPOSED CLUTCH PLATES MOUNTED ON SAID CYLINDER FOR ROTATION THEREWITH, A SERIES OF RADIALLY DISPOSED BRAKE PLATES SPACED FROM SAID CLUTCH PLATES IN AN AXIAL DIRECTION AND NON-ROTATABLY ATTAHCED TO SAID HOUSING, A SERIES OF FRICTION DIUSCS MOUNTED ON THE INNER END OF SAID OUTPUT SHAFT FOR ROTATION THEREWITH AND ADAPTED FOR SELECTIVE FRICTIONAL ENGAGEMENT WITH SAID CLUTCH AND BRAKE PLATES, A PAIR OF AXIALLY SPACED PLATE MEMBERS CARRIED ON THE INNER END OF SAID OUTPUT SHAFT ONE ON EITHER END OF SAID FRICTION DISCS, MEANS EXTENDING BETWEEN SAID PAIR OF PLATE MEMBERS AND OPERABLY ENGAGEABLE THEREWITH IN A MANNER SUCH THAT SAID PAIR OF PLATE MEMBERS ARE MOVABLE TOGETHER AXIALLY OF SAID OUTPUT SHAFT WITH MOVEMENT THEREOF IN ONE DIRECTION SERVING SIMULATANEOUSLY TO FRICTIONALLY ENGAGE SAID CLUTCH PLATES WITH CERTAIN OF SAID FRICTION DISCS AN TO RELEASE THE REMAINING FRICTION DISCS FROM FRICTIONAL ENGAGEMENT WITH SAID BRAKE PLATES AND WITH MOVEMENT THEREOF IN THE OTHER DIRECTION SERVING SIMULTANEOUSLY TO RELEASE SAID CLUTCH PLATES FROM SAID FRICTIONAL ENGAGEMENT WITH SAID CERTAIN FRICTION DISCS AND TO FRICTIONALLY ENGAGE SAID REMAINING FRICTION DISCS WITH SAID BRAKE PLATES, AND SPRING MEANS NORMALLY URGING SAID AXIALLY SPACED PLATE MEMBERS IN SAID OTHER DIRECTION TO ENGAGE THE BRAKE AND RELEASE THE CLUTCH, SAID PLATE MEMEBRS BEING MOVABLE IN SAID ONE DIRECTION TO ENGAGE THE CLUTCH AND RELEASE THE BRAKE ON ACUTATION OF SAID HYDRAULIC CYLINDER AND PISTON WITH ONE OF SAID PLATE MEMBERS BEING POSITIVELY ENGAGED AND SHIFTED BY SAID PISTON.