Accessory drive mechanism

Claim 1

AN ACCESSORY DRIVE FOR DRIVING THE ACCESSORIES OF A VEHICLE ENGINE COMPRISING A HOLLOW INPUT SHAFT DRIVEN BY SAID ENGINE AT A SPEED DIRECTLY PROPORTIONAL TO ENGINE SPEED, A ROTATABLE POWER DELIVERY PULLEY HAVING SPACED SIDE WALLS AT OPPOSITE SIDES OF SAID PULLEY, SAID PULLEY FORMING A CHAMBER THEREIN, A PLANET CARRIER DISPOSED IN SAID CHAMBER AND DRIVEN BY SAID INPUT SHAFT, A REACTION SUN GEAR DISPOSED IN SAID CHAMBER, A BRAKE DRUM HAVING A CYLINDRICAL PORTION COAXIAL WITH SAID POWER INPUT SHAFT ROTATABLY SUPPORTING SAID BRAKE DRUM ON SAID POWER INPUT SHAFT AND FIXED TO SAID REACTION SUN GEAR, AN ANNULAR SHOULDER ON SAID BRAKE DRUM, A BEARING BETWEEN SAID SHOULDER AND ONE OF SAID SIDE WALLS OF SAID PULLEY, AN ANNULAR SUPPORT MEMBER AT THE OPPOSITE SIDE OF SAID CHAMBER, MEANS EXTENDING THROUGH SAID HOLLOW POWER INPUT SHAFT AND SAID ANNULAR SUPPORT MEMBER FOR RETAINING SAID ANNULAR SUPPORT MEMBER IN ASSEMBLED RELATIONSHIP ON SAID POWER INPUT SHAFT, A BEARING BETWEEN SAID ANNULAR SUPPORT MEMBER AND THE OTHER OF SAID PULLEY SIDE WALLS, BELT MEANS CONNECTING SAID PULLEY TO SAID ENGINE ACCESSORIES FOR DRIVING THE SAME, RING GEAR DISPOSED IN SAID CHAMBER AND FIXED TO SAID PULLEY FOR ROTATION THEREWITH, PLANET GEARS ON SAID CARRIER IN MESH WITH SAID SUN GEAR AND RING GEAR, A ONE-WAY CLUTCH IN SAID CHAMBER EFFECTIVE WHEN ENGAGED TO CONNECT SAID CARRIER TO SAID PULLEY, AN ENGAGEABLE AND RELEASABLE BREAK BAND FOR SAID BRAKE DRUM EFFECTIVE WHEN ENGAGED TO PREVENT ROTATION OF SAID BRAKE DRUM AND SAID REACTION SUN GEAR, SPRING MEANS NORMALLY EFFECTIVE TO RELEASE SAID BRAKE BAND FROM SAID DRUM, A VACUUM MOTOR OPERABLY CONNECTED TO SAID BRAKE BAND, PASSAGE MEANS CONNECTING SAID VACUUM MOTOR TO SAID ENGINE AS A SOURCE OF VACUUM, A SOLENOID VALVE IN SAID PASSAGE MEANS EFFECTIVE IN A FIRST POSITION TO BLOCK OFF SAID MOTOR FROM ATMOSPHERE AND TO CONNECT SAID MOTOR TO SAID VACUUM SOURCE, SPRING MEANS YIELDABLY BIASING SAID SOLENOID VALVE TO SAID FIRST POSITION WHEN SAID SOLENOID VALVE IS DEENERGIZED, A CENTRIFUGAL SWITCH DRIVEN DIRECTLY BY SAID ENGINE AT A SPEED DIRECTLY PROPORTIONAL TO ENGINE SPEED FOR CONTROLLING ENERGIZATION AND DEENERIGIZATION OF SOLENOID VALVE, SPRING MEANS YIELDABLY BIASING SAID CENTRIFUGAL SWITCH TO AN OPEN POSITION IN OPPOSITION TO CENTRIFUGAL FORCE, ADDITIONAL SPRING MEANS YIELDABLY BIASING SAID CENTRIFUGAL SWITCH TOWARD A CLOSED POSITION AND ASSISTING CENTRIFUGAL FORCE, ADJUSTABLE MEANS ASSOCIATED WITH SAID LAST-MENTIONED SPRING MEANS FOR ADJUSTING THE FORCE EFFECT OF SAID LAST-MENTIONED SPRING MEANS ON SAID CENTRIFUGAL SWITCH, SAID SWITCH BEING MOVABLE AT A PREDETERMINED ENGINE SPEED TO A CLOSED POSITION TO ENERGIZE SAID SOLENOID VALVE, SAID SOLENOID VALVE BEING MOVABLE WHEN ENERGIZED TO BLOCK OFF SAID VACUUM MOTOR FROM SAID VACUUM SOURCE AND TO CONNECT SAID VACUUM MOTOR FROM SAID VACUUM SOURCE SAID BRAKE BAND FROM SAID DRUM.