Torque responsive clutch disconnect mechanism

Claim 1

A FLUID PRESSURE OPERATED CLUTCH COMPRISING A POWER INPUT MEMBER, A POWER OUTPUT MEMBER, AN INTERMEDIATE MEMBER, ENGAGEABLE FRICTION CLUTCH ELEMENTS CONNECTED TO SAID INTERMEDIATE MEMBER AND SAID POWER OUTPUT MEMBER, SERVO MEANS CARRIED BY SAID INTERMEDIATE MEMBER FOR ENERGIZING SAID CLUTCH ELELMENTS, CONDUIT STRUCTURE FOR DISTRIBUTING FLUID PRESSURE TO SAID SERVO MEANS, A FLUID PRESSURE SOURCE, TORQUE RESPONSIVE VALVE MEANS INCLUDING COOPERATING VALVE ELEMENTS CARRIED BY SAID POWER INPUT MEMBER AND SAID INTERMEDIATE MEMBER FOR ESTABLISHING COMMUNICATION BETWEEN SAID PRESSURE SOURCE AND SAID CONDUIT STRUCTURE WHEN SAID POWER INPUT MEMBER IS CONNECTED TO A SOURCE OF DRIVING POWER AND FOR INTERRUPTING THE SAME WHEN SAID POWER INPUT MEMBER IS DISCONNECTED FROM SAID SOURCE OF DRIVING POWER, AND FLOW CONTROL VALVE MEANS DEFINED IN PART BY SAID CONDUIT STRUCTURE FOR BLOCKING PRESSURE DISTRIBUTION TO SAID SERVO MEANS WHEN THE OPERATING PRESSURE LEVEL IS LOWER THAN A PRE-CALIBRATED VALUE, SAID FLOW CONTROL VALVE MEANS COMPRISING A BYPASS FLUID FLOW PASSAGE INTERCONNECTING SAID CONDUIT STRUCTURE WITH AN EXHAUST REGION, SAID BYPASS PASSAGE INCLUDING A FLUID FLOW RESTRICTION ADAPTED TO CREATE A PRESSURE DIFFERENTIAL THEREACROSS, SAID PRESSURE DIFFERENTIAL ACTING ON SAID FLOW CONTROL VALVE MEANS FOR ACTUATING THE SAME.