Automatic throttle torque responsive power tool

Claim 1

A POWER-OPERATED TOOL COMPRISING: (A) A ROTARY MOTOR; (B) SUPPLY MEANS FOR CONDUCTING MOTOR-DRIVING ENERGY TO SAID MOTOR; (C) CONTROL MEANS HAVING ALTERNATE POSITIONS AND CONTROLLING SAID SUPPLY MEANS SO THAT IN ONE POSITION IT PREVENTS SAID ENERGY FROM BEING SUPPLIED TO SAID MOTOR, AND IN ITS OTHER POSITION, IT ALLOWS AID ENERGY TO FLOW TO SAID MOTOR, SAID CONTROL MEANS INCLUDING BIASING MEANS URGING SAID CONTROL MEANS TO SAID ONE POSITION; (D) A TOOL SPINDLE ADAPTED TO BE CONNECTED TO A WORKPIECE FOR APPLYING A TORQUE LOAD TO THE WORKPIECE; (E) A TORQUE RESPONSIVE CLUTCH INTERCONNECTING SAID SPINDLE TO SAID MOTOR, SAID CLUTCH BEING OPERATIVE, IN RESPONSE TO A PREDETERMINED TORQUE LOAD ON SAID SPINDLE, TO OPEN AND DISCONNECT SAID SPINDLE FROM SAID MOTOR SO THAT SAID MOTOR IS FREE TO CONTINUE TURNING WITHOUT APPLYING A TORQUE TO SAID SPINDLE; (F) SAID CLUTCH INCLUDING LOCK MEANS MOVABLE TO A POSITION WHEREIN IT LOCKS SAID CLUTCH OPEN, SAID LOCK MEANS NORMALLY HOLDING SAID CONTROL MEANS IN ITS OTHER POSITION DURING THE OPERATION OF THE TOOL WHILE SAID CLUTCH IS ENGAGED; (G) AND SAID LOCK MEANS BEING OPERATIVE, WHEN IT MOVES TO A POSITION LOCKING SAID CLUTCH OPEN, TO ALLOW SAID BIASING MEANS TO MOVE SAID CONTROL MEANS TO SAID ONE POSITION PREVENTING SAID MOTOR-DRIVING ENERGY FROM FLOWING TO SAID MOTOR.