Drive mechanism

Claim 1

IN AN AIRCRAFT, A WING, A FLAP OPERATIVELY CONNECTED TO A TRAILING PORTION OF SAID WING, MEANS FOR EXTENDING AND RETRACTING SAID FLAP COMPRISING, REVERSIBLE CONSTANT SPEED ELECTRICAL DRIVE MOTOR MEANS, TWO-SPEED REVERSIBLE MECHANICAL POWER TRANSMISSION MEANS HAVING FIRST AND SECOND DRIVE TRANSMISSION MEANS RESPECTIVELY FORMING FIRST AND SECOND POWER PATHS, SAID POWER TRANSMISSION MEANS BEING DRIVINGLY CONNECTED TO SAID FLAP, CLUTCH MEANS AND BRAKE MEANS IN SAID SECOND POWER PATH HAVING AN INPUT DIRECTLY CONNECTED TO AND DRIVEN BY SAID DRIVE MOTOR MEANS AND AN OUTPUT DIRECTLY CONNECTED TO SAID DRIVING SAID SECOND DRIVE TRANSMISSION MEANS WHEN SAID CLUTCH MEANS IS ENGAGED, SAID FIRST DRIVE TRANSMISSION MEANS BEING CONTINUOUSLY DRIVINGLY CONNECTED TO AND DRIVEN BY SAID DRIVE MOTOR MEANS AND CONTINUOUSLY CONNECTED TO AND DRIVING SAID FLAP WHEN SAID DRIVE MOTOR MEANS IS ENERGIZED, SAID DRIVE MOTOR MEANS DRIVING BOTH SAID FIRST AND SECOND DRIVE TRANSMISSION MEANS FOR DRIVING SAID FLAP AT AN INCREASED SPEED WHEN SAID BRAKE MEANS IS RELEASED AND SAID CLUTCH MEANS IS ENGAGED, THIRD DRIVE TRANSMISSION MEANS AND ELECTRICAL CONTROL MEANS HAVING A MANUALLY OPERABLE FLAP CONTROL SWITCH AND MEANS CONNECTED TO AND DRIVEN BY SAID POWER TRANSMISSION MEANS FOR CONTROLLING THE EXTENSION AND RETRACTION OF SAID FLAP AND FOR CAUSING SAID DRIVE MOTOR MEANS TO TURN IN ONE DIRECTION WHEN SAID FLAP CONTROL SWITCH IS CLOSED IN ONE DIRECTION SO AS TO EXTEND SAID FLAP AND FOR CAUSING SAID DRIVE MOTOR MEANS TO TURN IN ANOTHER DIRECTION WHEN SAID FLAP CONTROL SWITCH IS CLOSED IN ANOTHER DIRECTION SO AS TO RETRACT SAID FLAP, SAID ELECTRICAL CONTROL MEANS INCLUDING MEANS FOR CONTROLLING THE ENGAGEMENT OF SAID CLUTCH MEANS AND RELEASE OF SAID BRAKE MEANS FOR CAUSING SAID FLAP TO BE EXTENDED AND RETRACTED AT THE INCREASED SPEED WHEN SAID FLAP IS EXTENDED BEYOND A PREDETERMINED POINT BETWEEN THE FULLY EXTENDED AND FULLY RETRACTED FLAP POSITIONS, AND SAID ELECTRICAL CONTROL MEANS COMPRISING A PLURALITY OF CAMS GANGED ON A DRUM MECHANICALLY DRIVEN BY SAID THIRD DRIVE TRANSMISSION MEANS HAVING FIRST CAM MEANS OPERATING A FIRST LIMIT SWITCH FOR AUTOMATICALLY STOPPING SAID DRIVE MOTOR MEANS WHEN SAID FLAP HAS BEEN COMPLETELY EXTENDED, SECOND CAM MEANS OPERATING A SECOND LIMIT SWITCH FOR STOPPING SAID DRIVE MOTOR WHEN SAID FLAP HAS BEEN COMPLETELY RETRACTED, THIRD CAM MEANS OPERATING A THIRD LIMIT SWITCH FOR DISENGAGING SAID BRAKE MEANS AND ENGAGING SAID CLUTCH MEANS WHEN SAID FLAP HAS REACHED SAID PREDETERMINED POINT ON BEING EXTENDED, AND FOURTH CAM MEANS OPERATING A FOURTH LIMIT SWITCH FOR DISENGAGING SAID CLUTCH MEANS AND ENGAGING SAID BRAKE MEANS WHEN SAID FLAP HAS REACHED SAID PREDETERMINED POINT ON BEING RETRACTED.