Remotely controlled closures

Claim 1

A REMOTELY CONTROLLED CLOSURE SYSTEM COMPRISING AT LEAST ONE MOVABLE CLOSURE, ELECTRIC MOTOR MEANS FOR MOVING THE SAME TO OPEN AND CLOSED PORTIONS, AND MECHANICAL AND ELECTRICAL LINKAGE MEANS CONNECTING SAID MOTOR TO SAID CLOSURE, AND IN WHICH SAID MECHANICAL LINKAGE INCLUDES A CAM CARRYING CRANK PINS; CONNECTING RODS MOUNTED AT ONE END ON SAID CRANK PINS AND AT THE OTHER END ON BELL CRANK LEVERS, SAID BELL CRANK LEVERS BEING ALSO CONNECTED TO SAID CLOSURE, WHEREBY ROTATION OF SAID CAM IN ONE DIRECTION CAUSES SAID CLOSURE TO OPEN AND ROTATION IN THE OPPOSITE DIRECTION OF SAID CAM CAUSES AND CLOSURE TO CLOSE; A DRIVEN CLUTCH MEMBER ENGAGING SAID CAM AND PROVIDING BOTH ADJUSTABLE AND RELEASABLE FRICTIONAL TORQUE TO SAID CAM; AND MEANS WHEREBY SAID CAM CAN BE MECHANICALLY LOCKED AT PREDETERMINED POSITIONS; AND FURTHER IN WHICH SAIS ELECTRICAL LINKAGE INCLUDES LIMITING SWITCHED TO LIMIT THE TRAVEL OF SAID MOTOR TO TERMINAL POSITIONS CORRESPONDING TO PRESELECTED POSITIONS OF SAID CLOSURE.