Power operated door

Claim 1

IN COMBINATION, AN AUTOCLAVE, A DOOR, AND A DOOR OPERATING MECHANISM, SAID OPERATING MECHANISM HAVING A MOTOR, MEANS CONNECTED TO SAID MOTOR TO MOVE SAID DOOR TO CLOSED POSITION, MEANS CONNECTED TO SAID MOTOR TO LOCK SAID DOOR WHEN IT IS IN CLOSED POSITION, SAID MEANS CONNECTED TO SAID MOTOR BEING FURTHER ADAPTED TO UNLOCK SAID DOOR AND TO MOVE SAID DOOR TO OPEN POSITION WHEN IT IS UNLOCKED, SAID MEANS CONNECTED TO SAID MOTOR COMPRISING A THREADED SHAFT CONNECTED TO SAID MOTOR TO BE ROTATED THEREBY, SAID THREADED SHAFT BEING DISPOSED CONCENTRIC TO THE AXIS OF SWINGING OF SAID DOOR, A FIXED MEMBER, A CAM MEMBER THREADABLY SUPPORTED ON SAID THREADED SHAFT, A FIRST CAM ELEMENT AND A SECOND CAM ELEMENT ON SAID CAM MEMBER, A FIRST FOLLOWER MEMBER FIXED TO SAID FIXED MEMBER AND ENGAGING SAID FIRST CAM ELEMENT, AND GEAR MEANS AND SAID CAM ELEMENTS, AND SAID CAM FOLLOWER MEMBERS OPERABLY CONNECTING SAID THREADED SHAFT TO SAID LOCKING MEANS, SAID CAM ELEMENTS BEING SO RELATED THAT SAID CAM MEMBER IS NOT ROTATED RELATIVE TO SAID FIXED MEMBER UNTIL SAID THREADED SHAFT IS ROTATED A PREDETERMINED NUMBER OF TURNS IN A GIVEN DIRECTION WHEREBY SAID THREADED SHAFT MOVES SAID FOLLOWER MEMBERS ALONG SAID CAM ELEMENTS WITHOUT SWINGING SAID DOOR UNTIL SAID LOCKING MEANS IS UNLOCKED AND SAID CAM MEMBER SWINGS SAID DOOR OPEN WHEN SAID LOCKING MEANS IS UNLOCKED.