Door open-and-close mechanism

Claim 1

A DOOR OPENING AND CLOSING MECHANISM FOR A DOOR ON THE FRAME OF A CAR, COMPRISING: A REVERSIBLY ROTATABLE MOTOR, A WORM GEAR CONNECTED TO THE OUTPUT SHAFT OF SAID MOTOR, A WORM WHEEL MESHING WITH SAID WORM GEAR, A PINION GEAR FIXED COAXIALLY TO SAID WORM WHEEL, A SEGMENT GEAR MESHING WITH SAID PINION, A SWING LEVER INTEGRAL WITH SAID SEGMENT GEAR, REVERSIBLY MOVABLE MEANS OPERABLE TO OPEN AND CLOSE SAID DOOR AGAINST THE CAR FRAME, A SPRING CONNECTED BETWEEN SAID SWING LEVER AND SAID REVERSIBLY MOVABLE MEANS FOR THE RESILIENT TRANSFER OF MOVEMENT OF SAID SWING LEVER TO OPERATE SAID REVERSIBLE MOVABLE MEANS, A DOOR LOCKING MEANS OPERABLE TO LOCK AND RELEASE THE DOOR, AND A FLEXIBLE CABLE MEANS CONNECTED BETWEEN SAID SWING LEVER AND SAID DOOR LOCKING MEANS TO TRANSFER MOVEMENT OF SAID SWING LEVER WITHOUT LOST MOTION TO OPERATE SAID DOOR LOCKING MEANS, WHEREBY THE SWINGING MOVEMENT OF SAID SWING LEVER IS FIRSTLY TRANSMITTED TO RELEASE THE DOOR LOCK AND WHEREBY THE RELEASING IS FOLLOWED BY DOOR OPENING ACTION.