Overtravel mechanism

Claim 1

IN COMBINATION WITH A ROTATABLE MEMBER ARRANGED TO BE TURNED THROUGH A RANGE OF A PLURALITY OF TURNS, AND HAVING AN INTERNAL STOP AT THE END OF SAID TURNING RANGE; MEANS FOR PROVIDING AN EXPANDED RATIO BETWEEN THE ROTATIONS OF AN INPUT SHAFT AND THE ROTATIONS OF SAID ROTATABLE MEMBER OVER A SELECTED RANGE COMPRISING: A HOUSING ARRANGED TO SUPPORT SAID ROTATABLE MEMBER AND TO HAVE AN INPUT SHAFT EXTENDING ROTATABLY AND COAXIALLY THERETO; AN INPUT COUPLING RING FIXED TO SAID INPUT SHAFT WITHIN SAID HOUSING, A LOCKING APERTURE BEING FORMED THROUGH A CIRCUMFERENTIAL PORTION OF SAID COUPLING RING; A PINION FIXED TO SAID INPUT SHAFT; A SHAFT EXTENDING FROM SAID ROTATABLE MEMBER COAXIALLY INTO SAID HOUSING OPPOSITE SAID INPUT SHAFT; A COUPLING ARM HOLDER FIXED TO SAID ROTATABLE MEMBER SHAFT; A COUPLING ARM PIVOTALLY FIXED TO SAID COUPLING ARM HOLDER; A LOCKING ROLLER ROTATABLY SECURED ON SAID COUPLING ARM, SAID ROLLER BEING POSITIONED PARALLEL TO THE SAID ROTATABLE MEMBER SHAFT; MEANS FOR RESILIENTLY URGING SAID ROLLER TOWARD THE AXIS OF ROTATION OF SAID ROTATABLE MEMBER; SAID HOUSING HAVING A LOCKING RECESS FORMED THEREIN ADAPTED FOR ENGAGEMENT WITH SAID LOCKING ROLLER; A PLANETARY CARRIER ROTATABLY MOUNTED ON SAID ROTATABLE MEMBER SHAFT, SAID PLANETARY CARRIER HAVING AN ALINEMENT APERTURE FORMED THEREIN ADAPTED FOR ENGAGEMENT WITH SAID LOCKING ROLLER MEMBER ALTERNATIVELY WITH THE ENGAGEMENT OF SAID LOCKING ROLLER MEMBER WITH SAID LOCKING RECESS FORMED IN SAID HOUSING; A FIRST DRIVEN PLANETARY GEAR ROTATABLY SUPPORTED ON SAID PLANETARY CARRIER IN POSITION TO ENGAGE SAID INPUT SHAFT PINION; A DRIVING PLANETARY PINION FIXEDLY CONNECTED TO SAID FIRST PLANETARY GEAR IN COAXIAL RELATIONSHIP THERETO; AND A PLANETARY SUN GEAR MESHING WITH SAID DRIVING PLANETARY PINION AND FIXED TO SAID ROTATABLE MEMBER SHAFT, WHEREBY SAID LOCKING ROLLER ENGAGES SAID LOCKING RECESS TO LOCK SAID ROTATABLE MEMBER SHAFT TO SAID HOUSING WHEN SAID ROTATABLE MEMBER REACHES THE END OF ITS TURNING RANGE AND SAID PLANETARY CARRIER ROTATES WITH SAID INPUT SHAFT RELATIVE TO SAID ROTATABLE MEMBER SHAFT.