Auxiliary coupling and de-coupling for fluid drive

Claim 1

IN A SYSTEM THAT INCLUDES MULTIPLE ROTARY MOTORS OPERABLE IN RESPONSE TO APPLICATION OF FLUID PRESSURE THERETO, AND IN COMBINATION WITH EACH MOTOR, AUXILIARY CONTROL STRUCTURE TO CONTROL ROTATION OF SAID MOTOR, MEANS FOR ALTERING A COUPLING RELATIONSHIP BETWEEN A MEMBER ROTATABLE WITH THE MOTOR AND SAID AUXILIARY STRUCTURE AND INCLUDING A PRESSURE RESPONSIVE COUPLING ELEMENT SUPPORTED BY SAID STRUCTURE AND HAVING A FIRST POSITION IN WHICH THE MOTOR IS COUPLED TO SAID AUXILIARY STRUCTURE AND A SECOND POSITION IN WHICH THE MOTOR AND SAID AUXILIARY STRUCTURE ARE DE-COUPLED, SAID AUXILIARY STRUCTURE BEING IN THE FORM OF A STOP FOR BLOCKING ROTATION OF SAID COUPLING ELEMENT IN SAID FIRST POSITION AND OTHER MEANS FOR COMMUNICATING PRESSURE TO EFFECT MOVEMENT OF THE COUPLING ELEMENT ASSOCIATED WITH ANY SELECTED MOTOR TO SAID SECOND POSITION AND FOR SIMULTANEOUSLY COMMUNICATING PRESSURE TO EFFECT MOVEMENT OF THE COUPLING ELEMENT ASSOCIATED WITH A NON-SELECTED MOTOR TO SAID FIRST POSITION ALL IN RESPONSE TO FLUID PRESSURE APPLICATION TO SAID SELECTED MOTOR.