Mechanical coupling

Claim 1

A MECHANICAL DEVICE FOR COUPLING A PLURALITY OF ELEMENTS AND BEING RELEASABLE UNDER LOAD, COMPRISING: MALE AND FEMALE CONNECTING UNITS, SAID FEMALE CONNECTING UNIT BEING RELEASABLY CONNECTED WITH SAID MALE UNIT AND HAVING PROTRUDING THEREFROM AN OPERATING DETENT MEMBER MOVABLE RELATIVE THERETO AND OPERABLE FOR CAUSING SAID FEMALE CONNECTING UNIT TO RELEASE SAID MALE CONNECTING UNIT, AND SAID MALE UNIT HAVING AN APERTURE EXTENDING TRANSVERSELY THERETHROUGH, FIRST MEANS CONNECTED TO SAID FEMALE CONNECTING UNIT AND TO ONE OF THE ELEMENTS TO BE COUPLED, SECOND MEANS CONNECTED TO SAID MALE CONNECTING UNIT AND TO THE OTHER OF THE ELEMENTS TO BE COUPLED, ACTUATING MEANS EXTENDING ADJACENT SAID MALE CONNECTING UNIT, INCLUDING A CAM PORTION AND PIVOTALLY CONNECTED TO SAID FIRST MEANS FOR MOVEMENT OF SAID CAM PORTION RELATIVE TO AND INTO ENGAGEMENT WITH SAID OPERATING DETENT MEMBER, SAID ACTUATING MEANS BEING SELECTIVELY MOVABLE FROM A LATCHED POSITION CAUSING SAID CAM PORTION TO ENGAGE AND OPERATE SAID OPERATING DETENT MEMBER, AND MOVABLE PIN MEANS YIELDABLY ATTACHED TO SAID ACTUATING MEANS SO AS TO BE MOVABLE RELATIVE THERETO AND POSITIONED TO EXTEND THROUGH SAID APERTURE IN SAID MALE UNIT FOR RESTRAINING SAID ACTUATING MEANS FROM MOVEMENT FROM SAID LATCHED POSITION, SAID PIN MEANS BEING WITHDRAWABLE FROM SAID MALE CONNECTING UNIT TO PERMIT MOVEMENT OF SAID ACTUATING MEANS FROM SAID LATCHED POSITION.