Releasable coupling

Claim 1

IN A COUPLING DEVICE OF THE CHARACTER DESCRIBED, A FEMALE COUPLING MEMBER, A MALE COUPLING MEMBER INSERTABLE INTO THE FEMALE COUPLING MEMBER, A PAIR OF RELATIVELY SLIDABLE BEARING MEMBERS IN THE FEMALE COUPLING MEMBER, RESILIENTLY YIELDABLE MEANS IN SAID FEMALE MEMBER TO URGE SAID BEARING MEMBERS TOGETHER, A PLURALITY OF BALLS BETWEEN SAID BEARING MEMBERS ENGAGING SAID MALE COUPLING MEMBER, MEANS ON SAID MALE COUPLING MEMBER CO-ACTING WITH SAID BALLS TO LOCK SAID MALE COUPLING MEMBER TO SAID BALLS, AN ELEMENT ON SAID MALE COUPLING MEMBER ADJACENT SAID MEANS TO MOVE SAID BALLS AWAY FROM SAID MALE COUPLING MEMBER WHEN SAID MALE COUPLING MEMBER IS PULLED OUT OF SAID FEMALE COUPLING MEMBER, COACTING FACES ON SAID BEARING MEMBERS HOLDING SAID BALLS IN ENGAGEMENT WITH SAID MEANS AND CONVERTING THE FORCE APPLIED TO SAID BALLS BY THE PULLING OF SAID MALE COUPLING MEMBER INTO AXIAL FORCE TO PUSH SAID BEARING MEMBERS APART AGAINST THE ACTION OF SAID RESILIENTLY YIELDABLE MEANS FOR RELEASING SAID MALE COUPLING MEMBER UPON A PREDETERMINED RELATIVE PULL ON SAID COUPLING MEMBERS, MEANS ON SAID MALE COUPLING MEMBER TO LIMIT THE INSERTION OF SAID MALE COUPLING MEMBER INTO THE FEMALE COUPLING MEMBER TO A POSITION WHERE SAID BALLS ARE INTERLOCKED WITH SAID LOCKING MEANS, AND MEANS IN SAID FEMALE COUPLING MEMBER TO SPACE SAID BALLS APART IN THE LOOSE POSITION AND TO GUIDE SAID MALE COUPLING MEMBER SUBSTANTIALLY CENTRALLY BETWEEN SAID BALLS.