Resilient releasable mechanism

Claim 1

IN COMBINATION, A BASAL MEMBER AND A RECEPTACLE TO BE RELEASABLY SECURED TOGETHER WITH THE RECEPTACLE SUPERIMPOSED ON THE TOP OF SAID BASAL MEMBER, SAID MEMBER HAVING A BOLT HOLE WITH A PLANAR AREA THEREAROUND AT THE TOP OF SAID MEMBER AND HAVING MEANS RADIALLY OUTWARDLY FROM SAID BOLT HOLE OFFSET AT THE TOP OF SAID MEMBER FROM SAID PLANAR AREA OVERLYING PART OF AND RETAINING SAID RECEPTACLE FROM BEING LIFTED FROM SAID MEMBER, AND SAID RECEPTACLE HAVING A MEDIAL UPWARDLY PROJECTING THREADED SOCKET THE AXIS WHEREOF IS PERPENDICULAR TO SAID PLANAR AREA AND SUBSTANTIALLY COAXIAL WITH SAID HOLE, SAID SOCKET BEING LOCATED ENTIRELY ABOVE SAID MEMBER FOR RECEIVING A BOLT PROJECTING THEREIN FROM SAID BOLT HOLE, SAID RECEPTACLE HAVING A SUBSTANTIALLY FLAT SEATING BODY ABOVE SAID PLANAR AREA OF THE MEMBER EXTENDING RADIALLY OUTWARDLY FROM SAID SOCKET AT THE BOTTOM THEREOF, SAID BODY PROVIDING RADIALLY DIRECTED NORMALLY UNFLEXED RESILIENT LEGS OF INVERTED U-SHAPED ABOVE SAID MEMBER OF LESS WIDTH THAN SAID SEATING BODY, SAID BASAL MEMBER AND LEGS BOTH HAVING MEANS IN A DIRECTION OPPOSITE TO THE DIRECTION OF THE CLOSED END OF THE U AND ANGULARLY DISPOSED TO SAID PLANAR AREA PROVIDING POSITIVE COOPERATIVE INTER-ENGAGEMENT WITH EACH OTHER RESPECTIVELY BOTH RESTRAINING THE RECEPTACLE FROM INADVERTENT DISPLACEMENT IN ANY LATERAL DIRECTION AND LOCKING SAID RECEPTACLE AGAINST ROTATION IN EITHER ROTATIVE DIRECTION, SAID RECEPTACLE BEING ROTATABLE ABOUT SAID AXIS TO AND FROM SAID POSITION OF POSITIVE INTERENGAGEMENT, AND SAID LEGS BEING RESILIENTLY FLEXIBLE FROM NORMAL UNFLEXED CONDITION IN APPROACH TO AND DEPARTURE FROM SAID POSITION AND EFFECTIVE IN NORMAL CONDITION WITHOUT FLEXURE AT SAID POSITION TO POSITIVELY INTERENGAGE WITH SAID MEMBER, SAID POSITIVE INTER-ENGAGEMENT BEING RELEASABLY ONLY BY INTENTIONAL MANUAL FLEXING OF SAID LEGS FROM SAID NORMAL CONDITION.