Rotatable stud fastener

Claim 1

A FASTENER ASSEMBLY FOR SECURING TWO MEMBERS, ONE OF WHICH HAS A THREADED RECESS IN ASSEMBLED RELATIONSHIP INCLUDING IN COMBINATION A RECEPTACLE COMPRISING A BODY HAVING A LONGITUDINAL AXIS AND HAVING EXTERNAL SCREW THREADS ALONG ITS LENGTH, SAID BODY BEING PROVIDED WITH A PAIR OF LEGS HAVING WALLS FORMING A FIRST SLOT EXTENDING THROUGH SAID BODY AND FROM ONE END THEREOF FOR A DISTANCE ALONG THE LONGITUDINAL AXIS TO PROVIDE A SLOT BASE, MEANS FORMING A SECOND SLOT EXTENDING AZIALLY THROUGH SAID BODY INTO AND ALONG THE WALLS OF SAID FIRST SLOT, SAID BODY BEING DISPOSED IN SAID RECESS, A FASTENER ELEMENT CARRIED BY THE OTHER MEMBER, SAID FASTENER ELEMENT HAVING A T-HEAD ADAPTED TO BE INSERTED INTO SAID RECEPTACLE THROUGH SAID SECOND SLOT, SAID FASTENER ELEMENT BEING ADAPTED TO BE ROTATED TO BRING SAID HEAD INTO ENGAGEMENT WITH THE WALLS OF SAID SLOT, SPRING MEANS DISPOSED IN SAID RECESS BELOW SAID T-HEAD, AND INTERENGAGEABLE DETENTING MEANS BETWEEN SAID HEAD AND SAID SPRING MEANS ADAPTED TO ENGAGE IN RESPONSE TO THE ACTION OF SAID SPRING MEANS WHEN SAID HEAD ENGAGES SAID WALLS RELEASABLY TO RETAIN SAID FASTENER ELEMENT IN A POSITION WITH ITS HEAD IN ENGAGEMENT WITH THE WALLS OF SAID SECOND SLOT.