Quick fastening device for structural members

Claim 1

A FASTENING DEVICE FOR SECURING TOGETHER OVERLAPPING MEMBERS, EACH OF WHICH HAS A REGISTERING OPENING THERETHROUGH, COMPRISING A SOCKET MEMBER ADAPTED TO BE CARRIED IN THE OPENING OF ONE OF SAID OVERLAPPING MEMBERS AND EXTENDING INTO THE REGISTERING OPENING IN ANOTHER OF SAID OVERLAPPING MEMBERS, SAID SOCKET MEMBER HAVING AN ENCLOSED SOCKET CHAMBER AND UPPER AND LOWER SURFACES WITH ELONGATE NON-ALIGNED APERTURES THEREIN; A BOLT MEMBER HAVING A HEAD END COMPLEMENTARILY CONFIGURED TO SAID LOWER SURFACE APERTURE AND ADAPTED TO PASS THERETHROUGH AND HAVING SHOULDER PORTIONS COMPLEMENTARY TO PORTIONS OF SAID SOCKET CHAMBER AND ADAPTED TO BE ROTATED INTO SEATING ENGAGEMENT IN SAID SOCKET CHAMBER AFTER INSERTION THROUGH SAID LOWER SURFACE APERTURE; MEANS SECURING SAID BOLT MEMBER TO ANOTHER OF SAID OVERLAPPING MEMBERS; AND RESILIENTLY BIASED AXIALLY MOVABLE RELEASABLE LOCKING MEANS WITHIN SAID BOLT HEAD PORTION COMPLEMENTARILY CONFIGURED TO AND ENGAGEABLE WITH SAID SOCKET MEMBER UPPER SURFACE APERTURE UPON ROTATION OF SAID BOLT MEMBER HEAD PORTION INTO SEATING ENGAGEMENT WITHIN SAID SOCKET CHAMBER WHEREBY SAID BOLT MEMBER IS RELEASABLY LOCKED TO SAID SOCKET MEMBER.