Dome fastener with floating nut

Claim 1

A SELF-ALIGNING FASTENER DEVICE COMPRISING: A HOLLOW MOUNTING MEMBER HAVING AN OPEN END AND RADIALLY AND INWARDLY EXTENDING LONGITUDINAL TONGUE MEANS HAVING SHOULDERS AT ONE END THEREOF AND AN INTERNAL ANNULAR GROOVE PROVIDED BY SAID MOUNTING MEMBER ADJACENT SAID SHOULDERS, SAID TONGUE MEANS FORMING LONGITUDINAL GROOVES THEREBETWEEN, SAID MOUNTING MEMBER HAVING ABUTMENT MEANS OVERLYING AND SPACED FROM SAID TONGUE MEANS; AN INTERNALLY THREADED INSERT MEMBER DISPOSED WITHIN SAID MOUNTING MEMBER, SAID INSERT MEMBER HAVING LONGITUDINALLY EXTENDING TONGUE MEANS AND RADIALLY PROJECTING TONGUE MEANS, SAID RADIAL TONGUE MEANS OF SAID INSERT MEMBER BEING ADAPTED TO BE AXIALLY DISPLACED ALONG SAID LONGITUDINAL GROOVES PROVIDED BY SAID MOUNTING MEMBER AND SEAT UPON SAID SHOULDERS PROVIDED AT THE ENDS OF SAID TONGUE MEANS OF SAID MOUNTING MEMBER SO AS TO INTERFIT IN SAID ANNULAR GROOVE, SAID RADIAL TONGUE MEANS OF SAID INSERT MEMBER HAVING A THICKNESS LESS THAN THE HEIGHT OF SAID ANNULAR GROOVE AND A MAXIMUM DIAMETER ACROSS SAID TONGUE MEANS LESS THAN THE MAXIMUM DIAMETER OF SAID ANNULAR GROOVE THEREBY PERMITTING SLIGHT ANGULAR AND LATERAL MOVEMENT OF THE INSERT MEMBER RELATIVE TO SAID MOUNTING MEMBER; A RETAINER MEMBER DISPOSED IN SAID OPEN END TO SECURE SAID INSERT MEMBER IN SAID MOUNTING MEMBER, SAID RETAINER MEMBER HAVING GROOVE MEANS, SAID RETAINER MEMBER GROOVE MEANS BEING INTERENGAGED WITH SAID LONGITUDINAL TONGUE OF SAID INSERT MEMBER, SAID GROOVE MEANS CARRIED BY SAID RETAINER MEMBER HAVING A WIDTH SLIGHTLY GREATER THAN THE WIDTH OF SAID LONGITUDINAL TONGUE MEANS CARRIED BY SAID INSERT MEMBER THEREBY PERMITTING LIMITED LATERAL MOVEMENT OF SAID INSERT MEMBER RELATIVE TO SAID RETAINER MEMBER, SAID RETAINER MEMBER HAVING TONGUE MEANS INTERENGAGED WITH SAID LONGITUDINAL GROOVES PROVIDED BY SAID MOUNTING MEMBER THEREBY PREVENTING ROTATIONAL MOVEMENT OF SAID RETAINER MEMBER IN SAID MOUNTING MEMBER WHILE PERMITTING LIMITED LATERAL AND ANGULAR MOVEMENT OF THE INSERT MEMBER FOR ALIGNED RECEPTION OF AN EXTERNALLY THREADED FASTENER.