Masonry anchor bolt

Claim 1

AN ANCHOR-FASTENER COMPRISING, IN COMBINATION: (A) A CYLINDRICAL BODY MEMBER HAVING MEANS ON THE FRONT END THEREOF FOR PROVIDING A LONGITUDINAL FORCE TENDING TO WITHDRAWA SAID BODY MEMBER FROM A RECEPTACLE THEREFOR, SAID BODY MEMBER ALSO HAVING AN AXIALLY EXTENDING PORTION OF REDUCED RADIUS INTERMEDIATE THE ENDS THEREOF AND AN OUTWARD FLARING PORTION INTERMEDIATE SAID PORTION OF REDUCED RADIUS AND THE REAR END THEREOF; (B) A PLURALITY OF RESILIENT SEGMENT MEMBERS OF SUBSTANTIALLY CONSTANT THICKNESS AND A LENGTH SUBSTANTIALLY EQUAL TO THE LENGTH OF THE PORTION OF REDUCED RADIUS ON SAID BODY MEMBER AND SLIDABLY DISPOSED THEREON, SAID SEGMENT MEMBERS ALSO HAVING (1) A SUBSTANTIALLY CONSTANT RADIUS OF CURVATURE LARGER THAN THE RADIUS OF SAID PORTION OF REDUCED RADIUS, AND (2) INWARDLY EXTENDING BIASING MEANS DISPOSE DIN PROXIMITY TO THE FRONT ENDS THEREOF, SAID SEGMENT MEMBERS BEING OPERABLE, UPON INSERTION OF THE BODY MEMBER AND SEGMENTS INTO A RECEPTACLE THEREFOR, TO BE COMPRESSED INTO A PORTION OF REDUCED RADIUS AND TO PROVIDE A SUBSTANTIAL OUTWARDLY DIRECTED RECEPTACLE WALL ENGAGING BIASING FORCE; AND (C) MEANS FOR HOLDING SAID SEGMENTS ON THE REDUCED PORTION OF SAID BODY MEMBER PRIOR TO INSERTION OF SAID BODY MEMBER INTO A RECEPTACLE THEREFOR.