Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Washer adjacent head and having a particular shape or...
Patent
1984-05-11
1987-02-10
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Washer adjacent head and having a particular shape or...
411395, 411411, 411533, F16B 3504
Patent
active
046420126
ABSTRACT:
A fastening assembly for use in attaching articles to soft materials such as gypsum based and light weight concrete roofing. The assembly includes an anchoring element which has a high thread and an axial bore in one end. The thread has an included angle of less than 45.degree. and terminates in a sharp edge at the free end of the anchoring element. A headed screw is driven into the bore and becomes fixed to the anchoring element. A flange is integrally molded and frangibly connected to the bored end of the anchoring element, and becomes a washer upon breaking away therefrom.
REFERENCES:
patent: 126366 (1872-04-01), Wills
patent: 770022 (1904-09-01), Newhall
patent: 1138219 (1915-05-01), Hottenroth
patent: 1396611 (1921-11-01), White
patent: 1825419 (1931-09-01), Plym
patent: 2377397 (1945-06-01), Booth
patent: 3596656 (1971-08-01), Kaute
patent: 4361997 (1982-12-01), DeCaro
patent: 4543763 (1985-10-01), Ernst
Blucher William J.
Ernst Richard J.
Peterson Francis C.
Buckman Thomas W.
Illinois Tool Works Inc.
Roche David I.
Smith Gary L.
Whitcomb, Jr. Adrian H.
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