Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Pilot end having means enhancing fastening or installation
Reexamination Certificate
2009-09-02
2011-12-06
Estremsky, Gary (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Pilot end having means enhancing fastening or installation
C411S387100
Reexamination Certificate
active
08070405
ABSTRACT:
An anchoring device having a tapered, at least partially threaded shank with a front end, a drilling head and at a rear end thereof, a torque applying head and an anchor coaxially enveloping a front portion of the shank. The arrangement is such that during drilling through the structure the anchor axially displaces towards the rear end of the shank, wherein the shank tightens against an inside surface of the anchor so as to expand the anchor within the bore being simultaneously drilled, for fixedly retaining thereof within the structure.
REFERENCES:
patent: 2024064 (1935-12-01), Schaefer
patent: 3116528 (1964-01-01), Poe
patent: 3453927 (1969-07-01), Moore
patent: 4817264 (1989-04-01), Worthing
patent: 4906148 (1990-03-01), Schule
patent: 5246323 (1993-09-01), Vernet et al.
patent: 6435789 (2002-08-01), Gaudron
patent: 6679661 (2004-01-01), Huang
patent: 7322783 (2008-01-01), Pearce et al.
patent: 2005/0084360 (2005-04-01), Panasik et al.
patent: 2006/0067803 (2006-03-01), Hsu
Estremsky Gary
Hess Robert J.
Hess Patent Law Firm PC
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