Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Thread or shank structure
Patent
1993-12-14
1994-12-13
Friedman, Carl D.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Thread or shank structure
411 2, 411383, 411900, 7165, 81451, 144353, 527412, 527411, 52749, 52750, 52DIG1, 52 98, F16B 2500, F16B 3100, E04B 500
Patent
active
053724666
ABSTRACT:
Squeaks in a floor or stair are eliminated by driving screws in the area. At least one scored screw to be driven into the squeak area combines with a specialized driving bit and a alignment and depth control fixture to eliminate the squeak. The alignment and depth control fixture can be used to direct the scored screw to the proper point while the driving bit can stop driving the screw at the desired position. After the alignment and depth control fixture is removed, the screw is broken at the prescored position. To minimize damage to an in place carpet, a tape is wrapped around the threads of the screw.
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Canfield Robert J.
Friedman Carl D.
P. Perrone, Jr. Mathew R.
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