Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Thread or shank structure
Reexamination Certificate
2005-03-01
2005-03-01
Saether, Flemming (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Thread or shank structure
C411S311000, C411S412000
Reexamination Certificate
active
06860690
ABSTRACT:
A screw member having a loosening prevention function is provided to improve a fastening power and a relative strength in thread connection. With an arrangement to provide a first crest portion and a second crest portion at the opposite ends of a thread point, a first screw member generates a loosening prevention effect due to elastic deformation of the first crest portion and the second crest portion, with the entire thread flank from the base portion to the point brought into contact with a second screw member on the both surfaces of the thread flanks. With this arrangement, a strong fastening power can be obtained, and a clamping force applied to the thread is distributed over the thread, thereby enabling improvement in the relative strength in thread connection.
REFERENCES:
patent: 410697 (1889-09-01), Rogers
patent: 422307 (1890-02-01), Libbey
patent: 793824 (1905-07-01), Culliney
patent: 2787796 (1957-04-01), Rosan
patent: 3517717 (1970-06-01), Orlomoski
patent: 3850215 (1974-11-01), Orlomoski
patent: 4764067 (1988-08-01), Kawashima
patent: 6216510 (2001-04-01), Hashimoto
patent: 6514025 (2003-02-01), Watanabe
patent: 0 930 441 (1999-07-01), None
patent: 56-19492 (1981-05-01), None
patent: 3-46686 (1991-07-01), None
patent: 07083224 (1995-03-01), None
patent: 07139536 (1995-05-01), None
patent: 07197924 (1995-08-01), None
McCormick Paulding & Huber LLP
Saether Flemming
Watanabe Tetsuya
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