Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Thread or shank structure
Reexamination Certificate
2006-02-14
2010-11-16
Estremsky, Gary (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Thread or shank structure
C411S418000
Reexamination Certificate
active
07832971
ABSTRACT:
A threaded element (1) is provided having at least two slots (3), notches, grooves or the like that intersect the thread (2). The slots (3), notches, grooves or the like are configured in relation to the thread (2) so that they intersect the thread (2) to form a sharp cutting edge on the thread flanks (4), thus preventing reverse rotation. The slots, notches or grooves have no more than 25-times the pitch and the same rotational direction as the thread.
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Estremsky Gary
SFS Intec Holding AG
Volpe and Koenig P.C.
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