Screw comprising a thread-forming thread, blank for the...

Details Screw comprising a thread-forming thread, blank for the... Screw comprising a thread-forming thread, blank for the...

2011-06-14

2011-06-14

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

C411S426000

Reexamination Certificate

active

07959393

ABSTRACT:
A screw for the creation of a metric thread in a female element, includes a load-bearing (metric) thread portion and a forming thread portion which is tapered to the tip of the screw. The flights of the tapered thread portion are sharp-edged and fully formed.

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patent: 5356253 (1994-10-01), Whitesell
patent: 5395195 (1995-03-01), Fulmer
patent: 5599149 (1997-02-01), Clemente
patent: 5772374 (1998-06-01), Ide et al.
patent: 6120227 (2000-09-01), Murase et al.
patent: 6478520 (2002-11-01), Sala
patent: 985463 (1976-03-01), None
patent: 1973200 (1967-11-01), None
patent: 8804654 (1988-09-01), None
patent: 19525733 (1997-01-01), None

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