Tanged screw thread insert with improved removability

Details Tanged screw thread insert with improved removability Tanged screw thread insert with improved removability

2011-01-04

2011-01-04

Reese, David (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Internally threaded fastener element, e.g., nut, etc.

Thread structure

C411S929100, C411S178000

Reexamination Certificate

active

07862283

ABSTRACT:
A helical-shaped insert to engage a threaded fastener to a receiving member includes a helical coil having a plurality of coil sections having inner and outer surfaces forming a thread shape, and opposing first and second coil end sections. A removable tang extends radially inward from the first coil end section. A continuously curved surface at a finished end of the second coil end section forms a tangent point where the continuously curved surface tangentially meets the second coil end section outer surface. A notch in the first coil end section proximate to the tang and positioned between the inner and outer surfaces permits removal of the tang by mechanical failure at the notch. A second notch in the second coil end section and the continuously curved surface assist coil removal.

REFERENCES:
patent: 2390514 (1945-12-01), Cram
patent: 2586007 (1952-02-01), Cram et al.
patent: 3177782 (1965-04-01), Sampson
patent: 6146073 (2000-11-01), Kobusch
patent: 6171040 (2001-01-01), Sato
patent: 6588305 (2003-07-01), Giannakakos et al.
patent: 6726421 (2004-04-01), Giannakakos et al.
patent: 2003/0049096 (2003-03-01), Giannakakos et al.
patent: 0140812 (1985-05-01), None
patent: 0992694 (2000-04-01), None
European Search Report dated Jun. 26, 2006 re EP Application No. 06111996.2.

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