Self-tapping, self-aligning thread repair insert

Details Self-tapping, self-aligning thread repair insert Self-tapping, self-aligning thread repair insert

1986-09-08

1988-03-15

Wilson, Neill

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

Threaded fastener locked to a discreet structure

Nut, and means to engage substructure on its opposite faces...

411386, F16B 3712

Patent

active

047309687

ABSTRACT:
A self-tapping, self-aligning thread repair insert is disclosed. The insert is an annular sleeve having a threaded interior surface, a partially threaded exterior surface, and an opening. The exterior surface has a tapered portion between a straight threaded portion and a straight thread-free portion. The thread-free portion and the opening are adjacent an end of the sleeve. The thread-free portion is free of threads for a distance of at least 1.5 thread widths from the end of the sleeve. The sleeve is made of a 400 series stainless steel. The sleeve is case hardened.

REFERENCES:
patent: 2292195 (1942-08-01), Brown
patent: 2639179 (1953-05-01), Phelps
patent: 2823574 (1958-02-01), Rosan
"Tap-Lok (TM) Inserts" brochure by Groov-Pin Corp., copyright 1980, p. 6.
"Plastics Performers" brochure by Groov-Pin Corp.
"Whip-L Products" brochure, pp. 22-24.
"Pioneer E-Z LOK" brochure, pp. 30-31.
"Surface Hardening", pub. No. 39.04 by Crane, copyright 1965.

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