Self-locking threaded fastener

Details Self-locking threaded fastener Self-locking threaded fastener

1990-10-22

1992-07-28

Wilson, Neill R.

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

Having structure to restrict rotation of threaded, mating...

Comprising a thread lock

411294, 411324, 411909, 411947, F16B 3934, F16B 3904

Patent

active

051336316

ABSTRACT:
This invention provides a temperature responsive self-locking fastener which includes a threaded shank and a threaded mating element both having approximately equal coefficients of thermal expansion and a temperature responsive locking member having a coefficient of thermal expansion different than that of the threaded shank and the mating element. The locking member expands relative to the threaded shank and the mating element at the operating temperature to prevent disengagement of the locking fastener. At the installation temperature, the locking fastener can be easily installed or removed even after one or more cycles between the operating and the installation temperature.

REFERENCES:
patent: Re23878 (1954-09-01), Burdick
patent: 2462603 (1949-02-01), Boots
patent: 2539887 (1951-01-01), Boots
patent: 2585621 (1952-02-01), Brandon
patent: 2607956 (1952-08-01), Brutus
patent: 2775281 (1956-12-01), Smith
patent: 3144066 (1964-08-01), Van Hecke
patent: 3269443 (1966-08-01), Coyle
patent: 3416823 (1968-12-01), Auer
patent: 4472095 (1984-09-01), Molina

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