Formation of fasteners having threads formed of coil structures

Details Formation of fasteners having threads formed of coil structures Formation of fasteners having threads formed of coil structures

1974-11-22

1976-02-17

Lanham, C. W.

Brushing, scrubbing, and general cleaning

151 14CS, B21D 5324

Patent

active

039382095

ABSTRACT:
The method of manufacturing a threaded nut having a case containing a separately formed essentially helical coil structure which forms an internal thread and is fusion bonded to the case, preferably by electron beam welding. The coil structure desirably has a locking portion which is substantially free of direct attachment to the adjacent portion of the case, with this locking portion and the surrounding portion of the case both being deformed to a condition requiring radially outward displacement thereof upon threaded engagement with a mating screw, to thereby attain a very effective self-locking action preventing unscrewing of the nut.

REFERENCES:
patent: 2262450 (1941-11-01), Caminez
patent: 2387257 (1945-10-01), Haas
patent: 2407879 (1946-09-01), Haas
patent: 2480966 (1949-09-01), Richardson et al.
patent: 2497081 (1950-02-01), Hattan
patent: 2688355 (1954-09-01), Forster
patent: 2775992 (1957-01-01), Smith
patent: 2784428 (1957-03-01), Curran
patent: 3039507 (1962-06-01), Hattan
patent: 3283350 (1966-11-01), Hattan
patent: 3611862 (1971-10-01), Walker

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