Fasteners having threads formed of essentially helical coil stru

Details Fasteners having threads formed of essentially helical coil stru Fasteners having threads formed of essentially helical coil stru

1975-08-18

1977-08-09

Britts, Ramon S.

Brushing, scrubbing, and general cleaning

10 86A, F16B 3938

Patent

active

040404625

ABSTRACT:
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 the nut.

REFERENCES:
patent: 736368 (1903-08-01), Donally
patent: 2262450 (1941-11-01), Caminez
patent: 2407879 (1946-09-01), Haas
patent: 2497081 (1950-02-01), Hattan
patent: 2775992 (1957-01-01), Smith
patent: 3039507 (1962-06-01), Hattan
patent: 3272250 (1966-09-01), Hattan
patent: 3283350 (1966-11-01), Hattan
patent: 3316795 (1967-05-01), Tann
patent: 3611862 (1971-10-01), Walker

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