Method of making self-locking threaded elements

Details Method of making self-locking threaded elements Method of making self-locking threaded elements

1972-07-10

1976-05-18

Lanham, C. W.

10 27R, 10 86A, B23G 900, B21K 144, B21K 156, B21K 164

Patent

active

RE0288128

ABSTRACT:
Method of making a self-locking threaded element, e.g. a screw including a strongly adhered convexly curved plastic body on its threaded surface allowing smooth assembly and giving strong frictional engagement between the element and a mating threaded surface. In the method, a stream of fine particles of heat-softenable plastic is directed against a threaded surface portion of a heated metallic element. Contacting particles are caught on the heated surface and fused by heat from the element to form a continuous plastic body which is then hardened by cooling.

REFERENCES:
patent: 3093177 (1963-06-01), Villo
patent: 3294139 (1966-12-01), Preziosi
patent: 3311085 (1967-03-01), Smith
patent: 3313017 (1967-04-01), Zingali
patent: 3316338 (1967-04-01), Rieke
patent: 3437541 (1969-04-01), Cooper et al.

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