Method of forming a calibrated aperture in a molded article

Details Method of forming a calibrated aperture in a molded article Method of forming a calibrated aperture in a molded article

1974-02-05

1976-07-20

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

264328, B29F 100, B29C 500

Patent

active

039707342

ABSTRACT:
A method of molding a part having a calibrated aperture including actuating a tapered pin in an aperture of a female mold wall so that the pin engages and penetrates a desired distance into a core member disposed within the female mold, forming its own housing in the core. Molding material is then molded between the female mold wall and the core member and about the pin so that a calibrated aperture is formed in the molded article.

REFERENCES:
patent: 1832570 (1931-11-01), Montgomery
patent: 2361348 (1944-10-01), Dickson et al.
patent: 2376742 (1945-05-01), Wempe
patent: 3040384 (1962-06-01), Whittington
patent: 3136001 (1964-06-01), Gelbard
patent: 3208750 (1965-09-01), Firth et al.
patent: 3236491 (1966-02-01), Keinanen
patent: 3284556 (1966-11-01), Hay
patent: 3330004 (1967-07-01), Cloyd et al.
patent: 3752434 (1973-08-01), Herter

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