Apparatus for manufacturing a tubular body provided with a seali

Details Apparatus for manufacturing a tubular body provided with a seali Apparatus for manufacturing a tubular body provided with a seali

1980-03-26

1981-05-19

Hoag, W. E.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Opposed registering coacting female molds

264255, 264267, 277 1, 277 72FM, 277207A, 277DIG6, 425117, 425120, 425127, 425130, 425183, 425184, 425190, 425414, 425574, 425577, B29C 114, B29D 900, B29D 2302, B29F 1022

Patent

active

042682371

ABSTRACT:
Apparatus for manufacturing an at least partly tubular body, provided with an elastic sealing ring accomodated in an internal groove in said member. In a moulding cavity of a mould first the tubular member is formed of plastic synthetic material, thereafter an annular cavity is arranged in the mould adjacent the outer surface of the body and subsequently a pressurized thermoplastic deformable material is brought against the inner surface of said body which material is an elastomer at the temperature of its normal use. Thereby the body is forced into the annular cavity and is simultaneously forming the internal groove, which is filled with elastomeric material.

REFERENCES:
patent: 1641793 (1927-09-01), Watson
patent: 2986411 (1961-05-01), Anderson
patent: 3074111 (1963-01-01), Wiltshire
patent: 3293693 (1966-12-01), Ohl et al.
patent: 3677687 (1972-07-01), Siegfried et al.
patent: 3861646 (1975-01-01), Douglas
patent: 4111623 (1978-09-01), Black
patent: 4127632 (1978-11-01), Anger
patent: 4134431 (1979-01-01), Davidson et al.

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