Plastic socket pipe part and method of manufacturing same

Details Plastic socket pipe part and method of manufacturing same Plastic socket pipe part and method of manufacturing same

1981-03-03

1983-01-18

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

264299, 425DIG218, B29D 2300

Patent

active

043691595

ABSTRACT:
A thermoplastic socket pipe part with a sealing member comprising a sealing head and sealing sleeve, the sealing head being retained by means of a retaining ring, which retaining ring is formed by bending back the end part of an extruded plastic tube provided with three widenings with decreasing inner diameter as seen from the free end of the plastic tube.

REFERENCES:
patent: 3349805 (1967-10-01), Fried
patent: 3418409 (1968-12-01), Hesse
patent: 3557275 (1971-01-01), Longshaw
patent: 3715800 (1973-02-01), Leopold
patent: 3857589 (1974-12-01), Ostenbrink
patent: 3929958 (1975-12-01), Parmann
patent: 4046387 (1977-09-01), Lee
patent: 4156710 (1979-05-01), Carroll
patent: 4193426 (1980-03-01), Irmer

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