High-strength coupling of plastic pipe to metal pipe

Details High-strength coupling of plastic pipe to metal pipe High-strength coupling of plastic pipe to metal pipe

1976-10-27

1978-01-24

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

Molded joint facilitator

29526R, 285174, 285348, F16L 4702

Patent

active

040700429

ABSTRACT:
A coupling device for coupling plastic pipe to metal pipe. A metal connecting piece has one end arranged for connection to a metal pipe, and a stop at the other end. A plastic coupling member around the connecting piece can be welded to the plastic pipe and has an open inner sealing chamber for a sealing ring. A hold-down member screwed on the connecting piece applies direct axial force onto the ring in the sealing chamber and presses the coupling member against the stop at the same time.

REFERENCES:
patent: 609383 (1898-08-01), Anderson
patent: 2227105 (1940-12-01), Pritchard
patent: 2568301 (1951-09-01), Pottberg et al.
patent: 2575685 (1951-11-01), Shugart et al.
patent: 2702201 (1955-02-01), Romanelli et al.
patent: 2776151 (1957-01-01), Harkenrider
patent: 2933428 (1960-04-01), Mueller
patent: 3479060 (1969-11-01), Westbrook et al.
patent: 3791680 (1974-02-01), Cleare
patent: 3921297 (1975-11-01), Vit
patent: 3957293 (1976-05-01), Rodgers

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