Sealing system between a metal insert and plastic coupling, and

Details Sealing system between a metal insert and plastic coupling, and Sealing system between a metal insert and plastic coupling, and

1987-06-24

1988-12-13

Arola, Dave W.

Pipe joints or couplings

Particular interface

Interlocked or overlapped

285392, 285423, F16L 2500

Patent

active

047905735

ABSTRACT:
Provision is made for installation, in the interior of a plastic coupling, of a cylindrical tubular-shaped metal insert with internal threads and having an externally knurled external flange at one end, followed by an intermediate section whereon external teethlike serrations or the like are provided, finally followed by a circumferential recess to house an elastic sealing ring, which insert is installed in the plastic coupling after the latter has been molded, and by embedding through transmission of pressure and heat.

REFERENCES:
patent: 1895022 (1933-01-01), Chandler
patent: 2954246 (1970-09-01), Totaoh et al.
patent: 3936078 (1976-02-01), Wallyn
patent: 4428602 (1984-01-01), Lambut et al.

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