Corrosion resistant pipe joint

Details Corrosion resistant pipe joint Corrosion resistant pipe joint

1979-07-18

1981-10-27

Callaghan, Thomas F.

Pipe joints or couplings

With casing, lining or protector

285342, 285354, 285355, F16L 1906

Patent

active

042969506

ABSTRACT:
Pipe joint components such as a metallic sleeve and companion nut of a compression-type pipe coupling are externally coated with a corrosion-resistant polymeric plastic. In a preferred embodiment the coating on the female of the components extends as a flexible skirt beyond the mating end face thereof to include an internally integral annular O-ring formation. The coating on the male fitting terminates behind the threads thereof in an annular ramp or boss adapted in assembly to be engaged by the O-ring coating formation of the female fitting. Cooperation of the engaging O-ring and ramp effects a moisture seal relation thereat.

REFERENCES:
patent: 1869059 (1932-07-01), Hanson
patent: 2265615 (1941-12-01), Stalter
patent: 3380763 (1968-04-01), Schmunk
patent: 3535136 (1970-10-01), Beene
patent: 3784236 (1974-01-01), Slocum
patent: 3799584 (1974-03-01), Slocum
patent: 3915478 (1975-10-01), Al et al.

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