Electrically insulated pipe joint

Details Electrically insulated pipe joint Electrically insulated pipe joint

1987-05-13

1989-04-25

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

Insulated

285 55, 285292, 285328, 285382, 174 85, A16L 2100

Patent

active

048241474

ABSTRACT:
An electrically insulated pipe joint comprises first and second metal tubular parts each having a flange at one end. The first and second tubular parts are coupled by a metal coupling sleeve surrounding the flanges and narrowing behind the flanges. A metal ring is located between both flanges, the outer diameter of which is greater than that of both flanges and which has its inner periphery in contact with the coupling sleeve. At both sides of the metal ring an electrically insulating seal ring is disposed. Further, an electrical insulation is disposed between the coupling sleeve and the first and second tubular parts.

REFERENCES:
patent: 1035212 (1912-08-01), McCarthy
patent: 1170920 (1916-02-01), McCarthy
patent: 1231202 (1917-06-01), Saylor
patent: 3441293 (1969-04-01), Bagnulo
patent: 3503632 (1970-03-01), Braun
patent: 3871687 (1975-03-01), Dolkree
Prochin & Leaflet, 4 pp. for Monolithic Insulating Joints.

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