Insulated pipe couplings

Details Insulated pipe couplings Insulated pipe couplings

1984-06-14

1985-09-03

Scanlan, Jr., Richard J.

Pipe joints or couplings

Packed

Externally with clamp

285 53, 285343, 285372, 2853827, F16L 1700

Patent

active

045388415

ABSTRACT:
A coupling is provided for spaced coaxial pipe ends to be connected having a sleeve or middle ring with frusto-conical enlarged ends receiving the pipe ends to be connected coaxially thereof, elastomeric gaskets having a frusto-conical portion fitting the ends of the middle ring, follower members bearing on the gaskets to urge them into the middle ring ends, tightening members drawing the follower members toward each other, an insulating sleeve surrounding at least one pipe end with a depending radially inward spacer member and an insulating member having the shape of the follower member between the follower member and the pipe and middle ring and having a flange coaxial of the pipe extending through said follower member around the pipe. An electrical connector means may be metallurgically bonded to the middle ring. In cases when the pipe ends are anchored, one or two back-up rings may be added adjacent one or both followers with frusto-conical jaws in a frusto-conical opening in the back-up ring and an insulating member therebetween. An elastomer seal ring may be placed between the back-up rings and adjacent follower.

REFERENCES:
patent: 290844 (1883-12-01), Bowman
patent: 1986357 (1935-01-01), Perry
patent: 2269695 (1942-01-01), Scharf
patent: 3288495 (1966-11-01), Newell et al.
patent: 3594023 (1971-07-01), Yano
patent: 4070046 (1978-01-01), Felker et al.

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