Pipe coupling system

Details Pipe coupling system Pipe coupling system

2006-09-29

2010-06-08

Hewitt, James M (Department: 3679)

Pipe joints or couplings

Packed

Screw

C285S333000, C285S369000, C285S383000, C277S651000

Reexamination Certificate

active

07731246

ABSTRACT:
A tubular coupling system and method; the system and method in at least certain aspects, using a coupling member with an interior protective ring that has at least one inner energizing member which, upon compression, forces the body of the coupling member against an interior wall of the coupling thereby inhibiting corrosive material from contacting the coupling's interior wall or, in the event some corrosive material does enter this area, holding the interior protective ring against the coupling's interior wall so that the corrosive material remains in and does not exit this area, thus inhibiting or preventing a continuous flow of corrosive material.

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Duoline HT2. Rice Engineering & Operating Ltd. Dec. 1985. 2 pp.
Duoline Stops Corrosion . . . Reduces Cost. Rice Engineering Corporation. 6 pp. 1995.
Duoline Lining and Riceline Tubing for internal corrosion resistance. Rice Engineering Corporation. 4 pp. Mar. 1995.

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