Pipe coupling device and assembly

Details Pipe coupling device and assembly Pipe coupling device and assembly

2002-03-07

2003-05-20

Nicholson, Eric K. (Department: 3679)

Pipe joints or couplings

Having plural independent paths

For concentric tubes or pipes

C285S133110, C285S123100

Reexamination Certificate

active

06565127

ABSTRACT:

OVERVIEW
A pipe coupling and assembly according to the present invention is well suited for use with coaxial pipe systems, such as that disclosed by U.S. Pat. Nos. 5,297,896 and 5,927,762, both to Webb and incorporated herein by reference.


REFERENCES:
patent: 4886305 (1989-12-01), Martin
patent: 5203384 (1993-04-01), Hansen
patent: 5265652 (1993-11-01), Brunella
patent: 5277455 (1994-01-01), Graves et al.
patent: 5398976 (1995-03-01), Webb
patent: 5427474 (1995-06-01), Silvers
patent: 5449204 (1995-09-01), Greene et al.
patent: 5628532 (1997-05-01), Ashcraft
patent: 5687993 (1997-11-01), Brim
patent: 5927762 (1999-07-01), Webb
patent: 6428054 (2002-08-01), Zappa et al.

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