Pipe joints or couplings – With assembly means or feature
Patent
1990-06-12
1992-03-24
Reese, Randolph A.
Pipe joints or couplings
With assembly means or feature
285 31, 285 93, 285 96, 285101, 285111, F16L 3500
Patent
active
050981323
ABSTRACT:
An improved length compensating joint suitable for use in repairing pipelines includes an inner tubular member, an outer tubular member which receives the inner member in close fitting engagement, seals disposed radially and axially between the inner and outer members define annular piston areas for providing selective relative motion between the inner and outer members, a pressure responsive locking piston with a camming surface for urging gripping elements into locking engagement with the inner member, a metal-to-metal seal between the inner and outer members which can be deenergized during extension or retraction operations and a test port for verifying the integrity of the metal-to-metal seal after installation. Additionally, a second embodiment provides an alternative metal-to-metal seal configuration which can also be deenergized during extension and retraction operations.
REFERENCES:
patent: 3647226 (1972-03-01), Middelkoop et al.
patent: 3711123 (1973-01-01), Arnold
patent: 4059288 (1977-11-01), Mohr
patent: 4078832 (1978-03-01), Wittman
patent: 4200312 (1980-04-01), Watkins
patent: 4436325 (1984-03-01), Miller
patent: 4696494 (1987-09-01), Schmitz et al.
patent: 4720124 (1988-01-01), Taylor et al.
patent: 4761023 (1988-08-01), Troxell, Jr.
patent: 4877272 (1989-10-01), Chevallier
Aberle Timothy
Blish Nelson A.
Cooper Industries Inc.
Duke Jackie Lee
Reese Randolph A.
LandOfFree
Length compensating joint does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Length compensating joint, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Length compensating joint will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2004552