Pipes and tubular conduits – With closures and plugs
Reexamination Certificate
2007-07-10
2007-07-10
Brinson, Patrick F. (Department: 3754)
Pipes and tubular conduits
With closures and plugs
C138S090000, C138S097000, C138S093000, C073S049800
Reexamination Certificate
active
11254568
ABSTRACT:
An apparatus and method for isolating the end of a segment of pipe, which includes a substantially cylindrical body, having first and second ends, and a circumference slightly less than the inner diameter of the pipe segment; a pair of spaced apart inflatable seals positioned around the wall of the body; means for introducing a fluid into the inflatable seals through separate lines under sufficient pressure so that the inflatable seals are inflated against the wall of the pipe segment defining an annular space between the inflated inflatable seals; a line for introducing a fluid into the annular space under pressure to test the integrity of the seal between the inflatable seals and the pipe wall, and having a dual function to capture fluid which may have entered the annular space as a result of a inflatable seal failure; a line through the body for allowing fluid to flow through the line at predetermined times and pressures; and a plurality of bolts on the first end of the body which would engage the inner wall of the pipe in order to provide a secure engagement between the body and the pipe in the event of high unexpected pressure within the pipeline.
REFERENCES:
patent: 2241526 (1941-05-01), Rosenkranz
patent: 3103235 (1963-09-01), Stringham, III
patent: 3269421 (1966-08-01), Telford et al.
patent: 3618639 (1971-11-01), Daley et al.
patent: 3834422 (1974-09-01), Larson
patent: 3902528 (1975-09-01), Tartabini et al.
patent: 3946761 (1976-03-01), Thompson et al.
patent: 4250926 (1981-02-01), Satterthwaite et al.
patent: 4413655 (1983-11-01), Brown
patent: 4591477 (1986-05-01), Rettew
patent: 5119861 (1992-06-01), Pino
patent: 5844127 (1998-12-01), Berube et al.
patent: 6601437 (2003-08-01), Gotowik
Beebe Wayne W.
Stecker Charles L.
Brinson Patrick F.
Mechanical Research & Design, Inc.
Whyte Hirschboeck Dudek SC
LandOfFree
Apparatus and method for isolating and testing a segment of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for isolating and testing a segment of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for isolating and testing a segment of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3815673