Fluid handling – Processes – Cleaning – repairing – or assembling
Reexamination Certificate
2007-09-18
2007-09-18
Lee, Kevin (Department: 3753)
Fluid handling
Processes
Cleaning, repairing, or assembling
C137S317000, C138S094000, C138S097000
Reexamination Certificate
active
11113550
ABSTRACT:
A system and method of plugging a pipe including sealably securing onto the exterior of a pipe first and second spaced apart collars, each collar having a sealing face in a plane perpendicular the pipe axis, cutting and removing a length of pipe from between the collars leaving two open pipe ends, positioning first and second seal cups between the collars, each seal cup having a forwardly extending circumferential lip of internal diameter greater than the external diameter of the pipe, each seal cup having top and bottom cam followers, moving cam surfaces against the cam followers to guide the seal cups into sealing engagement with the sealing faces of the collars, and forcing a wedge between rearward surfaces of the seal cups.
REFERENCES:
patent: 3170226 (1965-02-01), Larry
patent: 3599663 (1971-08-01), VerNooy
patent: 3614252 (1971-10-01), Rose et al.
patent: 3626475 (1971-12-01), Hicks
patent: 3665966 (1972-05-01), VerNooy
patent: 3785041 (1974-01-01), Smith
patent: 3872880 (1975-03-01), VerNooy et al.
patent: 4411459 (1983-10-01), VerNooy
patent: 4579484 (1986-04-01), Sullivan
patent: 4880028 (1989-11-01), Osburn et al.
patent: 5439331 (1995-08-01), Andrew et al.
patent: 5443095 (1995-08-01), Glossop, Jr.
patent: 5531250 (1996-07-01), Freeman et al.
patent: 5612499 (1997-03-01), Andrew et al.
patent: 5690139 (1997-11-01), Murphy et al.
patent: 6012878 (2000-01-01), Hicks
patent: 6588455 (2003-07-01), Welfare
patent: 6745791 (2004-06-01), Beals et al.
patent: 1064398 (1967-04-01), None
patent: WO 2004/099661 (2004-11-01), None
Calkins Charles D.
Ugland Harvey A.
Wilson Buddy A.
Gotwals Gable
Lee Kevin
TDW Delaware Inc.
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