Pipes and tubular conduits – With closures and plugs – Test plugs
Patent
1987-05-08
1988-09-06
Thronson, Mark J.
Pipes and tubular conduits
With closures and plugs
Test plugs
F16L 5510
Patent
active
047685603
ABSTRACT:
An expandable pipe plug can be constructed so as to use a peripherial elastomeric sleeve having an exterior surface which is adapted to seal against the interior of a pipe and a tapered internal surface which fits against a correspondingly shaped, tapered surface of a rigid expander. The tapered surfaces of the sleeve and the expander are provided with coaction threads so that as the expander is turned the sleeve will be expanded outwardly. The expander includes a stud for use with a tool such as a wrench in turning it relative to the sleeve, this stud including an internal threaded passage which is initially closed off by a knock-off disk. The passage can be used in connecting a pipe, a gauge, a valve of the like to the end of a pipe sealed off with the pipe plug.
REFERENCES:
patent: 1047517 (1912-12-01), Harris
patent: 2604225 (1952-07-01), Armstrong
patent: 3412759 (1968-11-01), Potter et al.
patent: 4393900 (1983-07-01), Gajajiva et al.
patent: 4452070 (1984-06-01), Kipp
patent: 4460019 (1984-07-01), Cordor
patent: 4506705 (1985-03-01), Thompson
patent: 4620330 (1986-11-01), Izzi, Sr.
patent: 4678097 (1987-07-01), Crute
O'Brian Edward D.
Thronson Mark J.
LandOfFree
Pipe plugs does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe plugs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe plugs will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1601305