High pressure pipe stopper

Details High pressure pipe stopper High pressure pipe stopper

1984-12-03

1986-09-16

Levy, Stewart J.

Measuring and testing

With fluid pressure

Clamp, plug, or sealing feature

73 491, 138 90, 411 55, 411 65, F16L 5510, G01M 302

Patent

active

046114858

ABSTRACT:
A high pressure pipe stopper includes an elongated stem having a threaded section and terminating at a first end in a conically shaped mandrel having an exterior surface sloped at an angle of about 5.degree.. The pipe stopper also includes a plurality of grip segments about the stem and a nut engaged with the threaded section to force the grip segments up along the mandrel. The pipe stopper may also include an extractor coupling connected between the nut and grip segments such that the grip segments are drawn down the mandrel when the nut is turned away from the mandrel.

REFERENCES:
patent: 3323551 (1967-06-01), Bell et al.
patent: 3983904 (1976-10-01), Laviano
patent: 4282982 (1981-08-01), Nuesslein
patent: 4381800 (1983-05-01), Leslie
patent: 4385643 (1983-05-01), Noe

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