Dirt and moisture sealing pipe plug for sealing different size p

Details Dirt and moisture sealing pipe plug for sealing different size p Dirt and moisture sealing pipe plug for sealing different size p

1990-10-03

1991-09-03

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

220235, 220236, 220237, F16L 1112

Patent

active

050444034

ABSTRACT:
A pipe plug of the type including a tie plate having a threaded bolt extending upward from a stepped circular base for mounted an elastic seal ring, a wedge ring and a cone permitting the cone to rotate on the threaded bolt to force the wedge ring to squeeze the seal ring to extend outward for sealing a tubing. The upper step of the stepped circular base of the tie plate is inserted in the seal ring when the seal ring is mounted on the lower step of the stepped circular base so that the seal ring can only be stretched outward.

REFERENCES:
patent: 2375995 (1945-05-01), Kaeser
patent: 3494504 (1970-02-01), Jackson
patent: 3747541 (1973-07-01), Reese
patent: 4493344 (1985-01-01), Mathison et al.
patent: 4585033 (1986-04-01), Westman
patent: 4762151 (1988-08-01), Kinnan

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