Plug assembly for sealing a pipe

Details Plug assembly for sealing a pipe Plug assembly for sealing a pipe

1975-03-13

1976-10-05

Aegerter, Richard E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 90, F16L 5510

Patent

active

039839044

ABSTRACT:
A plug assembly for fluid sealing a pipe includes a cylindrical plug made of pliable material which has a conical bore defining a cylindrical wall of tapering thickness. A threaded bore or stud extends axially of the bore and has a nut rotatable mounted thereon. A spherical or conical drive member carried by the bolt contacts and expands the tapered wall of the plug when the nut is tightered on the bolt. The nut may bear against the drive member or one end of the plug. The bolt may be prevented from rotating when the nut is tightened, by shaping one end of the bolt to engage a wrench, or by locking the other end of the bolt in the plug and providing gripping means on the plug arranged to engage the inside of the pipe.

REFERENCES:
patent: 1050557 (1913-01-01), McLaughlin
patent: 1644118 (1927-10-01), Florence
patent: 1850040 (1932-03-01), Turner
patent: 1993307 (1935-03-01), Nicholson
patent: 2428381 (1947-10-01), Parry
patent: 2445273 (1948-07-01), Kennedy
patent: 2855003 (1958-10-01), Thaxton
patent: 2937666 (1960-05-01), Maisch
patent: 3020929 (1962-02-01), Knecht
patent: 3550636 (1970-12-01), Hearne

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