Stopper for opening in gas conduit wall

Details Stopper for opening in gas conduit wall Stopper for opening in gas conduit wall

1996-01-22

1997-01-07

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

137318, 138 94, 138 97, F16K 4300, F16L 5512

Patent

active

055906761

ABSTRACT:
The tool of the invention is used to insert and secure a stopper plug to close a hole in the wall of a pipe carrying fluid under pressure. This permits removal of a defective pipe fitting such as a tee or a valve. The stopper plug includes a toggle or anchor for engaging the inner wall of the pipe at the location of the hole to be sealed shut. After the stopper plug is secured in place, the defective fitting is removed.

REFERENCES:
patent: 1850040 (1932-03-01), Turner
patent: 2763282 (1956-09-01), Reedy et al.
patent: 2911859 (1959-11-01), Longley et al.
patent: 3275023 (1966-09-01), Raspante
patent: 3473555 (1969-10-01), Martin et al.
patent: 4019541 (1977-04-01), Koppl
patent: 4127141 (1978-11-01), Ledonne et al.
patent: 4184504 (1980-01-01), Carmichael et al.
patent: 4503879 (1985-03-01), Lazarus

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