Tool for installing a stopper in a gas conduit wall

Details Tool for installing a stopper in a gas conduit wall Tool for installing a stopper in a gas conduit wall

1994-06-29

1996-04-30

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

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

Patent

active

055115780

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: 2170866 (1939-08-01), McAllister
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: 4239055 (1980-12-01), Van Coffman
patent: 4503879 (1985-03-01), Lazarus
patent: 5058519 (1991-10-01), Collins
patent: 5099868 (1992-03-01), Weber
patent: 5152311 (1992-10-01), McCreary

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