Plumbing tool for temporarily plugging a pipe with field-replace

Details Plumbing tool for temporarily plugging a pipe with field-replace Plumbing tool for temporarily plugging a pipe with field-replace

1993-09-27

1994-11-15

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 90, F16L 5510

Patent

active

053638816

ABSTRACT:
A plumbing tool for temporarily plugging a pipe which normally contains fluid under pressure. An elongate threaded rod has proximal and distal ends. A hollow elongate sleeve is disposed around the threaded rod. A cylindrical gasket is disposed around the rod between the hollow sleeve and a gasket stop on the distal end of the rod. The stop includes a washer, keyed to the threaded rod to prevent relative rotational motion, and a nut engaged on the distal end of the threaded rod, to permit field removal of the washer and field replacement of the gasket.

REFERENCES:
patent: 491184 (1893-02-01), McCartney
patent: 1055124 (1913-03-01), Bills
patent: 1850040 (1932-03-01), Turner
patent: 1997878 (1935-04-01), Wagner
patent: 2245887 (1941-06-01), Wikander
patent: 2514911 (1950-07-01), Tatum
patent: 2725112 (1955-11-01), Weismon et al.
patent: 2764184 (1956-09-01), Fitzhugh et al.
patent: 2977992 (1961-04-01), Jensen
patent: 3993103 (1976-11-01), Hammer
patent: 4310029 (1982-01-01), Dudek
"Removable Plugs Seal Pipe Ends", Product Engineering, Jan. 6, 1964.

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