Pipe plug puller

Details Pipe plug puller Pipe plug puller

2005-06-21

2005-06-21

Watson, Robert C. (Department: 3723)

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

C029S237000

Reexamination Certificate

active

06907650

ABSTRACT:
Pipe plugs are difficult to remove due in part to the design of the pipe plug to be extremely tight fit with a pipe. Pipe plugs are described as being removed by a pipe plug removal tool. The pipe plug removal tool permits easy access to a trench and employs leverage to remove the pipe plug.

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patent: 3966169 (1976-06-01), Schosek
patent: 4249293 (1981-02-01), Schulberg
patent: 4633957 (1987-01-01), Prost
patent: 4780942 (1988-11-01), Bernat
patent: 4796347 (1989-01-01), Aguillen, Jr. et al.
patent: 5003682 (1991-04-01), Strausbaugh et al.
patent: 5014409 (1991-05-01), Hippach
patent: 5079791 (1992-01-01), Grech
patent: 5465430 (1995-11-01), Davis et al.
patent: 5778740 (1998-07-01), Tye
patent: 6086048 (2000-07-01), Owen

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