Anti-crush tool

Details Anti-crush tool Anti-crush tool

1992-02-21

1993-03-23

Parker, Roscoe V.

Tools

Wrench, screwdriver, or driver therefor

Attachment, or including adjunct or replaceable portion

8488, 8DIG1, 29240, 294265, B25B 2300

Patent

active

051954052

ABSTRACT:
A tool useful to plumbers and other persons who work with pipe and tubing, to facilitate gripping and applying torque to a free end of a piece of pipe or tubing includes a plug portion of cylindrical shape that is driven into the free end of the pipe for the purpose of reinforcing the wall of the pipe so that it can withstand the radial forces exerted by a wrench or over-center pliers during the application of torque to the pipe. A shoulder portion limits the depth to which the plug portion can be inserted into the pipe, and a handle portion is connected to the shoulder portion for convenience in handling the tool.

REFERENCES:
patent: 1487592 (1924-03-01), Novotny
patent: 1715792 (1929-06-01), Shrum
patent: 2860535 (1958-11-01), Fowler
patent: 2909210 (1959-10-01), Bennett
patent: 3370615 (1968-02-01), Tamaki et al.
patent: 3947945 (1976-04-01), Gulistan
patent: 3991458 (1976-11-01), Donoff
patent: 4899409 (1990-02-01), Cox, Jr.
patent: 5035265 (1991-07-01), Chen
patent: 5095607 (1992-03-01), Simon et al.

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