Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1992-06-03
1993-11-02
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81446, B25B 1318
Patent
active
052575594
ABSTRACT:
An internal pipe gripping device is provided which consists of a mechanism at one end for grasping an inner surface of a pipe and a structure at an opposite end for coupling to a pipe turning machine, so that the pipe can be rotated to be cut, polished, threaded and the like.
REFERENCES:
patent: 1968872 (1934-08-01), Campbell
patent: 2811067 (1957-10-01), Greer
patent: 3902384 (1975-09-01), Ehrler
Kroll Michael I.
Meislin D. S.
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