Fluid-operated tool

Details Fluid-operated tool Fluid-operated tool

1998-04-28

1999-07-20

Eley, Timothy V.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5744, B25B 1346

Patent

active

059243406

ABSTRACT:
A fluid-operated tool for tightening and loosening of threaded connectors has a turnable engaging unit for engaging a threaded connector so as to turn the threaded connector and to tighten and loosen the threaded connector; and driving unit connected with the engaging unit and acting on the engaging unit so as to turn the engaging unit, the driving unit including two fluid-operated driving elements connected to the engaging unit and operated so that during an initial stage of tightening or a final stage of loosening of a threaded connector one of the fluid-operated driving elements is actuated and drives the engaging unit, while during a final stage of tightening or an initial stage of loosening of a threaded connector the other of the fluid-operated driving elements is operated.

REFERENCES:
patent: 5203238 (1993-04-01), Ferguson
patent: 5515753 (1996-05-01), Wagner et al.

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