Offset rotary tool

Details Offset rotary tool Offset rotary tool

1996-05-20

1998-01-13

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

U-crank arm

811771, B25B 1300

Patent

active

057067090

ABSTRACT:
The present invention provides a hand-powered tool facilitating the translation of rotary motion of a workman's arm through an angled shaft which may rotate freely with respect to a handle. The angled shaft has three coplanar bends resulting in a stretched "Z" configuration in order to allow the user to apply a great torque about a circle which his hand easily can describe and which is translated through the shaft to the subject fastener or surface point. The shaft is rotatably mounted to a handle through a bearing thereby enabling full rotation of the shaft with respect to the handle and permitting the user to complete a rotary cycle without release the tool. A hollow tip is disposed at one end of the tool within which interchangeable bits may be installed. An auxiliary handle releasably attached to the shaft also is provided for use in situations where a greater torque is required.

REFERENCES:
patent: 460256 (1891-09-01), Steward
patent: 2577931 (1951-12-01), Tillman
patent: 3388622 (1968-06-01), Klang
patent: 4829271 (1989-05-01), Kenigson
patent: 4924733 (1990-05-01), McKenzie
patent: 4969231 (1990-11-01), Mader et al.

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