US 5,706,709 A · Offset rotary tool

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.

Claims14

Dependent claims

An offset rotary tool comprising:

(a) a handle;
(b) a bearing fixedly mounted within said handle;
(c) an angled shaft having a first proximal end rotatably mounted to said handle through said bearing and a second distal end having a working tip, said angled shaft having three coplanar bends and comprising a first segment, a first bend of about 100.degree. proximal to said first segment of said angled shaft and defining a second segment, a second bend of about 105.degree. in the direction opposite from said first bend and defining a third segment and a third bend of about 165.degree. proximal to said second end of said shaft in a direction opposite to that of said second bend and defining a fourth segment and
(d) an aperture disposed at the approximate center of said second segment;
whereby if a reference line were drawn connecting said aperture with said working tip, said second distal end would lie along this line.

2 more elements

Dependencies are inferred from the claim text.

Offset rotary tool

Life of this patent

Offset rotary tool

Life of this patent

Abstract

Claims14