US 4,729,269 AGranted

Powered pipe wrench

OwnerRichard H. Killianinventor

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Abstract

A pipe wrenching tool adapted to be powered by a hand held power drive mechanism is formed with a support for a drive wheel and an idler wheel with the idler wheel being movable with respect to the drive wheel to adjust the tool for differing sizes of pipe. The tool is adapted to interface transversely to the axis of the pipe to be wrenched with the drive wheel engaging the pipe without requiring a part of the tool to circumscribe the pipe. The rotational axis of the idler wheel and rotational axis of the drive wheel are off-set with respect to each other to cause the pipe being wrenched to be forced into the tool. The tool is adapted at both sides to have the drive source attached at the side of the tool away from the pipe so that the tool may be used to engage and wrench pipe in confined spaces. Only the wheels of the tool are rotated; the tool need not rotate with respect to the pipe.

Claims12

Dependent claims

A pipe wrenching tool adapted to be powered by a hand held power drive mechanism for rotating threaded pipe in clockwise or counterclockwise direction, said tool having an outside pipe engaging edge and a power drive mechanism attachment edge, said tool comprising,

(a) a two sided, unitary body frame, said frame having an open face at said outside pipe engaging edge thereof and an inside face at said drive mechanism edge thereof,
(b) a drive wheel,
(c) an idler wheel,
(d) means in said frame for rotatably supporting said drive wheel inbetween said two sides thereof in a manner to expose said drive wheel at said open face of said frame,
(e) means in said frame for rotatably supporting said idler wheel inbetween said two sides thereof in a manner to expose said idler wheel at said open face of said frame, said means including means for movably positioning said idler wheel with respect to said drive wheel,
(f) means at both sides of said frame for rotating said drive wheel in said rotatable support,
(g) supporting means for supporting a power drive mechanism on said frame with said drive mechanism in mechanical engagement with one of said means for rotating said drive wheel, said drive mechanism extending from one of said sides and away from said inside face of said frame,
(h) and each side of said frame including means for mounting said supporting means thereto such that said supporting means selectively extends from one or the other of said sides.

5 more elements

A pipe wrenching tool adapted to be powered by a hand held power drive mechanism for rotating threaded pipe about the axis of said pipe in clockwise or counterclockwise direction comprising,

(a) a two sided frame, said frame having duplicate side surfaces at each side thereof, said frame being an opened-faced L-shaped construction in cross-section parallel to said sides and having a leg portion and an upright portion at said opened face,
(i) said leg portion and said upright portion defining an opened faced outer surface of said frame,
(ii) the side of said upright portion opposite to said leg portion defining an inner surface of said frame,
(iii) and said frame being adapted to engage said pipe to be rotated transversly to the axis of said pipe in said opened face outer surface of said frame,
(b) a drive wheel,
(c) an idler wheel,
(d) said drive wheel being rotatably supported in said leg portion of said frame at said opened face,
(e) said idler wheel being rotatably supported in said upright portion of said frame at said opened face and being movably positionable along said outer surface of said frame at said upright portion to position said idler wheel with respect to said drive wheel,
(f) means in said inner surface at said upright portion of said frame for positioning said idler wheel along said outer surface of said frame with respect to said drive wheel,
(g) means at both sides of said frame for rotating said drive wheel in said rotatable support,
(h) supporting means for selectively supporting a power drive mechanism at either of both sides of said frame with said drive mechanism in mechanical engagement with one of said means for rotating said drive wheel,
(i) and each side of said frame including means for mounting said supporting means thereto such that said supporting means selectively extends from one or the other of said sides.

9 more elements

Dependencies are inferred from the claim text.