Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 5,239,899
Wrench with Inclined Drive Faces
Patentee:
David R. Baker - Fort Worth, TX

USPTO Classifications:
81/186

Tool Categories:
wrenches : nut wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
none listed

Patent Dates:
Applied: Nov. 12, 1991
Granted: Aug. 31, 1993

Patent Pictures:
ADJUSTABLE RAPID WRENCH / US PAT 5239899 AND PAT PEND - Doug Busch collection
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
James E. Bradley - patent attorney

Abstract

A wrench for driving a nut utilizes curved drive faces. The drive faces are convex and protrude inward toward a center line between the jaw portions. Notches are formed on each drive face near the free end. One wrench is adjustable, having a positioner that pushes the nut outward as the movable jaw closes. The positioner maintains the nut in a position in contact with the curved drive surfaces.

Known example marked "ADJUSTABLE RAPID WRENCH / US PAT 5,239,899 AND PAT PEND ."

CROSS REFERENCE TO RELATED APPLICATION

This invention is a continuation-in-part of Ser. No. 657,139, now abandoned, filed Feb. 15, 1991, David R. Baker, entitled "Open End Wrench".

See also, patent 5381710.

Copyright © 2002-2017 - DATAMP