Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 5,713,251
Composite Box Wrench with Ratchet Module Insert
Gregory A. Zurbuchen - Kenosha, WI
Dean J. Iwinski - Muskego, WI
George Ulics - Gladwin, MI

USPTO Classifications:
81/61, 81/900

Tool Categories:
wrenches : ratchet wrenches
wrenches : nut wrenches

Snap-On Technologies, Inc. - Lincolnshire, IL

Not known to have been produced

none listed

Patent Dates:
Applied: Jan. 17, 1997
Granted: Feb. 03, 1998

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Snap-On Tools Company History
Emrich & Dithmar - patent attorneys


A double-ended ratcheting box end wrench includes a body formed entirely of glass-fiber-reinforced plastic material with box-type ratcheting inserts molded at opposite ends of the body. The body includes layers of random discontinuous glass-fiber-reinforced plastic material and a band of unidirectional continuous glass-fiber-reinforced plastic material. The body is subjected to a compression molding process embedded within which are the ratcheting inserts to form a composite wrench structure. Each insert includes a two-part housing in which are disposed a ratchet gear, a pawl and a bias spring.

Copyright © 2002-2019 - DATAMP