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US Patent: 6,851,341
Locking Drive Tool
Dean J. Iwinski - Muskego, WI
Daniel M. Eggert - Kenosha, WI
Gordon A. Putney - Lake Geneva, WI
Kelly Converse - Racine, WI
Michael H. Opgenorth - Colgate, WI

USPTO Classifications:
403/322.3, 403/326, 81/177.85

Tool Categories:
wrenches : socket wrenches

Snap-On, Inc. - Pleasant Prairie, WI

Not known to have been produced

none listed

Patent Dates:
Applied: Aug. 30, 2002
Granted: Feb. 08, 2005

Patent Pictures:
USPTO pdf tiff
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Snap-On Tools Company History
Seyfarth, Shaw LLP - patent attorneys


A drive tool is shiftable between locking and releasing configurations relative to an associated tool, the drive tool including a lock member moveable between a locking position and a release position relative to the associated tool, an actuator member moveable between a locking condition and a releasing condition, and coupling structure interconnecting the actuator member and the lock member. The lock member is tiltable to a latching condition which prevents its movement to its release position. In one embodiment the coupling structure is substantially rigid so that the lock member and the actuator move in substantially the same direction, and in another embodiment the coupling structure is flexible and resilient. The coupling structure may be fixedly coupled to the actuator member or may be loosely coupled thereto and biased to a rest condition.

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