US Patent: 6,199,642 - Reversible Ratchet Power Tool with Synchronized Motor and Ratchet Control


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US Patent: 6,199,642

Reversible Ratchet Power Tool with Synchronized Motor and Ratchet Control

Patentees:

Thomas P. Becker (exact or similar names) - Kenosha, WI

Joshua M. Beer (exact or similar names) - Racine, WI

Dennis A. Nowak (exact or similar names) - Greendale, WI

USPTO Classifications:

173/216, 173/217, 173/29, 200/1V, 310/50

Tool Categories:

Assignees:

Snap-On Tools Co. - Kenosha, WI

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Jul. 06, 1999
Granted:	Mar. 13, 2001

Patent Pictures:

USPTO (New site tip)
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Snap-On Tools Company History

Description:

Seyfarth & Shaw - patent attorneys

Abstract

A reversible ratcheting electric power tool has a reversible DC electric motor having an output coupled to drive a drive shaft through a reversible ratchet assembly. The tool housing has a reversing mechanism which includes a manually operable reversing cap rotatable about the axis of the drive shaft for controlling the ratcheting direction of the ratchet assembly, the cap having a pair of projections which respectively engage the actuator buttons of two direction control microswitches coupled through an on-off switch to a battery. When the ratchet assembly is in a neutral or non-ratcheting condition, both microswitches are in a normal deactuated condition connecting both of the motor terminals to the battery negative terminal. When the selector cap shifts the ratchet assembly to a forward ratcheting condition, one microswitch is actuated to connect one of the motor terminals to the battery positive terminal, and when the selector is moved to a reverse ratcheting direction, it actuates the other microswitch to connect the other motor terminal to the battery positive terminal.