Patent · US Active

Power tools, battery chargers and batteries

US7492125B2 · kind B2 · utility

27Cited by

41References

7Claims

0Family size

Assignee

Milwaukee Electric Tool Corporation · US

Inventors

David P. Serdynski · Waukesha, US
Boyd J. Miller · Mequon, US
Scott D. Bublitz · Hartland, US
Troy C. Thorson · Cedarburg, US
Thomas R. Bednar · Pewaukee, US
David B. Griep · Rubicon, US
Nancy Uehlein-Proctor · Nashotah, US
Dennis J. Grzybowski · New Berlin, US
Jeffrey S. Holly · West Bend, US
Jeffrey C. Hessenberger · Neosho, US
Mark A. Kubale · West Bend, US
Todd W. Johnson · Wauwatosa, US
Jonathan P. Lobert · Hartford, US
Jay J. Rosenbecker · Menomonee Falls, US

Key dates

Filing date	Nov 4, 2005
Grant date	Feb 17, 2009
Priority date	—
Expiry date	Aug 10, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A battery pack for powering a cordless power tool. The battery pack includes at least one battery cell operable to supply a discharge current, a switch operable to control the discharge current and a protection device to protect the switch. The protection device is positioned such that the device absorbs a current traveling in a direction opposite to that of the discharge current supplied from the battery cell.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.