The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 2010
Filed:
Apr. 28, 2008
David A. Carrier, Aberdeen, MD (US);
Bhanuprasad V. Gorti, Abingdon, MD (US);
Danh Thanh Trinh, Parkville, MD (US);
R. Roby Bailey, New Park, PA (US);
Andrew E. Seman, Jr., White Marsh, MD (US);
Daniele C. Brotto, Baltimore, MD (US);
Fred S. Watts, New Freedom, PA (US);
David A. Carrier, Aberdeen, MD (US);
Bhanuprasad V. Gorti, Abingdon, MD (US);
Danh Thanh Trinh, Parkville, MD (US);
R. Roby Bailey, New Park, PA (US);
Andrew E. Seman, Jr., White Marsh, MD (US);
Daniele C. Brotto, Baltimore, MD (US);
Fred S. Watts, New Freedom, PA (US);
Black & Decker Inc., Newark, DE (US);
Abstract
In a cordless power tool system, a battery pack which may removably attachable to a cordless power tool and to a charger may include at least one battery cell and a power limiting device. The power limiting device may be arranged in series with the at least one battery cell for limiting power output of the battery pack based on the component that is connected to the pack. Current and hence power out of the battery pack may be controlled as a function of total internal impedance in the battery pack, which may be adjusted depending on the component that is connected to the pack.