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:
Mar. 24, 2009
Filed:
Oct. 07, 2004
Dave Carrier, Aberdeen, MD (US);
Steve Phillips, Ellicott City, MD (US);
Jeffrey J. Francis, Nottingham, MD (US);
R. Roby Bailey, New Park, PA (US);
Danh Thanh Trinh, Parkville, MD (US);
Andrew E. Seman, Jr., White Marsh, MD (US);
Christopher R. Yahnker, Raleigh, NC (US);
Daniele C. Brotto, Baltimore, MD (US);
John C. Vanko, Timonium, MD (US);
Robert Bradus, Bel Air, MD (US);
Dave Carrier, Aberdeen, MD (US);
Steve Phillips, Ellicott City, MD (US);
Jeffrey J. Francis, Nottingham, MD (US);
R. Roby Bailey, New Park, PA (US);
Danh Thanh Trinh, Parkville, MD (US);
Andrew E. Seman, Jr., White Marsh, MD (US);
Christopher R. Yahnker, Raleigh, NC (US);
Daniele C. Brotto, Baltimore, MD (US);
John C. Vanko, Timonium, MD (US);
Robert Bradus, Bel Air, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
In a cordless power tool system, protection methods, circuits and devices are provided to protect against fault conditions within a battery pack that is operatively attached to a power tool or charger, so as to prevent internal or external damage to the battery pack or attached tool or charger. The exemplary methods, circuits and devices address fault conditions such as over-charge, over-discharge, over-current, over-temperature, etc.