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:
Jun. 08, 2010
Filed:
Nov. 13, 2006
Steven J. Phillips, Ellicott City, MD (US);
Daniel J. White, Baltimore, MD (US);
Adam M. Casalena, Perry Hall, MD (US);
Danh T. Trinh, Parkville, MD (US);
Daniele C. Brotto, Baltimore, MD (US);
Gregory A. Rice, Aberdeen, MD (US);
Steven J. Phillips, Ellicott City, MD (US);
Daniel J. White, Baltimore, MD (US);
Adam M. Casalena, Perry Hall, MD (US);
Danh T. Trinh, Parkville, MD (US);
Daniele C. Brotto, Baltimore, MD (US);
Gregory A. Rice, Aberdeen, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
In a cordless power tool system, high temperature gases created in a battery pack by the battery cells during a charging or discharging operation can be routed into a housing of one of an attached power tool or charger to reduce the temperature of the gases, prior to venting the gases externally. In an example, a battery pack has at least one vent hole for relieving pressure and a movable device covering the vent hole and configured to expose the vent hole upon a pressure set-point within the pack housing being exceeded. In another example, the pack housing includes a thin-walled section designed to break if pressure within the pack housing exceeds a given pressure setpoint. In a further example, the pack housing includes a baffle having an S-shaped cross-section for providing a vent path for gases and for preventing external fluids from entering the pack housing.