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:
Sep. 25, 2007
Filed:
May. 30, 2003
Dale K. Wheeler, Fallston, MD (US);
Robert G. Moores, Jr., Reisterstown, MD (US);
Richard T. Walter, Baldwin, MD (US);
Dale K. Wheeler, Fallston, MD (US);
Robert G. Moores, Jr., Reisterstown, MD (US);
Richard T. Walter, Baldwin, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A battery pack(FIG.) comprises an elongated cylindrical, metal casinga plurality of cellsin casingand three coaxial pack terminalsFor enhanced convenience, pack terminalsare electrically connectable in a cordless deviceregardless of the angular orientation of the packabout casing axisTo reduce cost and increase durability, packhas no welded connections and will permit high current discharge rates. Cellsare electrically connected but are mechanically disconnected. A springengages celland biases cellstightly together in compression to form good, low resistance electrical contact between cellscasing base capand topTo provide a pack with two output voltages, the third pack terminalhas a polarity (relative to first pack terminal) the same as second pack terminaland is electrically connected to the cell can terminalof forward cellthereby electrically by-passing cell