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:
Dec. 16, 2008
Filed:
Aug. 10, 2005
Hung T. Du, Reisterstown, MD (US);
Richard T. Walter, Baldwin, MD (US);
Michael R. Sell, Bel Air, MD (US);
Joshua F. West, Towson, MD (US);
Hung T. Du, Reisterstown, MD (US);
Richard T. Walter, Baldwin, MD (US);
Michael R. Sell, Bel Air, MD (US);
Joshua F. West, Towson, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A method for forming an armature for an electric motor includes securing a lamination stack having slots therein on an armature shaft. A commutator is secured on one end of the armature shaft. Magnet wires are wound in the slots in the lamination stack and ends of the magnet wires are secured to the commutator. Plastic is molded around the lamination stack, commutator and magnet wires. Excess plastic is machined off. The magnet wires can have a layer of heat activated adhesive that is activated when the plastic is molded. Slots in the lamination stack can include slot liners formed of thermally conductive plastic. A fan can be formed when the thermally conductive plastic is molded to encapsulate the magnet wires.