Stator assembly for a brushless motor in a power tool

US9819241B2 · kind B2 · utility

Assignee

• BLACK & DECKER INC. · US

Inventors

• David J. Smith · Columbia, US
• Justin H. Ayers · Jarrettsville, US
• David E. Gillespie · Baltimore, US
• Eric E. Hatfield · Jacobus, US
• Earl M. Ortt · Bel Air, US
• Stephen P. Osborne · Pikesville, US
• Brian E. Friedman · Baltimore, US
• Jarrett A. Dunston · Bel Air, US

Key dates

• Filing date: Jun 17, 2013
• Grant date: Nov 14, 2017
• Expiry date: Aug 11, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2203/06
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A power tool includes a motor having a stator assembly and a rotor pivotably arranged inside the stator. The stator assembly includes a lamination stack defining a plurality of poles; a plurality of field windings each arranged at at least two opposite poles of said plurality of poles and connected together around the stator assembly; and a plurality of conductive terminals longitudinally arranged along an outer surface of the lamination stack and electrically coupled to the plurality of field windings and a power source.