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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.:

US 11241781 B1

PDFFull Text
Date of Patent:
Feb. 08, 2022

Filed:

Sep. 24, 2019

Brushless motor system for power tools

Applicant:

Black & Decker Inc., New Britain, CT (US);

Inventors:

Joseph P. Kelleher, Parkville, MD (US);

William F. Gallagher, Stewartstown, PA (US);

Craig A. Oktavec, Forest Hill, MD (US);

David J. Smith, Columbia, MD (US);

Jarrett A. Dunston, Bel Air, MD (US);

Assignee:

Black & Decker Inc., New Britain, CT (US);

Attorney:

Amir R. Rohani

Primary Examiner:

Eyamindae C Jallow

Int. Cl.
CPC ...
B25F 5/00 (2006.01); B25F 5/02 (2006.01); H02K 3/487 (2006.01); H02K 3/52 (2006.01); H02K 11/33 (2016.01); B24B 23/02 (2006.01); H02K 7/116 (2006.01); H02K 7/14 (2006.01); H02K 9/06 (2006.01); H02K 9/22 (2006.01); H02K 11/215 (2016.01); H02K 7/08 (2006.01); H02K 9/04 (2006.01); H02K 1/14 (2006.01); H02K 1/27 (2006.01); H02K 3/18 (2006.01); H02K 5/20 (2006.01); H02K 21/16 (2006.01); H02K 3/34 (2006.01); H02K 5/10 (2006.01); H02K 3/38 (2006.01);
U.S. Cl.
CPC ...
B25F 5/008 (2013.01); B24B 23/028 (2013.01); B25F 5/02 (2013.01); H02K 1/146 (2013.01); H02K 1/2706 (2013.01); H02K 3/18 (2013.01); H02K 3/34 (2013.01); H02K 3/487 (2013.01); H02K 3/522 (2013.01); H02K 5/10 (2013.01); H02K 5/20 (2013.01); H02K 7/08 (2013.01); H02K 7/116 (2013.01); H02K 7/145 (2013.01); H02K 9/04 (2013.01); H02K 9/06 (2013.01); H02K 9/22 (2013.01); H02K 11/215 (2016.01); H02K 11/33 (2016.01); H02K 21/16 (2013.01); H02K 3/38 (2013.01); H02K 2203/09 (2013.01); H02K 2203/12 (2013.01); H02K 2213/03 (2013.01);
Abstract

A power tool is provided including a tool housing including a motor housing and a handle portion; a battery receptacle disposed at an end of the handle portion opposite the motor housing, the battery receptacle being configured to receive a battery pack having a maximum voltage of at least 60 V; and a brushless DC (BLDC) motor including an electronically-commutated stator assembly and a rotor assembly magnetically interacting with the rotor assembly to rotate with respect to the stator assembly, the stator assembly comprising a stator lamination stack sized to be received within the motor housing having a circumference of approximately 140 to approximately 190 mm. The motor produces a maximum power output of at least 1600 watts for driving an output shaft at a maximum torque of at least 30 inch-pounds and a maximum speed of at least 8000 rotations-per-minute.

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