Invention Grant
- Patent Title: Brushless motor system for power tools
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Application No.: US16580424Application Date: 2019-09-24
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Publication No.: US11241781B2Publication Date: 2022-02-08
- Inventor: Joseph P. Kelleher , William F. Gallagher , Craig A. Oktavec , David J. Smith , Jarrett A. Dunston
- Applicant: Black & Decker Inc.
- Applicant Address: US CT New Britain
- Assignee: Black & Decker Inc.
- Current Assignee: Black & Decker Inc.
- Current Assignee Address: US CT New Britain
- Agent Amir R. Rohani
- Main IPC: B25F5/00
- IPC: B25F5/00 ; B25F5/02 ; H02K3/487 ; H02K3/52 ; H02K11/33 ; B24B23/02 ; H02K7/116 ; H02K7/14 ; H02K9/06 ; H02K9/22 ; H02K11/215 ; H02K7/08 ; H02K9/04 ; H02K1/14 ; H02K1/27 ; H02K3/18 ; H02K5/20 ; H02K21/16 ; H02K3/34 ; H02K5/10 ; H02K3/38

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.
Public/Granted literature
- US20200016734A1 BRUSHLESS MOTOR SYSTEM FOR POWER TOOLS Public/Granted day:2020-01-16
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