Invention Grant
- Patent Title: Brushless motor for a power tool
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Application No.: US16525964Application Date: 2019-07-30
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Publication No.: US10673305B2Publication Date: 2020-06-02
- Inventor: Andrew T. Beyerl , Keith Boulanger , Alex Huber , William A. Elger , Jeffrey M. Wackwitz
- Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
- Applicant Address: US WI Brookfield
- Assignee: Milwaukee Electric Tool Corporation
- Current Assignee: Milwaukee Electric Tool Corporation
- Current Assignee Address: US WI Brookfield
- Agency: Michael Best & Friedrich LLP
- Main IPC: H02K7/14
- IPC: H02K7/14 ; B25F5/00 ; H02K29/08 ; H02K1/18 ; H02K5/15 ; H02K7/08 ; H02K11/21 ; H02K5/16 ; H02K7/116 ; H02K21/14 ; H02K9/06 ; H02K11/215

Abstract:
A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor including a stator assembly including a stator core having stator laminations with an annular portion and inwardly extending stator teeth. The stator assembly defines a stator envelope in an axial direction extending between axial ends of stator end caps of the stator assembly. The brushless motor further includes a rotor assembly including a rotor core having rotor laminations and defining a central aperture that extends in the axial direction and that receives a shaft, and a position sensor board assembly including position sensors and configured to provide position information of the rotor core to the controller. The rotor assembly and the position sensor board assembly are provided at least partially within the stator envelope.
Public/Granted literature
- US20190356197A1 BRUSHLESS MOTOR FOR A POWER TOOL Public/Granted day:2019-11-21
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