Invention Grant
- Patent Title: Electric motor for a power tool
-
Application No.: US15676214Application Date: 2017-08-14
-
Publication No.: US10476350B2Publication Date: 2019-11-12
- Inventor: Jeffery C. Hessenberger , Michael Kolden , Andrew T. Beyerl
- 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 ; H02K7/04 ; H02K9/06

Abstract:
An electric motor includes first and second balancing members coupled to an output shaft for rotation with a rotor. The first and second balancing members substantially balance a mass of the rotor about a longitudinal axis of the output shaft to reduce vibrations of the electric motor during use. The first balancing member includes a brass bushing supported on the output shaft adjacent a first face of the body of the rotor. The brass bushing includes a hole drilled into an outer circumference of the brass bushing providing a first balancing feature of the electric motor. The second balancing member includes a fan supported on the output shaft adjacent a second face of the body of the rotor. The fan includes a plurality of fins extending from a first face of the fan and a second balancing feature of material removed from a second face of the fan.
Public/Granted literature
- US20170346364A1 ELECTRIC MOTOR FOR A POWER TOOL Public/Granted day:2017-11-30
Information query