Grounding device for brushless electric motor
US9680355B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2015 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor includes a rotor assembly includes a rotor and a motor shaft secured to the rotor. The motor further includes stator coils. Circuitry of the motor includes electronic components that cooperatively operate to activate and deactivate the coils to cause the rotor assembly to rotate, and first and second power terminals. An electrically conductive outer housing surrounds the motor. An electrically conductive grounding tab is electrically connected to the first power terminal. The tab contacts a radially-inwardly facing surface of the outer housing to provide a electrostatic discharge path from the outer housing to the ground terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.