Inertial fan for power tool
US12162124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2023 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Apr 24, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of cooling an electric motor configured for use in a power tool. The electric motor has a motor shaft rotatable about a motor axis. The power tool further includes a fan assembly attachable to the motor shaft and an energy storage device coupled to the motor shaft and to the fan assembly. The method includes activating the electric motor to supply torque to the motor shaft. The method further includes rotating the motor shaft and the fan assembly about the motor axis. The fan assembly generates an airflow to cool the electric motor. Moreover, the method includes supplying torque from the electric motor to the energy storage device and deactivating the electric motor to stall rotation of the motor shaft. The fan assembly continues to rotate about the motor axis to generate the airflow after rotation of the motor shaft has ceased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.