Inertial fan for power tool
US11667021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | May 14, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power tool includes a motor having a motor shaft that rotates about a motor axis in a first rotational direction. The power tool also includes a fan assembly attachable to the motor shaft for rotation in the first rotational direction. The fan assembly includes a fan body, a bearing having a race that rotates with the fan body, and a flywheel rotatably affixed to the fan body. The race is freely rotatable relative to the motor shaft in the first rotational direction, and fixed against rotation relative to the motor shaft in a second rotational direction opposite the first rotational direction. The flywheel has a central portion that defines a central bore, and the race is received into the central bore and rotatably affixed to the flywheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.