Power tool
US8888566B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2011 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B41/007
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved hand-held power tool is provided which can effectively reduce whirling vibration caused by imbalance of a rotating element. The power tool has a grip that is connected to a tool body and designed to be held by a user and a self-synchronous mechanism that reduces whirling vibration caused in the tool body or the grip when the tool bit is driven. The self-synchronous mechanism is of a phase variable type, having a rotating body which serves as a vibrator and is rotationally driven by a driving source different from a driving source for the tool bit. The self-synchronous mechanism is disposed in the tool body or the grip in which whirling vibration is caused, and arranged such that a phase of vibration of the rotating body is automatically tuned to a phase of the whirling vibration, thereby reducing the whirling vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.