Safety mechanism for a rotary hammer
US7730963B2 · kind B2 · utility
27Cited by
25References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2009 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jan 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with the rotary shaft; monitoring rotational motion of the power tool in relation to the inertial mass during operation of the power tool; and activating a protective operation based on the rotational motion of the power tool in relation to the inertial mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.