Arrangement in a motor saw
US4653189A · kind A · utility
93Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1985 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Jun 17, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S83/01
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electro-mechanical brake in a motor saw requires electric energy for the operation of the brake. This energy can, according to the invention, be surplus energy in the ignition system of the saw. Surplus energy exists usually only when the r.p.m. exceeds a certain value. A capacitor is charged by current from the system and is prepared to discharge through a coil to actuate the brake on a signal from a kickback sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.