Power unit for portable chain saw
US8225776B2 · kind B2 · utility
1Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jan 27, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B17/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power unit for portable chain saws wherein an ignition coil is placed at a position so as to increase both the compactness and the cooling efficiency of the power unit.A coil support on which the ignition coil is supported is formed integratedly with a crank case; adjacent to an open port; and on a part of an external periphery of the flywheel, said second part being not enclosed by the air-guiding passage.The coil support extends from the crank case along a side of a muffler and forms an insulating gap from the muffler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.