Chainsaw
US9925685B2 · kind B2 · utility
3Cited by
26References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Apr 12, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B17/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chainsaw includes a chainsaw body, a guide bar and a saw chain. The chainsaw body includes an oil tank, an oil pump to supply oil stored in the oil tank to a sliding portion between the guide bar and the saw chain, a first extension chamber arranged above the oil tank and a second extension chamber arranged above the first extension chamber. The oil tank communicates with the first extension chamber via a first flow path, the first extension chamber communicates with the second extension chamber via a second flow path and a vent hole communicating with the outer space is formed in the second extension chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.