Chain tension device in a chain saw
US6148525A · kind A · utility
11Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B17/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chain tension device for tensioning a cutting chain of a chain saw utilizing a guide bar having an outer periphery and a drive sprocket. The chain saw body supports the guide bar, the sprocket and a drive source. A cutting chain is wound around the sprocket and the outer periphery of the guide bar and a leaf spring is supported by the chain saw body and interposed between the guide bar and the sprocket. The leaf spring abuts and biases the guide bar away from the sprocket so as to apply automatically an appropriate amount of tension to the cutting chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.