Chain saw with tension adjustment
US8434236B2 · kind B2 · utility
13Cited by
19References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2008 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Feb 10, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B17/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chain saw apparatus has a body, a guide bar extending from the body, a drive sprocket rotatably mounted to the body, a chain affixed to the drive sprocket and to the guide bar, an engagement device positioned on the body and cooperative with the guide bar so as to allow the guide bar to move toward and away from the body, and pushing device for automatically moving the guide bar away from the drive sprocket. The pushing device has a slide and an elastic component. The slide bears against a rear end of the guide bar. The elastic component urges between the body and the slide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.