Saw chain tensioning arrangement for a chain saw
US4567658A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1984 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Jan 17, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/7239
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a tensioning arrangement for adjusting the tension in the saw chain of a chain saw. The cutter bar for the saw chain has an elongated opening for engaging the guiding means upon which the cutter bar is displaceably mounted and guided in the housing of the chain saw. The tensioning arrangement includes a bolt-like drive member which extends through the elongated opening of the cutter bar and acts upon an output member via a transmission. The output member is configured as a slider which entrains the cutter bar for displacing the latter to tension the saw chain. The drive member extends through the elongated opening and beyond the housing as well as the cover of the sprocket wheel to the outside so that it can be adjusted conveniently and simply from outside of the housing for tensioning the saw chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.