Tree harvester guide bar
US5056224A · kind A · utility
23Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1991 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Jan 7, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/263
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A guide bar for a saw chain mounted to the boom of a tree harvester. As typical for such guide bars, oilhole holes are provided to receive oil for channeling of the oil to the edge grooves wherein the saw chain is entrained. Not typical of such guide bars is the provision of a pattern of inter-connecting oil channels in the bar for channeling oil to various positions on the bar edge including the bar edges adjacent each oil hole and at the bar nose. C-shaped valves in the oil holes are manually adjusted to control the flow of oil to the various positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.