Automatic oiling system for chain saw
US4353163A · kind A · utility
26Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Oct 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7934
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A portable power driven chain saw (20) having an automatic oiling system (54) including an externally adjustable control valve (60) which meters an adjustable flow of oil (69) therethrough unidirectionally and to stop the flow in the valve when the chain saw (20) is stopped. An improved oil pump (58) is provided of the rotor (72) vane type. The adjustable member (124) of the control valve (60) has a longitudinal opening (130) for the flow of oil (69) therethrough to the guide bar (24), also the opening (130) slidably carries the stem (144) of the check valve (140) which provides for the unidirectional flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.