Multi-position operator-carried four-cycle engine
US6047678A · kind A · utility
32Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2201/021
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A power tool having a rotary implement driven by a four-cycle engine. The engine crankcase is vented via an axial passageway which extends through at least one cam shaft axial shaft of the crankshaft and cam shaft. The rotating shaft member inhibits the escape of oil when the engine is running due to centrifugal force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.