Hand held power tool
US6938587B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2003 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Mar 27, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2400/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A power tool including a main section and a handle section. The main section includes an internal combustion engine and a housing at least partially surrounding the engine. The engine includes a cylinder, a spark plug, and a muffler. The handle shaft extending from the main section. The shaft forms a handle for the power tool and houses a drive shaft from the engine therein. The housing forms a cover section over a transmission assembly between the engine and the drive shaft. The cover section includes a scroll form to channel air flow pushed by the transmission assembly. The housing further comprises a spark plug boot to substantially prevent air from exiting the housing at the spark plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.