Spring release starter for chain saw
US6834633B2 · kind B2 · utility
9Cited by
62References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Sep 15, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F1/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A starter mechanism for an internal combustion engine having a spring that is wound during the starting operation of the internal combustion engine. As the operator pulls the starter rope of the engine the starter spring begins to wind creating a force within the spring. Once the spring force overcomes the compression force of the piston the spring will unwind thereby turning the crankshaft of the engine and consequently starting the engine. The starter rope is returned to the housing of the starter mechanism by the use of a rope return spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.