Combustion-powered, fastener-driving tool generating sparks in succession when triggered
US7467739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Mar 19, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A combustion-powered, fastener-driving tool includes a cylinder and a combustion chamber disposed on top of the cylinder that accommodates a gaseous mixture of existing air in the combustion chamber and fuel injected therein. A spark plug generates a spark to combust the gaseous mixture in the combustion chamber. A trigger produces the spark in the spark plug when operated. A piston is movably supported in the cylinder and driven by combustion in the combustion chamber. A driving blade is coupled to the piston for driving a fastener. A spark controller is provided for generating a plurality of sparks in succession with the spark plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.