Combustion powered tool with combustion chamber lockout
US5909836A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1997 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Oct 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A combustion powered tool having a self-contained internal combustion power source constructed and arranged for creating a combustion for driving a driver blade to impact a fastener and drive it into a work piece includes a housing constructed and arranged to enclose the power source, a combustion chamber defined at an upper end of the housing, a cylinder disposed in the housing to be in fluid communication with the combustion chamber, a piston associated with the driver blade and configured for reciprocal movement within the cylinder between a start position located at a first end of cylinder and a driving position located at a second end of the cylinder, a gas control device for periodically opening the combustion chamber to atmosphere, and a delay apparatus connected to the gas control device for delaying the opening of the combustion chamber until the piston returns to the start position after driving the fastener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.