Internal combustion fastener driving tool fuel metering system
US6006704A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a system for delivering a metered amount of fuel for internal combustion in a fastener driving tool. The fuel metering system includes a port for fuel, a regulator, and a shuttle valve. The shuttle valve particularly includes a metering chamber housing, a metering chamber defined by the metering chamber housing, a combustion check valve, and one gating valve. The metering chamber and the gating valve can be arranged and configured to provide asynchronous fluid communication between the metering chamber and combustion chamber, or between the metering chamber and the regulator. The combustion check valve is arranged and configured to prevent fluid flow from the combustion chamber to the metering chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.