Internal-combustion engines – Free piston – Single chamber; one piston
Patent
1997-12-31
1999-12-28
Kamen, Noah P.
Internal-combustion engines
Free piston
Single chamber; one piston
227 10, F02B 7100
Patent
active
060067047
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.
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Phillips Alan
Schnell John
Kamen Noah P.
Porter-Cable Corporation
LandOfFree
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