Fluid handling – Systems – Flow path with serial valves and/or closures
Reexamination Certificate
2005-07-19
2005-07-19
Bastianelli, John (Department: 3751)
Fluid handling
Systems
Flow path with serial valves and/or closures
C251S129070, C251S325000, C335S273000
Reexamination Certificate
active
06918409
ABSTRACT:
Valve structures include a combination of spool valving and poppet valving. A spool function of the structure regulates the flow of a liquid, such as the flow of fuel to a diesel engine. A poppet function provides a low leakage in the valve in a closed or cut-off state. With this combination in a valve, spool clearance can be increased reducing the cost and precision machining/assembly of the components, because the poppet to seat closure provides the sealing function at cut-off. Included are an air-gap flux adjustment to adjust responsiveness to control current, and a force pre-load adjustment.
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Bastianelli John
Fredrick Kris
Honeywell International , Inc.
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