Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Reexamination Certificate
2005-12-27
2005-12-27
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
C137S613000, C251S045000
Reexamination Certificate
active
06978798
ABSTRACT:
An approach for gas flow control is achieved with an arrangement involving a sealed housing with relatively few components. According to an example embodiment, a gas flow controller comprises a gas inlet, a gas outlet, and an auxiliary chamber including a partition wall that separates it from the gas inlet. By means of a differential pressure between the inlet and the auxiliary chamber, a valve arrangement is actuated through a diaphragm provided on the partition wall to control a flow from the gas inlet to the gas outlet. A servo pump2is provided on the partition wall and produces the differential pressure by pumping the gas from the auxiliary chamber to the gas inlet.
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Hepperle Stephen M.
Honeywell International , Inc.
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