Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Reexamination Certificate
2005-02-22
2005-02-22
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Processes
With control of flow by a condition or characteristic of a...
C137S101000, C137S56100R, C418S196000
Reexamination Certificate
active
06857441
ABSTRACT:
A fluid metering device that preferably includes a substantially linear series of intermeshing gears. The fluid metering device includes an inlet port adjacent the intermeshing portion of each pair of gears within the series adjacent the point at which the pair of gears diverge. The device further includes an discharge port adjacent the intermeshing portion of each pair of gears within the series adjacent the point at which the pair of gears converge. The device is configured to convey liquid from a main inlet stream of liquid, through the inlet ports, and out the discharge ports at substantially equal rates. The device preferably includes a pressure balance inlet port and a pressure balance discharge port adjacent the exterior portion of each end gear within the series of gears for balancing forces exerted on the end gear by liquid passing through the various inlet and discharge ports.
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International Search Report from corresponding International Application No. PCT/US02/14999 dated Sep. 23, 2002.
Alston & Bird LLP
Hepperle Stephen M.
Roper Pump Company
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