Pumps – Motor driven – Fluid motor
Reexamination Certificate
2007-04-17
2007-04-17
Freay, Charles G. (Department: 3746)
Pumps
Motor driven
Fluid motor
C438S692000, C438S693000
Reexamination Certificate
active
10065275
ABSTRACT:
A flow control system includes a substantially rigid vessel with a process fluid reservoir situated in the rigid vessel is in fluid communication with an outlet. A movable member and/or a working fluid is situated in the rigid vessel so as to selectively expel process fluid from the outlet. Where a movable member is employed, movement of the movable member in a first direction causes process fluid to be drawn into an inlet and movement of the movable member in a second direction causes process fluid to be expelled from the outlet. In other implementations, the working fluid is metered into a working fluid reservoir to compress a flexible process fluid reservoir and expel process fluid therefrom.
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Emerson Electric Co.
Freay Charles G.
Locke Liddell & Sapp LLP
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