Pumps – Processes
Reexamination Certificate
2005-03-22
2005-03-22
Tyler, Cheryl J. (Department: 3746)
Pumps
Processes
C417S300000, C417S304000, C417S286000, C417S288000, C417S426000, C417S428000
Reexamination Certificate
active
06869274
ABSTRACT:
A multiple stage pump having valves upstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure variations. The multiple stage pump includes a first pump in a first stage and a second pump in a second stage. At least one valve is upstream from one of the first pump and the second pump in at least one of the first stage and the second stage. A common branch line connects the first stage and the second stage to a common hydraulic system.
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McGuireWoods LLP
Siemens Diesel Systems Technology
Solak Timothy P.
Tyler Cheryl J.
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