Rotary kinetic fluid motors or pumps – With shaft connected fluid force subjected thrust balancing... – Motor shaft
Reexamination Certificate
2006-03-10
2009-08-18
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
With shaft connected fluid force subjected thrust balancing...
Motor shaft
C415S229000, C384S275000, C384S420000
Reexamination Certificate
active
07575413
ABSTRACT:
A centrifugal pump has a stationary diffuser with a bore. A thrust bearing has a tubular portion that inserts into the bore. The thrust bearing has an external shoulder that contacts a support surface in the bore of the diffuser for transmitting downward thrust from an upstream impeller to the diffuser. The thrust bearing has an internal shoulder for transmitting upward thrust from a downstream impeller to the diffuser.
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Brunner Christopher
DeLong Robert C.
Poretti Arturo L.
Semple Ryan P.
Shafer Terry W.
Baker Hughes Incorporated
Bracewell & Giuliani LLP
Look Edward
Younger Sean J
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