Rotary kinetic fluid motors or pumps – Axially opposed working fluid paths to or from runner – Pump impeller means
Reexamination Certificate
2011-05-17
2011-05-17
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
Axially opposed working fluid paths to or from runner
Pump impeller means
C415S116000, C415S206000, C416S199000
Reexamination Certificate
active
07942628
ABSTRACT:
A first compression stage and a second compression stage being arranged at positions adjacent to each other. The first centrifugal impeller and the second centrifugal impeller are arranged in such an orientation that back sides of the first centrifugal impeller and the second centrifugal impeller face to each other. A connection flow path is formed in the first housing and the second housing for introducing the compressed fluid from the first compression stage into the second compression stage. An upstream portion of the connection flow path is formed integrally with the first housing, and a downstream portion of the connection flow path is formed integrally with the second housing.
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Office Action mailed Jun. 1, 2009 in co-pending related U.S. Appl. No. 11/566,428.
English translation of Notice of Rejection issued in related co-pending Chinese Application dated May 9, 2008.
Hirata Yutaka
Kurihara Kazuaki
Takahara Nobusada
Takahashi Toshio
Ellis Ryan H
Griffin & Szipl, P.C.
Ishikawajima-Harima Heavy Industries Co. Ltd.
Look Edward
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