Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural rigidly related blade sets
Reexamination Certificate
2005-04-26
2005-04-26
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Plural rigidly related blade sets
C415S214100
Reexamination Certificate
active
06884031
ABSTRACT:
A pump assembly particularly for use in high pressure operations is disclosed, which pump assembly is a barrel casing cartridge pump assembly which includes a pump cartridge having a plurality of impeller stages, and a barrel body casing which encases a portion of the pump cartridge. The barrel casing includes a centrally located suction branch which directly feeds a first impeller stage which is located centrally of the pump cartridge. Each impeller of the pump cartridge includes an eye for receiving fluid, the arrangement being such that each eye faces towards the suction branch.
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Weir Pumps Ltd., Ok Range, Centrifugal Multistage Pumps for the Oil and Gas Industry, Publication WPL 93/6.
Edgar Richard A.
Gifford, Krass, Groh, Sprinkle, Anderson & Citkowski
Look Edward K.
Weir Pumps Limited
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