Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1997-10-15
2000-03-14
Verdier, Christopher
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
415116, 261 341, 261DIG71, F04D 2910, F04D 3100
Patent
active
060364343
ABSTRACT:
A centrifugal pump having a rotatable impeller that operates to drain liquid into the intake of the pump. An air-introduction passage connects with a subatmospheric pressure region at the back of the impeller. Air introduced through this passage is mixed with a portion of the fluid pumped, and the air-fluid mixture is expelled as the discharge of the pump.
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Olin Gary L.
Qandil Mark M.
Ray Robert B.
Roper Holdings, Inc.
Verdier Christopher
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