Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1994-09-06
1996-02-06
Look, Edward K.
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
4151701, F04D 2910
Patent
active
054891876
ABSTRACT:
A centrifugal pump including a pump casing with internal walls defining a pump chamber and a seal cavity or chamber to the rear of the pump chamber. A rotatable impeller within the pump chamber is rotated by an impeller shaft extending through the seal cavity. Seal structure exposed to the seal cavity seals the impeller shaft to the casing. Vane structures joined to the wall defining the seal cavity produce a movement in the pumpage circulated in the seal cavity effective to remove debris and air bubbles that otherwise collect in the seal cavity.
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Larson James A.
Look Edward K.
Roper Industries, Inc.
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