Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1984-07-09
1986-08-19
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
415173R, 415174, 277 92, 277169, 277165, F04D 2912, F16J 1538
Patent
active
046066985
ABSTRACT:
A centrifugal blood pump has a tapered seal between a pump housing wall and a hub of an impeller which provides a fluid tight seal interface surrounding a drive shaft which is connected to the impeller and which extends through the pump housing wall. The tapered seal has a maximum radial dimension adjacent to the wall and a minimum radial dimension adjacent the hub so that air bubbles (which seek the smallest shaft diameter) will not insulate the seal interface edges from fluid flow. The seal interface, which is perpendicular to the drive shaft axis, is located in a high flow area between the wall and the hub to increase cooling effects.
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Clausen Earl W.
Hubbard Lloyd C.
Garrett Robert E.
Li H. Edward
MICI Limited Partnership IV
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