Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Resilient – flexible – or resiliently biased
Patent
1988-03-24
1990-07-31
Look, Edward K.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Resilient, flexible, or resiliently biased
4151701, F04D 2908
Patent
active
049446533
ABSTRACT:
A pump for use with a hydrotherapy tub or spa is provided wherein the compression of the pump seal located between the impeller and the drive shaft opening is controllable such that a minimum compression and thus minimum heat generation occurs at a no-load or dry condition of the pump, but maximum compression and thus maximum sealing occurs at a full-load condition. The impeller is mounted on the drive shaft in an axially movable manner with the impeller eye facing the motor so that axial loading by the impeller under load is toward the motor thus compressing the interposed seal.
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Jacuzzi Inc.
Kwon John T.
Look Edward K.
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