Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1984-07-25
1987-06-16
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
415170R, 277 28, F04D 2910
Patent
active
046733329
ABSTRACT:
A seal continuously maintains a condition of fluid sealing between a housing and a shaft rotatably mounted in the housing, independently of the speed of rotation of the shaft. The seal includes a higher speed seal and a lower speed seal each disposed between the housing and the shaft. One of the seals is positioned axially stationary with respect to the shaft. The other of the seals is mobile (either axially or radially) with respect to the shaft, between a first position in sealing contact with the housing and shaft, and a second position out of sealing contact with the housing and shaft. Preferably, the lower speed seal is mobile, so as to be moved out of contact with the shaft when the higher speed seal operates effectively, so as to minimize wear on the seal.
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Garrett Robert E.
Kwon John
Teledyne Industries Inc.
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