Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1998-03-31
2000-09-19
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
415113, 415111, 415176, 415203, 4152141, 415229, F01D 2522
Patent
active
061202436
ABSTRACT:
A pump comprises a housing having a shaft bore and a pump chamber, a bearing provided for an inner periphery of the shaft bore, a shaft rotatively supported by the shaft bore through the bearing, and a transporting member connected to one end portion of the shaft for transporting fluid by imparting mechanical energy to the fluid sucked in said pump chamber. The bearing is constituted as a sliding bearing, a first region of a sliding surface formed to the sliding bearing is communicated with a high-pressure portion to be formed so as to provide a high pressure when constructed as a fluid passage, while a second region of the sliding surface formed to the sliding bearing is communicated with a low-pressure portion to be formed so as to have a relatively lower pressure than that of the high-pressure portion when constructed as a fluid passage, so that the fluid is supplied to the sliding surface of said sliding bearing by the action of a differential pressure between the high-pressure portion and the low-pressure portion of the fluid passage so as to lubricate the sliding surface.
REFERENCES:
patent: 3671137 (1972-06-01), Ball
patent: 4958988 (1990-09-01), Regev
patent: 4971525 (1990-11-01), Nakayoshi et al.
patent: 5163812 (1992-11-01), Klaus
patent: 5531564 (1996-07-01), Anttonen et al.
Look Edward K.
Nguyen Ninh
NOK Corporation
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