Foil hydrodynamic journal bearing and method of...

Details Foil hydrodynamic journal bearing and method of... Foil hydrodynamic journal bearing and method of...

2007-03-06

2007-03-06

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S106000

Reexamination Certificate

active

11079775

ABSTRACT:
A multi-lobe bearing is of simple construction such that a foil sheet in the form of a closed loop is arranged on a journal shaft by joining both ends of two sheets together, with a bearing gap therebetween and filling a viscoelastic body in an air gap between the foil sheet and an inside of a bearing holding member, whereby the bearing gap between the journal shaft and the foil sheet is configured to be liable to generate a fluid pressure. Also, the bearing is simply constructed to be made easy in assembly, and in particular, appropriate in bearing the journal shaft having a small diameter.

REFERENCES:
patent: 3359613 (1967-12-01), Rye
patent: 3424505 (1969-01-01), Pizzitola
patent: 4170389 (1979-10-01), Eshel
patent: 4647227 (1987-03-01), Clebant
patent: 5114244 (1992-05-01), Dunham et al.
patent: 5519274 (1996-05-01), Scharrer
patent: 09-014262 (1997-01-01), None
Dellacorte C. et al., “Load Capacity Estimation of Foil Air Journal Bearings for Oil-Free Turbomachinery Applications ©”, Tribology Transactions, (2000), vol. 43, No. 4, pp. 795-801.

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