Bearings – Rotary bearing – Fluid bearing
Reexamination Certificate
2008-03-27
2009-06-02
Hannon, Thomas R (Department: 3656)
Bearings
Rotary bearing
Fluid bearing
C384S317000
Reexamination Certificate
active
07540663
ABSTRACT:
A hydrodynamic fluid film bearing for supporting a rotation shaft of a turbo or rotary apparatus includes a sleeve having a circular inner opening for receiving a rotation shaft therein, at least one metallic foil member of arc shape having one end fixed to the inner surface of the sleeve and arranged along the inner opening of the sleeve, and at least one elastic member disposed at the sleeve between the sleeve and the foil member. A bearing housing for receiving a bearing of a rotary apparatus is further provided, in which the bearing housing includes a circular opening for receiving the bearing therein, and the circular inner opening of the bearing housing includes grooves for cooling air passage formed at regular interval in the axial direction on the inner surface of the bearing housing. The bearing received in the bearing housing is preferably a hydrodynamic fluid film bearing.
REFERENCES:
patent: 4167295 (1979-09-01), Glaser
patent: 4195395 (1980-04-01), Silver et al.
patent: 6698929 (2004-03-01), Choi et al.
patent: 6698930 (2004-03-01), Akizuki et al.
patent: 7364363 (2008-04-01), Kim et al.
patent: 62052216 (1987-03-01), None
Cho Se-hoon
Yum Byung-yong
Hannon Thomas R
Park & Associates IP Law LLC
Samsung Techwin Co. Ltd.
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