Hydrodynamic thrust bearing

Details Hydrodynamic thrust bearing Hydrodynamic thrust bearing

2005-09-20

2005-09-20

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S107000

Reexamination Certificate

active

06945696

ABSTRACT:
A hydrodynamic thrust bearing, particularly forming a part of a bearing system for a rotary bearing of spindle motors utilized to power hard disk drives. The thrust bearing includes at least one annular thrust plate and a counter bearing corresponding to the thrust plate. The thrust plate is fixedly mounted on a shaft rotatably supported by means of a radial bearing system. The thrust plate is arranged on the shaft which is provided with an axial bore in the area where the thrust plate is to be positioned. A spherical element fixing the thrust plate is pressed into the axial bore. An outer diameter of the fixing element is greater than the inner diameter of the axial bore. This type of press connection between the thrust plate and the shaft allows comparatively thinner thrust plates to be used while the performance of the thrust bearing remains the same or improves.

REFERENCES:
patent: 5357163 (1994-10-01), Minakuchi et al.
patent: 6357916 (2002-03-01), Saeki et al.
patent: 6361216 (2002-03-01), Takahashi et al.
patent: 6398413 (2002-06-01), Inoue et al.
patent: 2004/0114840 (2004-06-01), Gomyo
patent: 196 37 014 (1998-03-01), None
patent: 274954 (1927-07-01), None
patent: 2000310220 (2000-11-01), None
patent: 2000324753 (2000-11-01), None
Search Report, Germany, Jul. 2, 2003.

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