Hydrodynamic bearing device, spindle motor, and recording...

Details Hydrodynamic bearing device, spindle motor, and recording... Hydrodynamic bearing device, spindle motor, and recording...

2011-05-10

2011-05-10

Blouin, Mark (Department: 2627)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

07940492

ABSTRACT:
In order to prevent oil leakage in a hydrodynamic bearing device comprising an opening section in close proximity to a radial bearing and a lubricating fluid reservoir, a shaft10, thrust flange16, sleeve11, seal plate21, and stopper plate20are provided, a radial dynamic pressure bearing is formed in a radial clearance between the shaft10and sleeve11, and a thrust dynamic pressure bearing is formed in a thrust direction clearance between the sleeve11and thrust flange16. A connecting hole11dis formed that connects a gap between the sleeve11and seal plate21and a thrust direction gap between the sleeve11and thrust flange16. The relationship A<B<C is satisfied, where A is a radial clearance, B is a clearance between an outer peripheral surface of the shaft10and an inner peripheral surface of the seal plate21, and C is a clearance between a lower surface of the seal plate21and an upper end face of the sleeve11.

REFERENCES:
patent: 6982510 (2006-01-01), Ajello et al.
patent: 7133250 (2006-11-01), Herndon et al.
patent: 7262935 (2007-08-01), LeBlanc
patent: 7391139 (2008-06-01), Yamamoto
patent: 2008/0129139 (2008-06-01), Wakitani et al.
patent: 2008/0304776 (2008-12-01), Asada et al.
patent: 2004-183865 (2004-07-01), None

Affiliated with

Also associated with

Rating

Hydrodynamic bearing device, spindle motor, and recording... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrodynamic bearing device, spindle motor, and recording..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrodynamic bearing device, spindle motor, and recording... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2686720