Title:
FLUID DYNAMIC BEARING SECONDARY CAPILLARY SEAL RESERVOIR
Document Type and Number:
WIPO Patent Application WO2004001740
Kind Code:
A3
Abstract:
The present invention relates to the field of fluid dynmaic bearings. Specifically, the present invention provides a secondary fluid resrvoir for the fluid used in a fluid dynamic bearing in a high-speed spindle motor assembly. More specifically the invention relates to a fluid dynamic assembly for disk drive comprising an annular bearing cone (506) having a central annular opening, a bottom, a top and a middle, upper walls angling out from the top to the middle, lower walls angling out from the bottom to the middle to meet the upper walls; a bearing sleeve (504) adjacent to the annular bearing cone; a shield seal member (502) abutting the bearing sleeve and adjacent the annular bearing cone; an annular shield member (522) above the annular bearing cone; a first fluid reservoir between the annular bearing cone (506) and the shield seal member (502); a second fluid reservoir between the annular bearing cone (506) and the annular shield member (522); and capillary path means (513) between the first fluid reservoir and the second fluid reservoir.
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Inventors:
NOTTINGHAM ROBERT
PARSONEAULT NORBERT
LEBLANC JEFFRY
HERNDON TROY
PARSONEAULT NORBERT
LEBLANC JEFFRY
HERNDON TROY
Application Number:
PCT/US2003/019572
Publication Date:
February 12, 2004
Filing Date:
June 20, 2003
Export Citation:
Assignee:
SEAGATE TECHNOLOGY LLC (US)
International Classes:
F16C17/10; F16C17/26; F16C33/10; G11B19/20; H02K5/16; H02K7/08; H02K21/22; (IPC1-7): G11B19/20; F16C32/06; F16C33/74; H02K7/08
Foreign References:
| US6118620A | 2000-09-12 | |||
| US6181039B1 | 2001-01-30 | |||
| US6144523A | 2000-11-07 | |||
| US5709480A | 1998-01-20 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 16 8 May 2001 (2001-05-08)
ZHANG Q D ET AL: "DESIGN OF A HYBRID FLUID BEARING SYSTEM FOR HDD SPINDLES", IEEE TRANSACTIONS ON MAGNETICS, IEEE INC. NEW YORK, US, no. 2, 1999, pages 821 - 826, XP000883128, ISSN: 0018-9464
ZHANG Q D ET AL: "DESIGN OF A HYBRID FLUID BEARING SYSTEM FOR HDD SPINDLES", IEEE TRANSACTIONS ON MAGNETICS, IEEE INC. NEW YORK, US, no. 2, 1999, pages 821 - 826, XP000883128, ISSN: 0018-9464
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