Etoli E Wolff

US Patent:

20030030335, Feb 13, 2003

Filed:

Jan 21, 2000

Appl. No.:

09/489293

Inventors:

Dirk Krieger - Woodside CA, US
Klaus Kloppel - Watsonville CA, US
Etoli Wolff - Sunnyvale CA, US
Steven Parsoneault - Scotts Valley CA, US
Don Macleod - Santa Cruz CA, US

International Classification:

H02K007/00

US Classification:

310/06700R

Abstract:

A cartridge or motor which includes a shaft with a thrust plate at one end; the counterplate which lies across the end of the shaft is welded to an extension of the sleeve in which the counterplate is fit.

US Patent:

62963902, Oct 2, 2001

Filed:

Feb 24, 1999

Appl. No.:

9/257469

Inventors:

Etoli Wolff - Sunnyvale CA
Samnathan Murthy - Santa Cruz CA
Norbert Steven Parsoneault - Scotts Valley CA
Hans Leuthold - Santa Cruz CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

F16C 1710

US Classification:

384112

Abstract:

A hydrodynamic bearing having a shaft relatively rotatable with rest to a surrounding sleeve and having a thrust plate of or near one end thereof. The shaft and sleeve define a journal bearing extending substantially the full length of the two relatively rotating parts.

US Patent:

60658770, May 23, 2000

Filed:

Oct 23, 1998

Appl. No.:

9/178528

Inventors:

Hans Leuthold - Santa Cruz CA
Alan Lyndon Grantz - Aptos CA
Matt L. Shumway - San Jose CA
Norbert S. Parsoneault - Scotts Valley CA
Etoli Wolff - Sunnyvale CA
Michael D. Kennedy - Boulder Creek CA
Samnathan Murthy - Santa Cruz CA
Raquib U. Khan - Pleasanton CA
Mohamed M. Rahman - San Jose CA
Wesley R. Clark - Watsonville CA

Assignee:

Seagate Technology, Inc. - Scotts Valley CA

International Classification:

F16C 3206
F16C 1722

US Classification:

384278

Abstract:

A bimetallic part is formed from metals or comprises metals with different thermal expansion coefficients. A first element defines the part and defines one surface of the bearing gap and has a first coefficient of expansion and a second element is wholly or partially inserted into and constrained within the first element and having a different coefficient of thermal expansion so that as the temperature changes, the stress created by the differential expansion of the two elements will cause the overall part to deform elastically as a function of temperature. This deformation will cause the gap, the elements being properly selected, to narrow as temperature rises (and viscosity falls) and to widen as temperature falls (and viscosity rises).

US Patent:

61485012, Nov 21, 2000

Filed:

Apr 14, 1998

Appl. No.:

9/060030

Inventors:

Alan Lyndon Grantz - Aptos CA
Marten Byl - Los Gatos CA
Matt L. Shumway - Scotts Valley CA
Norbert Parsoneault - Scotts Valley CA
Etoli Wolff - Sunnyvale CA
Hans Leuthold - Santa Cruz CA
Roger Allen Addy - Gilroy CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5127

US Classification:

2960303

Abstract:

A method of fabricating a spindle hub assembly (90) including precision machining critical surfaces of the hub components (60, 33) that mount onto a spindle shaft (30) and accurately locate the critical surfaces for positioning of bearing cones (35, 36) on the shaft in spaced relationship of bearing seats (34) on the hub (60, 33) to ensure stable rotation of the hub on the shaft.