Gregory R Lyons

US Patent:

6989958, Jan 24, 2006

Filed:

Jun 16, 2003

Appl. No.:

10/462363

Inventors:

Don E. De Leo - Gilroy CA, US
Ta-Chang Fu - San Jose CA, US
Ungtae Kim - San Jose CA, US
Gregory Allen Lyons - Livermore CA, US
Sattar Malek - San Jose CA, US
Daniel Robert Stacer - Morgan Hill CA, US
Stanley Yen Wong - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B 5/012

US Classification:

360 9701

Abstract:

A hard disk drive has a motor mounting bracket with mounting screws that attach from outside the drive and external to the seal with a screw bolt pattern diameter that is larger than an outer diameter of the motor hub. This configuration greatly reduces contamination inside the disk drive since all contaminants due to the screws are sealed from entering the disk drive. Consequently, the bottom of the mounting bracket is extended to the form factor limit to increase the internal space that is provided for the stator/winding of the motor. In relatively high platter count disk drives, the bottom disk is positioned very close to the motor bracket with this approach, which normally would cause the air drag to increase drastically and thereby impede the performance of the disk drive. Bosses may be used on the bracket to accommodate blind tap hole depths from the external surface of the bracket.

US Patent:

7149052, Dec 12, 2006

Filed:

Aug 8, 2005

Appl. No.:

11/198984

Inventors:

Don E. De Leo - Gilroy CA, US
Ta-Chang Fu - San Jose CA, US
Ungtae Kim - San Jose CA, US
Gregory Allen Lyons - Livermore CA, US
Sattar Malek - San Jose CA, US
Daniel Robert Stacer - Morgan Hill CA, US
Stanley Yen Wong - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B 17/00

US Classification:

360 9701

Abstract:

A hard disk drive has a motor mounting bracket with mounting screws that attach from outside the drive and external to the seal with a screw bolt pattern diameter that is larger than an outer diameter of the motor hub. This configuration greatly reduces contamination inside the disk drive since all contaminants due to the screws are sealed from entering the disk drive. Consequently, the bottom of the mounting bracket is extended to the form factor limit to increase the internal space that is provided for the stator/winding of the motor. In relatively high platter count disk drives, the bottom disk is positioned very close to the motor bracket with this approach, which normally would cause the air drag to increase drastically and thereby impede the performance of the disk drive. Bosses may be used on the bracket to accommodate blind tap hole depths from the external surface of the bracket.