The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1999
Filed:
Mar. 26, 1997
Applicant:
Inventors:
Thomas Edward Karis, San Martin, CA (US);
Holavanahally Seshachar Nagaraj, Morgan Hill, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; H02K / ;
U.S. Cl.
CPC ...
360 9908 ; 310 / ; 310 90 ;
Abstract
A magnetic recording data storage device includes a magnetic recording disk, a spindle motor, a head supported on an air bearing carrier and an actuator connected to the head carrier for moving the head across the rotating disk. The spindle motor has lubricant covered ball bearings where the lubricant includes an alkali hydroxystearate, an ester oil, a dialkyldiphenylamine and a dialkyldithiocarbamate.