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:
Jan. 23, 2001
Filed:
Jul. 17, 1998
Applicant:
Inventors:
Pyongwon Yim, Sunnyvale, CA (US);
Hae Sung Kwon, Sunnyvale, CA (US);
Tho Pham, Milpitas, CA (US);
Hyung Jai Lee, Cupertino, CA (US);
Assignee:
Samsung Electronics Company, Ltd., Suwon, KP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 1/708 ;
U.S. Cl.
CPC ...
G11B 1/708 ;
Abstract
A spindle motor assembly for a hard disk drive which has a fluid filled tube that dynamically balances the spindle motor. The assembly may include a hub which is rotated by an internal motor. A plurality of disks may be coupled to the hub and separated by a number of spacers. In one embodiment, the fluid filled tube is attached to the hub. In another embodiment, the fluid filled tube is attached to the spacer. The fluid within the tube is allowed to move during rotation of the hub. Movement of the fluid may dynamically balance the spindle motor.