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:
Mar. 16, 2010
Filed:
Oct. 21, 2005
Jae-hyuk Han, Seoul, KR;
Dong-ho OH, Seoul, KR;
Yong-kyu Byun, Yongin-si, KR;
Cheol-soon Kim, Anyang-si, KR;
Jeong-seok Koh, Yongin-si, KR;
Nam-hoon Lee, Seoul, KR;
Ja-choon Koo, Seoul, KR;
Jae-hyuk Han, Seoul, KR;
Dong-ho Oh, Seoul, KR;
Yong-kyu Byun, Yongin-si, KR;
Cheol-soon Kim, Anyang-si, KR;
Jeong-seok Koh, Yongin-si, KR;
Nam-hoon Lee, Seoul, KR;
Ja-choon Koo, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A fluid dynamic bearing is constructed to support stably a rotating body to which a non-uniform force is applied, and a hard disk drive (HDD) employing the fluid dynamic bearing is provided. The fluid dynamic bearing includes a journal bearing part supporting a rotary shaft in a radial direction of the rotary shaft, a thrust part formed at one end of the rotary shaft, a thrust bearing part facing the thrust part and supporting the rotary shaft in a longitudinal direction of the rotary shaft, and a plurality of grooves formed on a surface of the thrust bearing part and/or the thrust part. The plurality of grooves include a first groove group including a plurality of grooves having the same shape and arrangement, and a second groove group adjacent to the first groove group and including at least one groove asymmetric with respect to the grooves of the first groove group.