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:
Jun. 03, 2014
Filed:
Mar. 11, 2013
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon, KR;
Inventor:
Satoru Sodeoka, Suwon, KR;
Assignee:
Samsung Electro-Mechanics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a hydrodynamic bearing assembly including a sleeve; and a shaft rotatably inserted into a shaft hole and constituting a bearing clearance, wherein at least one of an inner circumferential surface of the sleeve and an outer circumferential surface of the shaft includes upper and lower radial dynamic pressure grooves having a herringbone pattern, and conditional expressions a+b>c+d and b−a>c−d>0 are satisfied.