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:
Jul. 31, 2012
Filed:
Oct. 15, 2008
Young Tae Kim, Seoul, KR;
Jin San Kim, Gyunggi-do, KR;
Young Hwan Lim, Gyunggi-do, KR;
IL Oung Park, Seoul, KR;
Ta Kyoung Lee, Gyunggi-do, KR;
Young Tae Kim, Seoul, KR;
Jin San Kim, Gyunggi-do, KR;
Young Hwan Lim, Gyunggi-do, KR;
Il Oung Park, Seoul, KR;
Ta Kyoung Lee, Gyunggi-do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, KR;
Abstract
Disclosed herein is a method of manufacturing a hydrodynamic bearing in which a metal bearing made of sintered metal powder is internally subjected to chemical etching, to form hydrodynamic pressure grooves thereon, thus assuring a high-precision and reliable hydrodynamic bearing. The method includes: compressing metal powder that is a raw material of the bearing in a press unit, and sintering the compressed metal powder at a predetermined temperature, thus preparing a sintered bearing; removing foreign substances adhering to the sintered bearing through a deburring process, and pressing the sintered bearing into a desired shape; forming a hydrodynamic groove, configured to generate hydrodynamic pressure, on an internal surface of the shaped bearing using chemical etching; and conducting a post treatment of cleaning the bearing including the hydrodynamic grooves thereon and drying the bearing.