专利检索 ap:("Masayuki Ishikawa" OR "Hidetoshi Sunohara" OR "Nobuyuki Nakamori" OR "Takao Nakae") AND inv:"Hidetoshi Sunohara" 第 1 页

1.

发明授权
Oil dynamic pressure bearing device and method for manufacturing the same 有权

公开(公告)号：US06659646B2

公开(公告)日：2003-12-09

申请号：US10145577

申请日：2002-05-13

申请人： Masayuki Ishikawa , Hidetoshi Sunohara , Nobuyuki Nakamori , Takao Nakae

发明人： Masayuki Ishikawa , Hidetoshi Sunohara , Nobuyuki Nakamori , Takao Nakae

IPC分类号： F16C3206

CPC分类号： F16C33/107 , F16C17/02 , F16C17/026 , F16C33/102 , F16C2370/12 , G11B19/2018 , Y10T29/49639

摘要： An oil dynamic pressure bearing device comprises a bearing, a shaft freely rotatably supported by the bearing in a non-contact manner, and a dynamic pressure bearing section defined by at least one dynamic pressure groove on at least one side of the shaft and the bearing for generating dynamic pressure by a lubricant fluid filled in a minute gap between the shaft and the bearing. Grinding scratches are formed on the dynamic pressure bearing section in a circumferential direction of the dynamic pressure bearing section. The dynamic pressure groove may be formed only on one side of either the shaft or the bearing at the dynamic pressure bearing section and the grinding scratches are formed only on the other side.