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. 22, 2002
Filed:
Jun. 05, 1998
Yasunobu Fujita, Kanagawa, JP;
Masao Yamamoto, Kanagawa, JP;
Kouichi Hachiya, Kanagawa, JP;
Atsushi Yokouchi, Kanagawa, JP;
Toshikazu Yabe, Kanagawa, JP;
Emiko Shiraishi, Kanagawa, JP;
Michiharu Naka, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A rolling bearing for an HDD being excellent in the resistance to fretting wear, capable of lowering the torque and relieving the torque change and having a long life while exerting no undesirable effect on various bearing properties. A rolling bearing for hard disk drives wherein a cage supports a plural number of rolling elements located between an inner ring and an outer ring and sealing members fixed to the both ends in the axial direction of one of said inner ring and said outer ring are opposite to each other, wherein a lubricating oil has been injected into the bearing space formed between said sealing members at the both ends in the axial direction so as to amount to 1 to 50% by volume of the bearing space.