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:
Oct. 12, 2010
Filed:
Oct. 05, 2005
Shinji Fujita, Fukuoka, JP;
Hiroyuki Uchida, Samukawa, JP;
Yasuo Murakami, Hadano, JP;
Koichi Hachiya, Sagamihara, JP;
Daiju Takahashi, Setagaya-ku, JP;
Shinji Fujita, Fukuoka, JP;
Hiroyuki Uchida, Samukawa, JP;
Yasuo Murakami, Hadano, JP;
Koichi Hachiya, Sagamihara, JP;
Daiju Takahashi, Setagaya-ku, JP;
NSK, Ltd., Tokyo, JP;
Abstract
A rolling device in which damage such as seizure or wear is less liable to occur and which has a long life, even when used under severe conditions such as high speed, heavy load, high temperature and insufficient lubrication. A thrust needle roller bearing includes an inner ring, outer ring, and a plurality of rolling elementsrollably arranged between a raceway surfaceof inner ringand a raceway surfaceof outer ring. A lubricant film consisting of a solid lubricant is coated over an area equivalent to an area ratio of 75% or more of at least one member of the group consisting of raceway surfaceof inner ring, raceway surfaceof outer ring, and a rolling contact surfaceof rolling element. The thickness of the lubricant film is preferably 0.05 μm or more and 8 μm or less.