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:
Feb. 17, 2015
Filed:
Sep. 17, 2010
Yasuhiko Shimizu, Kuwana, JP;
Tsukasa Toyoda, Kuwana, JP;
Yoriko Kosaka, Kuwana, JP;
Yuuki Ishizaki, Kuwana, JP;
Fumihiro Murakami, Kuwana, JP;
Yasuhiko Shimizu, Kuwana, JP;
Tsukasa Toyoda, Kuwana, JP;
Yoriko Kosaka, Kuwana, JP;
Yuuki Ishizaki, Kuwana, JP;
Fumihiro Murakami, Kuwana, JP;
NTN Corporation, Osaka, JP;
Abstract
It is desired to prevent generation of negative pressure in a bearing space and to prevent entry of foreign matter such as water into a bearing. The bearing includes an inner race (), an outer race (), rolling elements () disposed between raceways (and) of the inner and outer races and retained by a retainer (), and seal assemblies () provided at the respective ends of the outer race (). Each seal assembly () includes a seal case () fitted on one end of the outer race (), and an oil seal () mounted in the seal case. A check valve () is mounted in the seal case () and allows only a flow of gas from outside the bearing into the bearing space. A filter () is mounted in a flow passage in the check valve and allows passage of gas and prevents passage of liquid and solids.