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:
Aug. 11, 2009
Filed:
Sep. 29, 2004
Tomohito Ota, Yokohama, JP;
Tomihito Hashimoto, Tokyo, JP;
Yasuaki Yamamoto, Tokyo, JP;
Hiroo Kusano, Tokyo, JP;
Tomohito Ota, Yokohama, JP;
Tomihito Hashimoto, Tokyo, JP;
Yasuaki Yamamoto, Tokyo, JP;
Hiroo Kusano, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A seal ring () of the present invention seals operating oil hermetically and is attached to an annular seal ring groove () provided on an outer circumference of a shaft member (). The seal ring () includes fluororesin, modified fluororesin formed by being irradiated with an ionizing radiation in a range from 1 kGy to 10 MGy inclusive in a state of being heated up to a melting point thereof or higher under an inert gas atmosphere with an oxygen partial pressure of 1.33 kPa or less, and synthetic resin having a surface energy ranging from +0 N/cm to 20˜10−5 N/cm inclusive of that of the operating oil.