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:
Apr. 21, 2015
Filed:
Jun. 08, 2010
Katsuaki Sasaki, Iwata, JP;
Shohei Fukama, Iwata, JP;
Takashi Kaneike, Osaka, JP;
Yasuhiko Kojima, Osaka, JP;
Katsuaki Sasaki, Iwata, JP;
Shohei Fukama, Iwata, JP;
Takashi Kaneike, Osaka, JP;
Yasuhiko Kojima, Osaka, JP;
NTN Corporation, Osaka, JP;
Nakanishi Metal Works Co., Ltd., Osaka, JP;
Abstract
To provide a rubber composition capable of sufficiently abrading a sealing lip while sliding it in an initial stage of rotation and sufficiently reducing a running torque, and further capable of securing a sufficient sealing property. The composition includes a first compounding ingredient which is one or more kinds selected from the group consisting of calcium carbonate, magnesium oxide, aluminum oxide and barium sulfate in an amount of 50 to 200 parts by mass based on 100 parts by mass of a rubber component, and a second compounding ingredient which is one or two kinds selected from the group consisting of carbon black and a silica in an amount of more than 0 parts by mass and 50 parts by mass or lower.