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:
Jun. 28, 2022
Filed:
Mar. 09, 2020
Uchiyama Manufacturing Corp., Okayama, JP;
Keiko Ikeda, Okayama, JP;
Yoshihiko Yamaguchi, Okayama, JP;
Tomohisa Yamamoto, Okayama, JP;
Tatsuo Katayama, Akaiwa, JP;
UCHIYAMA MANUFACTURING CORP., Okayama, JP;
Abstract
There is provided a seal member for a bearing comprising a molded rubber article and a core metal, wherein the molded rubber article is produced by vulcanization-molding a rubber composition comprising 100 parts by mass of a rubber (A) containing an acrylic acid ester as a main component, 1 to 30 parts by mass of a carbon material (B), and 10 to 100 parts by mass of a carbon black (C) having a DBP oil absorption of 20 mL/100 g or more and less than 150 mL/100 g; the carbon material (B) is a carbon nanotube (B1) or a carbon black (B) having a DBP oil absorption of 150 mL/100 g or more and 1000 mL/100 g or less; and a volume resistivity of the molded rubber article is 1×10Ω·cm or less.