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:
Dec. 24, 2013
Filed:
Dec. 28, 2009
Toru Noguchi, Kamizawa-machi, JP;
Hiroyuki Ueki, Ueda, JP;
Shigeki Inukai, Ueda, JP;
Masaei Ito, Sagamihara, JP;
Raghu Madhavan, Rosharon, TX (US);
Morinobu Endo, Suzaka, JP;
Satoshi Iinou, Nagano, JP;
Toru Noguchi, Kamizawa-machi, JP;
Hiroyuki Ueki, Ueda, JP;
Shigeki Inukai, Ueda, JP;
Masaei Ito, Sagamihara, JP;
Raghu Madhavan, Rosharon, TX (US);
Morinobu Endo, Suzaka, JP;
Satoshi Iinou, Nagano, JP;
Nissin Kogyo Co., Ltd., Ueda, JP;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Shinshu University, Matsumoto, JP;
Abstract
A seal member includes a hydrogenated acrylonitrile-butadiene rubber (HNBR) and carbon nanofibers. The seal member has a number of cycles to fracture of 7000 or more when subjected to a tensile fatigue test at a temperature of 70° C., a maximum tensile stress of 4 N/mm, and a frequency of 1 Hz. The seal member exhibits excellent abrasion resistance.