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:
Oct. 17, 2000
Filed:
Nov. 06, 1998
Yoshinao Okawa, Ibaraki, JP;
Yoshihiro Murano, Chiba, JP;
Isao Ito, Ibaraki, JP;
Kenichi Okada, Chiba, JP;
Kazuo Funabashi, Ibaraki, JP;
Masanori Miyamoto, Ibaraki, JP;
Kiyohito Mizuide, Chiba, JP;
Yasuhiko Onishi, Mie, JP;
Masaaki Hoko, Mie, JP;
Hirotugu Kinoshita, Yokohama, JP;
Fumihiro Itano, Yokohama, JP;
Makoto Noda, Yokohama, JP;
Takeshi Uesugi, Tokyo, JP;
Kiyoshi Nagasawa, Aichi, JP;
Shuzo Tanigaki, Tokyo, JP;
Yoshiyuki Ema, Saitama, JP;
Abstract
The invention relates to a rotating electric machine including a coil of a wire having thereon an insulating coating comprising a polybenzimidazole. This rotating electric machine is stably maintained for a long time in dielectric strength even under a highly radioactive environment, due to the use of the special insulating coating. With this, the rotating electric machine can be driven stably for a long time. The invention further relates to another rotating electric machine including (a) a rotor having a rotating shaft; (b) a bearing for supporting the rotating shaft; and (c) a grease applied to the bearing. This grease contains (1) a polyphenyl ether having at least three aromatic rings in the molecule and (2) a urea. The rotor of this rotating electric machine is stably supported in the bearing for a long time even under a highly radioactive environment, due to the use of the special grease. Thus, this rotating electric machine can also be rotated stably for a long time.