Sumitomo Wiring Systems, Limited

Kabushiki Kaisha Meidensha

Kandenko Co., Ltd.

Yoshiyuki Ema

Kenichi Okada

Hirotugu Kinoshita

Yasuhiko Onishi

Makoto Noda

Shuzo Tanigaki

Fumihiro Itano

Yoshinao Okawa

Yoshihiro Murano

Isao Ito

Kiyohito Mizuide

Takeshi Uesugi

Masanori Miyamoto

Kazuo Funabashi

Masaaki Hoko

Kiyoshi Nagasawa

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.

Rotating electric machine usable in radioactive environment

Growing community of inventors

Saitama, Japan

Yoshiyuki Ema