Kabushiki Kaisha Toshiba

Misuzu Sakai

Takayuki Masunaga

Katsumi Hisano

Takahiro Terada

Toshiyuki Uchii

Shanying Pan

Takanori Iijima

Tomoyuki Yoshino

Kaori Deura

Kosuke Adachi

Toshihiko Kida

Hiroki Tashiro

Makoto Ootaki

According to an embodiment, a gas-blast circuit breaker comprises a heat removal unit in a flow path of arc extinguishing gas. The heat removal unit each includes: plate-shaped heat removal members contacting the arc extinguishing gas flowing in the flow path; and a holding portion holding the plate-shaped heat removal members to stack the heat removal members at intervals in a thickness direction. Each of the heat removal members includes: an upstream side end portion; a downstream side end portion; and a thickest portion with a largest thickness which is provided between the upstream side end portion and the downstream side end portion. Thickness of the heat removal member continuously changes between the upstream side end portion and the downstream side end portion via the thickest portion.

Gas-blast circuit breaker

According to an embodiment, a bush includes a first member, a second member, and a third member. The first member is provided with a first hole having a first axis, and has a first outer surface having a second axis different from the first axis. The second member is provided with a second hole in which the first member is housed, and has a second inner surface that is in contact with the first outer surface and a second outer surface having a third axis different from the second axis. The third member is provided with a third hole in which the second member is housed and has a third inner surface that is in contact with the second outer surface.

Bush, rotary machine, and air conditioning apparatus

Growing community of inventors

Kanagawa, Japan

Misuzu Sakai