Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Hitoshi Ota

Akira Hashimoto

Naoki Hashiguchi

Hisanori Uozumi

Naoki Kajita

Yuji Nakahara

Shinichiro Yoshida

Tadayoshi Kitayama

Takashi Kawabata

Shiro Yamauchi

Yoshinori Yokoyama

Kazuhiro Shono

Aritomo Uemura

Munehisa Takeda

Kazuhiko Inanaga

A brake structure of a traction machine includes a brake drum which is made rotatable about a shaft disposed on a rotary axis of the traction machine, and an electromagnetic brake unit built in an inner space of the brake drum. The electromagnetic brake unit includes a plurality of movable iron cores, a plurality of brake shoes located on the outside of the individual movable iron cores and joined thereto by connecting members, the brake shoes having curved outer surfaces facing a curved inner surface of the brake drum, and a one-piece formed stationary iron core block. The one-piece formed stationary iron core block has a plurality of stationary iron core portions joined to the individual movable iron cores via compression springs for forcing the individual brake shoes against the curved inner surface of the brake drum via the movable iron cores and the connecting members.

Brake structure of traction machine

A rotational machine includes a shaft, a rotary member rotatably mounted on the shaft with a bearing fitted between the shaft and the rotary member, an oil seal for sealing the bearing to prevent leakage of lubricant from inside the bearing through its axial end onto a surface of the rotary member, a brake which comes into sliding contact with a contact surface area formed on the surface of the rotary member for arresting rotation of the rotary member, a supporting member fixedly mounted on the shaft face to face with the rotary member forming a gap therebetween, the gap serving as a fluid path through which the lubricant which has leaked over the oil seal is allowed to flow, and an oil stop portion formed at a location in the gap between the oil seal and the contact surface area for impeding flow of the leaked lubricant.

Rotational machine

An optical switch includes a light emitter for emitting light and light receivers. A reflector is used for changing a path of light emitted from the light emitter. The reflector is held by a permanent magnet having first and second magnetic poles of opposite polarities. A supporting member is provided for the reflector and the first permanent magnet so that the reflector and the first permanent magnet can move between a first position and a second position. In the first position, the reflector and the first permanent magnet interact so the emitted light travels into one light receiver of the light receivers. On the other hand, in the second position, the reflector and the first permanent magnet interact so the emitted light travels into another of the light receivers. The switch further includes an electromagnet for generating first and second magnetic fields selectively for moving the reflector and the first permanent magnet between the first and second positions.

Optical switching apparatus for use in an optical communication system

An interfacial component detection apparatus has a plurality of electrodes spaced from one another on a first solid portion and a solid electrolytic layer on the first solid portion adjacent to an interfacial layer and covering the plurality of electrodes. An I/O device applies an electrical signal between the two electrodes and detects electrical signals from the electrodes. Components of the interfacial layer can be accurately and reliably detected by electrolysis and impedance measurements.

Interfacial component detection apparatus

Growing community of inventors

Tokyo, Japan

Hitoshi Ota