Hitachi, Ltd.

Other

Sumitomo Metal Industries, Inc.

Hitachi Engineering Services Co., Ltd.

Takashi Kadowaki

Ayumu Morita

Tooru Tanimizu

Yasuaki Suzuki

Masato Yabu

Yozo Shibata

Ichiya Sato

Hisao Yamaguchi

Susumu Itoh

Soji Sasaki

Kazuo Fujisawa

An electromagnet a coil, a movable iron core adapted to move on the center axis of the coil, and a stationary iron core provided so as to cover the upper and lower surfaces and the outer peripheral surface of the coil. A permanent magnet is arranged in a gap surrounded by the movable iron core and the stationary core.

Electromagnet and actuating mechanism for switch device, using thereof

An electromagnet includes a coil, a movable iron core adapted to move on the center axis of the coil, and a stationary iron core provided so as to cover the upper and lower surfaces and the outer peripheral surface of the coil. A permanent magnet is arranged in a gap surrounded by the movable iron core and the stationary core.

An electromagnetic-acoustic measuring apparatus is disclosed in which an exciting coil is wound around a body to be inspected in order to generate a magnetic field within the body in the direction parallel to a surface of the body, a transmitting coil is used to generate mechanical strain in the surface of the body by utilizing the magnetic field, a receiving coil detects the mechanical strain at the surface of the body after the mechanical strain has been propagated in the body, the exciting coil is enclosed with a separable core, the transmitting and receiving coils are supported by respective head portions of pole pieces fixed to the core, and the transmitting and receiving coils and pole pieces are water-cooled by means of cooling pipes.

Electromagnetic-acoustic measuring apparatus

Growing community of inventors

Yonago, Japan

Takashi Kadowaki