Hitachi, Ltd.

Hitachi Naka Electronics Co., Ltd.

Toshio Ishizuki

Sueo Kawai

Tadasi Sonobe

Saburo Usami

Toshio Hattori

Fumio Suzuki

Hiroshi Aoyama

Yumiko Seki

Shigeru Sakamoto

Tosuke Hirata

Yoshio Fukuda

Ken-ichi Honda

A superconducting magnet includes a superconducting coil, an inner tank for containing the coil, a shield plate for covering the inner tank, and an outer tank for accommodating the superconducting coil, the inner tank and the shield plate. The inner tank is supported on the outer tank by a load support member and the outer tank forms a vacuum vessel. At least one of the inner tank, the load support member, the shield plate and the outer tank includes a detection arrangement for detecting abnormality and/or deterioration of the inner tank, load support member, shield plate and outer tank associated with the respective detection arrangement.

Superconducting magnet magnetically levitated transportation apparatus

The present invention is an electric capacitance strain gauge provided with a pair of installing frames connected to each other, electrical insulating members with a stepped shape fixed onto the said pair of installing frames by insertion and two pairs of electrode plates with a stepped shape fixed onto the said electrical insulating members by insertion. As the electrical insulating members and the installing frames are positioned at a stepped part of the stepped shape when the electrical insulating members are fixed on the installing frames by insertion, and positioning of the electrode plates and the electrical insulating members is carried out at a stepped part of the electrode plates when the electrode plates are installed on the electrical insulating members by insertion, the relative positions of each member can be accurately determined. As the relative positions of each member of the electric capacitance strain gauge is accurately determined, the possibility that characteristics of the electric capacitance strain gauge are affected by each electric capacitance strain gauge is reduced.

Electric capacitance strain gauge

Growing community of inventors

Hitachi, Japan

Toshio Ishizuki