Kabushiki Kaisha Toshiba

Takahiko Shindo

Yoshiyasu Itoh

Katsumi Suzuki

Hironori Suzuki

Tsuneji Kameda

Yoshiyasu Ito

Yuuji Hisazato

Masahiro Hanai

Nobuyuki Shimizu

Yoshihiko Hirano

Hideyasu Andoh

Yasuhiko Taniguchi

Hiroyoshi Narita

Takeshi Udagawa

Masahiro Kan

Keisuke Shimagami

Yoshihiro Ishizaki

Masahiko Ebina

The present invention is to provide an anisotropic porous material for a fluid filter which can perform a separation process of a large amount of fluid with high accuracy, which can achieve high flux, and which can improve detergent properties. The anisotropic porous material includes a plurality of pores. Each of the pores has an anisotropic shape in which a major axis and a minor axis can be defined. An arrangement of the pores has an orientation.

Anisotropic porous material

A friction welded joint structure includes friction welded dissimilar first and second metallic materials. The first metallic material has a rigidity greater than the second metallic material. The angle of the first metallic material to a free edge of the first metallic material, at an end portion of a joined surface between the first and second metallic materials, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees. A reaction layer between the first and second metallic materials is more than zero and less than or equal to 20 &mgr;m. The first metallic material is copper. The second, which has the smaller rigidity, is aluminum.

Joined structure of dissimilar metallic materials

A voltage non-linear resistor unit is composed of at least one of voltage non-linear resistors which is composed of a columnar sintered body formed by molding and sintering a raw material, the sintered body having both end surfaces having a surface roughness in term of arithmetic average surface roughness Ra of 1 to 2 &mgr;m and being formed with an electrode film layer, a terminal metal fitting formed in a predetermined shape and attached to the voltage non-linear resistor, and a soldering material arranged between the voltage non-linear resistors and between joint surfaces of the voltage non-linear resistor and the terminal metal fitting, the joint surfaces being joined by heating the soldering material and applying a load vertically to the joint surfaces while giving a rotation motion thereto. Such voltage non-linear resistor is effectively assembled into an arrester.

Voltage non-linear resistor unit and arrester unit

Growing community of inventors

Yokohama, Japan

Takahiko Shindo