Swcc Corporation

Alpha Corporation

Tsutomu Koizumi

Ryuichi Arai

Satoshi Kubota

Go Odachi

Yoshihiro Sakagami

Rikuya Watanabe

A method of manufacturing sheet material made of copper-silver alloy, the method comprising the steps of: (a) casting continuously copper-silver alloy so as to obtain base material having a thickness or diameter within a range of 6 to 30 mm; (b) rolling the base material at least once so as to obtain sheet material having a thickness within a range of 0.01 to 0.10 mm; and (c) annealing the sheet material, wherein the sheet material having undergone operation in the step (c) has a Vickers hardness of 280 HV or higher.

Method of manufacturing sheet material made of copper-silver alloy and method of manufaturing sheet for electrode of probe card

A conductive wire for electrical properties testing having high hardness and conductivity, which is composed of a copper alloy, and includes in its outer periphery portion a fibrous structure extending at an angle oftodegrees with respect to the length direction of the conductive wire.

Conductive wire for electrical properties testing and method for producing the same

A vehicle handle apparatus is provided with: a handle base fixed to a door of a vehicle; an operation handle rotatably connected to the handle base; and a relay lever which is rotatably connected to the handle base, and which is driven to rotate around a pivot by operating the operation handle. The relay lever is provided with: a sub-lever member including a connecting portion connected to an operating force transmitting member coupled to a door lock device in the door; and a main lever member which is driven to rotate by operating the operation handle. The sub-lever member and the main lever member are pivotally supported around the pivot so as to relatively rotate with respect to each other. The main lever member is connected with the sub-lever member by a connecting element when the connecting element is in a connecting position. The connecting element is withdrawn from said connecting position by inputting a predetermined acceleration, so that a connection of the main lever member with the sub-lever member is released.

Growing community of inventors

Kanagawa, Japan

Tsutomu Koizumi