Toyota Jidosha Kabushiki Kaisha

Hiroshima University

Osg Corporation

Shinshu University

Hayashi Precision Co. Ltd

Masahiko Higuchi

Yasuo Kinoshita

Yoshihiro Umebayashi

Katsuhiko Higuchi

A current amplifying element that operates at a higher speed than conventional semiconductor devices is provided. An input current flows through an input current pathin a direction X, and a magnetic field generated from a magnetis applied in a direction Z which is perpendicular to the direction X. An output current pathis formed under the input current pathwith an insulatorinterposed therebetween. Since the direction in which an output current flows is perpendicular to both the input current and the magnetic field, the current is amplified by the galvanomagnetic effects produced by the input current and the magnetic field.

Current amplifying element and current amplification method

There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling die starts, and after that, the formation of a spline having a small number of teeth by rolling starts by use of a spline rolling die while continuing the formation of the worm. Accordingly, a rolled material can be rolled forcibly by a driving source from the worm rolled using the thread rolling die. As a result, the spline having a small number of teeth whose number is thirteen or less can be formed by rolling onto the rolled material at the same time as the formation of the worm.

Rolling die and method for forming thread or worm and spline having small number of teeth by rolling simultaneously

Growing community of inventors

Nagano, Japan

Masahiko Higuchi