Denso Corporation

Makita Electric Works, Ltd.

Hajime Ohta

Fusao Fushiya

Takashi Sato

Tsuyoshi Ueyama

Jiro Ebihara

Yutaka Inoue

Akiyasu Ito

Hiroyuki Terada

Kazuhisa Fukaya

Tomoyuki Hirota

A disc-type commutator is mounted on a rear end surface of an armature of an electrical rotating machine. Plural commutator segments are radially arranged around a rotating shaft, separated from one another by radially extending commutator gaps. A width of the commutator gap is gradually widened along a radial direction of the commutator, so that foreign particles, such as swarfs or brush dusts, entered in the commutator gap are removed by a centrifugal force generated in rotation of the armature. Further, the width of the commutator gap may be gradually widened along its depth direction so that the width becomes wider at its open end that at its closed end.

Disc-type commutator for electric rotating machine

A mobile robot placed on an automatic production line is provided. The mobile robot collects information on operating conditions of other mobile robots placed around it and flow of workpieces on the production line and determines action to be taken next based on the formation. A production system using such a mobile robot and a system inputting an operation program corresponding to a workstation into a mobile robot automatically are also provided. This enables measures to be taken quickly against a change in production, thereby providing a system which achieves high efficiency production.

Mobile robot, automated production system, and mobile robot system

Portable battery case

Cordless electric pruner

Growing community of inventors

Anjo, Japan

Hajime Ohta