Nippondenso Co., Ltd.

Masayuki Hiroshima

Masahiko Sakai

Masaru Yamada

According to the present invention, an oxygen concentration detector includes a housing, a detecting element inserted into said housing and a cover for covering a top portion of said detecting element. The detecting element is made of solid electrolyte and includes an atmospheric chamber therein. The cover includes an air vent portion for introducing air into said atmospheric chamber of the detecting element. The detecting element includes an air introducing path open to the atmospheric chamber at a side wall of the detecting element. It is possible to provide an oxygen concentration detector capable of introducing the air into the atmospheric chamber and maintaining an oxygen concentration in the atmospheric chamber at the same level as an atmosphere constantly.

Oxygen concentration detector

A winding apparatus for winding a coated wire on the drum for making a coil which is used for a stator or an alternator. A sectional shape of the wire which is introduced to the winding apparatus is circular, and the wire is deformed in order to make the sectional shape of the wire polygonal, so that the polygonal wire is fed to the bobbin in order to be wound on the bobbin. The resulting coil wound by the apparatus has an increased density.

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Anjo, Japan

Masayuki Hiroshima