Aichi Steel Corporation

Aichi Steel Works, Ltd.

Aki Watarai

Yoshinobu Honkura

Kazuo Arai

Yasuhiro Takeuchi

Hideki Fujii

Yoshinobu Tanaka

Yoshiro Iwama

Atsushi Narita

Kako Eiji

An electric motor for reducing eddy current loss including an armature; a field element or permanent magnet as a magnetic source; and a shaft rotating together with the armature or field element. The permanent includes magnet particles bound together by a binder resin, and has a degree of electric resistance anisotropy (&#x3c1;1/&#x3c1;2) of 2 or more. The first electric resistivity (&#x3c1;1) is measured in an axial direction and a second electric resistivity (&#x3c1;2) is measured in a direction perpendicular to the axial direction. The bonded magnet is, for example, a compression-molded bonded magnet that contains 93% to 98.5% of the magnet particles, and the first electric resistivity is 300 &#x3bc;&#x3a9;m or more. When the compression-molded bonded magnet whose compression direction is arranged along the axial direction is used as a field source, the eddy current loss occurring in the compression-molded bonded magnet can be efficiently reduced.

Electric motor and field element

The aim of the present invention is to offer a keeper for a dental magnetic attachment that is strong, has low manufacturing costs, and is not easily detached from the tooth root. The keeper proposed herein has a keeper body, which is shaped like a plate, and a root, which is attached to the bottom of the keeper body. The keeper body and the root are machined from a single piece of soft magnetic material in one piece. The root has a smaller diameter part that is linked to a larger diameter part whose external diameter is larger than an external diameter of the smaller diameter part. The smaller diameter part is linked to the bottom of the keeper. There are multiple circumferential grooves around the outer side of the larger diameter part.

Keeper for a dental magnetic attachment

A magnetic apparatus for detecting a position of a vehicle, capable of detecting a lateral deviating distance of a vehicle over a lateral deviation width with a high accuracy and at a high speed, wherein a magnetic field component in the direction of advance of the vehicle is detected; or more preferably a three dimensional magnetic sensor (1), which comprises a magnetic sensor element for the direction of advance of the vehicle, and magnetic sensor elements for two directions crossing the first-mentioned direction and provided additionally, is used, whereby it becomes possible to heighten a center retaining capability of the vehicle, widen a lateral deviating distance detecting range around four times from around 25 cm to around 1 m, and detect a magnetic marker (3) reliably even when disturbance magnetic field exerts influence upon this detection operation to thereby start center side guidance reliably.

Magnetic apparatus for detecting position of vehicle

Denture attachment

Growing community of inventors

Tokai, Japan

Aki Watarai