Mitsubishi Denki Kabushiki Kaisha

Hiroshi Miyazaki

Satoru Akutsu

Yuji Nakahara

Youichi Fujita

Akira Hashimoto

Junji Kawada

Tadashi Hasegawa

Masaru Matsumoto

Yasunori Takai

Ken-ichi Azuma

Masahisa Kato

Kenichi Azuma

An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.

Rotary motor and production method thereof, and laminated core production method thereof

Rotary motor and production method thereof, and laminated core and production method thereof

Magnetic materials which are divided into a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.

Method of making a rotary motor

Rotary motor and production method thereof, and laminated core and

In a button-hole sewing machine where a piece of cloth is cut from a button hole before or after the sewing operation, a moveable knife cooperating with a stationary knife is driven through a mechanical linkage by an air drive unit and the operating pressure and speed of the moveable knife are changed by adjusting the device associated with the air drive unit.

Cloth cutting device in button-hole sewing machine

In a hole sewing machine of the type adapted to stitch a buttonhole or the like, an X-Y table member is operatively connected to a work support member upon which the material to be stitched is placed, motors are provided for driving the table along orthogonal X-Y axes and a further motor is provided for synchronously rotating the needle bar and looper stand of the sewing machine about the axis of the needle bar. A control device is provided for supply drive signals to the various motors in accordance with the predetermined buttonhole sewing program so that the buttonhole is stitched in accordance with the desired pattern by merely selecting a specific buttonhole sewing program.

Hole sewing machine

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Fukushima, Japan

Hiroshi Miyazaki