Kabushiki Kaisha Sankyo Seiki Seisakusho

Masataka Kurata

Izumi Komatsu

Isao Ushikoshi

Shunji Matsushima

Kiyohiko Ushiyama

Hidenao Ichimura

A rotary cylinder device has a stationary cylinder with a stationary shaft; a rotary cylinder rotatably mounted on the stationary shaft, the rotary cylinder having an opening on one side thereof which is opposite to the other side where the rotary cylinder confronts with the stationary cylinder; a signal recording and reproducing magnetic head provided on the periphery of the rotary cylinder; an electric motor including: a rotor member of the electric motor, which is provided in the opening of the rotary cylinder and secured to the rotary cylinder; a stator member of the electric motor, which is confronted with the rotor member; and a first magnetic shielding member arranged to cover the opening of the rotary cylinder.

Rotary head drum with shielding of heads and rotary transformers

Disclosed is a dc motor comprising a motor frame; a flexible magnet fixed on the motor frame; a rotor having a rotor core, the rotor core having windings and confronting the flexible magnet; a rotating shaft for rotating integrally with the rotor; a commutator secured to the rotating shaft; a brush body coming in slidable contact with the commutator and supplying power to control driving of the rotor; a brush body holder, made of an insulating resin, for holding the brush body; and an engaging device for engaging the brush body with the flexible magnet.

Growing community of inventors

Nagano, Japan

Masataka Kurata