Nhk Spring Co., Ltd.

Nhk Morse Co., Ltd.

Nhk Co., Ltd.

Kazuhisa Matsumoto

Yoshiki Ono

Yohei Kameda

Tatsumi Uchida

Yoshikazu Hoshina

Azuma Sasabuchi

Rotor core plate for electric motor

Each of control boxes has an operation lever and an element moving together with the operation lever and a primary sensor for detecting the position of the moving element are arranged in each of the control boxes. A drive unit includes a motor, a movable rack driven by the motor and a secondary sensor for detecting the position of the moving rack. A control circuit serves to drive the motor to make any positional difference of the moving element and the movable rack zero. In a case where the position of the moving element does not coincide with that of the movable rack even after a predetermined time period goes by from when the rotation of the motor is started, current supply to the motor is temporarily stopped and then again started. When the control boxes are to be changed over from one to the other, this changeover is allowed only in a case where the control boxes which are to be changed over from one to the other and the drive unit are in neutral position. The drive unit includes a manual gear which can be toothed with the movable rack, and a handle for rotating the manual gear when something wrong happens to the electric system.

Engine control device

Growing community of inventors

Yokohama, Japan

Kazuhisa Matsumoto