US 5,481,149 AGranted

Homopolar dynamoelectric machine

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsYoshitaka Kambe, Tamio Shinozawa

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Abstract

A homopolar dynamoelectric machine comprises a solenoid coil for generating a magnetic field, having a cavity formed around an axis thereof. A rotating shaft, which constitutes a rotor, is rotatably provided in the cavity about the axis. A circular plate, which also constitutes the rotor, is integrally fixed on the shaft. A rotating body is rotatably supported by the plate about an axis of the shaft. A first electric current path, through which an electric current can pass from a proximal portion to a distal portion of the rotor, is integrally provided in, for example, the plate. A second electric current path, through which an electric current can pass from a distal portion to a proximal portion of the rotor, is integrally provided in the rotating body. The first and second paths are electrically connected in series, and are adapted to be electrically connected to a power supply in order to supply a direct current to these paths.

Claims20

Dependent claims

A homopolar dynamoelectric machine comprising:

a solenoid coil for excitation, a cylindrical cavity formed around an axis thereof;
a rotor, provided in the cavity, rotatable about the axis of the coil, having a proximal portion and a distal portion;
a rotating body, rotatably supported by the rotor about an axis of the rotor, the rotatable body extending from the proximal portion to the distal portion of the rotor;
a first electric current path extending from the proximal portion to the distal portion of the rotor, through which an electric current passes from the proximal portion to the distal portion of the rotor;
and
a second electric current path extending from the distal portion to the proximal portion of the rotor, through which an electric current passes from the distal portion to the proximal portion of the rotor, the second electric current path being electrically connected in series with the first electric current path, and the first and second electric current paths being adapted to be electrically connected to a power supply in order to supply a direct current to the first and second electric current paths;
wherein the rotor comprises one of the first and second electric current paths, and the rotating body comprises the other of the first and second electric current paths.

4 more elements

Dependencies are inferred from the claim text.