Patents by Inventor Toshihiko Nakashima

Toshihiko Nakashima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control system for a motor having a shunt field winding
    Patent number: 4114076
    Abstract: Control system for a motor having a shunt field winding is disclosed. In an electric vehicle, when an accelerator pedal is stepped on at the start, a field current is increased to increase the rotational speed of the motor in accordance with the stepped angle of the pedal. In the operating region where the rotational speed of the motor is not increased in accordance with the increase of the field current, an armature current is in turn increased and inversely the field current is decreased in order to further increase its rotational speed. Thus, an impact at the start can be reduced.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: September 12, 1978
    Assignee: Nippondenso Co., Ltd.
    Inventors: Takanori Teranishi, Toshihiko Nakashima