Patents by Inventor Kazuyoski Kuwahara

Kazuyoski Kuwahara 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 apparatus for air conditioning unit
    Patent number: 4142375
    Abstract: An automatic control apparatus for protecting the compressor motor used with the refrigeration system of an air conditioning unit. The control apparatus has a timer for prohibiting the restart of the compressor motor until the lapse of a predetermined time after temporary stoppage of the compressor motor, and a holding circuit for holding a power source voltage for a predetermined period of time while the operation of the air conditioning unit is stopped. Even if the power supply is turned off, therefore, the source voltage supplied by the holding circuit enables the timer circuit to continue its operation for a predetermined length of time.
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: March 6, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Yuuhei Abe, Katsuo Mohri, Nobuo Azuma, Kazuyoski Kuwahara, Yuhiko Yabe, Yasunori Tominaga