Patents by Inventor Yuki Takatsu

Yuki Takatsu 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).

  • Apparatus for controlling an air conditioner
    Patent number: 6053002
    Abstract: There is provided a controlling apparatus for an air conditioner, which comprises: an inverter circuit for feeding as an output a pseudo-sine wave from a switching signal obtained by comparison between a modulated wave and a carrier wave; a refrigeration cycle device which has a compressor driven by the pseudo-sine wave from the inverter circuit so that the modulated wave is adjusted according to a load of an air conditioner; and a correction device for correcting an amplitude of the modulated wave into a smaller one at a predetermined time when a rated voltage of the power source from the inverter circuit is larger than a rated voltage by a first predetermined value, and correcting the modulated wave into a larger one at a predetermined time when a rated voltage of the power source from the inverter circuit is smaller than the rated voltage by a second predetermined value.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 25, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Satoshi Matsumoto, Kouichi Matsumoto, Tomonori Isobe, Hiroshi Yoshida, Manabu Ishihara, Yuki Takatsu, Eiji Kawabe