Patents by Inventor Yuzo Sawada

Yuzo Sawada 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).

  • Trailer refrigeration system
    Patent number: 7878013
    Abstract: A trailer refrigeration system comprising: an electricity generator (22); an electricity-generator engine (21) for driving the electricity generator (22); a converter (23) for converting ac electric power generated by the electricity generator (22) into dc electric power; an inverter (24, 25, 26) including inverters (24), (25), (26) each for converting dc electric power from the converter (23) into ac electric power; a refrigerant circuit (30) having an electric compressor (31) and a fan (35, 36) including fans (35), (36), the electric compressor (31), the fan (35), and the fan (36) being driven respectively by ac electric power from inverters (24), (25), (26); and a control means (40) for individually controlling the speed of rotation of the electric compressor (31), the fan (35), and the fan (36).
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 1, 2011
    Assignee: Dalkin Industries, Ltd.
    Inventors: Sumikazu Matsuno, Tetsuo Nakata, Yuzo Sawada, Fumiaki Yakushiji, Yukio Nishihama, Keisuke Kudou, Yasutoshi Mizutani
  • Trailer Refrigeration System
    Publication number: 20090133419
    Abstract: A trailer refrigeration system comprising: an electricity generator (22); an electricity-generator engine (21) for driving the electricity generator (22); a converter (23) for converting ac electric power generated by the electricity generator (22) into dc electric power; an inverter (24, 25, 26) including inverters (24), (25), (26) each for converting dc electric power from the converter (23) into ac electric power; a refrigerant circuit (30) having an electric compressor (31) and a fan (35, 36) including fans (35), (36), the electric compressor (31), the fan (35), and the fan (36) being driven respectively by ac electric power from inverters (24), (25), (26); and a control means (40) for individually controlling the speed of rotation of the electric compressor (31), the fan (35), and the fan (36).
    Type: Application
    Filed: October 16, 2006
    Publication date: May 28, 2009
    Inventors: Sumikazu Matsuno, Tetsuo Nakata, Yuzo Sawada, Fumiaki Yakushiji, Yukio Nishihama, Keisuke Kudou, Yasutoshi Mizutani