Patents by Inventor Suguru Okazawa

Suguru Okazawa 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).

  • Electric compressor integral with drive circuit
    Patent number: 8303271
    Abstract: An electric compressor integral with a drive circuit incorporates a compression mechanism section, a motor for driving the compression mechanism section, and a motor drive circuit. A refrigerant gas chamber having a refrigerant gas expansion space, into which refrigerant gas is introduced, is formed between a drive circuit installation section and a motor installation section, by a first partition wall provided on the drive circuit side and a second partition wall provided on the motor side, the side opposite the drive circuit side. The refrigerant gas chamber is interrupted by the first partition wall against the drive circuit installation section and is communicated with the motor installation section by a through hole that is provided in the second partition wall and through which the refrigerant gas can pass.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: November 6, 2012
    Assignee: Sanden Corporation
    Inventors: Hideo Ikeda, Eiji Kobayashi, Kazumi Ohsato, Masanori Taguchi, Shigeyuki Koyama, Suguru Okazawa
  • ELECTRIC COMPRESSOR INTEGRAL WITH DRIVE CIRCUIT
    Publication number: 20100209266
    Abstract: An electric compressor integral with a drive circuit incorporates a compression mechanism section, a motor for driving the compression mechanism section, and a motor drive circuit. A refrigerant gas chamber having a refrigerant gas expansion space, into which refrigerant gas is introduced, is formed between a drive circuit installation section and a motor installation section, by a first partition wall provided on the drive circuit side and a second partition wall provided on the motor side, the side opposite the drive circuit side. The refrigerant gas chamber is interrupted by the first partition wall against the drive circuit installation section and is communicated with the motor installation section by a through hole that is provided in the second partition wall and through which the refrigerant gas can pass.
    Type: Application
    Filed: August 27, 2008
    Publication date: August 19, 2010
    Inventors: Hideo Ikeda, Eiji Kobayashi, Kazumi Ohsato, Masanori Taguchi, Shigeyuki Koyama, Suguru Okazawa
  • Hybrid compressor
    Patent number: 7278833
    Abstract: A hybrid compressor includes a first compression mechanism, which is driven by a first drive source, a second compression mechanism, which is driven by a second drive source, and a communication path communicating between a suction chamber of the first compression mechanism and a suction chamber of the second compression mechanism. The first compression mechanism may be adapted only to be driven by the first drive source and the second compression mechanism may be adapted only to be driven the second drive source. Therefore, the compression mechanisms are adapted to their respective drive sources.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: October 9, 2007
    Assignee: Sanden Corporation
    Inventors: Akiyoshi Higashiyama, Hideki Matsumura, Suguru Okazawa
  • Hybrid compressor
    Publication number: 20030152467
    Abstract: A hybrid compressor includes a first compression mechanism, which is driven by a first drive source, a second compression mechanism, which is driven by a second drive source, and a communication path communicating between a suction chamber of the first compression mechanism and a suction chamber of the second compression mechanism. The first compression mechanism may be adapted only to be driven by the first drive source and the second compression mechanism may be adapted only to be driven the second drive source. Therefore, the compression mechanisms are adapted to their respective drive sources.
    Type: Application
    Filed: February 3, 2003
    Publication date: August 14, 2003
    Inventors: Akiyoshi Higashiyama, Hideki Matsumura, Suguru Okazawa