Patents by Inventor Hideo Yazawa

Hideo Yazawa 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).

  • Cooling apparatus for electronic unit
    Patent number: 6711017
    Abstract: Provided is a cooling apparatus for feeding liquid coolant to electronic elements as heat generating elements in an electronic system through a cooling pipe. The cooling pipe is in part flattened so as to form flattened portion which is made into contact with the electronic parts for cooling the latter. With this arrangement, the pipe line working is simplified while the number of joint parts in the pipe line is decreased so as to prevent leakage of the liquid coolant. Further, the heat-exchange capacity of a heat-exchanger unit is controlled in accordance with an atmospheric temperature, a temperature in the electronic system and a temperature of the liquid coolant in order to aim at preventing occurrence of freezing or dewing while enhancing the operating efficiency. Further, in an electronic apparatus having two electronic systems, a liquid coolant tank is commonly used for two electronic systems in order to prevent occurrence of dewing or freezing in a cooling system for the electronic system on resting.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: March 23, 2004
    Assignees: Hitachi Kokusai Electric Inc., Hitachi, Ltd.
    Inventors: Tateki Kurokawa, Akira Saito, Toshio Fukukawa, Mikio Harada, Takahiro Daikoku, Hideo Yazawa
  • Cooling apparatus for electronic unit
    Publication number: 20030016498
    Abstract: Provided is a cooling apparatus for feeding liquid coolant to electronic elements as heat generating elements in an electronic system through a cooling pipe. The cooling pipe is in part flattened so as to form flattened portion which is made into contact with the electronic parts for cooling the latter. With this arrangement, the pipe line working is simplified while the number of joint parts in the pipe line is decreased so as to prevent leakage of the liquid coolant. Further, the heat-exchange capacity of a heat-exchanger unit is controlled in accordance with an atmospheric temperature, a temperature in the electronic system and a temperature of the liquid coolant in order to aim at preventing occurrence of freezing or dewing while enhancing the operating efficiency. Further, in an electronic apparatus having two electronic systems, a liquid coolant tank is commonly used for two electronic systems in order to prevent occurrence of dewing or freezing in a cooling system for the electronic system on resting.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 23, 2003
    Inventors: Tateki Kurokawa, Akira Saito, Toshio Fukukawa, Mikio Harada, Takahiro Daikoku, Hideo Yazawa