Patents by Inventor Takeo Hayakawa

Takeo Hayakawa 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).

  • Patent number: 5173819
    Abstract: An electronic apparatus, such as a disk apparatus, has a plurality of electronic units such as magnetic head-disk units and at least one power source unit for supplying power to the electronic units. The arrangement of the electronic apparatus is such that, on a frame of the apparatus, the plurality of electronic units are vertically arranged in such a manner as to form a first arrangement system, while the at least one power source unit is arranged in such a manner as to form a second arrangement system above the first arrangement system. The apparatus has an air flow passage for causing cooling air to flow from a lower portion of the electronic apparatus to the inside thereof, pass through the first arrangement system, thereby pass through the second arrangement system, and then be discharged to the outside of the apparatus.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: December 22, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Tsuyoshi Takahashi, Kazuo Nakagoshi, Jun Naruse, Takuji Ogawa, Takeo Hayakawa
  • Patent number: D335285
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: May 4, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Toshiyuki Utsuki, Syoji Umemoto, Tatsuo Murai, Naoyuki Fukada, Takeo Hayakawa, Kazuo Nakagoshi