Patents by Inventor Takeo Ootsu

Takeo Ootsu 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).

  • Microphone characteristic adjustment device
    Patent number: 6700986
    Abstract: An acoustic mechanism is provided for a microphone, by which the transmission sensitivity-vs.-frequency characteristic of the microphone can be adjusted by an easy operation. Good communication quality can be thereby invariably secured for radio communications, and a preferred communication sound can also be obtained. Elongated openings 16a and 16b that are long in a periphery direction are formed in the peripheral wall portion of a housing 11 of a microphone main unit 1. Hollow cylindrical packing 2 made of rubber, in which elongated openings 21a and 21b are formed at locations corresponding to the positions of the elongated openings 16a and 16b in the housing 11, is fitted over the housing 11 for securing. A hollow, cylindrical adjustment ring 3 where slits 32a and 32b are formed at locations corresponding to the positions of the elongated openings 21a and 21b is fitted over the periphery of the packing 2.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: March 2, 2004
    Assignee: Vertex Standard Co., Ltd.
    Inventors: Takeo Ootsu, Takeaki Oohira
  • Microphone characteristic adjustment device
    Publication number: 20020168077
    Abstract: An acoustic mechanism is provided for a microphone, by which the transmission sensitivity-vs.-frequency characteristic of the microphone can be adjusted by an easy operation. Good communication quality can be thereby invariably secured for radio communications, and a preferred communication sound can also be obtained.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 14, 2002
    Applicant: VERTEX STANDARD CO., LTD.
    Inventors: Takeo Ootsu, Takeaki Oohira