Patents by Inventor Mitsugi Akita

Mitsugi Akita 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).

  • Acoustic device for a head protector
    Patent number: 4424880
    Abstract: An acoustic device which includes a sound generating element for generating sounds, a case member having an inner chamber for containing the sound generating element therein, and a sound conducting member extending from the case member for conducting the sounds generated in the inner chamber. In order to removably attach the acoustic device to a helmet, the acoustic device is provided with a holding member for holding the case member on the helmet. The sound conducting member is formed to extend from the case member to a location substantially corresponding to an ear of a wearer of the helmet.
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: January 10, 1984
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Masato Murayama, Mitsugi Akita