Patents by Inventor Hisanobu Ohyama

Hisanobu Ohyama 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).

  • Method of protecting rotating machine
    Patent number: 5160876
    Abstract: A rotating machine including a rotating body connected to and driven by a drive unit via a drive shaft is protected by stopping rotation of the rotating body and drive shaft in response to a detected vibration amplitude exceeding a predetermined allowable value at two spaced time instants.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: November 3, 1992
    Inventors: Yoshitaka Niinai, Norihisa Sagawa, Yasuhiro Kawai, Sadato Igarashi, Hisanobu Ohyama