Patents by Inventor Katuo Kato

Katuo Kato 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).

  • Impact damper
    Patent number: 4494634
    Abstract: Disclosed is an impact damper which is attached to an object of damping forming a main vibration system having a main natural frequency and serves as an additional vibration system. The natural frequency of the additional vibration system ranges from 60% to 80% of the main natural frequency, and the space between a weight of the additional vibration system and a stop attached to the main vibration system as measured when the object of damping is not vibrating ranges from 0% to 80% of the resonance amplitude of the object of damping.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: January 22, 1985
    Assignee: NHK Spring Co., Ltd.
    Inventor: Katuo Kato