Patents by Inventor Hiroshi Tajimi

Hiroshi Tajimi 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).

  • Earthquake isolating and vibration absorbing equipment for structures
    Patent number: 3940895
    Abstract: An earthquake isolating and vibration absorbing equipment for structures is provided with a hanger secured to one of a floor including a ground and a supported member of a structure installed on the floor, a lever, one end of which is swingably mounted on the hanger, a weight member mounted on the other end of the lever, a holder secured to the other one of the floor and supported member, and arms for connecting one end of the lever to the free end portion of the holder. The structure provided with the equipment is less influenced by an earthquake or vibrations under the action of the lever on which there is mounted the weight member having a weight far lighter than that of the structure.
    Type: Grant
    Filed: August 9, 1974
    Date of Patent: March 2, 1976
    Assignee: Chiyoda Chemical Engineering & Construction Co. Ltd.
    Inventors: Shizuo Yamamoto, Yuichi Nagai, Nobuyuki Shimizu, Hiroshi Tajimi