Patents by Inventor Kazutoshi Ota

Kazutoshi Ota 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).

  • Patent number: 4047597
    Abstract: A guide device for guiding an elevator during its ascending and descending movement features a pair of guide rails disposed on opposite sides of the elevator body in parallel relation with the vertical line of movement of the elevator body and spaced apart to provide a gap between the sides of the elevator body and the guide rails, a plurality of guides carried by the elevator body and being interlocked with the guide rails on both sides of the elevator body to guide the vertical movement of the elevator body along the guide rails, and the guides being slidably disposed on the elevator body and spring biased in the direction of the guide rails so as to maintain the guides in interlocked relation with the guide rails in their normal state and to project the guide further in the corresponding direction of one of the guide rails when the elevator is shifted accidentally to one side to bend the other guide rail, upon collision therewith, and thus prevent derailment of the elevator from the guide rails.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: September 13, 1977
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaatsu Okura, Kazutoshi Ota, Sadayuki Otomi