Patents by Inventor Takei Ando

Takei Ando 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).

  • Elevator system
    Patent number: 5389749
    Abstract: An elevator system which is provided with power converters, electric motors supplied with power from the power converters, and a torque distributing section having functions for determining allocation of output power from the power converters on the basis of a required torque, by which an elevator is operated on the basis of functions selected in accordance with the operation mode. The system is able to save power in the elevator operation and also improve control functions and increase system capacity.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: February 14, 1995
    Assignees: Hitachi, Ltd., Hitachi Building Systems Engineering And Service Co., Ltd.
    Inventors: Sadao Hokari, Kiyoshi Nakamura, Hiromi Inaba, Yoshio Sakai, Hideaki Takahashi, Seikichi Masuda, Takei Ando, Toshiaki Kurosawa, Akihiro Nokita, Masahiro Konya