Patents by Inventor Kazuhiro Shiode

Kazuhiro Shiode 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).

  • Power supply for ac elevator
    Patent number: 6732838
    Abstract: An a.c. elevator of the invention has a commercial power source (1), an inverter (3) operable with the power from the commercial power source (1) for generating a.c. power, and an electric motor to be driven with the a.c. power generated by the inverter (3). A power source device includes a rechargeable battery (E), a power source circuit (10) for charging and discharging the battery (E), and a control circuit (9) for controlling the voltage to be input to the inverter (3) by controlling the operation of the power source circuit (10). The battery (E) is charged with regenerative power from the motor, the power generated by the battery (E) is supplied to the inverter (3).
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: May 11, 2004
    Assignee: Fujitec Co., Ltd.
    Inventors: Takao Okada, Yoshitomo Yoshino, Kazuhiro Shiode, Kazunori Hasegawa, Shinichi Murakami, Shigeru Nagashima