Patents by Inventor Toshibumi Yamaguchi

Toshibumi Yamaguchi 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).

  • Automatic vending machine with ice preparation
    Patent number: 4417671
    Abstract: An automatic vending machine having a control circuit for controlling the quantity of ice in an ice storage chamber. A signal generating circuit is provided for producing digital signals in response to ice being supplied to, and discharged from, the ice storage chamber. A counting circuit comprising an up-down counter receives the digital signals and adjusts a count value which represents the quantity of ice in the storage chamber. The counter produces an output signal when sufficient ice is available to supply vending needs, but not when the ice quantity falls below a predetermined value. The vending operation is suspended when the counter output signal is not produced.
    Type: Grant
    Filed: October 15, 1981
    Date of Patent: November 29, 1983
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Kikuo Kawasaki, Kazuo Yoshida, Nobuo Nonoyama, Toshibumi Yamaguchi, Toshio Hasegawa, Jitsuo Okamura