Patents by Inventor Minoru Takaoka

Minoru Takaoka 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).

  • Apparatus and method for controlling rotation frequency of infinite variable-speed drive
    Patent number: 5780984
    Abstract: The invention provides an apparatus and a method for controlling the rotation frequency of an infinite variable-speed drive in which, when an error is caused in an output rotation frequency of the infinite variable-speed drive during a processing time period, a target rotation frequency is calculated in view of the error, so as to control the rotation frequency in the remaining processing time period in accordance with the calculated target rotation frequency. The target rotation frequency is calculated on the basis of the remaining processing time period and a pulse number to be counted in the remaining processing time period.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: July 14, 1998
    Assignee: Tsubakimoto Chain Co.
    Inventors: Michio Miyako, Minoru Takaoka, Hiroyuki Tanaka