Patents by Inventor Hirotami Nakano

Hirotami Nakano 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).

  • Uninterruptible power supply apparatus and isolating method thereof
    Patent number: 5134307
    Abstract: A commercial alternating current power source is provided to a first frequency converting circuit (PC1) through a filter circuit (F) and a reactor (LAC). A high frequency switching power supply circuit (15) of the first frequency converting circuit is switched in response to the commercial alternating current power source to output high frequency power. The high frequency power is transferred to a second frequency converting circuit (PC2) through dielectric materials in capacitors (C1, C2) using electric field thereof as a transfer medium. In the second frequency converting circuit, a rectifying circuit (70) rectifies the high frequency power, so that a charging circuit 72) charges a back-up battery (BT) in response to a rectified output.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: July 28, 1992
    Inventor: Hirotami Nakano