Patents by Inventor Katsuyoshi Osawa

Katsuyoshi Osawa 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).

  • Resistor device for controlling a blower
    Patent number: 4935717
    Abstract: A blower control resistor device includes a plurality of resistors leading to resistor terminals, and a plurality of connecting terminals joined with the resistor terminals by thermal fuses. The joint portions between the resistor terminals and the connector terminals are concealed by a cover or the like so as to prevent an authorized modification of the resistor device. Preferably, one of the thermal fuses which is connected with a connector terminal near a power supply has a lower-melting point than other thermal fuses.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: June 19, 1990
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Katsuyoshi Osawa, Shinichi Ohi, Tadahiro Takahashi, Kazuo Noguchi, Kashiwa Kobayashi