Patents by Inventor Toshiaki Kanaoka

Toshiaki Kanaoka 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).

  • Combination thermal and mechanical safety switch for microwave heating oven
    Patent number: 4663508
    Abstract: In a microwave heating oven, a safety switch 301 is disposed in an external position relative to a heating chamber 100. A displacement rod 302, which is made of polyprophylene or the like low dielectric constant plastic substance, is disposed through and across the heating chamber 100. Displacement rod 302 serves as a thermal switch, so that at an abnormally high temperature displacement rod 302 melts down, thereby opening the safety switch 301 and disengaging the microwave generator.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: May 5, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yohzoh Ishimura, Okihiko Nakano, Toyotsugu Matsukura, Toshiaki Kanaoka