Patents by Inventor Tsuneo Uekusa

Tsuneo Uekusa 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).

  • Cooling apparatus and control method thereof
    Patent number: 5168715
    Abstract: A cooling apparatus includes a bypass provided to a path extending from a compressor to an expansion valve via a condenser, and a unit for controlling a ratio of a flow rate of a refrigerant of the path via the condenser to that of the bypass path, or a unit for varying an air volume of a fan of an outdoor unit for blowing the condenser so as to vary a capacity of the condenser. The degree of superheat of the refrigerant is measured at an exit of the evaporator, and an expansion valve is controlled in accordance with the measured degree of superheat.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: December 8, 1992
    Assignee: Nippon Telegraph and Telephone Corp.
    Inventors: Masaki Nakao, Kazuo Ohshima, Tsuneo Uekusa