Patents by Inventor Naotsugu Iishiki

Naotsugu Iishiki 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).

  • Patent number: 4920750
    Abstract: This is a heat exchanger having a heating cycle part and a thermal cycle part. The heating cycle part comprises a compressor which is driven by the thermal power cycle in a heating medium circulation line connecting a radiator and an evaporator while the thermal power cycle part includes a turbo-engine in the thermal power medium circulation line connecting a condenser and an evaporator. The output shaft of the turbo-engine is connected to the compressor, and a heater as a constant heat source is provided for heating the evaporator in the thermal power medium circulation line. If the compressor is replaced with a power generator, the heat exchanger can be used as a power generator/heat exchanger of temperature-difference-driven type. The components are housed in a pressure vessel to thereby simplify the structure without necessity for a special pressure resistance structure.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: May 1, 1990
    Assignee: Yamato Kosan Co., Ltd.
    Inventors: Naotsugu Iishiki, Shigetou Okano, Shiro Mishima
  • Patent number: 4876856
    Abstract: This is a heat exchanger having a heating cycle part and a thermal cycle part. The heating cycle part comprises a compressor which is driven by the thermal power cycle in a heating medium circulation line connecting a radiator and an evaporator while the thermal power cycle part includes a turbo-engine in the thermal power medium circulation line connecting a condenser and an evaporator. The output shaft of the turbo-engine is connected to the compressor, and a heater as a constant heat source is provided for heating the evaporator in the thermal power medium circulation line. If the compressor is replaced with a power generator, the heat exchanger can be used as a power generator/heat exchanger of temperature-difference-driven type. The components are housed in a pressure vessel to thereby simplify the structure without necessity for a special pressure resistant structure.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: October 31, 1989
    Assignee: Yamato Kosan Co., Ltd.
    Inventors: Naotsugu Iishiki, Shigetou Okano, Shiro Mishima