Patents by Inventor Takeji Yogo

Takeji Yogo 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: 4892136
    Abstract: An automotive oil cooler used in combination with an oil filter. The oil cooler is comprised of a heat exchange element which is constructed of a plurality of heat transmission plates. The heat transmission plates are piled up one upon another and fixedly secured by brazing in such a manner as to define oil and water flowing spaces on the opposite sides of each heat transmission plate. Oil and water flow through the oil and water flowing spaces, respectively. The heat exchange element is formed with a plurality of oil supply passages through which oil is supplied to the oil filter, an oil inflow passage communicating with the oil flowing space to receive oil from the oil filter, an oil outflow passage communicating with the oil flowing space to receive oil from the oil flowing space, a water inflow passage communicating with the water flowing passage, and a water outflow passage communicating with the water flowing space to receive water from the water flowing space.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: January 9, 1990
    Assignee: Kabushiki Kaisha Tsuchiya Seisakusho
    Inventors: Takayuki Ichihara, Takeji Yogo, Masuhito Iinuma, Eriya Arita, Haruo Yokoo
  • Patent number: 4708199
    Abstract: A heat exchange element of a plate type heat exchanger consists of a plurality of heat transmission plates having an equivalent shape. Each heat transmission plate is formed with flanged through-holes and openings so that each flanged through-hole and each opening are alternately located and separate from each other by a predetermined peripheral distance along a circle of the heat transmission plate. The heat transmission plates are disposed one upon another and sealingly secured to each other in such a manner that one of adjacent heat transmission plates is shifted the predetermined peripheral distance along the circle relative to the other heat transmission plate, thereby enabling to produce the heat exchanger heat exchange element by using only the heat transmission plates of the equivalent shape.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: November 24, 1987
    Assignee: Kabushiki Kaisha Tsuchiya Seisakusho
    Inventors: Takeji Yogo, Akitsuna Nakagaki, Akio Miyazawa, Takeshi Mitomo, Takayuki Ichihara
  • Patent number: 4653581
    Abstract: A plate type heat exchanger consists of a plurality of heat transmission plates which are piled up and secured to each other. Side wall members are interposed between the adjacent heat transmission plates, so that multiple stages of spaces are formed in the heat exchanger. Additionally, separator wall members are interposed between the adjacent heat transmission plates in such a manner that two fluid paths are defined in alternate stages of the spaces. The side wall members and the separator members are formed of rod material, thereby rendering the heat exchanger light in weight while lowering the production cost of the heat exchanger.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: March 31, 1987
    Assignee: Kabushiki Kaisha Tsuchiya Seisakusho
    Inventors: Takeji Yogo, Akitsuna Nakagaki, Akio Miyazawa