Patents by Inventor Haruo Nakata

Haruo Nakata 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).

  • Heat exchanger for air and freezer device
    Publication number: 20050257558
    Abstract: Surface portions A with a low heat capacity and surface portions B to which frost or ice is poorly bound or attached are discretely distributed on the heat exchange surface. The surface portions A and the surface portions B have features by which, when heating the heat exchanger to which frost or ice is attached, frost or ice in contact with the surface portions A melts earlier than frost or ice in contact with the surface portions B, and at least a part of frost or ice attached to the surface portions B is made partially continuous with at least a part of frost or ice attached to the surface portions A and is thereby released from the surface portions B by its own weight. The heat exchanger having such a heat exchange surface is used as an evaporator of a refrigeration apparatus.
    Type: Application
    Filed: November 25, 2003
    Publication date: November 24, 2005
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shun Yoshioka, Kazushige Kasai, Shinichirou Kobayashi, Haruo Nakata
  • Heat exchanger for air conditioning system
    Patent number: 4545428
    Abstract: In a heat exchanger for an air conditioning system including a plurality of heat exchanger tubes and a plurality of fins secured to outer surfaces of the heat transfer tubes, the fins are of a special constructional form, such as slitted fins having slits formed in flat or convoluted fins or spine fins, and the heat transfer tubes are each formed on its inner wall surface with spiral grooves or two systems of spiral grooves of large number. The heat transfer tubes define therein a refrigerant passage while the adjacent two fins define therebetween an air passage extending past the outer surfaces of the heat transfer tubes.
    Type: Grant
    Filed: August 29, 1984
    Date of Patent: October 8, 1985
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Toshiya Onishi, Susumu Oshima, Hiromi Mikata, Haruo Nakata, Masami Horiuchi
  • Heat exchanger for air conditioning system
    Patent number: 4480684
    Abstract: In a heat exchanger for an air conditioning system including a plurality of heat exchanger tubes and a plurality of fins secured to outer surfaces of the heat transfer tubes, the fins are of a special constructional form, such as slitted fins having slits formed in flat or convoluted fins or spine fins, and the heat transfer tubes are each formed on its inner wall surface with spiral grooves or two systems of spiral grooves of large number. The heat transfer tubes define therein a refrigerant passage while the adjacent two fins define therebetween an air passage extending past the outer surfaces of the heat transfer tubes.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: November 6, 1984
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Toshiya Onishi, Susumu Oshima, Hiromi Mikata, Haruo Nakata, Masami Horiuchi