Patents by Inventor Takahide Oohara

Takahide Oohara 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
    Patent number: 8925625
    Abstract: A heat exchanger has a flat tube (10) having a curved portion (13). A part of the curved portion (13) is formed by overlapping an outer rim (22) on an inner rim (21). The inner rim (21) has a small curvature region (102). The small curvature region (102) is inclined to a flat plate portion (11), and is defined by a radius larger than a difference between a half of a thickness of the flat tube (10) and a thickness of the outer rim (22). The small curvature region (102) is not beyond a center line (C1) in a thickness of the flat tube (10). The outer rim (22) extends beyond the center line (C1). The outer rim (22) has an end face (22a) placed on the small curvature region (102). The flat tube (10) has flared portions (15, 16) expanded at insertion holes (54).
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: January 6, 2015
    Assignee: Denso Corporation
    Inventors: Toshihide Ninagawa, Tatsuo Ozaki, Takahide Oohara, Noriyuki Miyazaki, Mitsuyoshi Saito, U Ou, Norio Yoshida, Tetsuya Sakakibara, Kazuhiro Mitsukawa
  • TUBE FOR HEAT EXCHANGER
    Publication number: 20130220585
    Abstract: A cylindrical member of a tube for a heat exchanger is made of a pair of flat plate portions, and a pair of curved portions for connecting the pair of flat plate portions to each other. One of the pair of curved portions constructs a bonded portion in which an outer wall portion and an inner wall portion are bonded to each by brazing in a state where the outer wall portion and the inner wall portion overlap each other. The inner wall portion has a portion opposite to the outer wall portion put into close contact with the outer wall portion and is bonded to the one flat plate portion in a state where a tip end portion of the inner wall portion opposite to the one flat plate portion is separated from the one flat plate portion.
    Type: Application
    Filed: November 4, 2011
    Publication date: August 29, 2013
    Applicant: DENSO CORPORATION
    Inventors: Takahide Oohara, Hiroshi Hamada, Norio Yoshido, Tetsuya Sakakibara, Kazuhiro Mitsukawa, U Ou, Hiroyuki Genda, Mitsuyoshi Saitou, Tadashi Nakabou, Noriyuki Miyazaki, Norimasa Baba, Hiroyasu Shimanuki
  • HEAT EXCHANGER
    Publication number: 20100051252
    Abstract: A heat exchanger has a flat tube (10) having a curved portion (13). A part of the curved portion (13) is formed by overlapping an outer rim (22) on an inner rim (21). The inner rim (21) has a small curvature region (102). The small curvature region (102) is inclined to a flat plate portion (11), and is defined by a radius larger than a difference between a half of a thickness of the flat tube (10) and a thickness of the outer rim (22). The small curvature region (102) is not beyond a center line (C1) in a thickness of the flat tube (10). The outer rim (22) extends beyond the center line (C1). The outer rim (22) has an end face (22a) placed on the small curvature region (102). The flat tube (10) has flared portions (15, 16) expanded at insertion holes (54).
    Type: Application
    Filed: July 10, 2008
    Publication date: March 4, 2010
    Applicant: Denso Corproation
    Inventors: Toshihide Ninagawa, Tatsuo Ozaki, Takahide Oohara