Patents by Inventor Takuji Izutani

Takuji Izutani 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).

  • Method of assembling motor vehicle body
    Patent number: 7608801
    Abstract: A roof panel (31) is pre-set on the left and right side members (4) fixed to an underbody of a car. A roof panel spot welding station (7) includes a pair of frames (34) and two joisted-locating jigs (35, 36) bridging the frames. Each of the joisted-locating jigs is furnished with a clamp mechanism for holding the roof panel. The roof panel is located to the side members by the locating jigs, and spot-welded to the side members.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: October 27, 2009
    Assignee: Daihatsu Motor Co., Ltd.
    Inventors: Shinobu Inoue, Masaharu Saito, Akiyoshi Hazama, Yasuhiro Hosokawa, Takuma Arai, Isao Kita, Takuji Izutani, Kazuto Ikeda
  • Method of assembling motor vehicle body
    Patent number: 7498541
    Abstract: Each of a pair of side members (4) is located relative to an underbody (3) using two locators (16). Each locator is lowered by a lifter (15) and placed on a slide base (18). The slide base is movable along a slide guide (17) toward and away from a transfer conveyor (11).
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: March 3, 2009
    Assignee: Daihatsu Motor Co., Ltd.
    Inventors: Shinobu Inoue, Masaharu Saito, Akiyoshi Hazama, Yasuhiro Hosokawa, Takuma Arai, Isao Kita, Takuji Izutani, Kazuto Ikeda
  • Vehicle body assembly method
    Patent number: 7448529
    Abstract: Objectives of the present invention are to reduce the size and weight of side-member and roofjigs, and to simplify analysis of problems related to ease-of-assembly of vehicle body roofs and side-members. In a first step, using clamping jigs 11-1 through 11-4, a left and right pair of side-members 4 are positioned with respect to an underbody 3 (that was positioned at a prescribed position in a vehicle body assembly line 2), and welded in place. Continuing in a second step, after the clamping jigs 11-1 through 11-4 have been released, a roof 31 is placed on upper welding edges of the left and right side-members 4 while being positioned using suspension jigs 35 and 36, after which it is welded in place.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: November 11, 2008
    Assignee: Daihatsu Motor Co., Ltd.
    Inventors: Jyunji Motomi, Isao Kita, Tadao Nasu, Takuji Izutani, Kaname Akagi, Kazuto Ikeda, Hiromichi Arayama
  • Method of assembling motor vehicle body
    Publication number: 20060042067
    Abstract: Each of a pair of side members (4) is located relative to an underbody (3) using two locators (16). Each locator is lowered by a lifter (15) and placed on a slide base (18). The slide base is movable along a slide guide (17) toward and away from a transfer conveyor (11).
    Type: Application
    Filed: October 17, 2003
    Publication date: March 2, 2006
    Applicant: DAIHATSU MOTOR CO., LTD.
    Inventors: Shinobu Inoue, Masaharu Saito, Akiyoshi Hazama, Yasuhiro Hosokawa, Takuma Arai, Isao Kita, Takuji Izutani, Kazuto Ikeda
  • Method of assembling motor vehicle body
    Publication number: 20060037185
    Abstract: A roof panel (31) is pre-set on the left and right side members (4) fixed to an underbody of a car. A roof panel spot welding station (7) includes a pair of frames (34) and two joisted-locating jigs (35, 36) bridging the frames. Each of the joisted-locating jigs is furnished with a clamp mechanism for holding the roof panel. The roof panel is located to the side members by the locating jigs, and spot-welded to the side members.
    Type: Application
    Filed: October 17, 2003
    Publication date: February 23, 2006
    Inventors: Shinobu Inoue, Masaharu Saito, Akiyoshi Hazama, Yasuhiro Hosokawa, takuma Arai, Isao Kita, Takuji Izutani, Kazuto Ikeda
  • Vehicle body assembly method
    Publication number: 20050017057
    Abstract: Objectives of the present invention are to reduce the size and weight of side-member and roofjigs, and to simplify analysis of problems related to ease-of-assembly of vehicle body roofs and side-members. In a first step, using clamping jigs 11-1 through 11-4, a left and right pair of side-members 4 are positioned with respect to an underbody 3 (that was positioned at a prescribed position in a vehicle body assembly line 2), and welded in place. Continuing in a second step, after the clamping jigs 11-1 through 11-4 have been released, a roof 31 is placed on upper welding edges of the left and right side-members 4 while being positioned using suspension jigs 35 and 36, after which it is welded in place.
    Type: Application
    Filed: October 1, 2002
    Publication date: January 27, 2005
    Inventors: Jyunji Motomi, Isao Kita, Tadao Nasu, Takuji Izutani, Kaname Akagi, Kazuto Ikeda, Hiromichi Arayama