Patents by Inventor Seiichi Ohtsu

Seiichi Ohtsu 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: 6138415
    Abstract: A seal structure for a vehicle door which stabilizes the appearance of the lip portion on the door and prevents the chipping of the flange tip portion on the side of the door. In a vehicle, a door (10) is mounted so as to cover the outer side of a fender (2). On the door (10) is mounted a weather strip (14) and a seal member (20) positioned facing the side of the fender (2). A flange portion (12) formed integrally with the door (10) is positioned so as to extend towards the fender (2). The seal member (20) includes a door fixing portion (22), a lip portion (21), and a cover portion (23), and is positioned so as to cover the flange portion (12) with the door fixing portion (22). An arch cover (3) is removably mounted to the portion of the fender (2) with which the lip portion (21) is contacted.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Isuzu Motors Limited
    Inventors: Seiichi Ohtsu, Toshio Aoki
  • Patent number: 6017067
    Abstract: A latch device on a vehicle tailgate having upper and lower doors comprises an open handle assembly for releasing a lower latch assembly from a lower striker, a key cylinder for releasing an upper latch assembly and an upper striker, a coupling mechanism displaceable between a locked position for disabling an opening operation of the handle assembly and an unlocked position for enabling the opening operation of the handle assembly. The upper latch assembly has a latch and a ratchet. The ratchet is displaceable between an engaging position for engaging with the latch located in a door-closed position and an initial position for making contact with the latch located in a door-open position. The coupling mechanism is displaced to the locked position when the ratchet is in the engaging position and displaced to the unlocked position when the ratchet is in the initial position.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: January 25, 2000
    Assignees: Mitsui Kinzoku Kogyo Kabushiki Kaisha, Isuzu Motors Limited
    Inventors: Fumihiro Yoneyama, Seiichi Ohtsu, Nobuhiro Horikiri, Yoshiaki Takahashi
  • Patent number: 4842055
    Abstract: A heat exchanger of vertical type in which fluid flows vertically downwardly comprises a cylindrical outer shell which is approximately divided by upper and lower tube plates into an upper plenum, a lower water passage, and an intermediate heat exchanging passage. A plurality of metal-made heat exchanger tubes are disposed in parallel in the heat exchanging passage with both ends supported by the upper and lower tube plates, respectively. A plurality of metal-made fluid flow throttling members are adjustably contacted to a lower end of the heat exchanger tube and inserted into the lower end opening of the corresponding heat exchanger tubes, respectively.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: June 27, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Seiichi Ohtsu