Patents by Inventor Katsuro Arimura

Katsuro Arimura 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).

  • Exhaust pipe structure
    Patent number: 7383912
    Abstract: An exhaust pipe structure has, under a floor of a vehicle, an exhaust passage for exhaust gas discharged from a vehicle-installed engine, and at least one muffler is provided on an intermediate portion of the exhaust passage. The at least one muffler includes a main muffler having the greatest muffler capacity. An external cylinder forming an outer shell portion of the main muffler has a circular sectional shape having a diameter of 100 mm to 150 mm, or a sectional shape that is substantially equal to an area of the circular sectional shape. The external cylinder has a length of 800 mm to 12000 mm. The main muffler is disposed in a tunnel portion that is formed between the front wheels and the rear wheels.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: June 10, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tadashi Kondo, Junichi Yamaguchi, Yohika Arimura, legal representative, Katsuro Arimura
  • Exhaust pipe structure
    Publication number: 20040069562
    Abstract: An exhaust pipe structure has, under a floor of a vehicle, an exhaust passage for exhaust gas discharged from a vehicle-installed engine, and at least one muffler is provided on an intermediate portion of the exhaust passage. The at least one muffler includes a main muffler having the greatest muffler capacity. An external cylinder forming an outer shell portion of the main muffler has a circular sectional shape having a diameter of 100 mm to 150 mm, or a sectional shape that is substantially equal to an area of the circular sectional shape. The external cylinder has a length of 800 mm to 12000 mm. The main muffler is disposed in a tunnel portion that is formed between the front wheels and the rear wheels.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 15, 2004
    Inventors: Tadashi Kondo, Junichi Yamaguchi, Katsuro Arimura