Patents by Inventor Hirofumi Takanuki

Hirofumi Takanuki 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 processing device and manufacturing method thereof
    Patent number: 8540793
    Abstract: An exhaust processing device includes a main body tube portion and a closing tube portion. The main body tube portion includes an opening in an axial end thereof, houses a main body exhaust path in an inside thereof, which allows an exhaust gas to pass therethrough. The closing tube portion includes a plate portion and a tubular portion. The plate portion covers the opening of the axial end of the main body tube portion. The tubular portion radially outwardly protrudes from an outer peripheral surface of the main body tube portion, and is integrated with the plate portion. The tubular portion houses an exhaust path in an inside thereof, which communicates with the main body exhaust path. The tubular portion of the closing tube portion includes a first split half portion integrally molded with the plate portion, and a second split half portion joined to the first split half portion.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: September 24, 2013
    Assignee: Komatsu Ltd.
    Inventors: Yuuki Kasaoka, Tatsushi Itou, Shouhei Nagasaka, Hirofumi Takanuki
  • EXHAUST PROCESSING DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20110047963
    Abstract: An exhaust processing device includes a main body tube portion and a closing tube portion. The main body tube portion includes an opening in an axial end thereof, houses a main body exhaust path in an inside thereof, which allows an exhaust gas to pass therethrough. The closing tube portion includes a plate portion and a tubular portion. The plate portion covers the opening of the axial end of the main body tube portion. The tubular portion radially outwardly protrudes from an outer peripheral surface of the main body tube portion, and is integrated with the plate portion. The tubular portion houses an exhaust path in an inside thereof, which communicates with the main body exhaust path. The tubular portion of the closing tube portion includes a first split half portion integrally molded with the plate portion, and a second split half portion joined to the first split half portion.
    Type: Application
    Filed: May 8, 2009
    Publication date: March 3, 2011
    Applicant: KOMATSU LTD.
    Inventors: Yuuki Kasaoka, Tatsushi Itou, Shouhei Nagasaka, Hirofumi Takanuki