Patents by Inventor Tatsushi Ito

Tatsushi Ito 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).

  • Pipe expanding method and pipe expanding device for steel pipe
    Patent number: 8365571
    Abstract: A pipe expanding device inserts a pipe expanding punch into an opening end portion of a steel pipe with a special shape in the state where the opening end portion of the steel pipe with a special shape is pressed in an insertion direction of the punch.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: February 5, 2013
    Assignee: Komatsu Ltd.
    Inventors: Takahiro Noguchi, Tatsushi Ito, Fumiaki Kawahara
  • PIPE EXPANDING METHOD AND PIPE EXPANDING DEVICE FOR STEEL PIPE
    Publication number: 20090090159
    Abstract: A pipe expanding device inserts a pipe expanding punch into an opening end portion of a steel pipe with a special shape in the state where the opening end portion of the steel pipe with a special shape is pressed in an insertion direction of the punch.
    Type: Application
    Filed: May 14, 2007
    Publication date: April 9, 2009
    Applicant: KOMATSU LTD.
    Inventors: Takahiro Noguchi, Tatsushi Ito, Fumiaki Kawahara
  • Long structural member
    Publication number: 20030126772
    Abstract: A member constituting a support-connecting portion with another support structural member is a cast member, and the cast member is integrally built up with a long member formed of a plate material so as to avoid stress concentration. In a long structural member for equipment including a connecting structural portion at a proximal portion, a proximal constitutive portion (6) including a boss (7) and a bracket (8), which are a connecting support portion at the proximal portion, is integrally formed of cast steel. The cast steel proximal constitutive portion (6) is connected and built up with a steel long portion (2) at a connected portion, and thereafter, are integrally welded together.
    Type: Application
    Filed: January 3, 2003
    Publication date: July 10, 2003
    Applicant: KOMATSU LTD
    Inventors: Nobuyoshi Masumoto, Toshio Tanaka, Tatsushi Ito, Kaoru Adachi