Patents by Inventor Tsunehiro Uehara

Tsunehiro Uehara 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 for manufacturing injection hole member
    Patent number: 8631579
    Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: January 21, 2014
    Assignees: Denso Corporation, Komatsuseiki Kosakusho Co., Ltd.
    Inventors: Masanori Miyagawa, Tsunehiro Uehara
  • Method for manufacturing injection hole member
    Publication number: 20110138628
    Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.
    Type: Application
    Filed: February 14, 2011
    Publication date: June 16, 2011
    Applicants: DENSO CORPORATION, KOMATSUSEIKI KOSAKUSHO CO., LTD.
    Inventors: Masanori Miyagawa, Tsunehiro Uehara
  • Method for manufacturing injection hole member
    Patent number: 7908733
    Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: March 22, 2011
    Assignees: Denso Corporation, Komatsuseiki Kosakusho Co., Ltd
    Inventors: Masanori Miyagawa, Tsunehiro Uehara
  • Method for manufacturing a nozzle plate
    Patent number: 7827691
    Abstract: A method for manufacturing a nozzle plate, which has a nozzle hole, includes radiating of a plurality of laser beams. The method further includes applying of the plurality of laser beams to at least one axial end surface of a plate member substantially throughout an inner circumferential periphery, which defines a boundary between a small hole defining the nozzle hole and the plate member.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: November 9, 2010
    Assignees: Denso Corporation, Komatsuseiki Kosakusho Co., Ltd
    Inventors: Masanori Miyagawa, Tsunehiro Uehara
  • Method for manufacturing injection hole member
    Publication number: 20090007411
    Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.
    Type: Application
    Filed: September 4, 2008
    Publication date: January 8, 2009
    Applicants: DENSO CORPORATION, KOMATSUSEIKI KOSAKUSHO CO., LTD.
    Inventors: Masanori Miyagawa, Tsunehiro Uehara
  • Method for manufacturing nozzle plate and method for shaping nozzle hole for the same
    Publication number: 20080000085
    Abstract: A method for manufacturing a nozzle plate, which has a nozzle hole, includes radiating of a plurality of laser beams. The method further includes applying of the plurality of laser beams to at least one axial end surface of a plate member substantially throughout an inner circumferential periphery, which defines a boundary between a small hole defining the nozzle hole and the plate member.
    Type: Application
    Filed: June 27, 2007
    Publication date: January 3, 2008
    Applicants: DENSO CORPORATION, KOMATSUSEIKI KOSAKUSHO CO., LTD.
    Inventors: Masanori Miyagawa, Tsunehiro Uehara
  • Method for manufacturing injection hole member
    Publication number: 20040163254
    Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.
    Type: Application
    Filed: December 29, 2003
    Publication date: August 26, 2004
    Inventors: Masanori Miyagawa, Tsunehiro Uehara