Patents by Inventor Mitsuaki Taira

Mitsuaki Taira 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 rotary electric machine
    Patent number: 6698083
    Abstract: A winding on a stator of a rotary electric machine is constructed by welding end portions of a plurality of segments. A plurality of pairs arranged on an end of the stator are welded by a welder. In a welding stage, the pairs are held by a plurality of insertion rods of a circumferential side holding tool. The insertion rods are radially disposed. The insertion rods are movable in a radial direction. The insertion rods are moved back toward a radial outside to release a holding of the pairs after ball-shaped welding marks are formed. Holding is released without damage on the welding mark.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: March 2, 2004
    Assignee: Denso Corporation
    Inventors: Takashi Tokizawa, Mitsuru Kato, Mitsuaki Taira
  • Method and manufacturing rotary electric machine
    Publication number: 20030024101
    Abstract: A winding on a stator of a rotary electric machine is constructed by welding end portions of a plurality of segments. A plurality of pairs arranged on an end of the stator are welded by a welder. In a welding stage, the pairs are held by a plurality of insertion rods of a circumferential side holding tool. The insertion rods are radially disposed. The insertion rods are movable in a radial direction. The insertion rods are moved back toward a radial outside to release a holding of the pairs after ball-shaped welding marks are formed. Holding is released without damage on the welding mark.
    Type: Application
    Filed: October 4, 2002
    Publication date: February 6, 2003
    Applicant: Denso Corporation
    Inventors: Takashi Tokizawa, Mitsuru Kato, Mitsuaki Taira
  • Method for manufacturing rotary electric system
    Patent number: 6490779
    Abstract: A winding on a stator of a rotary electric machine is constructed by welding end portions of a plurality of segments. A plurality of pairs arranged on an end of the stator are welded by a welder. In a welding stage, the pairs are held by a plurality of insertion rods of a circumferential side holding tool. The insertion rods are radially disposed. The insertion rods are movable in a radial direction. The insertion rods are moved back toward a radial outside to release a holding of the pairs after ball-shaped welding marks are formed. Holding is released without damage on the welding mark.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: December 10, 2002
    Assignee: Denso Corporation
    Inventors: Takashi Tokizawa, Mitsuru Kato, Mitsuaki Taira
  • Electric rotary machine having a plurality of conductor segments and method of manufacturing the same
    Patent number: 6459177
    Abstract: The invention provides a rotary electric machine and method of manufacturing same, having a plurality of conductor segments inserted in a plurality of slots of a stator core. The conductor segments are welded together at adjacent connection ends by a welding arc so that the welding arc forms melted portions. The melted portions form vestiges that swell in a circumferential direction.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: October 1, 2002
    Assignee: Denso Corporation
    Inventors: Shigenobu Nakamura, Mamoru Urushizaki, Mitsuru Katoh, Mitsuaki Taira
  • Method and apparatus for welding a plurality of windings of rotary electric machine
    Patent number: 6403921
    Abstract: A method of welding a plurality of connection ends of a plurality of copper segments forming a circumferentially disposed stator winding of a rotary electric machine. The method includes a step of inserting a protection member between connection ends of adjacent two of the plurality of copper segments, a step of activating a welder tool, and a step of circumferentially moving the welder tool relative to the connection ends.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: June 11, 2002
    Assignee: Denso Corporation
    Inventors: Kazutaka Maeda, Mitsuru Kato, Mitsuaki Taira, Kimihiro Kuno, Mamoru Urushizaki