Patents by Inventor Yoshikazu Tajiri

Yoshikazu Tajiri 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).

  • Patent number: 11721506
    Abstract: An electromagnetic device includes a spool including a cylindrical body portion in which a through hole extending to a first direction is provided, a coil wound around the body portion, an iron core disposed in a through hole of the body portion, a yoke including a first member and a second member, the first member being connected to the iron core and the second member extending from the first member along an outer peripheral surface of the coil, and a movable iron piece, which has a plate shape, including a bent portion in a middle thereof. The yoke includes at least one positioning projection provided in a middle of the free end in the second direction. The movable iron piece includes a positioning recessed portion that accommodates and positions the positioning projection, the positioning recessed portion being provided in a middle between the pair of rotation supporting points.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: August 8, 2023
    Assignee: OMRON CORPORATION
    Inventors: Yoshihiro Azuma, Yoshikazu Tajiri
  • Publication number: 20220108857
    Abstract: An electromagnetic device includes a spool including a cylindrical body portion in which a through hole extending to a first direction is provided, a coil wound around the body portion, an iron core disposed in a through hole of the body portion, a yoke including a first member and a second member, the first member being connected to the iron core and the second member extending from the first member along an outer peripheral surface of the coil, and a movable iron piece, which has a plate shape, including a bent portion in a middle thereof. The yoke includes at least one positioning projection provided in a middle of the free end in the second direction. The movable iron piece includes a positioning recessed portion that accommodates and positions the positioning projection, the positioning recessed portion being provided in a middle between the pair of rotation supporting points.
    Type: Application
    Filed: January 29, 2020
    Publication date: April 7, 2022
    Inventors: Yoshihiro AZUMA, Yoshikazu TAJIRI
  • Patent number: 10374337
    Abstract: A terminal block includes a housing that has an opening through which a wire is to be inserted, a terminal configured to be connected to the wire that is inserted through the opening, and a plate spring member configured to fix the wire by pressing the wire against the terminal. The plate spring member has a pressing portion configured to press the wire against the terminal, and a plastic deformation preventing portion configured to prevent the pressing portion from bending in a direction away from the terminal by more than a predetermined amount.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 6, 2019
    Assignee: OMRON Corporation
    Inventors: Shinya Tsuji, Yoshikazu Tajiri, Tatsuro Ishikawa, Kiyokazu Matsunaga
  • Publication number: 20180183158
    Abstract: A terminal block includes a housing that has an opening through which a wire is to be inserted, a terminal configured to be connected to the wire that is inserted through the opening, and a plate spring member configured to fix the wire by pressing the wire against the terminal. The plate spring member has a pressing portion configured to press the wire against the terminal, and a plastic deformation preventing portion configured to prevent the pressing portion from bending in a direction away from the terminal by more than a predetermined amount.
    Type: Application
    Filed: October 18, 2017
    Publication date: June 28, 2018
    Applicant: OMRON Corporation
    Inventors: Shinya TSUJI, Yoshikazu TAJIRI, Tatsuro ISHIKAWA, Kiyokazu MATSUNAGA
  • Patent number: 9819121
    Abstract: A screwless terminal block allows easy insertion and removal of a wire. A housing (2) includes a fixture insertion opening (23) through which a rod-like fixture (6) is inserted to come in contact with a contact pressure spring (4) and deform the spring (4) away from a wire (5). When the fixture (6) is inserted through the fixture insertion opening (23), an acute angle of 45° or less is formed by an axis of the fixture (6) and a straight line connecting a contact point A between the housing (2) and a part of the fixture (6) adjacent to the wire insertion opening (24) and a contact point B between the housing (2) and a part of the fixture (6) adjacent to the spring (4) at a cross-section taken along a plane including the axis of the fixture (6) and parallel to a pressing direction of the spring (4).
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: November 14, 2017
    Assignee: OMRON CORPORATION
    Inventors: Kenichiro Masaki, Keisuke Yano, Hiroshi Hashimoto, Yoshikazu Tajiri, Tomokazu Ikeda, Shinya Tsuji, Taijiro Fujiwara, Masahiro Ono, Masao Nagase, Yusuke Komoguchi
  • Patent number: 9774133
    Abstract: A screwless terminal block allows easy insertion and removal of a wire. A housing (2) includes a fixture insertion opening (23) through which a rod-like fixture (6) is inserted to come in contact with a contact pressure spring (4) and deform the spring (4) away from a wire (5). When the fixture (6) is inserted through the fixture insertion opening (23), an acute angle of 45° or less is formed by an axis of the fixture (6) and a straight line connecting a contact point A between the housing (2) and a part of the fixture (6) adjacent to the wire insertion opening (24) and a contact point B between the housing (2) and a part of the fixture (6) adjacent to the spring (4) at a cross-section taken along a plane including the axis of the fixture (6) and parallel to a pressing direction of the spring (4).
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: September 26, 2017
    Assignee: OMRON CORPORATION
    Inventors: Kenichiro Masaki, Keisuke Yano, Hiroshi Hashimoto, Yoshikazu Tajiri, Tomokazu Ikeda, Shinya Tsuji, Taijiro Fujiwara, Masahiro Ono, Masao Nagase, Yusuke Komoguchi
  • Publication number: 20170256882
    Abstract: A screwless terminal block allows easy insertion and removal of a wire. A housing (2) includes a fixture insertion opening (23) through which a rod-like fixture (6) is inserted to come in contact with a contact pressure spring (4) and deform the spring (4) away from a wire (5). When the fixture (6) is inserted through the fixture insertion opening (23), an acute angle of 45° or less is formed by an axis of the fixture (6) and a straight line connecting a contact point A between the housing (2) and a part of the fixture (6) adjacent to the wire insertion opening (24) and a contact point B between the housing (2) and a part of the fixture (6) adjacent to the spring (4) at a cross-section taken along a plane including the axis of the fixture (6) and parallel to a pressing direction of the spring (4).
    Type: Application
    Filed: December 19, 2016
    Publication date: September 7, 2017
    Applicant: OMRON Corporation
    Inventors: Kenichiro MASAKI, Keisuke YANO, Hiroshi HASHIMOTO, Yoshikazu TAJIRI, Tomokazu IKEDA, Shinya TSUJI, Taijiro FUJIWARA, Masahiro ONO, Masao NAGASE, Yusuke KOMOGUCHI
  • Patent number: D792351
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: July 18, 2017
    Assignee: OMRON Corporation
    Inventors: Kenichiro Masaki, Koyuru Nakano, Shinya Tsuji, Yoshikazu Tajiri
  • Patent number: D796452
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: September 5, 2017
    Assignee: OMRON Corporation
    Inventors: Kenichiro Masaki, Kazumune Kishikawa, Tomonori Shiraishi, Yoshikazu Tajiri, Shinya Tsuji
  • Patent number: D800074
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: October 17, 2017
    Assignee: OMRON Corporation
    Inventors: Kenichiro Masaki, Koyuru Nakano, Shinya Tsuji, Yoshikazu Tajiri