Patents by Inventor Machiko NISHIYAMA

Machiko NISHIYAMA 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).

  • Publication number: 20240136133
    Abstract: An electromagnetic relay includes: a housing including a base and a case that opens downward and is provided on the base, the housing having an internal space surrounded by the base and the case; a main fixed contact; a main moving contact that comes into contact with and separates from the main fixed contact; an auxiliary fixed contact; an auxiliary moving contact that comes into contact with and separates from the auxiliary fixed contact; a coil provided in the housing such that a central axis extends in a vertical direction; an iron core disposed so as to be surrounded by the coil; a yoke disposed around the coil; an armature that is disposed to face an upper end of the iron core and swings in response to excitation/non-excitation of the coil; a movable part provided with the main moving contact and configured to move in response to swinging of the armature; and a partition wall that divides the internal space of the housing into a first space and a second space.
    Type: Application
    Filed: December 9, 2021
    Publication date: April 25, 2024
    Inventors: AKIHIRO OKUDA, MACHIKO NISHIYAMA
  • Publication number: 20240062979
    Abstract: A main fixed contact and a main moving contact are disposed on the front side of a coil, and an auxiliary fixed contact and an auxiliary moving contact are arranged above the coil in a housing. An auxiliary contact terminal includes an upper piece extending above the coil and provided with the auxiliary fixed contact or the auxiliary moving contact, a side piece connected to the upper piece and extending downward from the upper piece and disposed on a side of the coil, and a connecting piece connected to the side piece and provided so as to protrude outward from the housing. The side piece is press-fitted into a press-fitting portion formed in a coil bobbin, and the press-fitting portion includes an opening into which the side piece is press-fitted and a restriction wall formed around the opening so as to face the side piece.
    Type: Application
    Filed: December 9, 2021
    Publication date: February 22, 2024
    Inventors: AKIHIRO OKUDA, MACHIKO NISHIYAMA
  • Publication number: 20230197387
    Abstract: The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Inventors: Yoshimasa KATO, Yoshihide ASADA, Machiko NISHIYAMA
  • Patent number: 11615931
    Abstract: The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: March 28, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshimasa Kato, Yoshihide Asada, Machiko Nishiyama
  • Publication number: 20210166904
    Abstract: The electromagnetic relay includes a contact unit, an electromagnet, an armature unit, and a base. The contact unit includes a fixed contact and a movable spring including a movable contact. The armature unit is movable in accordance with excitation of the electromagnet to allow the movable contact to move between a closed position in contact with the fixed contact and an open position away from the fixed contact. The base holds the contact unit and the electromagnet on a certain surface side. The movable contact is placed between the base and the fixed contact in an arrangement direction in which the base and the electromagnet are arranged. The armature unit includes a press part which causes movement of the movable contact by applying a pressing force to a certain surface facing the fixed contact, of the movable spring.
    Type: Application
    Filed: October 25, 2018
    Publication date: June 3, 2021
    Inventors: Yoshimasa KATO, Yoshihide ASADA, Machiko NISHIYAMA
  • Patent number: 10811204
    Abstract: An electromagnetic relay includes an armature, and a movable body configured to move in association with a swing of the armature. The armature includes a support portion opposed to a leg portion of an iron core, a magnetic pole opposed to another leg portion of the iron core, and an arm portion extending to connect the support portion and the magnetic pole. A movable body is attached to the arm portion and provided with a pressure projection for moving movable contacts. The pressure projection is located on a segment connecting the center of gravity of the support portion and the center of gravity of the magnetic pole.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: October 20, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsushi Nakahata, Yoshimasa Kato, Machiko Nishiyama, Hironori Hounoki, Izumi Fujita
  • Publication number: 20180247782
    Abstract: An electromagnetic relay includes an armature, and a movable body configured to move in association with a swing of the armature. The armature includes a support portion opposed to a leg portion of an iron core, a magnetic pole opposed to another leg portion of the iron core, and an arm portion extending to connect the support portion and the magnetic pole. A movable body is attached to the arm portion and provided with a pressure projection for moving movable contacts. The pressure projection is located on a segment connecting the center of gravity of the support portion and the center of gravity of the magnetic pole.
    Type: Application
    Filed: July 28, 2016
    Publication date: August 30, 2018
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsushi NAKAHATA, Yoshimasa KATO, Machiko NISHIYAMA, Hironori HOUNOKI, Izumi FUJITA