Patents by Inventor Tomomi Yoshiyama

Tomomi Yoshiyama 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).

  • Electromagnetic relay
    Patent number: 9324524
    Abstract: An electromagnetic relay includes a movable iron core arranged to move up and down within a center hole of an electromagnet unit formed by winding a coil, and a contact switch where an upper end surface of the movable iron core attaches to and detaches from a lower end surface of a fixed iron core arranged in the center hole according to magnetization and demagnetization of the electromagnet unit and a movable contact attaches to and detaches from a fixed contact by a movable shaft which reciprocates along with the movable iron core where the movable iron core includes a sliding portion which always abuts an auxiliary yoke disposed within a yoke, and where a height dimension of the sliding portion is at least equal to or larger than a plate thickness dimension of the yoke.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: April 26, 2016
    Assignee: OMRON Corporation
    Inventors: Kensuke Kawaguchi, Kazuchika Hiroki, Ikuhiro Yoshihara, Tomohiro Yamakita, Haruki Ayado, Tomomi Yoshiyama, Hiroyuki Iwasaka
  • ELECTROMAGNETIC RELAY
    Publication number: 20150123753
    Abstract: An electromagnetic relay includes a movable iron core arranged to move up and down within a center hole of an electromagnet unit formed by winding a coil, and a contact switch where an upper end surface of the movable iron core attaches to and detaches from a lower end surface of a fixed iron core arranged in the center hole according to magnetization and demagnetization of the electromagnet unit and a movable contact attaches to and detaches from a fixed contact by a movable shaft which reciprocates along with the movable iron core where the movable iron core includes a sliding portion which always abuts an auxiliary yoke disposed within a yoke, and where a height dimension of the sliding portion is at least equal to or larger than a plate thickness dimension of the yoke.
    Type: Application
    Filed: May 29, 2012
    Publication date: May 7, 2015
    Applicant: OMRON CORPORATION
    Inventors: Kensuke Kawaguchi, Kazuchika Hiroki, Ikuhiro Yoshihara, Tomohiro Yamakita, Haruki Ayado, Tomomi Yoshiyama, Hiroyuki Iwasaka