Patents by Inventor Su Pyo Hong

Su Pyo Hong 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).

  • DC switching apparatus with auxiliary contact device using microswitch
    Patent number: 10790105
    Abstract: A direct current (DC) switching apparatus is provided. The DC switch apparatus includes an auxiliary contact device includes at least one pair of stationary contacts; one or more coils, a movable iron core that is driven by the one or more coils; a movable contact table operating in engagement with the movable iron core, and an auxiliary contact device arranged below the movable iron core. The auxiliary contact device includes a microswitch.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: September 29, 2020
    Assignee: YM Tech Co., Ltd.
    Inventors: Hyun Kil Cho, Su Pyo Hong, Seung Min Lee