Patents by Inventor Hyun Kil Cho

Hyun Kil Cho 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: 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
  • Patent number: 10343315
    Abstract: The present invention relates to an injection molding method using a fiber-reinforced composite material as an insert, and an injection molded product, and provides an injection molding method comprising: a step of preparing a fiber-reinforced composite material having a high-strength fiber, which is an insert material, impregnated in a resin; an insert formation step of manufacturing an insert by molding the fiber-reinforced composite material into a preliminary shape; and an injection molding step of manufacturing an injection product by arranging the insert in an injection mold and injecting a resin.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: July 9, 2019
    Assignee: LG HAUSYS, LTD.
    Inventors: Sang-Gyu Cho, Yong-Kil Kil, Dong-Won Kim, Yong-Han Kang, Hee-June Kim, Hyun-Jin Choi, Kye-Woong Byun
  • Patent number: 8188818
    Abstract: A relay comprises: a solenoid; a hermetically sealed chamber mounted at a lower end thereof with a cylinder into which a center portion of the spool is inserted, mounted at an upper end thereof with a pair of stationary terminals each provided at a stationary contact point and filled therein with insulating gas to be coupled at an upper portion of the spool; an insulation member insulating the chamber and the stationary terminals; a movable unit including a shaft, a conductive movable terminal, and a pair of movable contact points; a restoring spring to pull the shaft toward the lower surface of the cylinder; and an insulated sliding guide to guide the movable unit that is moved by the solenoid and the restoring spring.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: May 29, 2012
    Assignee: LS Industrial Systems Co., Ltd.
    Inventors: Hyun Kil Cho, Yeong Bong Kim
  • Publication number: 20100060392
    Abstract: A relay comprises: a solenoid; a hermetically sealed chamber mounted at a lower end thereof with a cylinder into which a center portion of the spool is inserted, mounted at an upper end thereof with a pair of stationary terminals each provided at a stationary contact point and filled therein with insulating gas to be coupled at an upper portion of the spool; an insulation member insulating the chamber and the stationary terminals; a movable unit including a shaft, a conductive movable terminal, and a pair of movable contact points; a restoring spring to pull the shaft toward the lower surface of the cylinder; and an insulated sliding guide to guide the movable unit that is moved by the solenoid and the restoring spring.
    Type: Application
    Filed: July 14, 2009
    Publication date: March 11, 2010
    Inventors: Hyun Kil Cho, Yeong Bong Kim
  • Publication number: 20090284335
    Abstract: The present invention provides a low-noise electromagnetic switch applied to an electric car, whereby noise generated by vibration from an inner switch is prevented from being transmitted to the outside box by filling up a filler-up material between the inner switch and the outside box.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 19, 2009
    Inventors: YEONG BONG KIM, Hyun Kil Cho, Hong Tae Park