Patents by Inventor Jung-Hun JI

Jung-Hun JI 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: 20200347797
    Abstract: There is provided a method for manufacturing a piston for a vehicle engine, including: a piston assembling step of forming a piston assembly by assembling a first piston part, a bonding member and a second piston part, wherein the first piston part has two or more bonding surfaces separated from each other and extended in a circumferential direction, and the second piston part has two or more bonding surfaces separated from each other and extended in the circumferential direction; a piston diffusion brazing step of diffusion brazing the first piston part, the bonding member and the second piston part under an open atmosphere by heating the formed piston assembly; and a piston cooling step of cooling a piston unit formed by diffusion brazing the first piston part, the bonding member and the second piston part.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 5, 2020
    Applicant: Dong Yang Piston Co., Ltd.
    Inventors: Jun-Kui YANG, Kwan-Ho RYU, Jeong-Keun LEE, Ju-Hyun SUN, Sang-Bean PARK, Jung-Hun JI
  • Patent number: 10724466
    Abstract: There is provided a method for manufacturing a piston, including: a piston assembling step of forming a piston assembly by assembling a first piston part, a bonding member and a second piston part, wherein the first piston part has two or more bonding surfaces separate from each other and extending in a circumferential direction, and the second piston part has two or more bonding surfaces separate from each other and extending in the circumferential direction; a piston diffusion brazing step of diffusion brazing the first piston part, the bonding member and the second piston part under an open atmosphere by heating the formed piston assembly; and a piston cooling step of cooling a piston unit formed by diffusion brazing the first piston part, the bonding member and the second piston part.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: July 28, 2020
    Assignee: DONG YANG PISTON CO., LTD.
    Inventors: Jun-Kui Yang, Kwan-Ho Ryu, Jeong-Keun Lee, Ju-Hyun Sun, Sang-Bean Park, Jung-Hun Ji
  • Publication number: 20180161901
    Abstract: There is provided a method for manufacturing a piston for a vehicle engine, including: a piston assembling step of forming a piston assembly by assembling a first piston part, a bonding member and a second piston part, wherein the first piston part has two or more bonding surfaces separate from each other and extending in a circumferential direction, and the second piston part has two or more bonding surfaces separate from each other and extending in the circumferential direction; a piston diffusion brazing step of diffusion brazing the first piston part, the bonding member and the second piston part under an open atmosphere by heating the formed piston assembly; and a piston cooling step of cooling a piston unit formed by diffusion brazing the first piston part, the bonding member and the second piston part.
    Type: Application
    Filed: November 20, 2017
    Publication date: June 14, 2018
    Inventors: Jun-Kui YANG, Kwan-Ho RYU, Jeong-Keun LEE, Ju-Hyun SUN, Sang-Bean PARK, Jung-Hun JI
  • Publication number: 20180156156
    Abstract: There is provided a method for manufacturing a piston, including: a piston assembling step of forming a piston assembly by assembling a first piston part, a bonding member and a second piston part, wherein the first piston part has two or more bonding surfaces separate from each other and extending in a circumferential direction, and the second piston part has two or more bonding surfaces separate from each other and extending in the circumferential direction; a piston diffusion brazing step of diffusion brazing the first piston part, the bonding member and the second piston part under an open atmosphere by heating the formed piston assembly; and a piston cooling step of cooling a piston unit formed by diffusion brazing the first piston part, the bonding member and the second piston part.
    Type: Application
    Filed: November 20, 2017
    Publication date: June 7, 2018
    Inventors: Jun-Kui YANG, Kwan-Ho RYU, Jeong-Keun LEE, Ju-Hyun SUN, Sang-Bean PARK, Jung-Hun JI