Patents by Inventor Chang Hak YOO

Chang Hak YOO 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).

  • VEHICLE WHEEL HAVING ADJUSTABLE INSERT NECK AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20240123760
    Abstract: A method for manufacturing a vehicle wheel includes: a casting process of manufacturing the wheel in a one-piece body having a forming end and a temporary flange protruding at inner and outer sides of the wheel, respectively, wherein the one-piece body further includes a resonance chamber forming groove; a primary shape machining process of forming a stepped part at an outer circumferential side of the resonance chamber forming groove; a flow forming process of bending the forming end to be seated on the stepped part; a friction stir welding process of integrally bonding a portion where the forming end and the stepped part are in close contact with each other; a fine machining process of removing the temporary flange; and a sound-absorbing hole machining process of forming a sound-absorbing hole for communicating between the resonance chamber and an interior space of a tire in the forming end.
    Type: Application
    Filed: December 26, 2023
    Publication date: April 18, 2024
    Applicants: Hyundai Motor Company, KIA CORPORATION, Hyundai Sungwoo Casting Co., Ltd.
    Inventors: Jun Min LEE, Young Chan KIM, Min Soo KIM, Young Rae JO, Young Il KIM, Sang Bum PARK, Chang Hak YOO
  • Vehicle wheel having adjustable insert neck and method for manufacturing the same
    Patent number: 11897285
    Abstract: A method for manufacturing a vehicle wheel includes: a casting process of manufacturing the wheel in a one-piece body having a forming end and a temporary flange protruding at inner and outer sides of the wheel, respectively, wherein the one-piece body further includes a resonance chamber forming groove; a primary shape machining process of forming a stepped part at an outer circumferential side of the resonance chamber forming groove; a flow forming process of bending the forming end to be seated on the stepped part; a friction stir welding process of integrally bonding a portion where the forming end and the stepped part are in close contact with each other; a fine machining process of removing the temporary flange; and a sound-absorbing hole machining process of forming a sound-absorbing hole for communicating between the resonance chamber and an interior space of a tire in the forming end.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: February 13, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Hyundai Sungwoo Casting Co., Ltd.
    Inventors: Jun Min Lee, Young Chan Kim, Min Soo Kim, Young Rae Jo, Young Il Kim, Sang Bum Park, Chang Hak Yoo
  • VEHICLE WHEEL HAVING ADJUSTABLE INSERT NECK AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20210370715
    Abstract: A method for manufacturing a vehicle wheel includes: a casting process of manufacturing the wheel in a one-piece body having a forming end and a temporary flange protruding at inner and outer sides of the wheel, respectively, wherein the one-piece body further includes a resonance chamber forming groove; a primary shape machining process of forming a stepped part at an outer circumferential side of the resonance chamber forming groove; a flow forming process of bending the forming end to be seated on the stepped part; a friction stir welding process of integrally bonding a portion where the forming end and the stepped part are in close contact with each other; a fine machining process of removing the temporary flange; and a sound-absorbing hole machining process of forming a sound-absorbing hole for communicating between the resonance chamber and an interior space of a tire in the forming end.
    Type: Application
    Filed: September 30, 2020
    Publication date: December 2, 2021
    Inventors: Jun Min LEE, Young Chan KIM, Min Soo KIM, Young Rae JO, Young Il KIM, Sang Bum PARK, Chang Hak YOO