Patents by Inventor In-Cheol YOO

In-Cheol 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).

  • Patent number: 10760526
    Abstract: Provided is a piston for an internal combustion engine. The piston includes a body including, at an upper part of the body, a crown including a combustion chamber where fuel is burnt and including, at a lower part of the body, a piston pin boss into which a piston pin is inserted and a skirt corresponding to a cylinder wall, and a cooling channel including a refrigerant channel, a refrigerant inlet provided at a side of the refrigerant channel, and a refrigerant outlet provided at the other side of the refrigerant channel, wherein a cross section of the cooling channel has an overall elliptic shape to reduce stress occurring at an upper side of the cooling channel when the fuel is burnt in the internal combustion engine, and at least one of arcs of the ellipse is configured as a first elliptical arc of a quadratic curve.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: September 1, 2020
    Assignee: DONG YANG PISTON CO., LTD.
    Inventors: Jun Kui Yang, Kwan Ho Ryu, Sang Hyuk Jun, Woo Seok Shim, In Cheol Yoo, Jang Ik Park
  • Publication number: 20190218997
    Abstract: Provided is a piston for an internal combustion engine. The piston includes a body including, at an upper part of the body, a crown including a combustion chamber where fuel is burnt and including, at a lower part of the body, a piston pin boss into which a piston pin is inserted and a skirt corresponding to a cylinder wall, and a cooling channel including a refrigerant channel, a refrigerant inlet provided at a side of the refrigerant channel, and a refrigerant outlet provided at the other side of the refrigerant channel, wherein a cross section of the cooling channel has an overall elliptic shape to reduce stress occurring at an upper side of the cooling channel when the fuel is burnt in the internal combustion engine, and at least one of arcs of the ellipse is configured as a first elliptical arc of a quadratic curve.
    Type: Application
    Filed: January 11, 2019
    Publication date: July 18, 2019
    Inventors: Jun Kui YANG, Kwan Ho RYU, Sang Hyuk JUN, Woo Seok SHIM, In Cheol YOO, Jang Ik PARK
  • Patent number: 10100777
    Abstract: Provided is a piston for an internal combustion engine, the piston including a body having a piston pin boss for inserting a piston pin thereinto, and a skirt corresponding to a cylinder wall, and a cooling channel provided in the body to allow a refrigerant for cooling the body, to flow therethrough, and having a ring shape including a first channel provided from a refrigerant inlet to a refrigerant outlet along a first outer circumferential direction of the body, and a second channel provided from the refrigerant inlet to the refrigerant outlet along a second outer circumferential direction of the body.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: October 16, 2018
    Assignee: DONG YANG PISTON CO., LTD.
    Inventors: In Cheol Yoo, Woo Seok Shim, Sang Hyuk Jun, Jeong Keon Lee, Kwan Ho Ryu, Jun Kui Yang
  • Publication number: 20170314504
    Abstract: Provided is a piston for an internal combustion engine, the piston including a body having a piston pin boss for inserting a piston pin thereinto, and a skirt corresponding to a cylinder wall, and a cooling channel provided in the body to allow a refrigerant for cooling the body, to flow therethrough, and having a ring shape including a first channel provided from a refrigerant inlet to a refrigerant outlet along a first outer circumferential direction of the body, and a second channel provided from the refrigerant inlet to the refrigerant outlet along a second outer circumferential direction of the body.
    Type: Application
    Filed: May 25, 2016
    Publication date: November 2, 2017
    Inventors: In Cheol YOO, Woo Seok SHIM, Sang Hyuk JUN, Jeong Keon LEE, Kwan Ho RYU, Jun Kui YANG
  • Patent number: 9328823
    Abstract: The present invention provides a steel piston having cooling channel without flash, including an upper piston part having a circle shape outer wall and an inner wall formed inward from the outer wall with a desired distance, and a lower piston part having a circle shape outer wall and an inner wall formed inward from the outer wall with a desired distance on the place corresponding each other when they are coupled, in which one or more concave grooves are formed on the outer wall of the upper piston part, and two concave grooves are formed on the inner wall of the upper piston part, and the inner circumference surface of the upper end of the outer wall of the lower piston part is carved as much as a desired depth, and therefore, a stepped portion is formed between the inner and the outer circumference surfaces, and the inner and outer circumference surfaces of the upper end of the inner wall of the lower piston part are carved as much as a desired depth, and a protrusion is formed at the middle of the upper e
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: May 3, 2016
    Assignee: Dong Yang Piston Co., Ltd.
    Inventors: Jun-Kui Yang, Kwan-Ho Ryu, Jeong-Keun Lee, Sang-Bean Park, In-Cheol Yoo
  • Publication number: 20150007717
    Abstract: The present invention provides a steel piston having cooling channel without flash, including an upper piston part having a circle shape outer wall and an inner wall formed inward from the outer wall with a desired distance, and a lower piston part having a circle shape outer wall and an inner wall formed inward from the outer wall with a desired distance on the place corresponding each other when they are coupled, in which one or more concave grooves are formed on the outer wall of the upper piston part, and two concave grooves are formed on the inner wall of the upper piston part, and the inner circumference surface of the upper end of the outer wall of the lower piston part is carved as much as a desired depth, and therefore, a stepped portion is formed between the inner and the outer circumference surfaces, and the inner and outer circumference surfaces of the upper end of the inner wall of the lower piston part are carved as much as a desired depth, and a protrusion is formed at the middle of the upper e
    Type: Application
    Filed: December 31, 2013
    Publication date: January 8, 2015
    Applicant: DONG YANG PISTON CO., LTD.
    Inventors: Jun-Kui YANG, Kwan-Ho RYU, Jeong-Keun LEE, Sang-Bean PARK, In-Cheol YOO