Patents by Inventor Yooshin Cho
Yooshin 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).
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Patent number: 8225757Abstract: A continuously variable valve lift apparatus includes an input cam disposed to a camshaft and rotating, a follower supporting portion rotatably disposed to the camshaft for changing a relative angle of the follower with respect to the camshaft, a follower that includes a center shaft, is connected with the follower supporting portion via the center shaft, and pivots around the center shaft by receiving rotation movement of the input cam, a straight line guide, an output cam that contacts the follower and reciprocates along the straight line guide, and a valve opening unit that is opened by pushing of the output cam.Type: GrantFiled: November 20, 2008Date of Patent: July 24, 2012Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Back Sik Kim, Ingee Suh, Dong Hee Han, Yooshin Cho, Wootae Kim, Hyung Ick Kim, Myungsik Choi, Dae Sung Kim, Kyoung Pyo Ha
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Patent number: 8047177Abstract: A cylinder head having a plurality of integrally formed port-exhaust manifold assemblies therein, wherein the port-exhaust manifold assembly is integrally formed in the cylinder head by extending a plurality of exhaust port of an engine to function as an exhaust manifold and the plurality of the port-exhaust manifold assemblies is arranged in a triangle when each center portion of outlet portions thereof are connected.Type: GrantFiled: December 11, 2008Date of Patent: November 1, 2011Assignee: Hyundai Motor CompanyInventors: Jin Kook Kong, Sihun Lee, Wootae Kim, Yooshin Cho
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Patent number: 7971562Abstract: A continuous variable valve lift device includes a valve, which opens/closes a channel by means of reciprocation, a control shaft, which is mounted so as to be able to move toward or away from a reciprocation central axis of the valve, a pivotable shoe, which is pivotably coupled to the control shaft, includes a cam insertion part in a recess or through-hole shape and a slide face slidably contacting an end of the valve, and reciprocates the valve when pivoted, and a drive cam, which comes into contact with an inner wall of the cam insertion part, and pivots the pivotable shoe. Thereby, the continuous variable valve lift device can freely adjust a lift amount and a lift time of the valve without changing positions of the drive cam and camshaft, and thus be easily applied to an existing engine.Type: GrantFiled: September 5, 2008Date of Patent: July 5, 2011Assignee: Hyundai Motor CompanyInventors: Myungsik Choi, Kyoung Pyo Ha, Chun Woo Lee, Woo Tae Kim, Hyung Ick Kim, Yooshin Cho, Ingee Suh, Back Sik Kim, Dae Sung Kim, Dae Yoon Oh, Dong Hee Han
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Patent number: 7950362Abstract: A variable valve lift apparatus includes an input cam disposed to a input shaft, a valve opening unit, a control shaft parallel to the input shaft, an input link rotatably coupled to the control shaft and contacting the input cam, a control link connected with the input link and eccentrically connected to the control shaft, a connecting link connected with the control link, and a lift arm that is rotatably coupled to the control shaft, is connected with the connecting link, and drives the valve opening unit.Type: GrantFiled: November 21, 2008Date of Patent: May 31, 2011Assignee: Hyundai Motor CompanyInventors: Back Sik Kim, Ingee Suh, Dong Hee Han, Yooshin Cho, Wootae Kim, Chun Woo Lee, Hyung Ick Kim, Myungsik Choi, Dae Sung Kim, Kyoung Pyo Ha
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Publication number: 20090272345Abstract: A continuously variable valve lift apparatus includes an input cam disposed to a camshaft and rotating, a follower supporting portion rotatably disposed to the camshaft for changing a relative angle of the follower with respect to the camshaft, a follower that includes a center shaft, is connected with the follower supporting portion via the center shaft, and pivots around the center shaft by receiving rotation movement of the input cam, a straight line guide, an output cam that contacts the follower and reciprocates along the straight line guide, and a valve opening unit that is opened by pushing of the output cam.Type: ApplicationFiled: November 20, 2008Publication date: November 5, 2009Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Back Sik Kim, Ingee Suh, Dong Hee Han, Yooshin Cho, Wootae Kim, Hyung Ick Kim, Myungsik Choi, Dae Sung Kim, Kyoung Pyo HA
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Publication number: 20090255496Abstract: A continuous variable valve lift device includes a valve, which opens/closes a channel by means of reciprocation, a control shaft, which is mounted so as to be able to move toward or away from a reciprocation central axis of the valve, a pivotable shoe, which is pivotably coupled to the control shaft, includes a cam insertion part in a recess or through-hole shape and a slide face slidably contacting an end of the valve, and reciprocates the valve when pivoted, and a drive cam, which comes into contact with an inner wall of the cam insertion part, and pivots the pivotable shoe. Thereby, the continuous variable valve lift device can freely adjust a lift amount and a lift time of the valve without changing positions of the drive cam and camshaft, and thus be easily applied to an existing engine.Type: ApplicationFiled: September 5, 2008Publication date: October 15, 2009Applicant: Hyundai Motor CompanyInventors: Myungsik Choi, Kyoung Pyo Ha, Chun Woo Lee, Woo Tae Kim, Hyung Ick Kim, Yooshin Cho, Ingee Suh, Back Sik Kim, Dae Sung Kim, Dae Yoon Oh, Dong Hee Han
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Publication number: 20090241876Abstract: A variable valve lift apparatus includes an input cam disposed to a input shaft, a valve opening unit, a control shaft parallel to the input shaft, an input link rotatably coupled to the control shaft and contacting the input cam, a control link connected with the input link and eccentrically connected to the control shaft, a connecting link connected with the control link, and a lift arm that is rotatably coupled to the control shaft, is connected with the connecting link, and drives the valve opening unit.Type: ApplicationFiled: November 21, 2008Publication date: October 1, 2009Applicant: HYUNDAI MOTOR COMPANYInventors: BACK SIK KIM, Ingee Suh, Dong Hee Han, Yooshin Cho, Wootae Kim, Chun Woo Lee, Hyung Ick Kim, Myungsik Choi, Dae Sung Kim, Kyoung Pyo Ha
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Publication number: 20090151687Abstract: A cylinder head having a plurality of integrally formed port-exhaust manifold assemblies therein, wherein the port-exhaust manifold assembly is integrally formed in the cylinder head by extending a plurality of exhaust port of an engine to function as an exhaust manifold and the plurality of the port-exhaust manifold assemblies is arranged in a triangle when each center portion of outlet portions thereof are connected.Type: ApplicationFiled: December 11, 2008Publication date: June 18, 2009Applicant: Hyundai Motor CompanyInventors: Jin Kook KONG, Sihun Lee, Wootae Kim, Yooshin Cho