Patents by Inventor Sunghyeok Kim

Sunghyeok Kim 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).

  • Variable valve timing apparatus
    Patent number: 9200574
    Abstract: A variable valve timing apparatus including: an actuator housing having a space at the inside thereof; an upper plunger mounted inside the upper portion of the actuator housing to move upward and downward; a lower plunger mounted inside the lower portion of the actuator housing to allow the upper plunger to move upward and downward; an oil chamber allows oil to be circulated upwardly and downwardly or blocks the flow of oil through a head formed on the top end periphery of the upper plunger in accordance with the upward and downward movements of the upper plunger; and a communicating passage allows the upper and lower end portions of the oil chamber to communicate with each other in accordance with upward and downward movements of the lower plunger and to adjust the oil flowing thereon to control the speeds of the upward and downward movements of the upper plunger.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: December 1, 2015
    Assignee: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventors: Seho Kim, Dongyeon Kim, Sunghyeok Kim, Hunsuk Kim
  • VARIABLE VALVE TIMING APPARATUS
    Publication number: 20140109849
    Abstract: A variable valve timing apparatus including: an actuator housing having a space at the inside thereof; an upper plunger mounted inside the upper portion of the actuator housing to move upward and downward; a lower plunger mounted inside the lower portion of the actuator housing to allow the upper plunger to move upward and downward; an oil chamber allows oil to be circulated upwardly and downwardly or blocks the flow of oil through a head formed on the top end periphery of the upper plunger in accordance with the upward and downward movements of the upper plunger; and a communicating passage allows the upper and lower end portions of the oil chamber to communicate with each other in accordance with upward and downward movements of the lower plunger and to adjust the oil flowing thereon to control the speeds of the upward and downward movements of the upper plunger.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Inventors: Seho Kim, Dongyeon Kim, Sunghyeok Kim, Hunsuk Kim