Patents by Inventor Jong-sik Byeon

Jong-sik Byeon 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).

  • Pinion valve body and pinion valve assembly for vehicle equipped with the same
    Patent number: 8307852
    Abstract: A pinion valve body and a vehicle pinion valve assembly with the valve body are disclosed. The pinion valve body has a lower sleeve integrally formed by a sintering process along with upper splines to block an oil leakage and thus there are no needs any more for the conventional separate lower sleeve as well as the associated machining of sleeve fitting areas on the valve body and the process of press-fitting such sleeve all together, thereby effectively reducing the general manufacturing steps and their cost.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: November 13, 2012
    Assignees: Mando Corporation, Halla Stackpole Corporation
    Inventors: Byung-yun Choi, Jong-sik Byeon, Geun-soo Choi, Byung-ki Moon, Ja-moon Ku, Ji-heon Choi
  • HYDRAULIC POWER STEERING APPARATUS
    Publication number: 20100155172
    Abstract: A hydraulic power steering apparatus for a vehicle is disclosed. The hydraulic power steering apparatus for a vehicle forms a working fluid film between a piston reciprocating within a cylinder tube and a piston ring in order to provide an accurate auxiliary steering force by preventing leakage of a working fluid between right and left cylinders during the operation of a steering wheel by the driver.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 24, 2010
    Applicant: MANDO CORPORATION
    Inventors: Sung-moo HEO, Byung-yun CHOI, Jong-sik BYEON, Hyoung-woo KIM, Heung-ju KIM
  • PINION VALVE BODY AND PINION VALVE ASSEMBLY FOR VEHICLE EQUIPPED WITH THE SAME
    Publication number: 20090308242
    Abstract: A pinion valve body and a vehicle pinion valve assembly with the valve body are disclosed. The pinion valve body has a lower sleeve integrally formed by a sintering process along with upper splines to block an oil leakage and thus there are no needs any more for the conventional separate lower sleeve as well as the associated machining of sleeve fitting areas on the valve body and the process of press-fitting such sleeve all together, thereby effectively reducing the general manufacturing steps and their cost.
    Type: Application
    Filed: June 15, 2009
    Publication date: December 17, 2009
    Applicants: MANDO CORPORATION, HALLA STACKPOLE CORPORATION
    Inventors: Byung-yun CHOI, Jong-sik BYEON, Geun-soo CHOI, Byung-ki MOON, Ja-moon KU, Ji-heon CHOI