Patents by Inventor Sung-moo Heo

Sung-moo Heo 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: 8465034
    Abstract: Disclosed is a rack bar supporting device of a rack and pinion type steering apparatus for a vehicle. The disclosed device can prevent free movement from increasing by automatically adjusting a predetermined free movement even when wear occurs in a support yoke after degradation of driving durability of the vehicle, and can prevent a noise from occurring caused by an increase of free movement when the support yoke collides with a yoke plug by an impact reversely input from an uneven road surface, etc. This can provide a comfortable steering feeling to the driver.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: June 18, 2013
    Assignee: Mando Corporation
    Inventor: Sung-moo Heo
  • Patent number: 8429991
    Abstract: Disclosed is a rack bush and a rack pinion type steering apparatus having the rack bush for a vehicle, which can smoothly support a load in an axial direction and a vertical direction of a rack bar so that it is possible to reduce abnormal abrasion of the rack bush, reduce a rattle noise caused by external force transferred through the rack bar during movement of the rack bar, and prevent damage to the rack bar and a pinion through distribution of the load due to an external impact on the shaft.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: April 30, 2013
    Assignee: Mando Corporation
    Inventors: Heung-ju Kim, Sung-moo Heo, Byung-yun Choi
  • Publication number: 20110193331
    Abstract: Disclosed is a rack bar supporting device of a rack and pinion type steering apparatus for a vehicle. The disclosed device can prevent free movement from increasing by automatically adjusting a predetermined free movement even when wear occurs in a support yoke after degradation of driving durability of the vehicle, and can prevent a noise from occurring caused by an increase of free movement when the support yoke collides with a yoke plug by an impact reversely input from an uneven road surface, etc. This can provide a comfortable steering feeling to the driver.
    Type: Application
    Filed: February 7, 2011
    Publication date: August 11, 2011
    Inventor: Sung-Moo HEO
  • Publication number: 20100251839
    Abstract: Disclosed is a rack bush and a rack pinion type steering apparatus having the rack bush for a vehicle, which can smoothly support a load in an axial direction and a vertical direction of a rack bar so that it is possible to reduce abnormal abrasion of the rack bush, reduce a rattle noise caused by external force transferred through the rack bar during movement of the rack bar, and prevent damage to the rack bar and a pinion through distribution of the load due to an external impact on the shaft.
    Type: Application
    Filed: April 2, 2010
    Publication date: October 7, 2010
    Inventors: Heung-Ju KIM, Sung-moo Heo, Byung-yun Choi
  • 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
  • Patent number: 7654166
    Abstract: Apparatus for automatically adjusting yoke clearance in a steering device in a rack-pinion type steering device.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: February 2, 2010
    Assignee: Mando Corporation
    Inventor: Sung-moo Heo
  • Publication number: 20080202271
    Abstract: Apparatus for automatically adjusting yoke clearance in a steering device in a rack-pinion type steering device.
    Type: Application
    Filed: February 14, 2008
    Publication date: August 28, 2008
    Inventor: Sung-moo Heo
  • Publication number: 20070262530
    Abstract: Disclosed is a sealing part structure of a cylinder tube disposed in a hydraulic power steering apparatus. The sealing part structure includes an oil seal for preventing leakage of power steering oil; a DU bushing for guiding a reciprocal movement of a rack bar in a leftward and rightward direction; a rack bush for absorbing a shock from a piston disposed in the rack bar; a stop ring for fixing the rack bush to a cylinder tube. According to the present invention, the number of parts is reduced, thereby simplifying an assembling process as well as reducing a manufacturing cost thereof so as to improve productivity.
    Type: Application
    Filed: April 13, 2007
    Publication date: November 15, 2007
    Applicant: Mando Corporation
    Inventor: Sung Moo Heo