Patents by Inventor Gwang Ryel KWON

Gwang Ryel KWON 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).

  • Rotary actuator
    Patent number: 10107313
    Abstract: A rotary actuator where a thrust bearing ring is positioned at an inside of a tube assembly accommodating oil, thereby reducing abrasion and damage caused by rolling friction and improving rotary power of an axle load by increasing hydraulic pressure of a piston. The rotary actuator includes the tube assembly, a piston, an axle load assembly, and a thrust bearing ring. The tube assembly is provided with a tube spiral portion where a spiral is formed at an inner circumference surface, and is formed of a first passage where oil flows into and out and a second passage spaced apart from the first passage by a fixed distance.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: October 23, 2018
    Assignee: SUNGJI HYDRAULICS CO., LTD.
    Inventors: Gwang Ryel Kwon, Gye Yong Song
  • ROTARY ACTUATOR
    Publication number: 20170350423
    Abstract: A rotary actuator where a thrust bearing ring is positioned at an inside of a tube assembly accommodating oil, thereby reducing abrasion and damage caused by rolling friction and improving rotary power of an axle load by increasing hydraulic pressure of a piston. The rotary actuator includes the tube assembly, a piston, an axle load assembly, and a thrust bearing ring. The tube assembly is provided with a tube spiral portion where a spiral is formed at an inner circumference surface, and is formed of a first passage where oil flows into and out and a second passage spaced apart from the first passage by a fixed distance.
    Type: Application
    Filed: March 3, 2016
    Publication date: December 7, 2017
    Applicant: SUNGJI HYDRAULICS CO., LTD.
    Inventors: Gwang Ryel KWON, Gye Yong SONG