Patents by Inventor Sae Bin Um

Sae Bin Um 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).

  • Linear actuator having free fall function
    Patent number: 11015687
    Abstract: A linear actuator having a free fall function. The linear actuator moves a piston-rod member back and forth using torque of a rotary motor. Here, the piston-rod member is disposed within a portion of a cylinder body to be movable back and forth. In the event of jamming in which the piston-rod member is stopped due to sticking between an operating nut and a screw member, the piston-rod member is caused to freely fall in a direction in which load is applied. This can consequently obtain the maximum stretched length of the piston-rod member, thereby providing safety in an emergency.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 25, 2021
    Assignee: HANWHA AEROSPACE CO., LTD.
    Inventors: Tae Ju Kim, Sae Bin Um, Eun Soo Kim, Sang Joon Park
  • LINEAR ACTUATOR HAVING FREE FALL FUNCTION
    Publication number: 20190277379
    Abstract: A linear actuator having a free fall function. The linear actuator moves a piston-rod member back and forth using torque of a rotary motor. Here, the piston-rod member is disposed within a portion of a cylinder body to be movable back and forth. In the event of jamming in which the piston-rod member is stopped due to sticking between an operating nut and a screw member, the piston-rod member is caused to freely fall in a direction in which load is applied. This can consequently obtain the maximum stretched length of the piston-rod member, thereby providing safety in an emergency.
    Type: Application
    Filed: September 8, 2017
    Publication date: September 12, 2019
    Applicant: HANWHA AEROSPACE CO., LTD.
    Inventors: Tae Ju Kim, Sae Bin Um, Eun Soo Kim, Sang Joon Park