Patents by Inventor Sangryu LEE

Sangryu LEE 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).

  • Amplitude setting detection for vibratory surface compactor
    Patent number: 12674286
    Abstract: A vibratory compaction machine includes a chassis, at least one drum, and a control system. The at least one drum is rotatable about an axis that faces in a Y-axial direction and is mounted to the chassis to allow rotation of the drum over a work surface. The at least one vibration mechanism is configured to generate vibrations that are transmitted as impacts directed in a Z-axial direction by the at least one drum to the work surface. The at least one vibration mechanism is provided with a plurality of different amplitude settings. The control system is configured to measure acceleration forces of the at least one drum in a direction that substantially corresponds to an X-axial direction, wherein the acceleration forces are generated by the vibration mechanism and the X-axial direction extends in a direction that is substantially orthogonal to the Y-axial direction and the Z-axial direction.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: July 7, 2026
    Assignee: Volvo Construction Equipment AB
    Inventors: Scott Keller, Sangryu Lee
  • AMPLITUDE SETTING DETECTION FOR VIBRATORY SURFACE COMPACTOR
    Publication number: 20230392325
    Abstract: A vibratory compaction machine includes a chassis, at least one drum, and a control system. The at least one drum is rotatable about an axis that faces in a Y-axial direction and is mounted to the chassis to allow rotation of the drum over a work surface. The at least one vibration mechanism is configured to generate vibrations that are transmitted as impacts directed in a Z-axial direction by the at least one drum to the work surface. The at least one vibration mechanism is provided with a plurality of different amplitude settings. The control system is configured to measure acceleration forces of the at least one drum in a direction that substantially corresponds to an X-axial direction, wherein the acceleration forces are generated by the vibration mechanism and the X-axial direction extends in a direction that is substantially orthogonal to the Y-axial direction and the Z-axial direction.
    Type: Application
    Filed: October 13, 2021
    Publication date: December 7, 2023
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Scott KELLER, Sangryu LEE