Patents Assigned to LIGCHINE INTERNATIONAL CORPORATION
  • Patent number: 11946208
    Abstract: An apparatus for screeding concrete to produce a level finished surface includes a frame assembly having a front end and rear ends and a pair of spaced vertically oriented stabilization legs supporting a generally horizontal front member. An extendable boom assembly is provided having front and rear ends, and an exterior boom section pivotably secured to the frame assembly proximate said rear end. The extendable boom assembly is also adjustably mounted on said front member to allow generally lateral motion of the boom.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: April 2, 2024
    Assignee: Ligchine International Corporation
    Inventor: Peter A. Ligman
  • Publication number: 20240076838
    Abstract: An aggregate spreading device includes a hopper, a conveyor system disposed below the hopper, and a spreader system extending from at least one side of the aggregate spreading device and configured to receive aggregate from the conveyor system. The spreader system includes a vertical support coupled to a frame of the aggregate spreading device, a first wall extending from a first end attached to the vertical support, and a second wall extending from a second end of the first wall. A lift actuator is configured to adjust the vertical placement of the spreader system and causing the first and second walls to move vertically.
    Type: Application
    Filed: November 14, 2023
    Publication date: March 7, 2024
    Applicant: Ligchine International Corporation
    Inventors: Devin Wolf, Devery G. Beal, Michael Schutte
  • Patent number: 11885078
    Abstract: An apparatus for steering and driving a concrete screed having a frame and a screed head secured thereto includes a plurality of spaced drive wheels rotatably and pivotably secured to the frame at a plurality of points, and a steering member coupled to one or more of the drive wheels for controlling the directional orientation thereof.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: January 30, 2024
    Assignee: Ligchine International Corporation
    Inventors: Peter A. Ligman, Gary Ligman
  • Patent number: 11788304
    Abstract: An apparatus for leveling a concrete screed having a frame and a screed head secured thereto includes a plurality of vertically adjustable leveling legs driven by a plurality of electrical actuators responsive to a command supplied by a user interface.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: October 17, 2023
    Assignee: Ligchine International Corporation
    Inventors: Peter A. Ligman, Gary Ligman
  • Patent number: 11560727
    Abstract: An apparatus for screeding concrete to produce a level finished surface includes a frame assembly having an integral screed head having at least one member for contacting said concrete, a leveling assembly secured to the frame assembly having a plurality of vertically adjustable leveling legs capable of extension and retraction and a plurality of wheels secured to the leveling legs, each capable of rotation around a vertical axis for steering.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: January 24, 2023
    Assignee: Ligchine International Corporation
    Inventors: Peter A. Ligman, Gary Ligman
  • Patent number: 11162232
    Abstract: An apparatus for steering and driving a concrete screed having a frame and a screed head secured thereto includes a plurality of spaced drive wheels rotatably and pivotably secured to the frame at a plurality of points, and a steering member coupled to one or more of the drive wheels for controlling the directional orientation thereof.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: November 2, 2021
    Assignee: Ligchine International Corporation
    Inventors: Peter A. Ligman, Gary Ligman
  • Patent number: 10233658
    Abstract: A multi-rotational concrete screed to produce a level finished surface that includes a frame assembly, a boom assembly secured to the frame assembly at a first end and to a screed head at a second end, and a drive assembly. A powered turntable is positioned between the frame assembly and drive assembly permitting complete rotation of each with respect to the other.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: March 19, 2019
    Assignee: Ligchine International Corporation
    Inventor: Peter A. Ligman
  • Patent number: 9909267
    Abstract: This application is for an improved paver head for smoothing and finishing poured concrete surfaces. It includes a strike-off plow for initial leveling of concrete, an auger for mixing and smoothing surface imperfections, a roller for smoothing and leveling, and a finish blade for final surface finishing of a poured concrete surface.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: March 6, 2018
    Assignee: Ligchine International Corporation
    Inventor: Peter A. Ligman
  • Patent number: 9708780
    Abstract: An apparatus for screeding concrete to produce a level finished surface that includes a frame assembly, a boom assembly secured to the frame assembly at a first end and to a screed head at a second end, and a track drive assembly having a pair of driven tracks spaced from at least one wheel, the tracks and the wheels each rotatably secured to the rigid frame assembly.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: July 18, 2017
    Assignee: LIGCHINE INTERNATIONAL CORPORATION
    Inventor: Peter A. Ligman
  • Patent number: 9404272
    Abstract: An apparatus for screeding concrete to produce a level finished surface that includes a frame assembly, a boom assembly secured to the frame assembly at a first end and to a screed head at a second end, and a track drive assembly having a pair of driven tracks spaced from at least one wheel, the tracks and the wheels each rotatably secured to the rigid frame assembly.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 2, 2016
    Assignee: LIGCHINE INTERNATIONAL CORPORATION
    Inventor: Peter A. Ligman