Patents by Inventor Peter A. Ligman

Peter A. Ligman 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).

  • Swing boom concrete screeding apparatus
    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
  • Drive system for screeding concrete
    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
  • Electronically actuated leveling system for screeding concrete
    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
  • Swing Boom Concrete Screeding Apparatus
    Publication number: 20230295884
    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: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Inventor: Peter A. Ligman
  • Electronically Actuated Leveling System for Screeding Concrete
    Publication number: 20230279680
    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: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Inventors: Peter A. Ligman, Gary Ligman
  • Portable Telescopic Conveyor Belt
    Publication number: 20230126101
    Abstract: A portable telescopic conveyor apparatus includes a mounting frame for securing the conveyor to a mobile platform, a boom frame housing a plurality of extendable conveyor sections, and a pair of opposed outriggers for stabilizing the conveyor apparatus when in use.
    Type: Application
    Filed: October 25, 2022
    Publication date: April 27, 2023
    Inventors: Peter A. Ligman, Bradley Alan Davis, Carey A. Zielinski
  • Apparatus for screeding concrete
    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
  • Swing Boom Concrete Screeding Apparatus
    Publication number: 20220267967
    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: Application
    Filed: February 23, 2022
    Publication date: August 25, 2022
    Inventor: Peter A. Ligman
  • Side-Step Concrete Screeding Apparatus
    Publication number: 20220162814
    Abstract: An apparatus for screeding concrete to produce a level finished surface includes a frame assembly having a pair of spaced vertically oriented stabilization legs secured to the front end thereof supporting a generally horizontal front member. An extendable boom assembly is secured to said frame assembly at a first end and to a screed head at a second end. A side-step assembly includes an actuator with an extendable arm secured to said boom assembly to impart generally lateral motion.
    Type: Application
    Filed: June 28, 2021
    Publication date: May 26, 2022
    Inventor: Peter A. Ligman
  • Drive System for Screeding Concrete
    Publication number: 20220049436
    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: Application
    Filed: November 1, 2021
    Publication date: February 17, 2022
    Inventors: Peter A. Ligman, Gary Ligman
  • Drive system for screeding concrete
    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
  • Electronically Actuated Leveling System for Screeding Concrete
    Publication number: 20200109526
    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: Application
    Filed: September 10, 2019
    Publication date: April 9, 2020
    Inventors: Peter A. Ligman, Gary Ligman
  • APPARATUS FOR SCREEDING CONCRETE
    Publication number: 20200109573
    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: Application
    Filed: August 26, 2019
    Publication date: April 9, 2020
    Inventors: Peter A. Ligman, Gary Ligman
  • Drive for Apparatus for Screeding Concrete
    Publication number: 20200109525
    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: Application
    Filed: September 6, 2019
    Publication date: April 9, 2020
    Inventors: Peter A. Ligman, Gary Ligman
  • Multi-rotational concrete screed apparatus for screeding concrete
    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
  • Paver head assembly
    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
  • Track drive apparatus for screeding concrete
    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
  • Track drive apparatus for screeding concrete
    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
  • Track drive apparatus for screeding concrete
    Patent number: 9297171
    Abstract: The present invention is 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: January 20, 2015
    Date of Patent: March 29, 2016
    Inventor: Peter A. Ligman
  • Apparatus for screeding concrete
    Patent number: 8152409
    Abstract: An apparatus for screeding concrete to produce a level finished surface includes a rigid frame assembly; a telescopic boom assembly secured directly to the frame assembly; and a screeder head assembly having a plurality of vertically oriented alignment poles secured to the boom assembly. The telescopic boom assembly may include a plurality of boom sections, each having a leveling mechanism whereby each boom section may be individually leveled with respect to each preceding boom section to provide for a consistently level finished surface.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: April 10, 2012
    Inventor: Peter A. Ligman