Patents Assigned to LIGCHINE INTERNATIONAL CORPORATION
-
Patent number: 11946208Abstract: 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: GrantFiled: May 24, 2023Date of Patent: April 2, 2024Assignee: Ligchine International CorporationInventor: Peter A. Ligman
-
Publication number: 20240076838Abstract: 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: ApplicationFiled: November 14, 2023Publication date: March 7, 2024Applicant: Ligchine International CorporationInventors: Devin Wolf, Devery G. Beal, Michael Schutte
-
Patent number: 11885078Abstract: 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: GrantFiled: November 1, 2021Date of Patent: January 30, 2024Assignee: Ligchine International CorporationInventors: Peter A. Ligman, Gary Ligman
-
Patent number: 11788304Abstract: 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: GrantFiled: September 10, 2019Date of Patent: October 17, 2023Assignee: Ligchine International CorporationInventors: Peter A. Ligman, Gary Ligman
-
Patent number: 11560727Abstract: 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: GrantFiled: August 26, 2019Date of Patent: January 24, 2023Assignee: Ligchine International CorporationInventors: Peter A. Ligman, Gary Ligman
-
Patent number: 11162232Abstract: 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: GrantFiled: September 6, 2019Date of Patent: November 2, 2021Assignee: Ligchine International CorporationInventors: Peter A. Ligman, Gary Ligman
-
Patent number: 10233658Abstract: 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: GrantFiled: October 16, 2017Date of Patent: March 19, 2019Assignee: Ligchine International CorporationInventor: Peter A. Ligman
-
Patent number: 9909267Abstract: 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: GrantFiled: March 5, 2015Date of Patent: March 6, 2018Assignee: Ligchine International CorporationInventor: Peter A. Ligman
-
Patent number: 9708780Abstract: 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: GrantFiled: August 2, 2016Date of Patent: July 18, 2017Assignee: LIGCHINE INTERNATIONAL CORPORATIONInventor: Peter A. Ligman
-
Patent number: 9404272Abstract: 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: GrantFiled: February 19, 2016Date of Patent: August 2, 2016Assignee: LIGCHINE INTERNATIONAL CORPORATIONInventor: Peter A. Ligman