Wide Swath Offset Concrete Screed

Abstract

Methods and systems for making and using a wide swath offset concrete screed apparatus for screeding wet concrete slurry. The apparatus includes a cross support bar, an attachment mechanism for attaching the cross support bar to a liftable arm of a motorized vehicle, and lateral support bars for attaching a screed bar to the cross support bar. The screed bar is positioned offset from the motorized vehicle used to operate the screed, allowing the motorized vehicle to drive outside the forms.

What is claimed is: 
     
         1 . An offset concrete screed apparatus configured for attachment to a motorized vehicle to screed wet concrete slurry, comprising:
 a cross support bar;   a connection mechanism configured to attach the cross support bar of the offset concrete screed apparatus to a liftable arm of the motorized vehicle; and   a screed bar attached to the offset concrete screed apparatus;   wherein the screed bar is positioned offset from the motorized vehicle, allowing the motorized vehicle to be driven outside forms containing the wet concrete slurry during the screeding.   
     
     
         2 . The offset concrete screed apparatus of  claim 1 , wherein the cross support bar has a rectangular cross-section. 
     
     
         3 . The offset concrete screed apparatus of  claim 2 , further comprising:
 one or more support bar sleeves attached to the cross support bar;   one or more vertical support bars each of which passes through a respective one of the one or more support bar sleeves;   wherein the screed bar is attached to said one or more vertical support bars.   
     
     
         4 . The offset concrete screed apparatus of  claim 3 , wherein each of the one or more vertical support bars is configured move up and down relative to the respective one of the one or more support bar sleeves through which it passes. 
     
     
         5 . The offset concrete screed apparatus of  claim 1 , wherein each of the one of the one or more support bar sleeves is rotatively attached to the to the cross support bar. 
     
     
         6 . The offset concrete screed apparatus of  claim 5 , wherein each of the one or more vertical support bars is rotatively attached to the screed bar. 
     
     
         7 . The offset concrete screed apparatus of  claim 6 , further comprising: bearings positioned on the inner surface of each of the one or more support bar sleeves making it easier for the one or more vertical support bars to move up and down. 
     
     
         8 . The offset concrete screed apparatus of  claim 3 , further comprising:
 a vibrating float assembly configured to be pulled behind a screed bar for smoothing wet concrete slurry.   
     
     
         9 . The offset concrete screed apparatus of  claim 8 , further comprising:
 one or more float pans configured as part of the vibrating float assembly   
     
     
         10 . The offset concrete screed apparatus of  claim 9 , wherein each of the one or more float pans has a bent lip portion extending its respective length. 
     
     
         11 . The offset concrete screed apparatus of  claim 10 , further comprising:
 one or more mechanisms to connect each of the one or more float pans to the screed bar.   
     
     
         12 . The offset concrete screed apparatus of  claim 11 , further comprising:
 a vibrating electric motor positioned upon each of the one or more float pans wherein the screed bar is configured to be transversely offset from the motorized vehicle such that the motorized vehicle can be driven outside forms containing the concrete slurry while screeding.