Paving machine

Abstract

A paving machine is disclosed. The paving machine includes a hopper to receive a paving material and an auger to distribute the paving material on a work surface. A screed assembly levels the paving material distributed by the auger. The paving machine further includes a roller to compact the paving material leveled by the screed assembly and a rear traction device positioned downstream of the roller.

What is claimed is: 
     
         1 . A paving machine comprising:
 a hopper to receive a paving material;   an auger to distribute the paving material on a work surface;   a screed assembly to level the paving material distributed by the auger;   at least one roller to compact the paving material leveled by the screed assembly; and   a rear traction device positioned downstream of the roller.   
     
     
         2 . The paving machine of  claim 1 , wherein the roller is configured to selectively move between a compacting position for compacting the paving material on the work surface, and a storage position for storing the roller on the paving machine. 
     
     
         3 . The paving machine of  claim 2 , wherein the rear traction device is configured to selectively move between an engaged position for traction with the work surface and a disengaged position away from the work surface. 
     
     
         4 . The paving machine of  claim 3 , wherein the rear traction device is configured to move to the disengaged position when the roller is moved to the compacting position for compacting the paving material. 
     
     
         5 . The paving machine of  claim 3 , wherein the rear traction device is configured to move to the engaged position when the roller is moved to the storage position. 
     
     
         6 . The paving machine of  claim 1 , wherein the roller is coupled to a vibration assembly for compacting the paving material. 
     
     
         7 . The paving machine of  claim 1 , wherein the roller includes at least one main roller at least one extender roller. 
     
     
         8 . A paving machine comprising:
 a front portion and a rear portion;   a front traction device positioned at the front portion;   a hopper to hold a paving material before the paving material is distributed on a work surface;   a screed to level the paving material on the work surface;   a roller positioned downstream of the screed for compacting the paving material; and   a rear traction device positioned at the rear portion.   
     
     
         9 . The paving machine of  claim 8 , further comprising:
 a power source positioned on the rear portion.   
     
     
         10 . The paving machine of  claim 8 , further comprising:
 an operator station positioned on the front portion.   
     
     
         11 . The paving machine of  claim 8 , wherein the roller is configured to selectively move between a compacting position for compacting the paving material on the work surface, and a storage position for storing the roller away from the work surface. 
     
     
         12 . The paving machine of  claim 11 , wherein the rear traction device is configured to selectively move between an engaged position for traction with the work surface and a disengaged position away from the work surface. 
     
     
         13 . The paving machine of  claim 12 , wherein the rear traction device is configured to move to the disengaged position when the roller is moved to the compacting position for compacting the paving material. 
     
     
         14 . The paving machine of  claim 12 , wherein the rear traction device is configured to move to the engaged position when the roller is moved to the storage position. 
     
     
         15 . The paving machine of  claim 8 , wherein the roller is coupled to a vibration assembly for compacting the paving material. 
     
     
         16 . The paving machine of  claim 8 , wherein the roller includes at least one main roller and at least one extender roller 
     
     
         17 . A method of making a road by a paving machine, the method comprising:
 receiving a paving material in a hopper positioned at a front portion of the paving machine;   distributing the paving material on a work surface by an auger mounted on the paving machine;   leveling the paving material on the work surface by a screed mounted on the paving machine downstream of the auger;   compacting the paving material by a roller mounted on a rear portion of the paving machine downstream of the screed; and   storing the roller away from the work surface on the paving machine after compacting the paving material.   
     
     
         18 . The method of  claim 17 , further comprising:
 moving a rear traction device mounted on the rear portion of the paving machine to an engaged position for traction with the work surface.   
     
     
         19 . The method of  claim 18 , further comprising:
 moving the rear traction device to a disengaged position away from the work surface when the roller is compacting the paving material.   
     
     
         20 . The method of  claim 17 , further comprising:
 imparting a vibratory motion to the roller using a vibration assembly coupled to the roller.