Drywall mud hopper for inside and outside corners

Abstract

A drywall hopper assembly that contains a double blade that can apply drywall mud to both interior and exterior drywall corners with no blade change. A zigzag blade can contain two grooves, one for interior corners and one for exterior corners. With this blade arrangement, an operator can quickly move from one type of corner to another without using multiple tools, multiple blades or hand application methods to apply mud. The present invention can contain a pliable release port to present mud equally to an interior or an exterior corner. There can be such a port on both the top and bottom of the blade so that mud is smoothly applied as trim moves through the hopper or the hopper is moved along the trim.

1 . A mud dispensing hopper for applying mud to both exterior and interior drywall corner trim comprising: 
 a hopper body for holding a reservoir of wet mud;    a mud outlet opening in said hopper wherein wet mud can pass through said opening;    a zigzag blade attached to said hopper body in proximity to said mud outlet opening, wherein said zigzag blade contains a convex part and a concave part, and wherein said convex part applies mud to trim for interior corners and said concave part applies mud to trim for exterior corners;    at least one control plate in proximity to said mud outlet opening and said zigzag blade, said control plate controlling flow of said mud.    
   
   
       2 . The mud dispensing hopper of  claim 1  further comprising a dispensing port mounted in proximity to said control plate.  
   
   
       3 . The mud dispensing hopper of  claim 2  wherein said dispensing port has teeth to control mud flow.  
   
   
       4 . The mud dispensing hopper of  claim 1  wherein said control plate is metal.  
   
   
       5 . The mud dispensing hopper of  claim 1  wherein said control plate is plastic.  
   
   
       6 . The mud dispensing hopper of  claim 2  wherein said dispensing port is plastic.  
   
   
       7 . The mud dispensing hopper of  claim 1  wherein said zigzag blade is removable.  
   
   
       8 . A mud hopper for use in drywall finishing work where mud is applied to trim for both interior and exterior drywall corners, the mud hopper being filed with wet mud from the top and dispensing the wet mud from the bottom through a mud dispensing port, the mud hopper comprising a zigzag blade mounted in proximity to the bottom of the mud hopper so that wet mud flows out of the hopper and along the blade and onto a piece of drywall corner trim, flow of wet mud being controlled by at least one control plate mounted in proximity to the zigzag blade in a position to control rate of flow of the mud, the control plate being adjustable to allow different mud flow rates, the control plate being shaped to approximately match the contour of the zigzag blade, and wherein said zigzag blade contains a convex part and a concave part, wherein said convex part applies mud for interior corner trim and said concave part applies mud for exterior corner trim.  
   
   
       9 . The mud hopper of  claim 8  further comprising a dispensing port behind the control plate to better control the dispensing of the mud.  
   
   
       10 . The mud hopper of  claim 8  wherein the control plate and zigzag blade are made of metal.  
   
   
       11 . The mud hopper of  claim 9  wherein the dispensing port is made of plastic.  
   
   
       12 . The mud hopper of  claim 9  wherein said dispensing port contains a plurality of teeth.  
   
   
       13 . A method of dispensing drywall mud to both interior and exterior corner trim comprising the steps of: 
 loading a hopper body with wet mud;    loading drywall trim into said hopper;    allowing said wet mud to exit said hopper body along a zigzag blade adapted for both interior and exterior drywall trim;    controlling flow of said wet mud with a control plate mounted in proximity to said hopper body and said zigzag blade, said control plate being adjustable to control mud flow rate onto said trim.    
   
   
       14 . The method of  claim 13  wherein said control plate and said zigzag blade is made of steel.  
   
   
       15 . The method of  claim 13  wherein said dispensing plate has teeth on a surface exposed to said flow of wet mud.  
   
   
       16 . The method of  claim 15  wherein said teeth are made of fibrous material.  
   
   
       17 . The method of  claim 13  wherein said dispensing plate is made of plastic.