Rabbet joint with a curved surface

Abstract

A rabbeted edge of a building or construction piece includes a curved surface with a radius in a rabbet joint to provide improved mechanical strength and resist damage and breaking.

What is claimed is: 
     
         1 . A building or construction piece comprising:
 at least one rabbet joint including a shoulder and cheek; and   a curved surface having a radius in the rabbet joint.   
     
     
         2 . The piece of  claim 1  further comprising polyvinyl chloride. 
     
     
         3 . The piece of  claim 2 , further comprising cellular polyvinyl chloride. 
     
     
         4 . The piece of  claim 3 , wherein the radius is from about 1/16″ to about ¼″. 
     
     
         5 . The piece of  claim 4 , wherein the radius is about 0.250 inches. 
     
     
         6 . The piece of  claim 1 , wherein the radius is about 0.250 inches. 
     
     
         7 . The piece of  claim 6 , wherein the shoulder includes a shoulder length of at least about 0.750 inches. 
     
     
         8 . The piece of  claim 7 , wherein the cheek includes a cheek length of at least about 1.000 inches. 
     
     
         9 . The piece of  claim 2 , wherein the radius is from about 1/16″ to about ¼″, the shoulder includes a shoulder length of at least about 0.750 inches, and the cheek includes a cheek length of at least about 1.000 inches. 
     
     
         10 . The piece of  claim 9 , further comprising cellular polyvinyl chloride. 
     
     
         11 . The piece of  claim 1 , further comprising:
 a first rabbet joint with a first shoulder and first cheek and a first curved surface having a first radius in the first rabbet joint; and   a second rabbet joint with a second shoulder and second cheek and a second curved surface having a second radius in the second rabbet joint.   
     
     
         12 . The piece of  claim 11 , wherein each of the first and second radius is from about 1/16″ to about ¼″. 
     
     
         13 . The piece of  claim 12 , further comprising polyvinyl chloride. 
     
     
         14 . The piece of  claim 13 , further comprising cellular polyvinyl chloride. 
     
     
         15 . A building or construction piece comprising:
 a generally planar first outer surface portion with an embossing of polyvinyl chloride material;   a first rabbet joint including a first shoulder and a first cheek, wherein the first outer surface portion is part of the first cheek; and   a curved surface having a first radius in the first rabbet joint.   
     
     
         16 . The piece of  claim 15 , wherein the first radius is from about 1/16″ to about ¼″. 
     
     
         17 . The piece of  claim 16 , wherein the first radius is about ¼″. 
     
     
         18 . The piece of  claim 15 , further comprising:
 a second rabbet joint including a second shoulder and a second cheek, wherein the first outer surface portion is also part of the second cheek; and   a second curved surface having a second radius in the second rabbet joint.   
     
     
         19 . The board of  claim 18 , wherein each of the first radius and second radius are from 1/16″ to about ¼″. 
     
     
         20 . The piece of  claim 15 , further comprising:
 a generally planar second outer surface portion with an embossing of polyvinyl chloride material, wherein the second outer surface portion forms a corner with the first outer surface portion;   a second rabbet joint including a second shoulder and a second cheek, wherein the second outer surface portion surface is part of the second cheek; and   a second curved surface having a second radius in the second rabbet joint.   
     
     
         21 . The board of  claim 19 , wherein each of the first radius and second radius are from 1/16″ to about ¼″.