Removable pilaster bookcase extension system

Abstract

An expandable bookcase having a fixed pilaster on one side and a removable pilaster on the side opposite thereto. The expandable bookcase is attachable to any number or combination of bookcase extension sections and corner sections.

What is claimed is: 
     
         1 . An expandable bookcase comprising:
 a basic bookcase section having a pilaster side and, opposite thereto, a receiving side,   a removable pilaster attachable to the receiving side, and   a fixed pilaster fixed to the pilaster side.   
     
     
         2 . The invention of  claim 1  wherein the receiving side and the removable pilaster each have holes aligned with one another to facilitate attachment of the receiving side to the removable pilaster. 
     
     
         3 . The invention of  claim 1  wherein the removable pilaster has molding. 
     
     
         4 . The invention of  claim 3  wherein the molding has at least one planar surface and the receiving side has an associated abutting surface to thereby provide a seamless appearance of being a continuous, built-in-place bookcase. 
     
     
         5 . The invention of  claim 4  wherein the planar surface of the molding is not at a right angle with respect to the side of the bookcase. 
     
     
         6 . An expandable bookcase comprising:
 a basic bookcase section having a pilaster side and, opposite thereto, a receiving side, the basic bookcase section further having a fixed pilaster fixed to the pilaster side,   a bookcase extension section having a joining pilaster side and, opposite thereto, a receiving side, the bookcase extension section further having a joining pilaster fixed to the joining pilaster side,   the joining pilaster side of the bookcase extension section being attachable to the receiving side of the basic bookcase section, and   a removable pilaster attachable to the receiving side of the bookcase extension section.   
     
     
         7 . The invention of  claim 6  wherein the joining pilaster has molding. 
     
     
         8 . The invention of  claim 6  wherein the receiving side of the bookcase extension section and the removable pilaster each have holes aligned with one another to facilitate attachment of the receiving side of the bookcase extension section to the removable pilaster. 
     
     
         9 . The invention of  claim 6  wherein the receiving side of the bookcase extension section is attached to the removable pilaster using one or more bolts. 
     
     
         10 . An expandable bookcase comprising:
 a basic bookcase section having a pilaster side and, opposite thereto, a receiving side, the basic bookcase section further having a fixed pilaster fixed to the pilaster side,   a corner section having a joining pilaster side and, across therefrom, a receiving side, the corner section further having a joining pilaster fixed to the joining pilaster side,   the joining pilaster side of the corner section being attachable to the receiving side of the basic bookcase section, and   a removable pilaster attachable to the receiving side of the corner section.   
     
     
         11 . The invention of  claim 10  wherein the corner section is configured to accommodate a right-angle corner. 
     
     
         12 . The invention of  claim 10  wherein the corner section is configured to accommodate a 270 degree corner. 
     
     
         13 . The invention of  claim 10  wherein the corner section is configured to accommodate a convex corner. 
     
     
         14 . The invention of  claim 10  wherein the corner section is configured to accommodate a concave corner. 
     
     
         15 . The invention of  claim 10  wherein the corner section is configured to accommodate an angled corner. 
     
     
         16 . The invention of  claim 10  wherein the corner section is configured to accommodate a curved corner.