Shaft support structure

A shaft support structure comprising:

• (a) an elongated shell having interior surfaces which define a hollow interior, said shell having a plurality of perforations having edges;
• and
• (b) a plurality of reinforcing ribs of plastic material located within the hollow interior of said shell, at least a portion of said reinforcing ribs being in abutting relationship with the interior surfaces of said shell, said reinforcing ribs defining a longitudinal passage through said elongated shell for receiving and supporting a rotatable shaft,
• wherein said reinforcing ribs are formed by molding of plastic material onto the interior surfaces of said shell, and a portion of the plastic material of said reinforcing ribs extends through at least some of said perforations of said shell, the edges of said perforations being embedded in the plastic material extending therethrough, thereby attaching fixedly said reinforcing ribs to said shell.