Variable length packing container assembly

Claim 1

A packing container assembly particularly for storing elongated objects comprising: an inner and an outer elongated hollow member each having a polygonal cross-sectional configuration with a closed end and an open end, said open end of said inner hollow member being inserted into said open end of said outer hollow member to place said hollow members in longitudinal sliding engagement relative to each other to form said container assembly; first interlocking means formed on the outer surface of said inner hollow member; second interlocking means formed onfhe inner surface of said outer hollow member, said second interlocking means comprising inwardly projecting webs formed in said outer hollow member; said first and said second interlocking means cooperating to hold said hollow members in fixed engagement with each other; said first interlocking means comprising a plurality of longitudinally spaced members with each of said members comprising protuberances extending outwardly from said inner hollow member and with said members being located diagonally opposite each other and lying in a common plane extending perpendicularly to the longitudinal direction of said hollow members; the polygonal cross-sectional configuration of each of said hollow members being formed with interfitting corners, with the corners of said inner hollow member being formed with an outer radius of curvature which is greater than the inner radius of curvature of said corners of said outer hollow member; each of said inner and outer hollow members being formed as a solid, one-piece member of relatively stiff material.