Patent ID: 9574348
Date: 2017-02-21
CPC Classifications: E04C,F16L

Claim:
1. A composite tubular beam comprising: an outer tube assembly; an inner tube assembly in a form of a polygon composed of only a plurality of straight line segments, each pair of straight line segments meeting at a vertex, and wherein the inner tube assembly is disposed within the outer tube assembly; a bonding material; wherein the inner tube is dimensioned such that a plurality of distal edges are joined with the bonding material to an interior surface of the outer tube assembly; wherein a physical contact exists between at least a portion of an outer surface of the inner tube assembly and at least a portion of the interior surface of the outer tube assembly; and wherein the resultant composite tubular beam cross-sectional view comprises a plurality of triangular and/or trapezoidal figures, thereby configured to provide the composite tubular beam with an increased resistance to failure under axial and torsional loads; and wherein the outer tube assembly comprises four right angles with legs of equal length joined to the inner tube assembly; wherein the inner tube assembly comprises a square and is disposed within the outer tube assembly at a plurality of contact points to the outer tube assembly; and wherein the inner tube assembly in the form of a square is placed within the outer tube assembly in a manner such that each square corner is placed at a midpoint of a side of the outer tube assembly and that a plurality of equal triangular shapes is internally formed.