Patent ID: 7842378

Claim:
An energy absorber comprising: a first elongated body having a first end and a second end; and a second elongated body having a first end and a second end; wherein the first and second elongated bodies being formed of fiber-reinforced resin which includes: compression direction fiber layers formed of bundles of filament fibers extending parallel to or inclined relative to a longitudinal axis of the body; and intersecting fiber layers formed of bundles of filament fibers extending perpendicular to the longitudinal axis of the body; wherein the compression direction fiber layers and intersecting fiber layers are alternatively stacked to form a laminated structure bound together by binding threads which are looped through the entire thickness of the laminated structure and are secured against one side of the laminated structure by retaining threads; wherein at least one of the first and second elongated bodies has a wavy cross-section; wherein the first elongated body is attached to the second elongated body along its length by thickness threads to form a tubular body; and wherein the tubular body is impregnated in a resin.