US Patent 10232581 Carbon fiber tube with increased rigidity and decreased weight

A carbon fiber tube preferably includes first, second and third carbon fiber sheets. The first carbon fiber sheet includes a cross weave pattern of fibers, which cross each other at substantially 90 degrees. One axis of the fibers of the first carbon fiber sheet is aligned to form a lengthwise axis of the carbon fiber tube. The second carbon fiber sheet includes the same cross weave pattern as the first carbon fiber sheet. One axis of the fibers of the second carbon fiber sheet is turned 45 degrees relative to the lengthwise axis. The third carbon fiber sheet includes the same cross weave pattern as the first carbon fiber sheet. One axis of the fibers of the third carbon fiber sheet is aligned with the lengthwise axis of the carbon fiber tube. The first, second and third carbon fiber sheets are baked in an autoclave.