US Patent 6997826 Composite baseball bat

A single member tubular baseball or softball bat of unitary construction comprised of an elongated handle portion and a striking or barrel portion wherein the barrel portion has internal and external cylindrical layers separated by one or more separation barriers, which are not bonded to said layers, located internally within the barrel thickness, and being in intimate contact with these layers. This results in equivalent or higher performing baseball bats than the prior art, as measured by hitting distance, and more consistent performance. The bats are also less costly to manufacture than prior art double walled bats.