commerce of switchblade knives, and for other purposes (commonly known as the Federal Switchblade Act) (15 U.S.C. 1244) is amended??? (1)by striking or at the end of paragraph (3); (2)by striking the period at the end of paragraph (4) and inserting ; or and (3)by adding at the end the following: (5)a knife that contains a spring, detent, or other mechanism designed to create a bias toward closure