Though it looks like the original Human Slingshot machine, which was patented in 1995; the improved version promises to solve the deficiencies of its predecessor. One of the major deficiencies of the former slingshot was the tendency for the rubber strands to deteriorate. In its patent, it explains that ‘the invention relates to an amusement device….used to successively propel and retard the rider to cause the rider to undergo a vertically oscillatory motion.’