Bicycle handlebar a steep U-shape from the base, so that the rider's hands rest above waist-level. This style of bicycle handlebar became very popular in the 1960s after the introduction of wheelie bikes such as the Schwinn "Sting-Ray", Raleigh Chopper, and other highly stylized youth bicycles that imitated the appearance of drag-racing or chopper motorcycles of the day. Legislation in the United States introduced during the 1970s limited the maximum height of manufacturer-installed handlebars to 16 inches above the lowest seat setting; European Union safety regulations use a similar limit of 400mm. The apehanger style remained common in the US through the
Raleigh Bicycle Company in 1967 and patented in the US in 1968. The bike was the "must have" item and signifier of "coolness" for many children at the time. The Chopper was first available for sale in June 1969 in North America. It went on sale in the UK in 1970 and sold well, and was a key factor in reviving the company's fortunes. The "Chopper" featured a 3-speed Sturmey-Archer gear hub, shifted using a top-tube mounted gear lever reminiscent of the early Harley-Davidson suicide shifter — one of its "cool" features. Other differences were the unusual frame, long padded seat with backrest,