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Springfree Trampoline
Springfree Trampoline is a company that manufactures recreational trampoline products and accessories. The design was created by Dr. Keith Vivian Alexander, an associate professor in the Mechanical Engineering Department at the University of Canterbury in Christchurch, New Zealand. History After analysing trampoline data in 1992, Dr Keith Vivian Alexander of Canterbury University, Christchurch, New Zealand, noted three major impact zones on the trampoline designed by George Nissen in the 1930s; these impact zones needed to be re-engineered to increase trampoline safety: #The Springs – on the jumping surface. #The Steel Frame – on the jumping surface/ jumpers may fall and injure themselves. #The Ground or obstructions on the ground – jumpers would hit as a result of falling off. In 1999, he released his first prototype utilizing glass-reinforced plastic rods and the first commercial versions began selling in late 2004. In 2009, Springfree Trampoline won an Australian De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trampoline
A trampoline is a device consisting of a piece of taut, strong fabric stretched between a steel frame using many coiled spring (device), springs. Not all trampolines have springs, as the Springfree Trampoline uses glass-reinforced plastic rods. People bounce on trampolines for recreational and competitive purposes. The fabric that users bounce on (commonly known as the "bounce mat" or "trampoline bed") is not elastic itself; the elasticity is provided by the springs that connect it to the frame, which store potential energy. History Early trampoline-like devices A game similar to trampolining was developed by the Inuit, who would toss blanket dancers into the air on a walrus skin one at a time (see Nalukataq) during a spring celebration of whale harvest. There is also some evidence of people in Europe having been tossed into the air by a number of people holding a blanket. Mak in the Wakefield Mystery Play ''The Second Shepherds' Play'', and Sancho Panza in ''Don Quixote' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
