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The trampoline bed is rectangular 4.28 by 2.14 metres (14 ft 1 in × 7 ft 0 in) in size fitted into the 5.05 by 2.91 metres (17 ft × 10 ft) frame [10] with around 110 steel springs (the actual number may vary by manufacturer). The bed is made of a strong fabric that can be woven from webbing, which is the most commonly used material.
The design was a radical departure from the Spaceball game he had licensed from Nissen, the primary difference was safety. Despite the great safety record, excessive litigation from every bump and scrape led to the discontinuing of the single trampoline design and the emergence of Aeroball with individual trampolines a few years later. [14] [15 ...
Early sprung floors often used leaf or coil springs, whence the name; these floors tended to bounce, but modern floors have suppressed this 'trampoline' effect and so are often called semi-sprung. Other materials have also been used, a notable example is the sprung floor in Danceland, Manitou Beach which was constructed in 1928 using coiled ...
Most competitive gymnastics floors are spring floors. They contain springs and/or a rubber foam and plywood combination, which make the floor bouncy, soften the impact of landings, and enable the gymnast to gain height when tumbling. [2] [3] Floors have designated perimeters called the delimitation strip, indicating an out of bounds area. [4]
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The Springfree trampoline's design includes the use of glass-reinforced plastic rods articulating below the jumping surface, as opposed to the radiating steel spring coils of a Nissen trampoline. The jumping surface is lowered around 450mm below the jumping surface of a traditional trampoline, and the base's rigidity is derived from a tubular ...