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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 ...
The benefit of an enclosure is that it keeps jumpers from falling off a trampoline or impacting the frame. [3] [4] Safety net enclosures vary from one manufacturer to another, such as the opening in the net so that jumpers may enter and exit the trampoline. The design of such openings may include: snap/Velcro system, zipper, or overlapping ...
Keith Vivian Alexander is a New Zealand mechanical engineer and inventor. He is a professor of mechanical engineering at the University of Canterbury, in Christchurch, [1] and the inventor of the springfree trampoline.
Vuly released the Thunder trampoline in all markets during 2013, which secured them a US distribution contract with retailer, Toys 'R' Us. [8] Competitor Springfree Trampolines filed a complaint in 2013 with the United States International Trade Commission, for alleged patent infringement upon its soft-edge trampolines. [9]
In 2007, JumpSport's 15 employee business had $13 million in sales and represented less than 1% of the market for safety net enclosures. [ 1 ] [ 8 ] [ 12 ] JumpSport expanded their line to include fitness trampolines in 2008. [ 10 ]
The nets do prevent jumpers falling off the trampoline onto the ground, but these falls are not the most common source of injury. Multiple users bouncing in a netted trampoline can still be injured. Safety net enclosures have a larger benefit for safeguarding solo trampolinists, so long as they avoid falling on their head or neck.
A life net on display at the Napa Firefighters Museum in Napa, California. Vancouver fireman jumping into life net (1910) A life net, also known as a Browder Life Safety Net or jumping sheet, [1] is a type of rescue equipment formerly used by firefighters. When used in the proper conditions, it allowed people on upper floors of burning ...
He had seen circus trapeze artists use their safety nets as an elastic bed to rebound and perform additional tricks. He thought that this would be useful training tool for his tumbling. In 1934, Nissen and his coach, Larry Griswold, built the prototype trampoline from angle iron with a canvas bed and rubber springs. Nissen used it to help with ...
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