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The worlds safest trampolines, invented right here in New Zealand at Canterbury University! The Springfree trampoline is awesome back yard fun without the tradational safety concerns. Patent information: The Springfree™ Trampoline and FlexiNet™ Enclosures are proprietary trampoline designs protected by a number of international patents, registered designs, and trademarks owned by Board and Batten International Inc.The design objective was to build the world’s only safe trampoline. Springfree™ Trampoline products are protected by US Patent 6319174, China Patent ZL02825390.6, NZ Patent, 513331, Registered Designs  Aust311568, Euro000582717-0001,  Euro000126602-0001,with other patents and registered designs pending. Technology patents cover the following design elements and are either pending examination and/or proceeded to national grant: rod based trampoline concept, visual edge, proprietary rod retaining cleat system, FlexiNet™ safety enclosure, rod safety systems, soft edge trampolines, round rod based trampolines, and oval trampolines. All Springfree Trampoline models are springless, with no springs and provide the next generation jumping option.