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The result was what the Hansons would later summarize in their United States patent request as a “protective helmet cap” with “a durable energy absorbing outer shell, which lessens the initial impact to the helmet … [and] an inner surface that allows the outer shell to slide over the surface of a helmet thereby reducing forces applied to a wearer.” As development continued throughout 2011, Erin and Lee used money from The Hanson Group to send the caps away for independent drop testing—a longtime headgear industry standard in which a helmet-wearing dummy head is dropped onto a modular elastomer pad for measuring impact and shock absorption—at accredited sites like Oregon Ballistic Laboratories, ICS Laboratories, and the Southern Impact Research Center
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