Football Helmet With Pressable Front Section
作者： James C. Wingo , Michael M. Princip , Jeremy J. Thompson
DOI:
关键词:
摘要: A protective helmet comprises a shell made of plastic and having raised central region oriented from front the towards rear shell, first vent opening adjacent to on left side region, second right pressable section created by non-linear slit through which does not extend an edge ear holes formed in shell; energy absorbing layer protected outer surface.
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