Non-electric system for detecting an impact to sports helmets, namely, test tube attachments to helmets that break open and turn red upon a significant force impact to helmet, indicating that helmet has taken a significant impact and wearer may have received concussion

'attach':15 'break':19 'concuss':44 'detect':6 'electr':3 'forc':27 'helmet':11,17,30,33 'impact':8,28,38 'indic':31 'may':41 'name':12 'non':2 'non-electr':1 'open':20 'receiv':43 'red':23 'signific':26,37 'sport':10 'system':4 'taken':35 'test':13 'tube':14 'turn':22 'upon':24 'wearer':40

SHOCKWAVE SYSTEM

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