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Impact apparatus

  • US 4,850,224 A
  • Filed: 03/03/1988
  • Issued: 07/25/1989
  • Est. Priority Date: 07/08/1986
  • Status: Expired due to Fees
First Claim
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1. An impact apparatus comprising:

  • a hollow body;

    resilient means in the interior and in contact with the inner walls of said body, said resilient means defining a chamber in said body and having a greater resiliency than said body, whereby said resilient means recovers its shape after deformation resulting from impact to said hollow body to quickly cause said hollow body to recover its shape;

    and means communicating with said chamber for receiving air expelled from said chamber and developing an electrical signal indicative of said expelled air.

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