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Method and apparatus for indicating rotational speed of footballs

  • US 20100304905A1
  • Filed: 05/26/2009
  • Published: 12/02/2010
  • Est. Priority Date: 05/26/2009
  • Status: Abandoned Application
First Claim
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1. A football adapted to be thrown in a manner resulting in spinning of said football substantially around a long axis thereof as said football travels along a trajectory;

  • said football having spin speed indicia applied on an outer surface, said indicia being aligned with the direction of spin of said football about said long axis;

    wherein said indicia provide an indication of whether said football is spinning at at least a first predetermined minimum spin speed.

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