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Hand held probe for measuring tire tread wear

  • US 6,789,416 B1
  • Filed: 10/10/2001
  • Issued: 09/14/2004
  • Est. Priority Date: 01/14/1999
  • Status: Expired due to Term
First Claim
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1. A probe for measuring tread depth, said probe comprising:

  • a housing having a window formed therein, said housing having a proximal end and a distal end;

    range finding means for finding distance, said range finding means being carried within said housing and oriented so that said range finding means directs a beam of light through said window;

    means for moving said range finding means parallel to said window;

    means carried by said housing for gripping said housing;

    tire-engaging means carried by said housing for engaging a side and two locations on a rolling face of a tire to provide a three-point contact for preserving the integrity of a line of reference to the tire defined by the movement of said range finding means; and

    means carried by said housing and in operational connection with said range finding means and said moving means for sending distance data from said range finding means as said range finding means is moved parallel to said window while a plane of said window is parallel to a tangent of the tire rolling face where engaged by said tire-engaging means.

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