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Container sealing surface area inspection

  • US 5,896,195 A
  • Filed: 05/15/1997
  • Issued: 04/20/1999
  • Est. Priority Date: 05/15/1997
  • Status: Expired due to Term
First Claim
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1. Apparatus for inspecting the finish of a container having a central axis and an open mouth surrounded by an axially facing sealing surface area, said apparatus comprising:

  • first and second light sources for directing light energy onto the sealing surface area of a container from respective differing angles with respect to said axis,light sensor means including a matrix array sensor and means for directing light energy reflected from the sealing surface area from both of said light sources onto said matrix array sensor such that said sensor views the sealing surface area from at least said differing angles,means coupled to said first and second light sources and to said matrix array sensor for scanning said sensor to obtain two-dimensional images of the container sealing surface area as said first and second light sources are respectively energized, andmeans for detecting commercial variations at the sealing surface area of a container as a function of said two-dimensional images.

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