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Methods and apparatus for generating alerts on a marking device, based on comparing electronic marking information to facilities map information and/or other image information

  • US 8,510,141 B2
  • Filed: 02/05/2010
  • Issued: 08/13/2013
  • Est. Priority Date: 10/02/2008
  • Status: Active Grant
First Claim
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1. A marking apparatus to mark a presence or an absence of an underground facility, the marking apparatus comprising:

  • a housing;

    a marking dispenser holder coupled to the housing to hold a replaceable marking material;

    an actuator that, when actuated, causes dispensing of the marking material;

    a display device coupled to the housing;

    at least one memory; and

    at least one processor, communicatively coupled to the display device and the at least one memory, and configured to;

    display on the display device a map image that is generated based on first map data that comprises facilities map data and is selected by the at least one processor; and

    compare a first location at which marking material is dispensed by the marking apparatus to a second location of a facility line as indicated by the first map data and generate an alert based on a disagreement between the first location and the second location.

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