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Marking device with transmitter for triangulating location during locate operations

  • US 8,620,572 B2
  • Filed: 08/19/2010
  • Issued: 12/31/2013
  • Est. Priority Date: 08/20/2009
  • Status: Active Grant
First Claim
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1. A system for tracking location of a marking device used to mark a presence or an absence of an underground facility during performance of a marking operation at a work site, the system comprising:

  • the marking device comprising a transmitter configured to transmit a wireless signal;

    a first receiving system coupled to a vehicle at the work site, disposed at a first stationary location on the vehicle, and configured to receive the wireless signal and produce a first output signal;

    a second receiving system coupled to the vehicle, disposed at a second stationary location on the vehicle, and configured to receive the wireless signal and produce a second output signal;

    at least one processor communicatively coupled to the first receiving system and the second receiving system to receive the first output signal and the second output signal and to execute a triangulation algorithm utilizing the first output signal and the second output signal;

    a marking material dispenser; and

    an actuator configured to initiate dispensing of marking material from the marking material dispenser upon actuation of the actuator;

    wherein the transmitter is configured to transmit the wireless signal upon actuation of the actuator.

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