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Pipeline rehabilitation systems

  • US 7,131,791 B2
  • Filed: 11/13/2003
  • Issued: 11/07/2006
  • Est. Priority Date: 11/13/2002
  • Status: Active Grant
First Claim
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1. A method for performing untethered work in at least one of a plurality of lateral pipes connected to a main pipe, comprising the steps of:

  • loading a lateral device into at least one lateral pipe from the main pipe;

    anchoring said lateral device to the at least one lateral pipe;

    utilizing said lateral device to perform untethered work on or within the at least one lateral pipe, the power necessary to perform said work being supplied from onboard said lateral device anchored within said lateral; and

    unloading said lateral device from the at least one lateral pipe to the main pipe.

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