Sewer pipe crawler

  • US Patent No. 9657884
  • Issued: May 23, 2017
  • Status: Active
Other

A pipe crawler for crawling inside a pipe having an inside wall includes a front leg assembly that has front legs and feet. It also includes a rear leg assembly that has rear legs and feet. The rear leg assembly is disposed at a distance from the front leg assembly. A midsection operably couples the front leg assembly to the rear leg assembly and is configured to extend and contract the distance between the front leg assembly and the rear leg assembly. A plurality of lever arms are pivotably coupled between the front legs and their corresponding assemblies. The lever arms, in response to a force applied in an orientation traveling from the front of the pipe crawler to the rear of the pipe crawler, are configured to redirect a portion of the force into a normal force between the feet and the pipe inside wall.

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