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Pipeline padding machine with a debris-resistant escalator assembly

  • US 7,927,059 B2
  • Filed: 10/11/2006
  • Issued: 04/19/2011
  • Est. Priority Date: 10/11/2006
  • Status: Active Grant
First Claim
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1. A pipeline padding machine, comprising:

  • an escalator assembly including multiple flight sections attached to a track, wherein each flight section includes a flat leading edge and a trailing end with respect to a direction of travel, the trailing end including a flat trailing edge and a flat angled portion, and wherein the trailing end of each flight section is positioned overlying the leading edge of a next adjacent flight section as the flight sections ascend in the escalator assembly.

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