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Apparatus for laying underground electric cables

  • US 6,478,508 B1
  • Filed: 10/19/2001
  • Issued: 11/12/2002
  • Est. Priority Date: 04/19/1999
  • Status: Expired due to Term
First Claim
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1. An apparatus for laying at least an underground electric cable, comprising:

  • a vehicle longitudinally movable over a trench arranged to receive at least one electric cable;

    a first deposition unit to form a base layer of inert material at the bottom of said trench, said first deposition unit comprising at least a first conveying duct connected at the upper part thereof with feed means for said inert material and at the lower part thereof with a downwardly-turned first discharge opening;

    at least one guide structure, having an inlet end portion turned towards the vehicle front, to engage at least one stretch of said cable, and an outlet end portion disposed at a lower position and turned to the back of the first deposition unit for laying the cable on said base layer, said guide structure having at least one central portion laterally disposed relative to said first conveying duct; and

    a second deposition unit operating at the rear of the guide structure to form a covering layer of inert material upon the base layer and the cable.

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