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Device for digging narrow trenches and laying prefabricated tongued and grooved components

  • US 6,830,412 B2
  • Filed: 01/29/2003
  • Issued: 12/14/2004
  • Est. Priority Date: 01/29/2003
  • Status: Expired due to Fees
First Claim
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1. A device for digging narrow trenches and laying prefabricated tongued and grooved elements in the trenches, of a kind including a cutting disc (2) and a prefabricated tongued and grooved element feeder, characterized in that the prefabricated tongued and grooved element feeder comprises:

  • a sweeper box (32) with a U-shaped transverse cross section, closed at the front by a rake (34) sized and positioned to be operably drawn through the ground to form the trench and being mounted in such a way to resist excavated earth from falling inside the trench;

    means for pushing the prefabricated tongued and grooved elements (33), comprising a number of motorized drive wheels (7) operably engaging the tongued and grooved elements and transmitting by friction to those elements an axial thrust in order to keep the tongued and grooved elements (33) coupled together while the tongued and grooved elements are deposited into the inside of the sweeper box (32) by said feeder.

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