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Cutoff wall system to isolate contaminated soil

  • US 5,388,931 A
  • Filed: 10/18/1993
  • Issued: 02/14/1995
  • Est. Priority Date: 10/18/1993
  • Status: Expired due to Fees
First Claim
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1. A connector for plastic sheet comprising an outer portion and an inner portion,the outer portion comprising a first tube having a tube slot lengthwise, the slot having a slot-width, and a first flap disposed in a diametrically opposite position with respect to the tube slot and directed away from the tube slot, the first tube also having a first upper end and a first lower end;

  • the inner portion comprising a second tube having a second flap, the second flap having a thickness, the second tube adapted to fit within the first tube in a manner that the second flap extends through the tube slot in a direction away from the first flap, the second tube also having a second upper end and a second lower end; and

    the slot-width being 10-50% smaller than the thickness of the second flap.

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