Patents Assigned to SLT Environmental, Inc.
  • Patent number: 5401552
    Abstract: A geocomposite liner having a first fibrous layer, a second fibrous layer, and a non-fibrous layer secured between the first and second fibrous layers. A plurality of fibers extend from the non-fibrous layer such that the ends of the fibers extend outwardly of an outer surface of the first fibrous layer. The ends are heat fused so as to secure the ends outwardly of the outer surface of the first fibrous layer. The second fibrous layer is needle punched such that the fibers extend from the second fibrous layer through the non-fibrous layer. The ends of the fibers are heat fused such that the ends have a greater diameter exterior of the first fibrous layer than interior of the first fibrous layer. Some of the ends are heat fused together on the outer surface of the first fibrous layer.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: March 28, 1995
    Assignee: SLT Environmental, Inc.
    Inventors: John L. Bohrer, Harald Unger
  • Patent number: 5320454
    Abstract: A roller machine and method for installing a flexible panel into a trench including a frame, a prime mover connected to the frame, and a plurality of rollers positioned on the frame. The plurality of rollers defining a curved path of travel for the panel. The path of travel has an entry and an exit. The path of travel is nearly vertical adjacent to the exit above and adjacent to the trench. The prime mover is drivingly connected to at least one of the plurality of rollers. The plurality of rollers includes a plurality of support rollers extending across the frame and having an adjustable length generally corresponding to a width dimension of the panel and a plurality of guide rollers arranged in aligned pairs. The guide rollers are positioned adjacent opposite ends of the support rollers and are arranged adjacent to the exit of the path of travel. The path of travel extends between each of the aligned pairs of guide rollers.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: June 14, 1994
    Assignee: SLT Environmental, Inc.
    Inventor: Walter W. Walling