Hydraulic and earth engineering – Drainage or irrigation
Patent
1997-12-04
1999-03-09
Graysay, Tamara
Hydraulic and earth engineering
Drainage or irrigation
405118, 249 11, 404 2, E02B 900, E01C 1122
Patent
active
058791060
ABSTRACT:
A trench liner system used for forming a single or a dual containment trench where expansion and contraction of the liner is controlled. For single containment, the trench system has a primary liner or a primary liner and a separator. For dual containment, the trench system has a primary liner and a secondary liner, or a primary liner, a separator and a secondary liner. Each system also includes anchors spaced along the length of the liner so as to partition the liner into juxtaposed vertical segments. The anchors allow unimpeded contraction and expansion of the liner between anchors within a segment. These embodiments may include a holding element for holding the liners against the trench walls so as to allow each segment to expand and contract along its respective length. Another embodiment of this invention provides laterally extending cavities spaced along the length of the trench. For single or dual containment, the liners contain lateral extensions along their respective length which are disposed within the respective cavities.
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Graysay Tamara
Hoosier Group LLC
Mayo Tara L.
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