The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1999
Filed:
Dec. 04, 1997
John V Beamer, Atlanta, GA (US);
Hoosier Group, LLC, Atlanta, GA (US);
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.