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:
Sep. 06, 1988
Filed:
Dec. 06, 1985
Ed. Z.sup.3 blin Aktiengesellschaft, Stuttgart-Mohringen, DE;
Abstract
A multilayer plate for use in covering waste depositories comprises at least one drainage layer and a filter stabilization layer, the drainage layer serving to facilitate or enable the removal of water seeping downwardly from the surface of the depository covering or gases rising from the depository body. The filter stabilization layer comprises a fabric web, while the drainage layer includes a plastic grid. The plate is prefabricated and is of sufficient flexibility to be wound upon a roll for transport to a depository site. In one form, the prefabricated plate also includes a synthetic resin barrier layer which, upon installation of the plate, blocks the passage of water from above and the passage of gases from below.