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. 30, 1993
Filed:
Aug. 15, 1991
Friedrich W Paurat, D-4230 Wesel 1, DE;
Roland Paurat, D-4230 Wesel 13, DE;
Other;
Abstract
An installation for protecting ground water underneath a dump has at least one tunnel driven longitudinally through the ground underneath the dump and an array of casing pipes passing through the ground, each having a lower end opening into the tunnel, and each formed with a multiplicity of throughgoing holes. These casing pipes are longitudinally spaced to receive liquid from their surroundings and conduct it to the tunnel. Respective inner tubes spacedly received in the casing pipes are provided to service the respective casings and their holes. These casings are installed using standard oil-drilling equipment and techniques. Once the tunnel has been driven the bores are slant drilled to it and standard perforated well casings are installed in these slant-drilled bores.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile