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:
May. 02, 2000
Filed:
May. 12, 1998
Shigeo Ueda, Yokohama, JP;
Osamu Imabayashi, Shiga-ken, JP;
Taiyo Kogyo Corporation, Osaka, JP;
Abstract
A waste disposal site according to the present invention is provided with water-impermeable properties by water-impermeable materials covering a bottom surface and a sloped side surface of the waste disposal site. The waste disposal site is provided with a water-impermeable material damage-detecting system comprising electrodes for feeding electricity disposed above and below the water-impermeable materials for forming an electric field, and electrodes for measurement disposed along the water-impermeable materials. The system allows for detection of damages to the water-impermeable materials based on a potential variation at a damaged portion thereof. In the waste disposal site, a surface of the water-impermeable material on the sloped side surface is provided with water-retentive cover layers through a planting material or by employing an artificial material, and an electric field is formed inside the cover layer to allow any damages to the water-impermeable materials on the sloped side surface to be detected.