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:
Jun. 30, 1987
Filed:
Jul. 11, 1986
Satoru Kobayashi, Hitaka, JP;
Satoshi Tanaka, Hitaka, JP;
Junkosha Co., Ltd., Tokyo, JP;
Abstract
A sensor for detecting leaks of a corrosive liquid is provided comprising a pair of plate electrodes made of a conductive metal which is corroded by the liquid to be detected spaced apart and separated by an inner sheet of an electrically insulating material, the inner sheet having a plurality of through-holes, this entire construction being sealingly encased between a pair of outer insulating sheets, at least one of which has a plurality of through-holes. In use, if a leak occurs the liquid passes through the through-holes in the outer insulating sheet, dissolves a portion of one electrode and passes through the through-holes in the inner sheet to the second electrode, causing a short circuit resulting in a rapid and accurately measurable decrease in the resistance in the circuit and, therefore, detection of the leak.