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. 08, 2016
Filed:
Feb. 24, 2015
Jerome R. Singer, Berkeley, CA (US);
Glen Stevick, Berkeley, CA (US);
Jerome R. Singer, Berkeley, CA (US);
Glen Stevick, Berkeley, CA (US);
Other;
Abstract
A leak alarm system for a petroleum pipeline includes one or more detectors installed in the ground adjacent to a pipeline, each detector having a tubular enclosure with a diode light source and photosensor located at the opposed end of the tube. The tubular enclosure is fabricated of a microporous material that has microfiltration properties: it is hydrophobic, so that soil water will not enter the enclosure, but also oleophilic to enable petroleum and related substances migrate through the material of the tubular enclosure and accumulate therein. The petroleum-like materials scatter the beam and diminish the sensor signal, causing a leak alarm signal to be generated.