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:
Dec. 01, 1987
Filed:
Oct. 14, 1986
Austin B Raabe, Alpharetta, GA (US);
Applied Biology, Inc., Decatur, GA (US);
Abstract
Apparatus for determining if an underground storage tank is leaking provides simple determination by a layman. A housing containing a detection tube is lowered into a well in the vicinity of the tank, and a vacuum pump pulls air through the detection tube. The sampled air will disclose the presence, or not, of vapor from the suspected tank. The method includes the use of discrete sample of air, and the quantity of air is determined by use of a detection tube sensitive to carbon dioxide. An indication of a quantity of carbon dioxide can be related to a volume of air through known relationships. Preferably, the housing containing the detection tube is carried by a float so the intake is just above the surface of any water in the well.