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, 2004
Filed:
Nov. 17, 1999
Applicant:
Inventor:
Seifollah S. Nanaji, Greensboro, NC (US);
Assignee:
Gilbarco Inc., Greensboro, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B67D 5/32 ;
U.S. Cl.
CPC ...
B67D 5/32 ;
Abstract
A vapor recovery system in a fuel dispenser includes the ability to self diagnose the continued viability of a hydrocarbon sensor positioned within the vapor recovery system. A control system associated with the vapor recovery system performs a series of tests including passing pure air over the hydrocarbon sensor and passing a gas known to have hydrocarbons therein over the sensor and evaluating the output of the sensor to see if expected values are output. If the measured values are not within tolerable limits, an alarm is generated.