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:
Nov. 23, 1999
Filed:
Aug. 14, 1998
Applicant:
Inventors:
Wolfgang H Koch, Batavia, IL (US);
Arthur R Brown, Warrenville, IL (US);
Assignee:
Tokheim Corporation, Fort Wayne, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
141 59 ; 141 83 ;
Abstract
A vapor recovery system is disclosed that provides direct measurements of the oxygen concentration within fugitive vapor emissions displaced from a fuel tank during refueling activity. The hydrocarbon concentration is derived from the oxygen concentration and used to adjust the operating speed of a vapor pump so as to minimize the presence of oxygen in the vapor recovery line.