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:
Apr. 12, 2005
Filed:
May. 29, 2003
Applicants:
David C. Olson, Minneapolis, MN (US);
Edward L. Schwarz, Minneapolis, MN (US);
Inventors:
David C. Olson, Minneapolis, MN (US);
Edward L. Schwarz, Minneapolis, MN (US);
Assignee:
Invision Investments, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67C003/02 ; B67D001/08 ;
U.S. Cl.
CPC ...
Abstract
A liquid-dispensing nozzle has a system for blowing air for a period of time through the nozzle's spout after the liquid valve closes. The flow of air purges and expels most of the liquid adhering to the interior surface of the spout, preventing this residual liquid from contaminating either the ground on which it may fall when the spout is withdrawn from a filler pipe or the air through evaporation. The invention applies particularly well to dispensing of liquid fuels such as gasoline.