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:
Jul. 08, 2014
Filed:
Oct. 18, 2010
David Bolt, Ducansville, PA (US);
Dale Spence, St. Louis, MO (US);
Dale Ewing, Hollidaysburg, PA (US);
David Jonathan Hassell, Titirangi, NZ;
John Layne, Perth, AU;
Lindsay Bruce Dalziel, Auckland, NZ;
David Bolt, Ducansville, PA (US);
Dale Spence, St. Louis, MO (US);
Dale Ewing, Hollidaysburg, PA (US);
David Jonathan Hassell, Titirangi, NZ;
John Layne, Perth, AU;
Lindsay Bruce Dalziel, Auckland, NZ;
Veeder-Root Company, Simsbury, CT (US);
Abstract
A method of operating a vapor recovery system that recovers vapors expelled from a vehicle during refueling at a fuel dispensing point and returns the vapors to an underground storage tank through a vapor flow path that is in fluid communication with an air to liquid regulator valve and a vapor pump. The method includes dispensing fuel into the vehicle through the fuel dispensing point, regulating an amount of vapor that is recovered through the fuel dispensing point with the air to liquid regulator valve in proportion to the fuel dispensed into the vehicle, detecting a parameter of the vapor recovery system, and maintaining a substantially constant pressure level in a first portion of the vapor return path that is disposed between the vapor pump and the air to liquid regulator valve.