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:
Jan. 09, 2001
Filed:
May. 10, 1999
Jeffrey Devall, Liberty, IN (US);
Stant Manufacturing Inc., Connersville, IN (US);
Abstract
A fuel system is provided having a fuel tank formed to include an interior region, a fuel vapor discharge apparatus coupled to the fuel tank to vent fuel vapor from the interior region of the fuel tank, a fuel delivery apparatus formed to include an interior region and coupled to the fuel tank to deliver fuel to the interior region of the fuel tank, and a fuel vapor recirculation apparatus in fluid communication with the interior region of the fuel tank. The fuel vapor recirculation apparatus delivers fuel vapor from the interior region of the fuel tank to the interior region of the fuel delivery apparatus, and includes a sensor in fluid communication with the interior region of the fuel delivery apparatus to sense pressure extant in the interior region of the fuel delivery apparatus, a housing, and a flow restrictor coupled to the sensor and positioned to lie in the housing to move between a first position restricting the flow of fuel vapor from the fuel tank to the fuel delivery apparatus in response to sensations from the sensor without regard to changes in the vapor pressure extant in the interior region of the fuel tank and a second position permitting flow of fuel vapor from the fuel tank to the fuel delivery apparatus.