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:
Jun. 08, 1999
Filed:
Aug. 25, 1997
Thomas Charles Meiller, Pittsford, NY (US);
Timothy Michael Beadnell, Avon, NY (US);
Charles Henry Covert, Manchester, NY (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A fuel vapor storage canister including a mass of carbon granules in a carbon bed chamber of the canister, a liquid trap having a polygonal internal chamber between a vapor inlet port and the carbon bed chamber, and a purge duct traversing the polygonal chamber. The polygonal chamber includes a plurality of three sides which define the gravitational bottom of the chamber in respective ones of a plurality of three orientations of the vapor storage canister. A pick-up tube in the polygonal internal chamber has an outboard end at the convergence of the aforesaid plurality of three sides and an inboard end surrounding an orifice in the vapor purge duct. The inboard end of the pick-up tube is vertically above the maximum level of liquid fuel in the polygonal internal chamber in each of the aforesaid plurality of three orientations of the vapor storage canister. A pressure gradient between the vapor purge duct and the polygonal internal chamber induces liquid fuel to flow through the pick-up tube and the metering orifice into the vapor purge duct.