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. 10, 2009
Filed:
Jul. 13, 2006
Jeffrey S. Basista, Milford, MI (US);
Roy A. Giacomazzi, Auburn Hills, MI (US);
Peter N. C. Nguyen, Sterling Heights, MI (US);
Jeffrey S. Basista, Milford, MI (US);
Roy A. Giacomazzi, Auburn Hills, MI (US);
Peter N. C. Nguyen, Sterling Heights, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A flow-restricting plug is provided for installation within a vapor recirculation pipe that communicates with a fuel filler pipe. The plug is manufactured of fuel-impervious material and has a cylindrical shape adapted to be mounted by press fit within the vapor recirculation pipe. A flow passage of tortuous shape is formed along the outer circumferential surface of the plug between the opposed ends thereof. The tortuous shape of the flow passage permits the flow of fuel vapor through the plug but prevents the flow of liquid fuel through the plug.