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:
Feb. 18, 2003
Filed:
Jul. 31, 2001
Paul D. Carmack, Tipp City, OH (US);
Robert D. Murphy, Huber Heights, OH (US);
Catlow, Inc., Tipp City, OH (US);
Abstract
A vapor assisted fuel dispensing nozzle has a projecting aluminum outer spout tube surrounding an internal fuel supply tube, and the tubes define therebetween a vapor return passage. The inner fuel supply tube extends from a spring biased poppet valve for producing a venturi suction in response to fuel flow. The outer spout tube encloses a stainless steel spout extension reinforcing tube having peripherally spaced vapor return flutes or grooves and an internal valve seat at the distal end for receiving a recessed valve member. In one embodiment, the valve member is connected by a stiff wire to a spring biased fuel pressure sensing disk slidable within a cylinder located upstream of the poppet valve. In another embodiment, the valve member is guided by a cup-shaped cage recessed within a tip chamber of the extension tube.