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:
Aug. 31, 1993
Filed:
Jun. 03, 1992
Warren P Faeth, Fort Wayne, IN (US);
Tokheim Corporation, Fort Wayne, IN (US);
Abstract
A fuel dispensing system and method for making same having a fuel dispensing hose connecting between a dispenser pump and nozzle that has a flexible inner tube defining a fluid conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The system includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The venturi section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi opening part of the fuel conduit. The vapor return passage forming at least one looped low portion during dispensing of fuel. The block also has an aspirator mechanism that defines a plurality of separate radial ports communicating between the venturi throat and the annular vapor passage. The ports are formed so that one of the ports will be below the centerline of the looped portion during dispensing of fuel. Liquid fuel that condenses or collects in the annular vapor return passage and is sucked through the aspirator mechanism due to suction produced by the venturi throat.