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. 09, 1993
Filed:
Oct. 23, 1992
William A Scott, Mt. Zion, IL (US);
Gary L Baumbarger, Decatur, IL (US);
Tillotson, Ltd., Tralee, IE;
Abstract
A fuel supply system for supplying fuel from a fuel source to an internal combustion engine includes a valve assembly having a shut-off valve automatically responsive to negative pressures transmitted from engine aspiration or a fuel pump. The shutoff valve is diaphragm responsive and moves in the same direction as the flow of fuel in order close the valve assembly, thereby retaining the content of a fuel receptacle infinitely. The shutoff valve is adapted to withstand pressures which may develop in a fuel receptacle without opening. In one embodiment, the fuel supply system includes a vapor line for directing fuel vapor from the fuel receptacle to a portion of the engine, where it can be combusted. The vapor line is operatively associated with a fuel cap. The fuel cap can be selectively rotated positioned so as to permit fuel vapor to enter the vapor line.