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. 11, 1996
Filed:
Jun. 05, 1995
John C Woody, Caro, MI (US);
Kenneth J Cotton, Caro, MI (US);
Walbro Corporation, Cass City, MI (US);
Abstract
A flow control valve for an internal combustion engine fuel delivery system that includes a valve body having a fuel inlet for connection to a fuel supply and a fuel outlet for connection to the fuel pump, so that the pump can draw fuel under vacuum from the supply through the valve and deliver fuel to an engine. A valve element is disposed within the valve body between the inlet and the outlet, and springs urge the valve element to a closed position within the valve body. A diaphragm is also disposed within the valve body between the valve element and the fuel outlet, and is coupled to the valve element such that suction vacuum applied by a fuel pump to the valve body outlet operates the diaphragm to open the valve element against forces applied by the valve springs to permit flow of fuel from the supply through the valve to the pump. The diaphragm is coupled to the valve element by a resilient detent mechanism responsive to vacuum at the valve outlet above a preselected level for releasing the coupling engagement between the diaphragm and the valve element, such that the valve is closed by the springs to terminate flow of fuel to the valve outlet.