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:
May. 15, 1990
Filed:
Nov. 30, 1988
Charles J Green, Redondo Beach, CA (US);
John M Morris, Auburn, WA (US);
Timothy L Oliphant, Federal Way, WA (US);
GT Development Corporation, Tukwila, WA (US);
Abstract
A line pressure responsive flow control valve (46) is in series with a solenoid (34) operated off-on valve (26). These two valves (46, 26) are in a common housing having an inlet port (94) and an outlet port (96). A branch (24) of a bypass line (24, 24') extends from a fuel delivery line (10) to a fuel tank (16). A spring (76) biases a closure wall (70) of a piston (66) into contact with a valve seat (88) surrounding a valve orifice (90). Fuel pressure at the inlet (24) acts on the closure wall (70). When this pressure exceeds a predetermined minimum, the piston (66) is moved so as to open the valve orifice (90), allowing fuel to flow from the bypass line (24) to the off-on valve (26). The line pressure responsive flow control valve (46) functions to control flow through the bypass line (24, 24') at times when the off-on valve (26) is open.