Patent ID: 6019890
Filing Date: 2000-02-01
Classification: B01D,F02M

Abstract:
A reverse-flow fuel filter assembly comprising:a fuel filter cartridge comprising a filter element defining an axial interior chamber for receiving fuel that has traversed said filter element;a header comprising a rim and having a fuel port defining a reverse-flow exit passage and an axial first passageway that provides fluid communication between said exit passage and said interior chamber; anda hand primer comprisingdiaphragm means cooperating with said header for defining a reservoir disposed intermediate said first passageway and said exit passage;flow director means disposed intermediate said reservoir and said header for directing the flow of fuel into and out of said reservoir, said flow director means defining orifice means for providing fluid communication between said exit passage and said reservoir and opening means for providing fluid communication between said first passageway and said reservoir, said flow director means comprising a cylindrical portion disposed within said rim, said cylindrical portion having an outer surface defining a circumferential groove, and seal means disposed within said groove, wherein said seal means engages said rim to seal said flow director means to said header, said flow director means comprising a radially extending lip defining a lower shoulder and said rim comprises an axially extending portion having an inner surface, wherein said lower shoulder of said flow director means engages said inner surface;biasing means engaged with said diaphragm means and said flow director means for biasing said diaphragm means away from said flow director means;first check valve means for preventing flow from said exit passage to said reservoir through said orifice means; andsecond check valve means for preventing flow from said reservoir to said interior chamber through said opening means.