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US 6,645,373 B2Granted
Dual element water sensing fuel dispenser filter
AssigneeChampion Laboratories, Inc.
InventorMichael J. Gruca
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AssigneeChampion Laboratories, Inc.
InventorMichael J. Gruca
Estimating the term…
The dual element water sensing fuel dispenser filter comprises a housing with an open end. An end plate is positioned in the open end. Contained within the housing is a filter element assembly that includes a first filter portion and a second filter portion. The first filter portion is formed from an annular pleated paper filter media comprised of two layers with a water sensing chemical therebetween. Disposed within the pleated paper filter media are a pair of generally concentric perforate cores containing a chemical fill therebetween. The pleated paper filter media will remove particulate matter from the fuel, whether the fuel be gasoline or an alcohol-gasoline blended fuel. The water sensing chemical in the pleated paper filter media will sense and remove water from the gasoline fuel. The chemical fill will sense the phase separation in the alcohol-gasoline blended fuel and will swell and gell to preclude water from passing through the filter.
A dual element water sensing fuel dispenser filter comprising a housing having an open end, an end plate closing the open end of the housing, the end plate having a central opening defining an outlet opening and at least one opening spaced radially outwardly from the central opening, said at least one opening defining an inlet opening, a filter element assembly within said housing, the filter element assembly being constructed and arranged with the housing so that fuel flow enters the inlet opening, flows through the filter element assembly and exits the housing through the outlet opening, said filter element assembly comprising a pair of spaced apart, generally concentric, perforate cores containing a chemical fill therebetween, a pleated paper filter media disposed outwardly from the outermost perforate core, said filter media comprising a base layer, an outer layer and a water sensing chemical enclosed between the two layers, said chemical fill sensing phase separation in an alcohol-gasoline blended fuel, said water sensing chemical sensing water contamination in the fuel, whereby a single fuel dispenser filter can be used throughout the year for filtering either gasoline fuel or alcohol-gasoline blended fuel.
A dual element water sensing fuel dispenser filter comprising a housing having an open end, an end plate closing the open end of the housing, the end plate having a central opening defining an outlet opening and a plurality of openings spaced radially outwardly from the central opening, said plurality of openings defining an inlet opening, a filter element assembly within said housing, the filter element assembly being constructed and arranged with the housing so that fuel flow enters the inlet opening, flows through the filter element assembly and exits the housing through the outlet opening, said filter element assembly comprising a pair of spaced apart, generally concentric, perforate cores containing a chemical fill therebetween, a pleated filter media disposed outwardly from the outermost perforate core, said filter media comprising a base layer, an outer layer and a water sensing chemical enclosed between the two layers, said chemical fill sensing phase separation in either a methanol-gasoline blend or an ethanol-gasoline blend, said water sensing chemical sensing water contamination in the fuel, whereby a single fuel dispenser filter can be used for filtering methanol-gasoline blend, or ethanol-gasoline blend, or non-alcohol blended gasoline.
A dual element water sensing fuel dispenser filter comprising a housing having an open end, an end plate closing the open end of the housing, the end plate having a central opening defining an outlet opening and a plurality of openings spaced radially outwardly from the central opening, said plurality of openings defining an inlet opening, a filter element assembly within said housing, the filter element assembly being constructed and arranged with the housing so that fuel flow enters the inlet opening, flows through the filter element assembly and exits the housing through the outlet opening, said filter element assembly comprising a pair of spaced apart, generally concentric, perforate cores containing a chemical fill therebetween, a pleated filter media disposed outwardly from the outermost perforate core, said filter media comprising a base layer, an outer layer and a water sensing chemical enclosed between the two layers, said chemical fill sensing phase separation in an alcohol-gasoline blend, said water sensing chemical sensing water contamination in the fuel, whereby a single fuel dispenser filter can be used throughout the year for filtering an alcohol-gasoline blend, or a non-alcohol blended gasoline.
A filter element assembly for use in a fuel dispenser filter, said filter element assembly comprising a core subassembly comprising an inner perforate core and an outer perforate core, the inner and outer cores being spaced apart in a generally concentric fashion, a chemical fill disposed between the inner core and the outer core, a pleated filter media disposed outwardly from the outermost perforate core, said filter media comprising a base layer, an outer layer and a water sensing chemical enclosed between the two layers, said chemical fill sensing phase separation in an alcohol-gasoline blend, said water sensing chemical sensing water contamination in the fuel, whereby a single cartridge can be used for filtering an alcohol-gasoline blend, or a non-alcohol blended gasoline.
Dependencies are inferred from the claim text.