Repelling-action filter unit and assembly
First Claim
Patent Images
1. A filter assembly operable to remove contaminants from liquid fuel comprising:
- (a) a filter unit having a body and a water repelling-action filter media disposed in a closed loop therein, said body having a fuel inlet port and a fuel outlet port and first and second contaminant outlets, said first and second contaminant outlets disposed on a first side of said body, both said first and second contaminant outlets directly communicating with a common central chamber within said filter media;
(b) a contaminant collection bowl supported by said body and releasably engaged to said first side of said body, said collection bowl having separate first and second collection zones with a separation wall therebetween, said first collection zone disposed below said first contaminant outlet to collect liquid contaminants from said first contaminant outlet as fuel passes through the filter unit, said second collection zone disposed below said second contaminant outlet to collect liquid contaminant from said second contaminant outlet as fuel passes through the filter unit;
(c) first and second drain ports for respectively draining said first and second collection zones; and
wherein, in operation, said first and second collection zones are completely walled off from each other by said separation wall with the only communication between said first and second collection zones being through said body by way of said first contaminant outlet, and wherein said first and second contaminant outlets allow free communication between said first and second collection zones.
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Abstract
A filter assembly and associated filter unit includes a repelling-action filter media for use in vacuum or suction side fuel filter applications. In particular, the filter unit is a screw on unit with centrally located threads at opposite ends of the filter unit and with a specifically designed end cap allowing use of the filter unit with a dual zone collection bowl normally used for coalescing pressure side filter applications. The end cap includes holes which allow use of both of the collection zones in spite of the normal isolation between the collection zones.
81 Citations
28 Claims
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1. A filter assembly operable to remove contaminants from liquid fuel comprising:
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(a) a filter unit having a body and a water repelling-action filter media disposed in a closed loop therein, said body having a fuel inlet port and a fuel outlet port and first and second contaminant outlets, said first and second contaminant outlets disposed on a first side of said body, both said first and second contaminant outlets directly communicating with a common central chamber within said filter media; (b) a contaminant collection bowl supported by said body and releasably engaged to said first side of said body, said collection bowl having separate first and second collection zones with a separation wall therebetween, said first collection zone disposed below said first contaminant outlet to collect liquid contaminants from said first contaminant outlet as fuel passes through the filter unit, said second collection zone disposed below said second contaminant outlet to collect liquid contaminant from said second contaminant outlet as fuel passes through the filter unit; (c) first and second drain ports for respectively draining said first and second collection zones; and wherein, in operation, said first and second collection zones are completely walled off from each other by said separation wall with the only communication between said first and second collection zones being through said body by way of said first contaminant outlet, and wherein said first and second contaminant outlets allow free communication between said first and second collection zones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A filter assembly operable to remove contaminants from liquid fuel comprising:
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(a) a suction-side filter unit having a body and single, integral, radially continuos, annular filter media disposed therein, said body having a fuel inlet port and a fuel outlet port and first and second contaminant outles, said first and second contaminant outlets disposed on a first side of said body, both of said first and second contaminant outlets directly communicating with a common chamber within said filter media; (b) a contaminant collection bowl supported by said body and releasably engaged to said first side of said body, said collection bowl having separate first and second collection zones with a separation wall therebetween, said first collection zone disposed below said first contaminant outlet to collect liquid contaminants from said first contaminant outlet as fuel passes through the filter unit, said second collection zone disposed below said second contaminant outlet to collect liquid contaminant from sAid second contaminant outlet as fuel passes through the filter unit; and (c) first and second drain ports for respectively draining said first and second collection zones; and wherein, in operation, said first and second collection zones are completely walled off from each other by said separation wall with the only communication between said first and second collection zones being through said body by way of said first contaminant outlet, and wherein said first and said second contaminant outlets allow free communication between said first and second collection zones, and wherein said filter media includes at least a water repelling-action portion. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An invention comprising a water repelling-action filter unit including:
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(a) a cylindrical body having a fuel inlet port and fuel outlet port, and first and second contaminant outlets disposed on a first side of said body, both said first and second contaminant outlets directly communicating with a common chamber within said body; (b) a water repelling-action filter media disposed in a closed loop within said body and around said chamber; and (c) mating threads on said first side of said body for mating with threads on a contaminant collection bowl and a cylindrical portion at said first side of said body, said first contaminant outlet within said cylindrical portion and said second contaminant outlet outside of said cylindrical portion; and wherein said filter unit is operative to support a contaminant collection bowl with separate first and second contaminant collection zones disposed respectively beneath said first and second contaminant outlets. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification