Fuel filter with bypass valve
First Claim
1. A filter including a housing having an inlet and outlet for directing fluid into and out of the housing, the housing including removably connectable housing portions defining a filter cavity, a pump supported in the filter cavity for pumping fluid through the housing, and a filter element in the filter cavity disposed in surrounding relation to said pump for separating particulate from the fluid, a flow path defined from the inlet, through the filter element and then the pump, to the outlet, fluid passing through said flow path when said pump is operational, and being prevented from flowing through the pump when said pump is non-operational;
- and a bypass valve in said housing normally in a closed position when said pump is operational, and moving to an open position when said pump is not-operational to provide a by-pass flow path from said inlet to said outlet, bypassing said pump.
3 Assignments
0 Petitions
Accused Products
Abstract
A fuel filter includes a pair of housing portions defining an interior cavity. A filter element is provided in surrounding relation to a fuel pump. A diverter plate assembly supported in the housing in sealing relation with one of the housing portions, the pump and the filter element, includes a bypass valve with a ball member. The bypass valve is normally closed when the pump is operational, and fuel flow passes from the inlet, through the filter element, and through the pump to the outlet. When the pump is not operational, the bypass valve opens, and fuel flow passes from the inlet through the filter element, and then directly to the outlet, bypassing the fuel pump. The diverter plate assembly includes a segmented collar that couples the assembly to one of the housing portions; a lip seal sealing to the pump; an outer rim that seals to one of the housing portions; and an annular flange that seals to the filter element.
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Citations
25 Claims
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1. A filter including a housing having an inlet and outlet for directing fluid into and out of the housing, the housing including removably connectable housing portions defining a filter cavity, a pump supported in the filter cavity for pumping fluid through the housing, and a filter element in the filter cavity disposed in surrounding relation to said pump for separating particulate from the fluid, a flow path defined from the inlet, through the filter element and then the pump, to the outlet, fluid passing through said flow path when said pump is operational, and being prevented from flowing through the pump when said pump is non-operational;
- and a bypass valve in said housing normally in a closed position when said pump is operational, and moving to an open position when said pump is not-operational to provide a by-pass flow path from said inlet to said outlet, bypassing said pump.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A filter including a housing having an inlet and outlet for directing fluid into and out of the housing, and an internal filter cavity, a pump supported in the filter cavity for pumping fluid through the filter, and a filter element for separating particulate from the fluid, a flow path defined from the inlet, through the filter element and the pump, to the outlet, fluid passing through said flow path when said pump is operational, and being prevented from flowing through the pump when said pump is non-operational;
- and a bypass valve supported in a diverter plate assembly in said housing, said diverter plate assembly sealing to said housing, to said pump, and to said filter element, and including a one-way check valve, said one-way check valve normally in a closed position when said pump is operational; and
moving to an open position when said pump is non-operational to provide a by-pass flow path from said inlet, through said element, to said outlet, bypassing said pump. - View Dependent Claims (22, 23)
- and a bypass valve supported in a diverter plate assembly in said housing, said diverter plate assembly sealing to said housing, to said pump, and to said filter element, and including a one-way check valve, said one-way check valve normally in a closed position when said pump is operational; and
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24. A filter including a housing having an inlet and outlet for directing fluid into and out of the housing, and an internal filter cavity, a pump supported in the filter cavity for pumping fluid through the housing, and a filter element for separating particulate from the fluid, a flow path defined from said inlet, through the filter element and said pump, to said outlet, fluid passing through said flow path when said pump is operational, and being prevented from flowing through the pump when said pump is non-operational;
- and a bypass valve responsive to pressure from the pump, said by-pass valve normally in a closed position when said pump is operational; and
moving to an open position when said pump is not-operational to provide a by-pass flow path from said inlet to said outlet, bypassing said pump. - View Dependent Claims (25)
- and a bypass valve responsive to pressure from the pump, said by-pass valve normally in a closed position when said pump is operational; and
Specification