초록 ▼

A fuel filter assembly employs a hand primer and a disposable filter cartridge mounted to a filter base. The filter cartridge and filter base define a fuel flow path through the filter assembly. The filter base includes a sump for receiving fuel that has traversed the filter element. The hand primer

A fuel filter assembly employs a hand primer and a disposable filter cartridge mounted to a filter base. The filter cartridge and filter base define a fuel flow path through the filter assembly. The filter base includes a sump for receiving fuel that has traversed the filter element. The hand primer includes a deformable member composed of an elastomeric material that cooperates with a base plate to define a cavity. The base plate is disposed intermediate the deformable member and the base sump to separate the cavity from the fuel flow path. The base plate has a plurality of orifices to selectively provide fluid communication between the cavity and the sump. A discharge passage in fluid communication with cavity provides means for discharging air from the fuel filter assembly.

대표청구항 ▼

[ What is claimed is:] [1.] A fuel filter assembly comprising:a filter base having a fuel inlet, a fuel outlet, a fuel sump in fluid communication with the fuel outlet, first fuel passage means in fluid communication with the fuel inlet, and second fuel passage means in fluid communication with the

[ What is claimed is:] [1.] A fuel filter assembly comprising:a filter base having a fuel inlet, a fuel outlet, a fuel sump in fluid communication with the fuel outlet, first fuel passage means in fluid communication with the fuel inlet, and second fuel passage means in fluid communication with the sump;a filter cartridge mounted to the filter base for filtering the flow of fuel, the filter cartridge being in fluid communication with the first and second fuel passage means to receive and discharge a flow of fuel, respectively, whereby the filter base and filter cartridge define a fuel flow path;a hand primer comprising a deformable member and a base plate defining a cavity, the base plate being disposed intermediate the deformable member and the sump of the base to separate the cavity from the fuel flow path, the base plate defining first communication means for providing fluid communication between the cavity and the sump, the deformable member having a compressed state when a compressive force urges the deformable member into the cavity and a static state when the compressive force is not applied to the deformable member, the hand primer further comprising a first valve movable between open and closed positions for respectively opening and closing the first communication means between the cavity and the sump; anddischarge means for discharging air from the fuel filter assembly, the discharge means defining a discharge passage in fluid communication with cavity,wherein application of the compressive force to the deformable member moves the deformable member to the compressed state, creating a pressure head within the cavity, and removal of the compressive force returns the deformable member to the static state, creating a suction force within the cavity, the pressure head moving the first valve to the closed position and propelling material in the cavity through the discharge passage and the suction force moving the first valve to the open position whereby the suction force is transmitted to the sump of the base.