Abstract: A fuel pump module including a fuel reservoir, a fuel pump communicating with the fuel reservoir and having a fuel outlet, and a fuel filter assembly movably coupled to the fuel reservoir to facilitate installation of the fuel pump module into a fuel tank. The fuel filter assembly communicates with the fuel outlet to filter fuel that has passed through the fuel pump. In one aspect of the invention, the fuel filter assembly is pivotally movable with respect to the reservoir. In another aspect of the invention, the fuel filter assembly is linearly movable with respect to the reservoir.

Abstract: This invention relates to a filter in which a fuel pump for drawing fuel from a tank and a fuel filter unit for filtering foreign matter from the fuel which has been drawn from the tank by the fuel pump are integrally assembled together. More particularly, the invention relates to a filter improved such that the amount of electric charge, which builds up on the filter, is not increased to such an extent that the resin is rapidly deteriorated. In one embodiment, when forming a filter by assembling a generally cylindrical filter element around an outer periphery of a generally cylindrical pump, a cover for covering the filter element is made of a nonconductive material, and the generally cylindrical filter element is of the type which filters foreign matter from the fuel by causing the fuel to flow radially therethrough. With this type of filter element, the amount of electric charge can be reduced.

Abstract: A fuel filter assembly for the filtering of a flow of fuel includes an outer shell defining a hollow interior and, at a first end, a fuel inlet passageway, a fuel outlet passageway, and a water collection region. The outer shell has a second end which is open and constructed and arranged to be closed by a removable lid. Installed within the hollow interior of the outer shell is a fuel filter cartridge which includes a filter element constructed and arranged for water separation. The filter element defines an interior space into which a fuel transfer pump is installed and which is operable to push fuel through the filter element. Included as part of the fuel filter assembly is a filter detector control circuit including a normally-open filter detector switch which is electrically and operably coupled to the fuel transfer pump. A plunger on the filter detector switch must be depressed in order to close the circuit and enable operation of the fuel transfer pump.

Abstract: A feed device for fuel has a feed pump driven by an electric motor and a housing which receives the electric motor. The feed pump and a filter arrangement which has a preliminary pump and a main pump arranged respectively before and behind the feed pump in the fuel flow direction are provided in the housing. The feed pump transports the main flow of fuel through a central recess in the filter pot at the input flow side of the main filter of the filter arrangement. A side channel pump which is open on one side is arranged at the feed pump as a preliminary stage thereof. The fuel can be delivered subsequent to the preliminary filter to a rise pipe and then into a pot housing to a suction area of the main stage of the feed pump.

Abstract: A filter is composed of a filter member forming at least two opposed faces, an inner space surrounded by the filter member for accumulation of a liquid, and a coupling member establishing communication between the inner space and the outside to discharge the liquid in the inner space to the outside. The liquid flows through the filter member, is thereby removed of foreign matters, and is discharged via the coupling member. Convexo-concaves are provided on at least one face of the filter member.

Abstract: A fuel filter comprises a filter head having an inlet and an outlet. A filter element is connectable to a nipple portion in the filter head. An actuating projection supported by the element is engageable with a valve element in the nipple portion to open flow through the nipple portion when the filter element is attached to the filter head. The filter head includes an annular threaded peripheral flange, and the element includes a corresponding annular threaded peripheral flange which together cooperate to secure the element to the head. A manual priming pump in the filter head includes a pair of check valves to control the flow of fluid through the head when priming the filter. A heater assembly includes a heater pan which encloses the heater elements and also includes the nipple portion, formed unitary therewith.

Abstract: A fuel filter and pressure regulator assembly includes a housing, an inlet tube, an outlet and return tube each made of stainless steel. An annular filter element is disposed within the housing and abuts at one end a pressure regulator element which is mounted within an O-ring retainer that is fixed within the housing. A resilient device, such as a wave washer or O-ring, is compressed as the assembly is assembled. In operation, fuel flows in through the inlet tube which is radially offset at a first end of the housing and into an annular space around the annular filter element. The fuel then flows through the filter media and the filter element and out of the outlet tube which is aligned with a hollow core of the filter media. If fuel pressure is too high, the fuel then flows through the pressure regulator, out of the return tube and back to the fuel tank.

Abstract: An integrated fuel filter and fuel pump assembly with a water separation capability includes a fuel filter housing and a fuel filter element placed within the fuel filter housing. The fuel filter housing includes an outer surface with a connection interface for a fuel pump. This connection interface includes a fuel inlet port and mounting provisions for threaded fasteners. The fuel pump which completes the integrated assembly includes a fuel inlet and a fuel exit which is directly connected to the flow inlet of the housing. Further, the fuel pump is directly mounted to the outer surface of the housing in a unitized-type of arrangement. The upper endplate for the filter element is enlarged so as to extend beyond the outer diameter of the filter element and additional serve as a closing lid for the housing.

Abstract: A main filter for an airplane fuel circuit or a fuel circuit for any type of mechanism, the filter having a first and second entry, which go directly into a chamber containing a filtering unit, the first entry receiving the fuel at a temperature essentially equal to that of the second entry which receives a hotter fuel which has passed through a heat exchanger. The filter prevents clogging due to ice formation on the filtering unit of the filter or at least inhibits such clogging. A fuel circuit using such a filter is also disclosed.

Abstract: A fuel filter assembly (10) has a head portion (12) and an element portion (14) enclosing a replaceable cartridge (18). The assembly has a first inlet port (22) which accepts fuel from a tank (90) and filters it by passage through a screen (43) supported on a tube (36). The fuel that has been filtered by passage through the screen is delivered from the assembly through a first outlet port (24) for delivery to a lift pump (96). Fuel from the lift pump is returned to the fuel filter assembly through a second inlet port (26). The fuel is finely filtered by passage through a loop of filter media (60). Clean fuel is delivered from a second outlet port (28) to an engine (104). Contaminants separated from the fuel by passage through the screen and the media loop are collected in first-and second sump areas (78), (80) of the filter housing respectively. An alternative embodiment (110) includes a prefilter screen (158) integral with a replaceable cartridge (118).

Abstract: In order to solve a problem that, under the condition that an amount of the residual fuel within a fuel reservoir is small, the fuel within the fuel reservoir is biased by a swing motion of the fuel caused by an abrupt acceleration or an abrupt braking of an automotive vehicle so that the amount of the fuel in the vicinity of a suction port of the fuel pump is deficient and a sufficient amount of fuel may not be supplied to an engine, an outlet port of a return piping for returning into the fuel reservoir extra fuel from a pressure regulator, out of the fuel to be fed under pressure through the pressure regulator from an interior of the fuel reservoir by the fuel pump is disposed within a sub-tank, and the extra fuel is directed and close to the suction port of the fuel pump.

Abstract: A compact, high capacity in-tank fuel filter defines a large surface area while simultaneously occupying a relatively small space and defining a small footprint. The filter comprises a body of filtration media and an outlet fitting which is integrally molded to the filtration media and provides communication from the interior of the filter to an associated fuel pump to which it is typically mounted. The filtration media of the body is folded upon itself in a multiple accordion fold configuration and sealed along the non-folded edges. The resulting surface area to size (footprint) ratio provides improved flow capacity, reduced pressure drop and extended service life.

Abstract: A liquid filter (1) with a built-in pressure regulator (11) for fuel is proposed, in which the pressure regulator (11) with its diaphragm (32) is mounted on the inside of a cap (14) that has the inflow connector (16) and the tank connector (17). The diaphragm (32), which experiences a flow on its inside, is acted upon by the pressure of the fuel on the clean side (25) of the filter element (21), and the flow through the filter element is radially from the outside inward. Integrating the pressure regulator (11) in the cap enables a simple, compact, economical design of the liquid filter (10), through whose valve (36) in the pressure regulator (11) only cleaned fuel flows.

Abstract: A fuel sending unit assembly includes a pump for pumping fuel from a storage system to a combustion system, a float for measuring the level of fuel remaining in the storage system, and a filter for preventing debris contained in the fuel from entering the combustion system. The assembly is characterized by the filter being attached to the float. In this manner, the assembly intakes fuel from the fuel surface rather than debris or liquid contaminants which have settled on the bottom of the tank. In a preferred embodiment, the assembly further includes a tube for attaching the float to the pump and for channeling fuel from the filter to the pump.

Abstract: An electrostatic charge removing apparatus in a fuel filter is capable of reliably removing electrostatic charge generated in a fuel filter and of reducing cost and weight of the fuel filter by escaping or discharging the electrostatic charge from parts of the fuel filter other than a case of the fuel filter. The fuel filter includes a filter portion that is connected to an outlet of a fuel pump disposed in a fuel tank and is clamped by end plates, a case housing the filter portion therein, wherein the end plates are formed of a conductive material, and a projection that penetrates a cap is formed on one end plate and is grounded.

Abstract: A fuel filter assembly that provides a constant level of least restricted fuel flow through the fuel filter assembly during the useful life of the filter media by utilizing the least possible amount of filter media to provide the least possible pressure differential over the filter media while also providing a constant level of fuel additive by exposing an amount proportional to the filter media required for the least possible restricted fuel flow. The fuel filter assembly utilizes a vertically upward housing that houses a filter media and a fuel additive. The fuel level slowly rises in the housing as the filter media becomes obstructed with contaminants and as the fuel additive dissolves over the life of the filter media. The top portion of the housing is made of a transparent material so that the level of fuel may be easily determined, thereby allowing for an accurate and simple assessment of the useful life of the filter media and the fuel additive.