Abstract: A fuel filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). A first outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe. The cover further includes a cover projection (482) for supporting a projection (478) on the end cap (460) of the filter element, which opens flow into the standpipe only when the element is installed. The removable element can include first and second filter media rings (426, 716) where fluid is introduced between the rings and flows radially inward through the first media to the first outlet port (416), and radially outward through the second media ring to a second outlet port (710).

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: A filter assembly includes a replaceable filter element disposed within a filter housing. The housing includes a removable cover, and a fitting including an internal central conduit extending along the central axis of the housing. The central conduit is bisected along its length and has a pair of flow channels connected to a pair of ports in the fitting. Another port is provided in the fitting and a still further port is provided in the housing. The filter element includes a first circular imperforate end cap, and a second annular imperforate end cap dimensioned to receive the central conduit. First and second filter media loops are supported between the first and second end caps. An imperforate cylindrical wall is radially disposed between the first and second filter media loops. Annular seals are provided around the opening in the second end cap, at the inner end of the first filter media loop, and at the inner end of the cylindrical wall.

Abstract: A fuel filter comprises a head (96) having an inlet (100) and an outlet (102). The head is connected to an element (266) by a nipple portion (186) which has a valve element (196) therein. An actuating projection (222, 272) is engageable with the valve element to open flow through said nipple portion when the correct element is attached thereto. The actuating projection is further supported on a central portion (220, 276) which prevents connection to a nipple portion that extends too far into the element. According to a further embodiment, the filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). The outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe.

Abstract: A fuel filter comprises a head (96) having an inlet (100) and an outlet (102). The head is connected to an element (266) by a nipple portion (186) which has a valve element (196) therein. An actuating projection (222, 272) is engageable with said valve element to open flow through said nipple portion when the correct element is attached hereto. The actuating projection is further supported on a central portion (220, 276) which prevents connection to a nipple portion that extends too far into the element. According to a further embodiment, the filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). The outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe.

Abstract: A fuel filter comprises a head (96) having an inlet (100) and an outlet (102). The head is connection to an element (266) by a nipple portion (186) which has a valve element (196) therein. An actuating projection (222, 272) is engageable with said valve element to open flow through said nipple portion when the correct element is attached hereto. The actuating projection is further supported on a central portion (220, 276) which prevents connection to a nipple portion that extends too far into the element. According to a further embodiment, the filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). The outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe.

Abstract: A fuel filter assembly includes a housing (12) with a removable element (24) mounted therein. The housing has an inlet port (14) in direct fluid communication with a chamber (18). The outlet port (16) is in direct fluid communication with a central standpipe (22). The standpipe has a flow element (42) movable therein for controlling the condition of flow openings (36) in the standpipe. The element includes projections (88) for engaging recesses (90) in a cover (28) to selectively latch the element and cover together. The cover further includes a cover projection (82) for supporting a projection (78) on end cap (60) of the filter element, which opens flow into the standpipe only when the element is installed. When the element is removed, the flow element prevents the introduction of contaminants into the standpipe.

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: A filter assembly includes a base and cover member which together enclose a planar filter element. Each of the base and cover members has a planar face with a central overpressure opening for an overpressure valve, and a radially-extending channel extending from a port on the side of the base or cover member radially inward to the central overpressure opening. The channel is open along the surface of the planar face. According to a first embodiment, a plurality of radially-extending ribs are disposed in even, spaced-apart relation around the planar surface. The ribs define radial fluid flow paths for even distribution of fluid across the planar face, as well as support a surface of the planar filter member. According to one aspect of this embodiment, a central support rib is suspended along the open side of the channel, and is attached at its radially outer end to an outer annular frame, and at its radially inner end to a ring surrounding the central opening.

Abstract: A fuel filter assembly includes a housing (12) with a removable element (24) mounted therein. The housing has an inlet port (14) in direct fluid communication with a chamber (18). The outlet port (16) is in direct fluid communication with a central standpipe (22). The standpipe has a flow element (42) movable therein for controlling the condition of flow openings (36) in the standpipe. The element includes projections (88) for engaging recesses (90) in a cover (28) to selectively latch the element and cover together. The cover further includes a cover projection (82) for supporting a projection (78) on end cap (60) of the filter element, which opens flow into the standpipe only when the element is installed. When the element is removed, the flow element prevents the introduction of contaminants into the standpipe.

Abstract: A head (10) for mounting a replaceable spin-on fuel filter element (12) for use in a vehicle fuel system, includes an inlet (18) and outlet (76). The inlet is connected in the head to a second chamber (24) through a first check valve (26). The first check valve enables flow only from the first chamber to the second chamber. The second chamber includes a manually actuated pump (28). The second chamber is connected to a fluid in-flow area (64) of the element through a second check valve (62). The second check valve enables flow only from the second chamber to the in-flow area. The first chamber is also connected to the in-flow area of the element through a third check valve (84). The third check valve enables flow only from the first chamber to the in-flow area of the element. To remove air from a newly installed element and to prime the fuel system of the vehicle, the manual pump is cycled.

Abstract: A fuel system for a diesel truck has a first fuel tank (80) and a second fuel tank (82). A siphon line (90) is open to the lower portions of the tanks and extends above the upper portions of both tanks. A manually operated priming pump (98) is used to remove air from the siphon line. Fuel is delivered from the first tank to the engine of the truck through a fluid delivery line (84). As fuel is drawn from the first tank, the fuel levels in the tanks equalize as the result of flow through the siphon line. Fuel not consumed by the engine is returned through an overflow line (86). The returning fuel is warmed as a result absorbing energy during pumping and having been in close proximity to the engine. A three-way control valve (88) directs the warm returning fuel to either the first or second fuel tank in response to the temperature sensed by a temperature sensor (94).

Abstract: A fuel tank venting system for a boat (10) includes a fuel tank (12) the interior of which is open to a filler tube (14) and a vent line (18). A liquid separation and recovery device (20) is connected to the vent line and an outlet line (28) which is open to atmosphere. Vapor delivered to the device through the vent line enters an inlet (24) and passes through an opening (64). The vapor then passes through a screen (86), around a sphere (82) that is buoyant in the liquid fuel, and escapes from the device through an outlet (26). When liquid fuel enters the device, the sphere rises blocking flow to the outlet. The trapped liquid passes through an opening (48) into a cavity (42). The liquid entering the cavity displaces a spring loaded piston (56). When liquid is no longer being delivered to the cavity, the piston pushes the liquid back out the inlet and down the vent line to the fuel tank.

Abstract: A vent line separator (30) having a housing (34) defining an interior chamber (44) having a flow diverter (132) positioned therein that separates liquid and gas and a by-pass valve assembly (106) that permits gas to be vented to the atmosphere under a predetermined minimum pressure, that prevents gas and liquid from being vented to the atmosphere when the liquid pressure in the interior chamber (44) is above a predetermined minimum pressure and below a predetermined maximum pressure, and allows venting of liquid fuel and gas to the atmosphere when liquid pressure in the interior chamber (44) is above a predetermined maximum pressure.

Abstract: An oil pump has a split frame with the pump mechanism situated in a chamber in one of the frames or between the split frames. An inlet conduit extends from an inlet port to the low pressure side of the pump and an outlet conduit extends from the high pressure side of the pump to an outlet port. An excess pressure relief path is provided to permit fluid flow from the outlet conduit to the inlet conduit when the outlet conduit pressure exceeds the inlet conduit pressure by a predetermined difference. This is accomplished by providing a bypass channel formed in one frame and fluidly intersecting the outlet conduit, and a valve cavity formed in the other frame and fluidly intersecting the bypass channel and the inlet conduit. Valve means are situated in the valve cavity for isolating the bypass channel from the inlet conduit during normal pressure differences between the inlet and outlet conduits.

Abstract: A fuel conditioner unit for an internal combustion engine, having a priming pump in which the pump diaphragm member also functions as the pump manual actuating surface. The diaphragm is mounted to the basin portion of the priming pump, so that it has a convex projecting surface adapted to be pushed by the user. A spring associated with the basin, biases the diaphragm outwardly so that it can recover after each downward push by the user. The priming pump basin, suction and discharge legs are preferably integrally formed at the upper portion of the unit frame or base. The frame is made of molded plastic such that an opening or archway is formed between the suction and discharge legs. The plastic frame is sandwiched between the filter housing and a steel bracket, with spring clips passing from the bracket through the archway and into retaining engagement with the housing. The anchor points on the bracket and the housing do not stress the plastic frame.

Abstract: A combination air conditioning accumulator and fuel cooler unit comprises an enclosed housing having fuel inlet and outlets, and refrigerant inlets and outlets. Liquid refrigerant entering the unit is evaporated by means of heat exchange with hotter fuel in the unit. Preferably, the housing is in the form of an elongated cylinder and the fuel flow path is coaxial with the housing longitudinal axis. The heat exchanger includes a substantially cylindrical wall within which the fuel flows, and an outer, finned portion in contact with the flow of refrigerant. A desiccant is provided between the refrigerant flow path and the housing, to serve both insulating and moisture-removing functions. A stand pipe is provided to prevent unevaporated freon from exiting and returning in liquid form to the air conditioning compressor. The housing includes end plug members in which the fuel and refrigerant inlets and outlets are formed, the housing being attached to the plug members by crimp connections.

Abstract: A crankcase oil spray nozzle for cooling the crown of a piston of an internal combustion engine is assembled from relatively few stamped principal housing components which are assembled in a sandwich-like, low-profile configuration. The components cooperate to form a nozzle passageway which extends from an integrally formed well to the nozzle orifice. An indentation is coined in one component to form the nozzle passageway and the nozzle orifice.

Abstract: A fuel conditioner of the type having a housing defining an inner chamber for receiving a filter element, inlet and outlet ports in the housing for establishing a flow of fuel to and from the chamber, and a heater for raising the temperature of the fuel between the inlet and outlet ports. The improvement comprises a baffle plate situated within the housing between the inlet and outlet ports, for directing substantially all the flow of fuel as a thin layer against a selected interior portion of the housing. The heater is situated on the housing exterior adjacent the interior portion of the housing containing the baffle. The fuel passing through the thin passageway therein reaches its highest velocity in the conditioning unit. Particularly if the flow boundary area defined by the housing and the baffle plate is large compared with the volume of the passageway, very high heat transfer from the heating element to the fuel in the passageway is achieved.

Abstract: A tubular nozzle tip is connected to a holder member that is made entirely of sheet metal, the combination being secured together into a nozzle assembly by the bending and tightening of flanges associated with a housing or cover plate portion of the holder member. Preferably, the nozzle tip has a D shaped cross section at the end to be mounted in the holder member and the holder member includes a cover plate having a channel of similar cross section adapted to receive the nozzle tip and form a passageway for delivering oil to the nozzle tip discharge orifice.