Abstract: The present invention provides an apparatus for preventing an outflow of a fuel formed in a fuel tank of a vehicle, the apparatus including a fuel tank disposed in the vehicle to store a fuel and having an outlet passage to evaporate a fuel vapor of the fuel to a canister, a casing disposed to protrude into the fuel tank and having a plurality of holes formed therein for absorbing the fuel vapor, a float elastically supported by a first elastic member within the casing and having a head for shutting off the outlet passage, and a check valve capable of discharging the fuel vapor within the fuel tank by opening and closing an orifice penetrating the head according to pressure within the fuel tank.

Abstract: A weldable vapor vent valve assembly comprising a heat-resistant valve body and a weldable connector portion fastened to an upper end of the valve body for welding onto the outer surface of a polymeric fuel tank. In one embodiment the weldable connector portion is overmolded onto an upper end of the valve body, with the mechanical connection and fluid seal between the weldable connector portion in the valve body strengthened by one or more sets of circumferential anti-leak ribs on the upper end of the valve body. In another embodiment the weldable connector and the valve body are manufactured separately, and the seal and connecting means for assembling the two in a fluid- and vapor-tight manner allow the valve body to be assembled to the weldable connector in a simple axial press-fit.

Abstract: In a first valve mechanism 30, a positive pressure spring 31 presses a first valve plug 34 to seat an external ring projection 37 of the first valve plug 34 onto a bottom surface 39 of a support cylinder 35. The first valve mechanism 30 opens at a first valve-opening pressure P1 responsive to a pressure balance across the positive pressure regulating valve plug 34. In a safety valve mechanism 60, the same spring (the positive pressure spring 31) presses a safety valve plug 61 via the external ring projection 37 seated on the bottom surface 39 to seat a sealing ring projection 62 of the safety valve plug 61 onto an upper face 63 of a partition wall 28. The safety valve mechanism 60 opens at a second valve-opening pressure P2 responsive to a pressure balance across the safety valve plug 61.

Abstract: A fuel tank structure in an automobile comprising: a fuel tank having a recessed portion and first and second air chambers separated by the recessed portion and having top walls located at different levels; a fuel tube with a breather pipe; a fuel cutoff valve provided on the high-level top wall of the first air chamber and having a casing projecting thereinto, discharge holes for fuel evaporation gas, a valve seat opening formed at the central portion on a top wall of the casing, a float valve movably provided in the casing, and a spring for pressing the float valve toward the valve seat opening; a fuel cutoff valve with a float provided on the low-level top wall of the second air chamber and having a casing projecting thereinto, discharge holes for fuel evaporation gas, a second float valve movably provided in the casing to tightly close a valve seat opening, a spring for pressing the second float valve toward the valve seat opening, a lower casing provided at a bottom of the casing, a float movably accommo

Abstract: The valve is operable with a bubble generator that provides a restricted flow of air bubbles into a reservoir of an ink-jet pen to relieve excessive back pressure in the pen. The valve includes housed operating liquid that closes the valve in the event that the pen is tipped out of an upright orientation. A hydrophobic air-porous vent is provided for permitting passage of air bubbles through the valve into the reservoir while prohibiting the flow of the operating liquid through the vent.

Abstract: An internal gas removal system for a fuel tank is comprised of a venting system and a breathing system, both of which are placed substantially completely inside the fuel tank. The breathing system removes gases from the fuel tank while fuel is introduced into the fuel tank, while the venting system removes gases from the fuel tank while the vehicle is operated and the fuel is not introduced into the fuel tank. Both, the venting and the breathing systems are connected to their respective exit lines which exit the fuel tank through a single dedicated opening or through a filler pipe. A method of making the internal gas removal system comprises introducing the breathing and the venting systems into a blow mold and subsequently blow-molding the fuel tank around these systems.

Abstract: An ink-jet pen for storing at below-ambient pressure has an orifice formed therein for providing air bubbles to prevent the back pressure from rising above a level that would cause malfunction of the pen. The amount of air drawn into the reservoir is restricted by the reservoir ink that covers the orifice whenever the pen is in an upright position. The valve operates to occlude the orifice whenever the pen is moved into a position, such as inverted, where the reservoir ink no longer covers the orifice. The occlusion of the orifice prevents the unrestricted flow of ambient air into the reservoir that would otherwise eliminate the required back pressure in the reservoir. The valve includes a sealing liquid selected so that the liquid occludes a passage between the orifice and ambient air without flowing through that passage.

Abstract: A valve plug is biased inwardly by a spring (90) to close an opening (10) in a cap (2) for a fuel tank filling and venting tube. A valve stem includes a first portion (62) which is engaged by the spring (90) and a second float cage portion (40) that is secured to and extends axially inwardly from the plug. A collapsible retainer (70) is secured to the cage (40) and has an abutment surface (74) which engages an abutment surface (68) on the first portion (62) to hold the cage (40) and the first portion (62) in position relative to each other and to transmit axial forces therebetween. A fusible material ring (88) is positioned radially between the retainer (70) and the cage (40) to prevent the retainer (70) from collapsing. At elevated temperatures, the ring (88) melts to allow the retainer (70) to collapse, the cage (40) and first stem portion (62) to separate from each other, and the valve plug and cage (40) to move away from the opening (10).

Abstract: An object of the invention is to improve a ventilation line opening/closing means of a fuel tank which interrupts a ventilation line from the fuel tank to a canister during fuel supply so as to restrict the fuel level when the tank is full, and which opens the ventilation line during traveling of a vehicle. This invention provides a ventilation line opening/closing means of a fuel tank, comprising a float valve provided in a ventilation line for introducing gas of the fuel tank into a canister so as to control ventilation, wherein a fuel receiving portion of return fuel including escape holes is integrally formed on a lower portion of a vent shut-off valve, so that the vent shut-off valve is opened by return fuel from the engine during operation of the engine, and that the vent shut-off valve is closed by the force of a spring during a stop of the engine.

Abstract: The present invention comprises a rollover vent valve for mounting on a vehicle fuel tank to selectively vent fuel vapor from the fuel tank to a vapor trap such as a carbon canister. The valve includes a liquid fuel responsive control element connected to a valve element via lever arm structure to move the valve element between open and closed venting positions on a valve seat. The mechanical opening advantage obtained with the lever arm structure provides for a powerful peel-away action to ensure opening of the valve despite a tank/canister pressure differential acting to maintain the valve element in the closed position. In one embodiment the lever arm structure includes a hammer-claw mechanism to provide an initial pivotal opening force using the maximum potential of the lever arm, and a subsequent rectilinear opening force.

Abstract: A fuel interrupt/pressure release valve arrangement includes a casing mounted at an upper portion of an interior space of a fuel tank. The casing has openings for communicating the interior of the casing with an atmosphere the interior of the fuel tank. A valve housing is formed in the casing having a discharge opening at an upper end. The opening is closed by a stopper biased in a valve closing direction by a spring. A float is provided in the casing having an indentation for loosely receiving the valve housing and a through hole is formed through the float at an apex of the indentation corresponding to the position of the discharge opening of the valve housing. A protrusion formed on the float in the vicinity of the through hole so as to project in an opening direction of the valve so as to be normally in touching contact with the stopper.

Abstract: A fuel outflow preventing apparatus of a fuel tank for a vehicle has an object to prevent fuel outflow from the fuel tank when the vehicle is inclined or turned over. Therefore, this apparatus comprises a canister, a float valve provided in an air chamber of the fuel tank, which float valve is closed when the level of fuel in the fuel tank is equal to or higher than a predetermined level and when the vehicle is inclined or turned over, a fuel outflow preventing valve provided in an upper portion of the air chamber of the fuel tank, which fuel outflow preventing valve is closed when the vehicle is inclined or turned over, a first evaporation passage for communicating the float valve with the canister, a second evaporation passage for communicating the fuel outflow preventing valve with the canister, and opened/closed valve device provided in the second evaporation passage.

Abstract: An apparatus is provided for controlling discharge of fuel vapor from an aperture in a vehicle fuel tank. The apparatus includes a housing mounted in the aperture and a vent valve received in the housing for movement between a closed position blocking flow of fuel vapor from the vehicle fuel tank to a vapor recovery canister and an open position allowing flow of fuel vapor from the fuel tank to the vapor recovery canister. The apparatus also is configured to use vacuum from an external supply source to move the vent valve from the closed position to the open position.

Abstract: The valve, mounted on a vent pipe, allows the passage of gas in both directions, but prevents any escape of liquid fuel. The valve comprises a closed containment 7 equipped with a lower inlet port 8 and with an upper outlet port 9 which are connected to the vent pipe, a stationary circular inner cup 10 kept spaced from the inner wall of the containment and from the inlet port, a vertically displaceable assembly surmounting the cup and comprising a float 13 and a needle 16 which is equipped with a gasket 17 and is fixed to the float and which, in the high position of the assembly, can close off the outlet port 9, and means 11, 14, 15 for causing an upward displacement of the assembly as a result of an inclination of the containment 7. Furthermore, the annular space between the cup 10 and the inner wall of the containment 7 is profiled so as to form a Venturi tube 18 which is kept in relationship via at least one passage 20 with the volume 19 located between the cup 10 and the base of the float 13.

Abstract: The relief valve assembly has a spring-loaded poppet valve that vents the interior of a transport tanker to the atmosphere when gaseous pressure within the tank exceeds a predetermined limit. Sudden surge protection from a pressure spike created by liquid within the tank during the instant that the tank strikes the ground during accidental roll over is provided to keep the poppet valve closed during the surge condition. A reaction piston having one face that counteracts the face of the poppet valve is exposed to pressure within the tank simultaneously with the poppet valve, but the counteracting effect of that surface is normally overcome by a neutralizing chamber on the opposite side of the reaction piston which is likewise exposed to the interior of the tank.

Abstract: A cap for a fill pipe of a fluid container, such as a gas tank, is provided. It has a vent hole which is normally held unsealed by the weight of a ball which impinges against and thereby tilts a spring loaded pin carrying an O-ring. When the cap tips away from the vertical by more than a pre-selected angle, the ball rolls away from the pin and the spring urges the pin to an orientation where the O-ring seals the hole. When the container is tipped beyond the pre-selected angle, should the internal tank pressure exceed a pre-determined level, the pressure overcomes the force of the spring allowing relief venting.

Abstract: An apparatus is provided for controlling discharge of fuel vapor from the fuel tank. The apparatus comprises a housing defining an interior region, an assembly for defining an outer and an inner flow passageway for fuel vapor in the interior region, an assembly for selectively blocking flow of fuel vapor through the outer flow passageway, the blocking assembly being movable between an unblocking position and a blocking position, and an assembly for yieldably biasing the blocking assembly toward the unblocking position.

Abstract: An apparatus is provided for controlling venting of fuel vapor through an aperture in a fuel tank. The apparatus comprises a housing mounted in the aperture and a valve moveable in the housing between a blocking position blocking flow of fuel vapor from the fuel tank through the housing and a venting position allowing flow of fuel vapor from the fuel tank through the housing. A spring biases the valve towards its blocking position. A mechanism is provided for using fuel vapor from the fuel tank to move the valve against the spring towards its venting position. The using mechanism includes a venting control chamber receiving fuel vapor from the fuel tank in a conduit communicating fuel vapor from the fuel tank to the venting control chamber. The conduit includes a first portion and a second portion moveable relative to the first portion to define an intermediate portion.

Abstract: A fuel tank vent valve disposed between the tank and a carbon canister to provide high volume venting between the tank and the canister under normal operating conditions. A diaphragm type control element within the valve pulls an internal valve plate against a seat when the filler pipe cap is removed thereby to close off the vent between the tank and the canister. In one embodiment drainage throughbore is provided in the control element and valve plate to drain liquid fuel which might otherwise collect on and disable the diaphragm control element. In another embodiment the vent valve is provided with a reverse flow flap valve. In another embodiment the vent valve is provided with purge protection apparatus. The system operates with a filler pipe door seal of the type which is opened by the introduction of a filler nozzle. The vent valve is primarily constructed of molded plastic parts.

Abstract: A nipple is attachable to the outer end of the fill pipe of a motor fuel tank and contains a closure flap and a number of other valves performing various functions. The nipple therefore can have unified in it mechanisms performing most or all of the functions required in association with the tank and can be made as a pre-assembled unit quickly and easily attached to a fuel tank in the manufacture of a vehicle to minimize the number of required assembly procedures.

Abstract: The invention incorporates a high flow, pilot actuated pressure relief/rollover valve into a refueling vapor recovery system having a vapor vent line for recirculating vapor past the aspirator of a refueling nozzle and a nozzle seal for engaging a refueling nozzle in an airtight manner. All vapor of evaporative hydrocarbons created during the act of refueling are routed directly to an onboard storage canister.

Abstract: An evapo-control valve, which is disposed in a pipe for connecting a fuel tank and a canister, comprises a fuel tank side connecting port which communicates with the fuel tank, a canister side connecting port which communicates with the canister, an intake manifold side connecting port which communicates with an intake manifold, a closing valve for permitting the canister side connecting port to communicate with the fuel tank side connecting port by the negative pressure in the intake manifold side connecting port during the operation of an engine, and a check valve for permitting the atmosphere in the canister to communicate with the fuel tank when the fuel tank is negatively pressurized due to cold weather during the stop of the engine.

Abstract: A method and an apparatus are disclosed for cleaning water pipe. The pipe is preferably connected to a source of water which normally flows through the pipe to an outlet. A valve is positioned at the outlet and is rapidly opened and closed. When the valve is closed a pressure pulse is created in the pipe and travels towards the source of fluid. This wave is reflected back from the source towards the outlet. The alternate waves expand and contract the pipe wall, and cause pressure fluctuations within the pipe. The combined action removes scale from the wall of the pipe, and when the valve is opened the removed scale passes out of the pipe.

Abstract: A fuel check valve assembly for an automotive vehicle fuel tank includes a valve casing having a valve seat and a float valve movably installed in the valve casing for controlling opening and closing of the valve seat. The float valve consists of a valve float and a valve head cooperative with each other to define therebetween a sealingly closed chamber. The valve head is subjected on opposite sides thereof to a pressure within the sealingly closed chamber and a pressure within the fuel tank, respectively and movable relative to the valve float in response to a pressure differential across the valve head. The valve head is forced to move relative to the valve float and away from the valve seat to open the same when the pressure differential across the valve head is larger than a predetermined value.

Abstract: An apparatus is provided for controlling discharge of fuel vapor from an aperture in a vehicle fuel tank. The apparatus includes a housing mounted in the aperture and a vent valve received in the housing for movement between a closed position blocking flow of fuel vapor from the vehicle fuel tank to a vapor recovery canister and an open position allowing flow of fuel vapor from the fuel tank to the vapor recovery canister. The apparatus also is configured to use vacuum from an external supply source to move the vent valve from the closed position to the open position.

Abstract: A roll-over vapor vent valve is provided having a mounting arrangement for weldably connecting the valve directly onto a polymeric fuel tank. The valve includes a main body casing having at least one inlet for communicating with the internal chamber of the polymeric fuel tank, an outlet for communicating with a point external to the fuel tank and a passageway which communicates with the at least one inlet and the outlet. A controlling mechanism is located within the casing for controlling fluid flow through the passageway between the at least one inlet and the outlet. The mounting arrangement is preferably integral with the main body casing and serves to weldably connect the casing to the polymeric fuel tank. The mounting arrangement may comprise an L-shaped flange which extends out from and encircles a lower portion of the main body casing to define a circumferential weld foot. Alternatively, the L-shaped flange may be bifurcated to define two circumferential weld feet.

Abstract: Valve device, comprising a valve housing (1) with an inlet (3) and an outlet (5), a valve seat (13) and a valve closing member (8) movable in the housing between open and closed positions and having a sealing surface, which in the closed position of the valve closing member (8) is in contact with the valve seat to prevent liquid from flowing through the outlet. The valve closing member interacts with structure (15, 17) which, responsive to tilting of the valve housing relative to a predetermined position, moves the valve closing member to its closed position. The valve closing member being fixed to a float (11), which, as the liquid level rises in the housing (1) in its predetermined position, lifts the valve closing member towards its closed position, the weight of the structure (15, 17) being adapted to the lifting force of the float, so that the valve body, when the housing is filled with liquid and has been turned 180.degree. from the predetermined position, is held in its closed position.

Abstract: An apparatus is provided for controlling discharge of fuel vapor and liquid fuel through an aperture in a fuel tank. The apparatus comprises a housing mounted in the aperture and formed to include a venting outlet, and a blocking mechanism for blocking the flow of fuel vapor through the venting outlet. The apparatus also includes a mechanism for using pressurized fuel vapor from the fuel tank to move the blocking mechanism from a flow-blocking position to a flow-delivery position. The using mechanism includes a diaphragm appended to the blocking means for movement therewith. The apparatus further includes a second mechanism for using fuel vapor discharged from the fuel tank to provide a pressure cushion acting against the diaphragm to urge the diaphragm from its second position toward its first position.

Abstract: A molded assembly comprising a wall made from a plastic sheet that is pliable at a first elevated temperature. A body having a penetrating portion and a connecting portion forms an aperture in the wall, the connecting portion extends through the aperture and is made from a material resistant to melting at the first temperature. The connecting portion is made from a material that will at least partially melt at the first temperature. The connecting portion engages one surface of the wall, whereby when the wall is raised to the first temperature, the connecting portion partially melts and becomes integral with the wall when returned to ambient temperature.

Abstract: An apparatus is provided for controlling flow of fuel vapor and liquid fuel through an aperture in a fuel tank. The apparatus comprises a housing mounted in the aperature, a float valve, a ball, and a mechanism for supporting the ball. The housing is formed to include an outlet, and the float valve is movable in the housing between a closed position blocking flow of fuel vapor and liquid fuel through the outlet and an open position allowing flow of fuel vapor through the outlet. The float valve is formed to include a float chamber and the ball is positioned in the float chamber. The mechanism for supporting the ball is movable relative to the housing. The support mechanism is configured to support the ball in the float chamber so that the ball is able to move in the float chamber in response to movement of the fuel tank to urge the float valve to its closed position.

Abstract: A fuel tank vent valve disposed between the tank and a carbon canister to provide high volume venting between the tank and the canister under normal operating conditions. A diaphragm type control element within the valve pulls an internal valve plate against a seat when the filler pipe cap is removed thereby to close off the vent between the tank and the canister. The system operates with a filler pipe door seal of the type which is opened by the introduction of a filler nozzle. The vent valve is primarily constructed of molded plastic parts.

Abstract: A tank valve apparatus including a sealed piston assembly for regulating movement of a spring biased poppet, the poppet being in cooperative engagement with the sealed piston assembly and a valve seat of an associated valve opening, the valve opening being in communication with ambient atmosphere and pressure within the tank so that the poppet can be activated by a predetermined pressure developed within the tank to overcome the spring bias and vent the pressure to ambient atmosphere. The piston assembly includes a piston head and a flow path through the piston head for flow of material therethrough within a closed piston chamber which encloses the piston head. A snubber valve assembly is included which is carried by the piston head and contained within the closed piston chamber.

Abstract: The invention is a fuel vapor release valve 10 having a two-stage closure. A high volume vapor outlet 15 of large radius is sealed by a valve member 24, upon tilting of the vehicle or in the presence of liquid fuel. The valve member 24 includes a cap member 34 having an orifice 42 of small radius extending therethrough and a seat 36 for engaging with and partially sealing the vapor outlet 14. Loosely engaged with the cap member 34 is a plug member 30 carried by a float member 38 for engaging with and sealing the orifice 42. Upon return to normal operating condition, the plug member 30 first unseats from the orifice 42 and the cap member 34 then unseats from the vapor outlet 14.

Abstract: A vent valve for use with a liquid-containing tank, particularly a gasoline tank carried by a vehicle that customarily travels over hilly terrain. The valve includes a cylindrical housing, within which a check ball and a float ball are each positioned for limited movement within the housing. The check ball and float ball are adapted to be in contact with each other, and the check ball is movable toward and away from a vent aperture provided at the top of the housing. A plurality of guide ribs are provided interiorly of the housing to confine the movement of the check ball to axial movement toward and away from the vent aperture. The check ball is preferably made from a material that has a specific gravity that is substantially greater than that of the liquid contained in the tank, and the float ball is preferably made from a material and is constructed such that is has a specific gravity substantially less than that of the liquid in the tank.

Abstract: A valve plug is biased inwardly by a spring (90) to close an opening (10) in a cap (2) for a fuel tank filling and venting tube. A valve stem includes a first portion (62) which is engaged by the spring (90) and a second float cage portion (40) that is secured to and extends axially inwardly from the plug. A collapsible retainer (70) is secured to the cage (40) and has an abutment surface (74) which engages an abutment surface (68) on the first portion (62) to hold the cage (40) and the first portion (62) in position relative to each other and to transmit axial forces therebetween. A fusible material ring (88) is positioned radially between the retainer (70) and the cage (40) to prevent the retainer (70) from collapsing. At elevated temperatures, the ring (88) melts to allow the retainer (70) to collapse, the cage (40) and first stem portion (62) to separate from each other, and the valve plug and cage (40) to move away from the opening (10).

Abstract: A fuel check valve assembly for use in a fuel tank has a valve seat which is movable upwardly together with a float valve upon increase of a pressure within the fuel tank. Upon further increase of the pressure within the fuel tank, the valve seat is separated from the float valve and solely moves upwards to open the aperture of the valve seat for venting fuel vapor in the fuel tank.

Abstract: An apparatus is provided for controlling flow of liquid through an aperture. The apparatus includes a housing and a float valve disposed in and unattached to the housing. The float valve is formed to include a float chamber and is movable in the housing between an aperture-blocking position and an aperture-unblocking position. The apparatus further includes a mechanism for controlling movement of the float valve by selectively venting fluid from the float chamber to reduce the buoyancy of the float valve.

Abstract: A valve is provided for use with a pressurized dispenser of the type intended for both upright and inverted operation. The valve includes a valve body having an inclined inverting fluid chamber which houses a weighted ball. A pick-up tube is connected to each end of the inclined chamber, one is directed to the lower end of the container and the other to the upper end. The ball is movable within the inclined chamber between one end and the other and is adapted to close off one of the inlets, depending on which end it is located. External forces such as gravity or those forces developed during shaking or swirling movement of the container influence the location of the ball within the chamber. A stem portion of the valve includes an upper nozzle output and a lower divider portion. The divider is adapted to enter the inclined chamber during depression of the stem and retain the immediate location of the ball (one end or the other) prior to the valve opening.

Abstract: A fuel cap includes a float valve assembly for minimizing discharge of liquid fuel splash from the filler neck through the pressure-relief vent passage during normal vehicle operation. The float valve assembly is compatible with a controllable pressure-relief valve in the cap that permits venting of the tank under normal conditions and controls fuel leakage from the cap during a roll-over condition.

Abstract: A gravity and acceleration responsive valve apparatus having a housing with a number of inlet ports through which communication is controlled by respective valve members. The valve members in conjunction with space maintaining weight transfer means movable in the housing respond to acceleration force and to gravity to open only selected inlet ports while maintaining all other ports closed. The valve has utility particularly as a tank vent or liquid pickup valve aboard aircraft.

Abstract: A gravity responsive regulation valve assembly having a housing with at least two intake ports both of which may fluidically communicate with an outlet port. The valve assembly further includes a spherical valve actuator moveable along a predetermined path of travel in response to gravitational and/or centrifugal forces for automatically closing one of the valve assembly intake ports when the housing is tilted.

Abstract: A device for trapping fuel vapors during the refuelling of a fuel tank having a vapor control valve and which during refuelling, is moved into an open position provided outside the tank filler pipe safety valve which closes under the influence of gravity due to certain inclined positions of the fuel tank is connected upstream of the control valve, so that no fuel can escape through the vapor vent line in the case of a crash, even if the control valve no longer closes.

Abstract: A specially designed vapor storage canister may be placed within the interior volume of a fuel tank, eliminating the need for a tank to canister vapor line and shortening the TVVA to canister vapor line, while still protecting the adsorbent bed against contamination by liquid fuel.

Abstract: A closing arrangement for a vent line of a fuel tank includes a housing with an inlet and an outlet as well as a closing device which is actuated as a function of the position of the vehicle. The closing device includes a mass part and a closing part, the latter closing a connecting opening in the housing when the vehicle is in an inclined position. In order to provide a closing arrangement that functions well even in the case of an intensified gasification of the fuel, two chambers located above one another are provided inside the housing and are connected with one another via the connecting opening, in which case the mass part is arranged in one chamber and the closing part is arranged in the other chamber, and a connecting element extends between the mass part and the closing part that penetrates the outlet opening and, in sections, projects into both chambers.

Abstract: A valve device for preventing fuel effusion from a fuel tank, including a casing having an inlet port in the forward position and an outlet port in the rearward position for evaporated fuel, a valve body disposed in a casing so as to be movable in the direction along the axis line connecting the inlet port and the outlet port so that it can interrupt the communication between the inlet port and the outlet port, a steel ball disposed in the valve body so as to be movable rollingly in the direction of said axis, thereby moving the valve body by the rolling action. The axis is arranged so as to be slanted by a specific angle with respect to the horizontal direction of a vehicle body, thereby making it possible for the valve body not to maintain the communicaiton interruption between the inlet port and the outlet port when the fuel level variation in the fuel tank becomes remarkable.

Abstract: A conical vent (14) for a cartridge (10) is located on an inner surface (20) of the cartridge. The conical vent includes a conical-shaped member (26) having a base (28) and an apex (30). An opening (32) extends through the center of the conical-shaped member (26) to provide an air passage for a cartridge (10). The opening (32) is adapted to create a capillary force on a small amount of liquid (59) that might enter the opening to prevent any remaining liquid from leaking through the opening. The vent also includes a groove or capillary trap (34) that encircles the base of the conical-shaped member. Also, a pair of upright walls (36) and (38) surround the conical-shaped member and cooperate with the capillary trap to divert liquid to the base of the conical-shaped member and away from its apex.

Abstract: A fuel cap for use in a vehicle fuel system filler neck is provided. The fuel cap includes a closure for closing the filler neck and a pressure relief valve that is movable between a filler neck-venting position and a non-venting position. A roll-over control assembly is provided for selectively utilizing liquid fuel and fuel vapor in the filler neck to exert a closing force on the pressure relief valve so that the pressure relief valve is moved to its non-venting position to block discharge of liquid fuel to the atmosphere through the pressure relief valve during vehicle rollover. The roll-over control assembly cooperates with the pressure relief valve to define a venting control chamber for containing fuel and a fuel vapor in a predetermined region to permit the fuel and fuel vapor to exert the closing force on the pressure relief valve. A passageway is provided for establishing communication of fuel and fuel vapor in the filler neck with the venting control chamber.

Abstract: The device comprises, on one hand, a degassing tube (5) having one end (5a) which opens onto the upper inner part of the tank, markedly lower down than an upper wall (2) of the tank, and, on the other hand, a pipe (8) connecting the inner part to the exterior of the tank through a valve (V) carried by the wall (2), the valve being of the normally open ball (19) and float (10) type, the float (10) extending sufficiently downwardly to be raised by the fuel (7) when the latter reaches said end (5a), the lower end (10B) of the float (10) being lower than the end (5a) of the tube (5), and means are provided to ensure that this raising closes the valve (V) in a partly opened state. This device ensures simultaneously a permanent communication of the inside of the tank (1) with the atmosphere, a guarantee of an integrated expansion volume in the tank, and the prevention of flow of fuel in the event of an overturning of the vehicle.

Abstract: A fluid outlet opening/closing mechanism and a fluid storing member equipped with this mechanism including a valve seat having a portion formed of a magnetic material, housed in the fluid storing member and adapted to be attached to an outlet portion of the fluid storing member, and a valve member having a portion formed of a magnetic material and adapted to be seated on the valve seat. At least either of the magnetic portions respectively of the valve seat and of the valve member is constituted by a material capable of generating a magnetic field.

Abstract: A fuel vapor recovery system of a motor vehicle is disclosed including a valve. The valve is situated between a fuel tank and a conduit leading from the fuel tank to a canister. The valve includes a chamber having a first opening to the fuel tank and a second opening to the conduit. The valve also includes a ball for closing the first opening, the ball having a mass selected to effect a first closing pressure on the first opening when the vehicle is stationary. The size of the ball is selected relative to the chamber to permit movement within the chamber to effect a second closing pressure less than the first closing pressure when the vehicle is subjected to vibration. The first closing pressure is selected to produce a predetermined head pressure in the fuel tank during introduction of fuel into the fuel tank which effectively blocks the introduction of fuel in excess of a predetermined maximum fuel capacity, thereby preventing overfilling of the fuel tank.