Abstract: A fuel tank for vehicles has a filler tube and a filling level limiting device, with the filler tube comprising, in the interior of the fuel tank, a closing device which interacts with an actuating device which is composed of: a) a frame which is fastened in the interior of the fuel tank and which has a force store which actuates the closing device; b) a locking arrangement which holds the force store in the stressed state; c) a release mechanism which is operatively connected to a float; and d) a stressing mechanism for stressing the force store. The actuating device ensures that a flap closes precisely when a nominal filling level is reached, and does not open again even under intense fluctuation of the liquid level.

Abstract: A system, for preventing overflow in a tank, fillable via a nozzle, includes a lower passage and an upper passage. An upper end of the lower passage receives a portion of fuel flow from the nozzle, and a lower end is in communication with the tank. The upper passage has a lower end in communication with an interior of the lower passage and an upper end in communication with a hole in the nozzle. A valve connects to the lower passage and has a fill position and a stop position. When a level of liquid in the tank is below a predetermined level, the valve is in the fill position and fuel is permitted to flow out the lower end of the lower passage. When the level of liquid in the tank is at or above the predetermined level, the valve is in the stop position and blocks the flow of fuel out of the lower end of the lower passage.

Abstract: The present invention relates to a simple fuel vent assembly for use in inboard and outboard fuel tanks for marine vessels. The vent assembly includes upper and lower portions defining an L shaped interior passageway. The lower portion includes upper and lower valve seats positioned within this passageway. Spaced vent openings extend through the lower portion above and below the valve seat. A spherical float is positioned within the passageway between the upper and lower valve seats. As fuel is added to the tank, pressure can escape through the fuel vent. The flow valve is within the passageway as the level of liquid fuel in the tank rises during the fuel refilling process. When the tank is at its desired fill level the float engages the upper valve seat and forms a seal preventing liquid fuel from traveling past the upper seat and through the passageway into the atmosphere outside the tank. The second vent opening remained open to vent pressure from the space between the top of the tank and the fuel level.

Abstract: The present invention relates to a simple fuel vent assembly for use in inboard and outboard fuel tanks for marine vessels. The vent assembly includes upper and lower portions defining an L shaped interior passageway. The lower portion includes upper and lower valve seats positioned within this passageway. Spaced vent openings extend through the lower portion above and below the valve seat. A spherical float is positioned within the passageway between the upper and lower valve seats. As fuel is added to the tank, pressure can escape through the fuel vent. The flow valve is within the passageway as the level of liquid fuel in the tank rises during the fuel refilling process. When the tank is at its desired fill level the float engages the upper valve seat and forms a seal preventing liquid fuel from traveling past the upper seat and through the passageway into the atmosphere outside the tank. The second vent opening remained open to vent pressure from the space between the top of the tank and the fuel level.

Abstract: A shut off valve is provided for use in an aircraft lavatory system during maintenance sanitizing operations. The shut off valve includes an inlet passage in intermittent fluid communication with an outlet passage and a magnetic flapper body movable between a rest position and a seal position between said inlet passage and said outlet passage. The flapper body is moved by a magnetic actuator whereby upon placing said magnetic actuator within the proximity of the flapper body, the flapper body is moved from the rest position and, with the assistance of fluid flow within the valve, into the seal position, thus, preventing fluid communication between the inlet passage and the outlet passage.

Abstract: A safety valve assembly for use with a portable container, such as for dispensing fuel to a vehicular gas tank, where the valve assembly features a pair of fluid sealing members to be manually activated to effect dispensing of the fluid from the container. A first of said sealing members includes a magnetizable float member that further functions to automatically shut-off the fluid dispensing procedure before the receiving receptacle overflows, thus avoiding a problem with unwanted spillage. The second sealing member is activated by applying pressure to the container against the receiving receptacle, whereby premature spillage is further avoided during transporation of the fluid filled container. Finally, a rotatable lock mechanism, in the form of a camming system, is provided.

Abstract: A system for preventing spillage from containers during the filling thereof includes an electrical circuit extending between one or more filling ports of the container and being connected with one or more liquid level sensitive switches within the container. A liquid dispensing apparatus for dispensing liquid into the container is coupled to the circuit so as to be enabled to dispense liquid into the container when the circuit is closed and to be disabled from dispensing liquid into the container when the circuit is opened. The circuit includes electrically isolated leads at each of the one or more filling ports that can be connected with each other so as to complete the circuit at that port when either the filling port is properly capped or the liquid dispensing apparatus is properly coupled to the port.

Abstract: A snap-action flow interrupt device for terminating flow into a cryogenic storage container utilizes the momentum of the incoming liquid spray as a means of maintaining a float in a submerged position until the proper liquid level is attained. The incoming spray of liquid exerts a downward impact force on a surface of the float. The rising liquid level exerts an upward and increasing buoyant force on the float. When the rising liquid in the tank disrupts the spray, the buoyant force snaps the float upwards to interrupt the flow of liquid. The abrupt motion of the float generates a pressure spike and flow reduction, either of which may be easily detected by automatic fill termination devices or by a human operator.

Abstract: A liquid storage tank overfill prevention assembly that includes an outer housing, an insert that includes fill flow ports, a shut-off sleeve to slowly close off the flow ports and a float member for controlling the sleeve in response to the rise of the stored liquid level. As the product flows through the assembly it is diverted through flow ports in the insert to the inside of the outer body and through the fill pipe installed in the bottom of the valve. As the product level in the tank increases, the float rises and the shut-off sleeve relatively slowly covers or closes the flow ports in the insert. The shut-off is gradual and no hydraulic shock is felt through the valve. For further benefit, the shape of the shut-off sleeve diverts the liquid flow steam through the ports and is shaped to maintain substantial laminar liquid flow until the liquid exits the ports into the housing interior.

Abstract: A filling regulator for a liquid storage tank of the type according to which a float is displaced vertically in the float chamber provided in the body of the regulator. The regulator includes a deflector slanted over the inner wall of the body and installed above the gate at a far enough distance above the float chamber to allow the gate to be positioned in the full-open position. The deflector includes slanted, spaced-apart blades which are joined at their lower ends by a protective base.

Abstract: A two-stage float actuated shut-off valve for use in underground fuel storage tanks utilizes a drop tube coaxially mounted within the storage tank fill pipe. Fuel flowing into the tank is passed through the drop tube which projects downwardly into the interior of the tank to a valve housing located at the lower end of the drop tube. Floats slidably mounted in a recessed area in the housing outside of the drop tube within the tank independently operate pivoted valve doors to a closed position within the valve housing, a lower float closing one valve door to block a major portion of incoming fuel flow passage when the level of fuel in the storage tank reaches a predetermined first level and a second upper float causing the secondary valve door to overlap an aperture in the main valve door to almost completely close the flow of fuel to the tank.

Abstract: A funnel body includes an exit tube, wherein a mesh web pocket is arranged for securement to a lowermost end of the exit tube secured to an annular groove, with the pocket including a buoyant sphere arranged for projection into the exit tube exit opening for curtailing fluid flow therethrough.

Abstract: A drop tube employed in the discharge of fuel into a storage tank of the type having an inlet, riser pipe is described. The drop tube a tubular member and an overfill valve. The overfill valve comprises a valve member having open and closed positions which is controlled by a float mounted thereon. The drop tube is insertable through the riser pipe to a position wherein the float displaces the valve member towards its closed position when the fuel in the tank reaches a desired level. A depression in the tubular member receives the float to facilitate insertion of the drop tube through the riser pipe. The valve member is freely pivotal from its open position to its closed position, being displaced thereto by the force of fuel discharged into the tank. A pressure relief valve provided to reduce the forces on the valve. A bleed valve is also provided for bleeding fuel from above the valve when it is in its closed position.

Abstract: A float type liquid level meter is provided having an enhanced resistance against vibration transmitted from outside of the float type liquid level meter. The inventor obtained a finding that an external vibration is amplified with a connecting lever which is composing a part of the float type liquid level meter and a fluctuation of an output signal of the float type liquid level meter is proportional to the vibration of the connecting lever. An enhanced resistance against vibration is achieved by providing a connecting lever having a structure which prevents the connecting lever from generating vibration of a low order mode.

Abstract: In combination with a portable liquid container such as a bucket (20), a liquid-dispensing device (26) is disclosed. Device (26) automatically meters a desired quantity of a dilutable liquid concentrate into bucket (20) whenever bucket (20) is filled to a predetermined level with a suitable diluting liquid. Device (26) comprises a frame (28), a pump (40) mounted on frame (28), and a flexible-plastic pouch (56) containing the liquid concentrate and hung from frame (28). Frame (28) is carried atop a sidewall portion of bucket (20). Pump (40) includes a pump inlet (42), a pump outlet (44), and a pump chamber (46). Pump chamber (46) is in fluid communication with pump inlet (42) and outlet (44). Pouch (56) includes a valved outlet (96) so dimensioned relative to pump inlet (42) as to be removably snugly engaged with pump inlet (42) in a fluid-tight manner.

Abstract: A multi-functional control valve system for an LPG tank. The valve system comprises, on a single frame, a fill port for delivery of LPG from a supply source to the tank, a manual shut-off valve for the fill port, a delivery port, independent from the fill port, for passage LPG from the tank to a delivery line for utilization at a location remote from the tank, a manual shut-off valve for the delivery port, fuel level monitor associated with a frame responsive to the level of LPG in the tank and an automatic shut-off associated with the fuel level monitor and positioned in the fill port automatically to move to close the fill port and stop delivery of LPG to the tank when the fuel in the tank reaches a predetermiend level, and automatically releasable from that closed position when LPG in the tank falls below that level, as indicated by the monitor.

Abstract: A float chamber located in generally parallel, laterally spaced relationship to the main liquid flow passageway contains superimposed floats that move along a substantially linear path of travel. The floats cooperate with other control components to effect closure of a main valve assembly when the liquid level adjacent the mechanism reaches a preselected first elevation, and to close a bleed valve assembly when the liquid level reaches a second, higher elevation. The main valve assembly includes a movable plate valve that is spring biased toward an open position and that is biased toward a closed position by the force of liquid adjacent thereto and upstream therefrom. A latch and associated catch prevent movement of the valve plate to its closed position until such time as the liquid level reaches the first elevation.

Abstract: A drop tube employed in the discharge of fuel into a storage tank of the type having an inlet, riser pipe is described. The drop tube a tubular member and an overfill valve. The overfill valve comprises a valve member having open and closed positions which is controlled by a float mounted thereon. The drop tube is insertable through the riser pipe to a position wherein the float displaces the valve member towards its closed position when the fuel in the tank reaches a desired level. A depression in the tubular member receives the float to facilitate insertion of the drop tube through the riser pipe. The valve member is freely pivotal from its open position to its closed position, being displaced thereto by the force of fuel discharged into the tank. A pressure relief valve is provided to reduce the forces on the valve. A bleed valve is also provided for bleeding fuel from above the valve when it is in its closed position.

Abstract: A valve device serving to prevent overfilling of portable containers, particularly liquid gas cylinders, includes a ball which is freely rotatable relative to a spherical seating face in a casing having a filling channel extending to said seating face. The ball has a through passage which in the prescribed filling position communicates with the channel, and the ball is connected to a load member tending to keep the ball, and thus its passage, in a given orientation so that the communication is broken when the container is tilted away from the prescribed filling position.The device further includes a valve member controlled by a float and operative to interrupt the filling operation after a predetermined filling level has been reached in the container.

Abstract: A valve assembly, mountable on a propane or LPG cylinder, has a gate valve to regulate flow. An auxiliary valve element is movable in response to the liquid level within the tank, and to pressure differentials in the outflow direction. The auxiliary valve interrupts flow through the valve to prevent an overfill condition, or if the valve's outlet communicates with atmospheric pressure, or if the cylinder is knocked over.

Abstract: An overfill valve having a saddle-shaped, flapper valve element located within an inlet pipe and a mating valve seat disposed about the inner wall of the pipe. A spring couples a weighted float to the valve element and extends generally outward from the pipe. The float moves the valve element from a normally open position to a closed position as the float is raised. A controlled drain aperture through the valve element permits standing fluid within the pipe to drain. The spring allows the float to be moved to permit the pipe to be slid down a storage tank casing. A triggering mechanism is coupled to the float and valve element so that the float shifts a triggering element into the liquid flow through the valve, and the force of liquid flow against the triggering element forces the valve element toward the closed position.