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| Number | Title | Issue Date |
| 8091581 | Fluid level control toggle valve device and method A water level control device has connected tubular housings, one serving as a support for a hose connection and the other serving to support a valve housing assembly for operation of a toggle valve within the valve housing. An airtight float serves to raise the one ... | 01/10/2012 |
| 7395633 | Rainwater collection and diverging system A rainwater collection and diverging system includes a housing that has a bottom wall and a perimeter wall. A door is positioned in the bottom wall. A hinge hingedly couples the door to the bottom wall and a biasing member is attached to the door and biases the door... | 07/08/2008 |
| 7357149 | Auxiliary fuel tank systems for aircraft and methods for their manufacture and use Auxiliary fuel tank systems for aircraft and methods for their manufacture and use. In one embodiment, an aircraft can include a fuselage, at least one engine, and a fuel system configured to distribute fuel to at least one of the engine and an aerial refueling mani... | 04/15/2008 |
| 7334600 | Priming apparatus for a centrifugal pump A vacuum assisted priming system for a fluid pump including a housing defining a hopper that communicates with a pump inlet. The housing mounts a first port that communicates with the source of vacuum and a second port that communicates with atmosphere. A check valv... | 02/26/2008 |
| 7331365 | Lavatory service shut-off valve A shut off valve (10) is provided for use in an aircraft lavatory system (70) during maintenance sanitizing operations. The shut off valve includes an inlet passage (20) in intermittent fluid communication with an outlet passage (30) and ... | 02/19/2008 |
| 7243675 | Drop tube segments adapted for use with a liquid reservoir A drop tube segment is adapted for use with a liquid reservoir. The drop tube segment includes a conduit with an end portion and a sidewall including a sidewall portion at least partially defining an interior housing area. The drop tube segment further includes a va... | 07/17/2007 |
| 7243669 | Float-responsive valve with premature closure prevention A float-responsive valve includes a valve actuator that is selectively responsive to operation of a float to move from a first position to a second position in which the valve actuator holds the valve element in its open position. When the valve actuator is in the s... | 07/17/2007 |
| 7213610 | Drop tube segments adapted for use with a liquid reservoir and methods Drop tube segments are provided. Each drop tube segment may be attached to another drop tube segment of a drop tube assembly. The drop tube segments include a wall with a fastener receiving structure that is devoid of any opening extending between inner and outer su... | 05/08/2007 |
| 7089974 | Float operated overfill protection device A fuel storage tank includes an overfill protection device for shutting off the flow of fuel into the tank via a fuel fill tube when the contents of the tank reach an intended maximum fill level. The overfill protection device includes a butterfly valve located with... | 08/15/2006 |
| 7047999 | Humidification chamber with float-valve having improved float A method is disclosed for the manufacture of a float (30) comprising the following steps: providing a mould (10) having a first enclosure (12) opening into a second enclosure (14) of greater dimensions than the first enclosure (12)... | 05/23/2006 |
| 7044165 | Outflow regulator for a gravity-fed liquid outlet An outflow regulator for a gravity-fed liquid outlet of a liquid reservoir comprising a restriction plate mountable within the liquid outlet for limiting a flow rate of an effluent. The restriction plate allows a lower passage for the effluent when a first level of ... | 05/16/2006 |
| 6966334 | Float valve for a christmas tree watering system The float valve has a water inlet, a perforated bottom surface and a lift valve mounted between the water inlet and the bottom surface. A float and a rocker arm are used to raise and lower the disc of the lift valve in response to a water level inside the housing. T... | 11/22/2005 |
| 6886589 | Float valve The float valve (11) controls water level e.g. in an associated plant pot. A housing (21) has a water inlet (25) with an inlet port (26), a float (31) able to rise and fall with the level of the water in the housing (21), a ... | 05/03/2005 |
| 6874529 | Level limit valve The invention concerns a level limit valve for the fuel tank of a vehicle. Such valves serve the purpose, that upon the filling of the fuel tank, the filled quantity of the fuel is limited. The proposed level limit valve possesses a valve body 1 which can be ... | 04/05/2005 |
| 6729368 | Lavatory service shut off valve 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 p... | 05/04/2004 |
| 6499503 | Backflow valve A backflow valve has a closure gate that is pivotally mounted for movement between an open position in which the closure gate is positioned on a plane substantially parallel to a longitudinal axis of a flow passage and a closed position in which the closu... | 12/31/2002 |
| 6446665 | Backwater valve A backwater valve includes a body having a flow passage extending therethrough with an inlet side and an outlet side. A closure gate is pivotally mounted within the body above the inlet side of the flow passage. The closure gate has an open position above... | 09/10/2002 |
| 6419662 | Continuous irrigation Y-tubing control valve device and system The present invention is a continuous irrigation system for medical applications, including transurethral resection procedures, which provides automatic bag switching. It includes: (a) a first and second liquid irrigation bag; (b) a first proximal tubing ... | 07/16/2002 |
| 6318404 | Backflow valve A backflow valve which includes a closure gate pivotally mounted along a substantially vertical pivot axis to one of the opposed sides of the valve body. A closure gate engaging profile positioned in a bottom of the valve body locks the closure gate in th... | 11/20/2001 |
| 6305411 | Normally-open backwater valve A backwater valve (for preventing the flow of liquid in a reverse direction when water backs up in the valve) has a gate which sealingly engages the input opening to the valve chamber so as to prevent the flow of water out of or into the input opening. Th... | 10/23/2001 |
| 6148852 | Sump pit regulating valve A valve assembly that is composed of simple parts is described that is used to provide a sump pit water control device that operates due to the level of water within the sump and not by electricity. This valve assembly includes an adapter in the form of a... | 11/21/2000 |
| 6138707 | Fuel storage tanks An air transfer valve is disclosed comprising a housing (8) having an inlet (21) and an outlet (22), the outlet being controlled by a first non-return, valve (28) which is biased to its closed position and the outlet being controlled by a second valve (30... | 10/31/2000 |
| 6089258 | Float valve assembly for a water purification system An improved float valve assembly is provided for regulating water inflow to a purification module of a water purification system, such as a reverse osmosis purification module or the like. The float valve assembly is mounted within a reservoir for receivi... | 07/18/2000 |
| 6062255 | Float valve assembly for a water purification system A float valve assembly is provided for regulating water inflow to a purification module of a water purification system, such as a reverse osmosis purification module or the like. The float valve assembly is mounted within a reservoir for receiving and sto... | 05/16/2000 |
| 5988201 | Automatic vent having a multi-hinged valve An automatic vent has a cup including a bottom wall, a side wall, an open top, and an inlet for introducing fluid into a compartment defined by the bottom and side walls. A valve assembly of the automatic vent includes a cap disposed over the open top of ... | 11/23/1999 |
| 5899227 | Air transfer valve for fuel storage tanks In a fuel storage tank having a fill pipe arranged to discharge within the tank below the normal liquid level in the tank, an air transfer valve is mounted within the fill pipe above the normal maximum liquid level, the valve being normally closed and hav... | 05/04/1999 |
| 5894858 | Device for shutting off the feed or discharge pipe of a mobility separator There is described a device for shutting off the feed or discharge pipe (1) of a mobility separator, comprising a shutting flap (3) which in dependence on the position of a float (2) can be swivelled from an open position into a closed position about a ro... | 04/20/1999 |
| 5839465 | Above-ground tank auto-limiter An above-ground tank auto-limiter is provided for preventing the overflow of fluid in storage tanks. The auto-limiter includes a valve assembly insertible downward through the top of a fill pipe of the fuel storage tank. The valve assembly has a cylindric... | 11/24/1998 |
| 5755257 | Retention gate A retention gate (20) is pivotable about a horizontal pivot shaft (22) mounted near the gate's upper edge and is located behind the overflow sill (14) of a storage drainage opening (12), said retention gate in its closed position being in sealing contact ... | 05/26/1998 |
| 5655565 | Above-ground tank auto-limiter An above-ground tank auto-limiter is provided for preventing the overflow of fluid in storage tanks. The auto-limiter includes a valve assembly insertible downward through the top of a fill pipe of the fuel storage tank. The valve assembly has a cylindric... | 08/12/1997 |
| 5573031 | Air bleed valve An air bleed valve has a movable float in a valve housing and a lever system with a valve plate to open and close an outlet. The valve plate acts with an energy accumulator. The lever system imparts to the valve plate a tipping motion which opens or close... | 11/12/1996 |
| 5564465 | Fill restricting drop tube A drop tube for underground fuel storage tanks and the like has a flow restriction section that includes a plate or disc mounted for rotation and controlled by a float located outside the section. Unlike overfill shut-off valves that slam against a sealin... | 10/15/1996 |
| 5553636 | Watering through fill valve control For use with a watering trough fill control valve having float structure located to rise as water is filled into the trough via the valve, and to effect closing of the valve when the trough is filled to predetermined extent, the float structure located to... | 09/10/1996 |
| 5533545 | Drain system This invention involves a liquid drain system with liquid entrance and exit components to be used in or with compressed air systems. The system has a reservoir to hold accumulated liquid and a float in the reservoir that will be movable with the liquid le... | 07/09/1996 |
| 5518024 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 05/21/1996 |
| 5462075 | Method and device for controlling a flow of fluid The method relates to a method and a device for controlling the flow of a liquid. In a well (10) having at least one inlet (11) and one outlet (12) the areas of said inlet (11) is adjusted in dependence on the liquid level in said well (10) by a floating ... | 10/31/1995 |
| 5419359 | Gas and liquid backflow-preventing valve device for drains A valve device for use with a drain provided with a pipe having an entrance for collecting liquid leading to a P-trap beneath the entrance. The device comprising an open vessel, in use positioned at the entrance of the pipe, having walls and a floor defin... | 05/30/1995 |
| 5406972 | Backwater valve A backwater valve is described which includes a liquid retaining body having a top, a bottom, a first end, a second end, opposed sides and an inner chamber. A first flow conduit extends through one of the top of the body and the first end adjacent the top... | 04/18/1995 |
| 5398735 | Filling regulator for liquid storage tank 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 install... | 03/21/1995 |
| 5398722 | Automatic control valve and method A compact, self-contained, automatic flow control and venting apparatus for the automatic interruption of liquid flowing into a liquid storage receptacle during the refilling process is disclosed wherein a dual-chambered, offset valve mechanism is control... | 03/21/1995 |
