Patents - stay tuned to the technology

Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS

Subclass of:

137 - Fluid handling

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
137409000 By float controlled valve 87
137395000 Control of outflow from tank 28
137391000 Control of both inflow and outflow of tank 6
137392000 Electrical characteristic sensing 5
20090139584Valve Assembly With Overfill Protection Device And Capacitive Liquid Level Gauge - A valve assembly, such as a tap for a liquefied gas cylinder, includes an overfill protection device and a liquid level gauge having an electrode assembly comprising a pair of lamellar electrodes mounted closely adjacent a housing member of the overfill protection device and deflectable into close proximity with a float of the overfill protection device for insertion into the gas cylinder. A circuit board is provided, preferably mounted on the electrode assembly, and has an electronic converter circuit for measuring the electrical capacitance between the electrodes and producing in response to the measured capacitance an output signal representative of the liquid level in the container. A display means is mounted on a body of the valve assembly or remote therefrom, to indicate the liquid level in the container in response to the output signal from the electronic converter circuit.06-04-2009
20100032026MONITORING DEVICE OF THE FEED TO AN ELECTRIC HOUSEHOLD APPLIANCE OF AN OPERATIVE FLUID, IN PARTICULAR OF A FLOW OF WATER TO A TANK OF A WASHING MACHINE OR DISHWASHER - A monitoring device including first detector means of a flow rate of operative fluid in an electric household appliance towards a tank of the electric household appliance and second detector means of the level of such a fluid in the tank; wherein the first and second detector means are operatively and reciprocally associated to issue a single signal (S) characterised by at least two different parameters, a first parameter (F) correlated to the flow rate of the fluid and a second parameter (A) correlated to the level of fluid in the tank. Typically, the first and the second detector means consist of a turbine mounted so as to be crossed in use by the flow of operative fluid and thereby turned at a speed proportional to the flow rate of fluid; in a membrane mounted within a casing to fluid-tightly divide the same into a first and second chamber connected respectively to atmospheric pressure and to siphon means arranged within the tank; in sensor means mounted on the membrane integral with the same and in interaction means with the sensor means, angularly and integrally mounted on the turbine and in a position so as to periodically transit in use in front of the sensor means in consequence of the rotation of the turbine.02-11-2010
20120152374AUTOMATIC SMART WATERING APPARATUS - The present invention provides a smart water flow apparatus capable of maintaining a desired level of water in a reservoir while having an override or shutoff feature that is programmable to address variations in water pressure or to prevent flooding.06-21-2012
20140158225Condensate Liquid Level Control System - A condensate pump system for collecting condensate liquid within a reservoir 06-12-2014
20220137650Automated Tank Systems and Methods for use in Oil and Gas Extraction Operation - A method of storing fluid from an oil well includes the steps: providing storage tanks; providing a diversion tank; coupling a fill manifold to the storage tanks and to the diversion tank, the fill manifold having a first control valve controlling flow of the fluid to the storage tanks, the fill manifold having a second control valve controlling flow of the fluid to the diversion tank; associating a sensor with at least one of the storage tanks without accessing a top of any of the storage tanks, the sensor being configured to determine a volume of the fluid within at least one of the storage tanks; associating a control system with the fill manifold and the sensor; and actuating the first and second control valves using the control system in response to at least one detection by the sensor to ensure that the storage tanks are not overfilled.05-05-2022
137403000 By weight of accumulated fluid 4
20140076422Hanging port water indicator - A hanging pot water indicator having a hollow tubular spring housing, a cap on the upper end of the tubular housing, a hollow tubular sliding sleeve telescopically slidable, an opening in the cap, a coiled extension spring within the tubular housing and the sleeve, an upper wire extension portion extending from the upper end of the spring passing through the opening in the cap, and defining an upper hook, and a lower wire extension on the lower end of the spring, extending from the sleeve and formed to define a lower hook.03-20-2014
20090000671DISHWASHER WITH INTEGRATED LIQUID LEVEL DETECTOR - A device for detecting the liquid level in a tank of an electric household appliance includes an airtight bell connected on one side to the tank and on the opposite side to a pressure switch by means of a hose-carrier nipple. As the water level of the tank increases, the pressure of the air trapped in the bell increases, which is detected by the pressure switch. The airtight bell is defined by a rectilinear tube which obliquely protrudes from underneath the tank and externally to the same, towards a front panel of a casing of the household appliance for convenient access and easy cleaning. A shielding means within the tank is arranged in front the rectilinear tube to create a siphon between the bell and the tank and to prevent the water level in the tube from dropping past a minimum point.01-01-2009
20140069526Hanging pot water indicator - A hanging pot water indicator having a hollow tubular spring housing, a dust protector on the upper end of the tubular housing, the dust protector having a fastening collar fitting around the upper end of the tubular housing, a hollow tubular sliding sleeve, having an interior diameter greater than the exterior diameter of the tubular housing, and being telescoically slidable in respect thereof, a lower flared portion on the lower end of the sleeve, an opening in the dust protector, a coiled extension spring within the tubular housing and the sleeve, an upper wire extension portion extending from the upper end of the spring passing through the opening in the dust protector, and defining an upper hook, and a lower wire extension extending from the lower end of the spring, and formed to define a hook.03-13-2014
20150107697Automatic Adjustable Valve - A valve that switches between open and closed states includes a pivoting body having a reservoir, at least one filling port for filling the reservoir and at least one port for draining the reservoir, and a counterweight. The valve further includes a first conduit separate from the body, connected to the filling port, and having a water intake located at a higher position than the filling port, whether the valve is open or closed.04-23-2015
137389000 With second diverse control 3
20090277512SYSTEM FOR CONTROLLING FLUID LEVEL IN A SUMP - A system for controlling the level of hydraulic fluid between a first and second sump in a transmission includes a valve assembly located within the first sump. The valve assembly includes a valve that is moveable between two positions. The valve assembly includes first and second inlet ports that communicate with the first sump and an outlet port that communicates with the second sump. The second inlet port has an opening that is located higher than an opening to the first inlet port. Hydraulic fluid within the first sump communicates through the first inlet port to the outlet port when the valve is in the first position, and hydraulic fluid within the first sump communicates through the second inlet port to the outlet port when the valve is in the second position.11-12-2009
20100263742Water Shutoff System - A water shutoff system includes a water conduit having a passageway extending therethrough. The passageway includes an inlet in fluid communication with an outlet. Water enters the inlet and is released outwardly of the outlet. The inlet is couplable to a water supply and the outlet is couplable to a faucet. A valve is in fluid communication with the passageway. The valve is positionable in an open position allowing water flow through the passageway or in a closed position preventing water flow through the passageway. A drive mechanism is mechanically coupled to the valve. The drive mechanism is actuated to selectively alternate the valve between the open and closed positions. A control is operationally coupled to the drive mechanism to actuate the drive mechanism to open or close the passageway. The control actuates the drive assembly to close the passageway when a threshold limit has been achieved.10-21-2010
20140283928FLOW AMOUNT CONTROL APPARATUS - A flow amount control apparatus is configured to include a supply tank for storing a liquid, a main pipe having a first open end connected to the tank and a second open end disposed lower than the first end for transferring the liquid from the tank to the second end, a supply valve capable of preventing the liquid from flowing into the main pipe, the supply valve being placed between the tank and the second end, a branch pipe having a third open end connected to the main pipe at a position between the supply valve and the second end and a fourth open end disposed above the third end, a flow amount adjustment means for controlling an amount of the flowing liquid, a liquid level detection unit for detecting a liquid level in the branch pipe, a timer, and a controller for controlling the flow amount adjustment means.09-25-2014
137393000 With control fluid connection at desired liquid level 2
20130037129Integral Fluid Detection and Containment Apparatus - Disclosed are integral and/or portable, easy-to-install apparatuses for detecting and containing fluid leaked or otherwise discharged from a fluid-filled device and for facilitating testing and maintenance of the apparatus and fluid-filled devices. In one aspect of the disclosed invention, upon sensing a fluid discharge, the apparatus activates audible and/or visual alarms and directs the discharged fluid to a predetermined drainage area to prevent damage to areas surrounding the fluid-filled device. In another aspect of the present invention, no plumbing or electrical wiring is required to install the apparatus, thereby allowing an unskilled individual to easily and inexpensively install the apparatus. In yet another aspect of the present invention, the apparatus may be easily located since it is not dependent on gravity or a drainage pipe for discharge of the fluid. Furthermore, the apparatus optionally includes an integral leveling mechanism to accommodate leveling of the apparatus when placed on uneven surfaces.02-14-2013
20160040418Overflow Containment Assembly - A overflow containment assembly for containing an overflowed fluid from a toilet includes the toilet structured to have a bowl. A fitting is coupled to the bowl on the toilet. The fitting is positioned proximate a maximum fill level of the bowl. A bag is coupled to the fitting. The bag may receive a fluid from the fitting if the bowl on the toilet becomes overfilled.02-11-2016
137388000 Liquid excluding devices for gas inlet or outlets 2
20150308582Venting Systems and Methods - A vent system for an enclosure containing a liquid, the system comprising a vent module including a housing defining a passageway, a membrane maintained in the passageway, and a sorbent maintained in the passageway; and a flow control module associated with the vent module and including a valve having an inner channel through which air is able to flow in a first direction and a second, opposite direction through the valve, where the flow control module acts as a barrier to liquid flow through the valve from the enclosure toward the sorbent.10-29-2015
20150323093VALVE ARRANGEMENT FOR VENTING GAS FROM LIQUID CIRCULATING IN A SUBSEA PRODUCTION SYSTEM - A gas venting valve arrangement is disclosed, the gas venting valve arrangement comprising a valve housing having an inlet in a bottom region of the housing connectable to a fluid flow to be passing through a subsea pump or compressor, and an outlet for gas accumulating in a top region of the housing. A valve mechanism operating a movable valve body at the outlet' between open and closed positions. A floater in the housing actuating the, valve mechanism, wherein the floater is acted upon by a force means which is dimensioned to increase buoyancy of the floater with respect to a liquid phase of the fluid accumulating in a bottom region of the housing.11-12-2015
137400000 With supplemental or safety closing means or bias 2
20090277513Magnetically activated cut-off valve assembly - A cut-off valve assembly for use with a toilet tank, includes a float within the toilet tank, a water retaining float guide within the toilet tank which allows the vertical travel of the float, the water retaining float guide having weep holes below the lowest travel of the float. The weep holes slowly release the retained water when the water in the tank is below the weep holes, a magnet within the toilet tank, affixed to the bottom of the float, and a magnetically activated cut-off valve for cutting off the water flow to the toilet tank when activated by the magnet. The magnet will activate the magnetically activated cut-off valve when the float is at the lowest travel. A preferred form of the cut-off valve assembly also includes a stem affixed to the float and extending downward from the float. The magnet is affixed to the bottom of the stem, and the magnet is affixed to the float through the stem. In a preferred form, a magnet housing is affixed to the bottom of the stem. The magnet is secured within the magnet housing, and the stem is affixed to the magnet through the magnet housing. In such an arrangement, a guide shaft is located within the water retaining float guide, for guiding the vertical movement of the magnet housing.11-12-2009
20100051116PILOTED FUEL TANK VAPOR ISOLATION VALVE - A vapor isolation valve includes a first chamber in fluid communication with a fuel tank and a second chamber disposed with respect to the first chamber. A diaphragm is disposed between the first and second chambers, has an orifice allowing fluid communication therebetween, and is moveable between a diaphragm open position and a diaphragm closed position. A third chamber is disposed adjacent the first chamber, relative to the diaphragm, and is in fluid communication with an exit passage. The diaphragm open position allows fluid communication between the first and third chambers, and the diaphragm closed position substantially restricts fluid communication therebetween. A pilot valve is disposed between the second and third chambers and is selectively moveable between a pilot open position configured to allow fluid communication between the second and third chambers and a pilot closed position configured to block fluid communication therebetween.03-04-2010
137387000 Washing machine cycle control 1
20100175762Washing machine flood prevention system - The washing machine flood prevention system provides an interruptible power supply to a washing machine. In the event of potential flooding by the washing machine, power to the washing machine is interrupted and an alarm is delivered to the user. The washing machine flood prevention system includes a control box housing a control circuit. The control circuit includes at least one alarm and a power outlet adapted for receiving the electrical plug of the washing machine. A water level sensor, such as a float switch, is in communication with the control circuit. A ground fault circuit interrupter is in electrical communication with the control circuit. The ground fault circuit interrupter provides interruptible electrical power to the control circuit and the washing machine. The electrical power is interrupted if a control signal is generated by the water level sensor responsive to a flood.07-15-2010
Entries
DocumentTitleDate
20080202599FUEL LEVEL MEASUREMENT AND RUN TIME INTERPOLATION - At least one aspect of the invention provides an improved fuel sensing system for a generator, in addition, one or more other aspects of the invention provide improved systems and methods for determining remaining run-time of a generator system.08-28-2008
20080216900Automatic Fluid Flow Control Device - One embodiment of the invention provides a fluid control device for a fluid supply, the device comprising: a housing (09-11-2008
20080223452LEVEL DETECTION MODULE WITH LIQUID SUPPLY SYSTEM - A level detection module is capable of detecting level of liquid in a container and includes the first induction unit, the second induction unit and a detection unit. The first and second induction units are disposed at the first position and second position of the container respectively and output the first and second induction signals respectively according to change of temperature. The detection unit provides a controller with input ends corresponding to the induction units and at least an output end. The controller compares the difference between the first and second induction signals and outputs a control signal, which stands for the liquid reaches to the preset position, based on difference of the signals via the output end. Due to temperature of the liquid at the bottom of the container being different from the room temperature of the air at the top of the container, the level of the liquid is measured with the principle of the difference of temperature.09-18-2008
20080223453ETHANOL COMPENSATED FUEL DENSITY FOR FUEL CONSUMED CALCULATION - An engine control module determining an alcohol compensated fuel consumption value includes an alcohol percent module that determines an alcohol percent in fuel and a fuel mass module that determines a mass of the fuel. The engine control module also includes a fuel volume module that calculates a volume of the fuel based on the mass of the fuel, a density of the fuel, and the alcohol percent.09-18-2008
20080271790Method of operating a cooling fluid system - In a gravity fed cooling tower liquid return system having a common header with a plurality of valved sub-headers, a distributive control system, risers on the sub-headers, and sensor/transmitters on the risers, some of the sensor/transmitters controlling the valves on their respective sub-headers, sensing the liquid level in each of the sub-headers, comparing the sensed liquid levels in the distributive control system, and controlling the liquid levels in the sub-headers in response to the sensed liquid levels.11-06-2008
20090151795ICE TRAY WITH WATER LEVEL DETECTING DEVICE - An ice tray with water level detecting device includes an ice trench and a water level detecting device for detecting the water level of the water in the ice trench. The water level detecting device includes a radio frequency detecting device and a parameter setting unit. The radio frequency detecting device emits a radio frequency wave to the ice tray and the water and receives the reflection wave from the ice tray or the water. Here, the radio frequency detecting device has a decision level for deciding the strength of the reflection wave, so as to output a stop signal to stop the water supplying schedule. And, the parameter setting unit can alter the decision level for changing the water level of the ice tray. Therefore, through the structure described above, the water amount in the ice tray can be detected and controlled in an effective way.06-18-2009
20090199909DEVICE FOR SUPPLYING FUEL TO AN ENERGY PRODUCING INSTALLATION OF A SHIP - A device for supplying fuel from an onboard energy producing installation on a ship transporting liquefied gas from at least one tank (08-13-2009
20090250121Aquarium overflow system - An aquarium overflow system for use with an aquarium tank to drain water from the tank to a sump system comprises an overflow box, a through-the-wall attachment mechanism for attaching the overflow box to the inside of a wall of the tank, an adapter for connecting the attachment mechanism to a conduit that hydraulically connects to the sump system and a baffle system inside the overflow box for reducing noise and ensuring consistent flow. In a preferred embodiment, the attachment mechanism comprises a bulkhead adapter having an insert portion extending through the wall of the tank, a bulkhead cap and gasket pressing against the outer surface of the wall and a bulkhead nut pressing the back wall of the overflow box, with a gasket therebetween, against the inside surface of the tank wall. An adjustable vent tube in the conduit adapter further reduces the noise associated with the overflow system.10-08-2009
20090277511DIRT SEPARATOR DEVICE WITH LEVEL CONTROL - An apparatus for level control in a fluid tank is provided, wherein the fluid tank is designed to accommodate a supply of a fluid. The apparatus comprises at least one conveying line through which the fluid can flow and which has at least one control opening which is hydraulically connected to the fluid tank. The control opening is designed to at least largely prevent fluid flowing out of the conveying line and into the fluid tank when at least one minimum level in the fluid tank is exceeded, and wherein the control opening is further designed to allow fluid to flow out of the conveying line nd into the fluid tank when the at least one minimum level in the fluid tank is undershot.11-12-2009
20100326538Water recirculation system - The water recirculation system provides for the controlled recirculation of water between an overhead water tank, which is mounted on the roof of a building, and an underground water tank. The overhead tank has a feed outlet, a recirculation outlet, and a recirculation inlet formed therein. A first conduit is provided, with a lower end thereof being positioned within the underground tank. A pump draws water from within the underground tank, which is delivered to a second conduit. An upper end thereof is in fluid communication with the overhead tank. A third conduit is further provided, having an upper end in communication with the overhead tank and a lower end in communication with the underground tank. A programmable valve selectively controls water flow out of the overhead tank, which is delivered, via the third conduit, to the underground tank by gravity.12-30-2010
20110061748WATER APPLIANCE HAVING A FLOW CONTROL UNIT AND A FILTER ASSEMBLY - A water appliance (03-17-2011
20110146810SEWAGE FLUSHING - A sewer flushing device 06-23-2011
20110265889Automatic Urine Collecting Device - An automatic urine collecting device (11-03-2011
20110272043CONDENSATE REMOVAL SYSTEM AND METHOD - In an embodiment of the present disclosure, an apparatus for handling a fluid is provided. The apparatus comprising a reservoir having a basin which receives the fluid and at least a first port through which the fluid is evacuated; a pump housing including a fluid pump; a fluid conduit in fluid communication with the fluid in the reservoir through the first port of the reservoir and in fluid communication with the fluid pump; at least one sensor which provides an indication of a height of the fluid in the reservoir; and a conduit with a first aperture and a second aperture therethrough, wherein the reservoir and the pump housing are external to the conduit.11-10-2011
20110290343OPENING/CLOSING DEVICE - An opening/closing device 12-01-2011
20120018008Apparatus for supplying source - Disclosed herein is an apparatus for supplying a source for constantly maintaining a film source water level in a source reservoir.01-26-2012
20120211094TOILET FILL VALVE WATER LEAK AND OVERFLOW NOTIFICATION DEVICE - A device to shut-off a water supply to a toilet diverts water from a toilet fill valve to a shut-off valve that has a housing that includes a valve mechanism, a trip mechanism, and a trip circuit. The trip mechanism includes a rotational spring that urges closing of the valve mechanism. A trip latch is adapted to prevent closing of the valve mechanism except when withdrawn from the valve mechanism by a solenoid that is electrically connected to the trip circuit. The trip circuit includes at least one trip sensor input and a power source, such that when the trip circuit detects a fault condition on any of the trip sensors, the trip circuit connects power to the solenoid to withdraw the solenoid to close the valve mechanism. A rest knob may then be rotated to reset the valve mechanism into a valve-open position.08-23-2012
20120216881System and Method for Harvested Water Irrigation - A system and method for harvested water irrigation is provided. The irrigation system generally collects harvested water from a variety of sources and disperses it from a tank to a landscape for irrigation. The irrigation may be managed using a system controller. The system controller interacts with a variety of devices, including a level controller, a pump or valve, and at least one zone valve. The system may be configured to end irrigation cycles in response to certain events and to supplement harvested water irrigation with potable water as needed or selected.08-30-2012
20130126015FLUID STORAGE MANAGEMENT SYSTEM AND METHOD FOR MONITORING FLUID CAPACITIES AND FOR CONTROLLING THE TRANSFER OF FLUID CAPACITIES WITHIN A FLUID NETWORK - A fluid-reservoir management system for monitoring fluid capacities and controlling the transfer of fluid capacities within a fluid network includes a plurality of linked fluid reservoirs for storing the fluid capacities, a central computer unit in a communication network, the fluid reservoirs being linked to the communication network for transmitting data to and from the central computer unit, a communication portal provided in the communication network, a user interface for accessing the communication portal, a comparison unit for comparing fluid capacities and for comparing parameters of the fluid reservoirs and of the fluid network, and a control device for executing orders to transfer fluid capacities between at least two fluid reservoirs. The central computer unit coordinates the orders to transfer fluid capacities between at least two fluid reservoirs as a function of results of comparisons performed by the comparison unit and forwards the orders to the control device for executing.05-23-2013
20130199630GAS TURBINE ENGINE FUEL RETURN VALVE AND SYSTEM - A fuel return valve and system includes a flow-level select and shut-off valve and a servo control valve. The flow-level select and shut-off valve includes a first fuel inlet, a second fuel inlet, a return-to-tank fuel outlet, and a valve element movable between a shut-off position, a mid-flow position, and a max-flow position. The servo control valve is coupled to the flow-level select and shut-off valve and is configured to control relative fluid pressures therein to selectively move the valve element to the shut-off position, the mid-flow position, and the max-flow position.08-08-2013
20130213495LIQUID LEVEL SENSOR - A quartz glass liquid level sensor includes a support frame, a light masking plate, a quartz glass tube, and a sensor module. The light masking plate is movably mounted on the support frame. The quartz glass tube is movably mounted to the support frame. One end of the quartz glass tube is securely fixed to the light masking plate. The sensor module is mounted on the support frame, for sensing a position of the light masking plate relative to the support frame.08-22-2013
20130248018DOUBLE WALLED TANKS WITH INTERNAL CONTAINMENT CHAMBERS - A double-walled above-ground storage tank includes a primary tank and a secondary tank, and an interstitial space; an containment chamber formed by a primary chamber wall and a secondary chamber wall, forming a chamber interstitial space therebetween, and an exterior door assembly; and at least one pipe and valve assembly wherein the pipe originates in the tank interior volume and the valve is disposed within the chamber.09-26-2013
20130255797METHOD AND VALVE FOR THE VENTING OF A SADDLE FUEL TANK - A method for venting of a liquid tank with a valve, a primary compartment and a secondary compartment which are connected together via a bridge. The valve includes a chamber provided with a cover, which extends at least partly into the tank and is connected via an upper venting aperture to a venting circuit. A first device monitors a level of liquid in the primary compartment. A second device monitors a level of liquid in the secondary compartment. The valve configured to be closed when the first device detects that the level of liquid in the primary compartment is equal to or higher than a first predetermined filling level, and the second device detects that the level of liquid in the secondary compartment is equal to or higher than a second predetermined filling level.10-03-2013
20140069525DEVICE FOR RELIABLE FILLING LEVEL CONTROL IN A QUENCHING CHAMBER THAT IS ARRANGED DOWNSTREAM OF ENTRAINED-FLOW GASIFICATION AND HAS INERT-GAS FLUSHING OF THE PRESSURE-RECORDING MEASURING LOCATION - A device for the reliable measurement and control of the filling level in the quencher sump of a quenching chamber arranged downstream of the gasifying chamber is provided. The device has a differential-pressure transmitter. The measuring location recording the pressure of the gas chamber is flushed with inert gas. The device unproblematically senses the pressures in the quenching chamber and at the bottom of the quencher sump. The difference between which is used as a controlled variable for the filling level.03-13-2014
20140076421OVERFILL PREVENTION VALVE - An overfill valve associated with a drop tube segment fluidly connected to a fluid reservoir is described. The overfill valve includes a valve body positioned within the drop tube segment and a non-contact valve actuator positioned exterior to the drop tube segment and operable to actuate the valve body from an open position to a closed position without requiring any physical penetration through the wall of the drop tube segment. The non-contact valve actuator has a first position in which the non-contact valve actuator does not actuate the valve body from the open position to the closed position in a second position, achieved when the liquid reservoir reaches a predetermined level approaching the capacity of the liquid reservoir, the non-contact valve actuator actuating the valve body from the open position to the closed position when the non-contact valve actuator obtains the second position.03-20-2014
20140116537FUEL CUTOFF VALVE - A fuel cutoff valve comprises a casing having a primary valve chamber and a secondary valve chamber, a primary valve mechanism housed in the primary valve chamber, and a secondary valve mechanism housed in the secondary valve chamber. The casing has a first communication path that connects the inside of the fuel tank and the primary valve chamber, and a second communication path that connects the primary valve chamber and the secondary valve chamber, due to the differential pressure between the tank internal pressure and the primary valve chamber, by the fuel in the fuel tank flowing into the primary valve chamber through the first communication path, a connection conduit is closed by the primary valve mechanism. When the fuel level inside the fuel tank reaches a second fuel level, the second communication path is closed by the rising of the secondary valve mechanism.05-01-2014
20140150900AUTOMATIC TOP-OFF FOR DEEP FAT FRYERS - A system for automatically filling a fryer pot that includes a first temperature sensor and a second temperature sensor in the fryer pot; and a pump and a valve being actuated by said second temperature sensor. The pump and said valve are actuated when said first temperature sensor senses a first predetermined temperature and said second temperature sensor senses a second predetermined temperature.06-05-2014
20140318639System, Method, and Apparatus for Monitoring, Regulating, or Controlling Fluid Flow - An apparatus, system and method for regulating fluid flow are disclosed. The apparatus includes a flow rate sensor and a valve. The flow rate sensor uses images to estimate flow through a drip chamber and then controls the valve based on the estimated flow rate. The valve comprises a rigid housing disposed around the tube in which fluid flow is being controlled. Increasing the pressure in the housing controls the size of the lumen within the tube by deforming the tube, therefore controlling flow through the tube.10-30-2014
20140326333LIQUID REPLENISHMENT SYSTEM FOR A PRINTING APPARATUS FOR DEPOSITING A LIQUID COMPOSITION ON A BACKPLANE INCLUDING A DISPENSING VESSEL HAVING A SELF-SUPPORTING SECONDARY CONTAINER - A liquid replenishment system includes a dispensing vessel for holding a supply of a liquid that has an outer can and corresponding lid conjoinable to the outer can in an air-tight manner. The dispensing vessel is improved by the provision of a separate self-supporting secondary inner container removably receivable within the outer can. The container is fabricated of a material that is non-reactive with a liquid composition containing an organic semiconductor material, such as a polytetrafluoroethylene material or stainless steel.11-06-2014
20150034175CLOSED TANK SYSTEM - In at least some implementations, a fuel tank includes a tank body defining a chamber adapted to receive liquid fuel therein, a reinforcement for the tank body to permit the pressure within the chamber to exceed the vapor pressure of a fuel to be received within the chamber, and an inlet to the tank body through which fuel is added to the chamber. The inlet is configured to mate with a refueling nozzle through which fuel is added to the chamber to permit refueling the tank and maintaining the pressure in the chamber above atmospheric pressure.02-05-2015
20150083238AUTOMATIC PROTECTION DEVICE FOR A TOILET INLET VALVE OR DRAIN VALVE - An automatic protection device for an inlet valve or drain valve includes an inlet, an outlet, an on-off component, a control circuit, a control component, a water level inductor of the water tank and a water level inductor of the toilet. The water level inductor of the water tank and the water level inductor of the toilet are respectively connected to the control circuit, the control circuit drives the control component, the control component is connected to the on-off component to control the on-off component to open or close, thus connecting or disconnecting the inlet and the outlet. The automatic protection device will sound an alarm and automatically cut off the water supply when the drain valve fails to discharge, or when the toilet is plugged up and is unable to drain water.03-26-2015
20150090349Condensate Overflow Detection Device - A condensate overflow detection device includes a frame, a housing, an affixing device, a surface placement mechanism, a float and an actuator. The housing has a bottom and a plurality of pan engagement side surfaces extending upwardly from the bottom, each of which is disposed at a different angle relative to the bottom surface. The housing defines a vent structure passing therethrough that allows water to pass into the housing. The affixing device clamps a pan engagement side surface to a sidewall of a secondary condensate pan. The surface placement mechanism places one of the pan engagement side surfaces opposite from the affixing device. The float, disposed within the housing, has a first position when no water has entered the housing and a second position when a predetermined level of water has entered the housing. The actuator causes an event when the float is in the second position.04-02-2015
20150305550A DEVICE FOR USE IN THE PREPARATION OF BEVERAGES, FOR MANAGING THE DRAW-OFF OF WATER FROM A SOURCE OF HOT WATER - A device for use in the preparation of beverages, for managing the draw-off of water from a source of hot water comprises a chamber having a base, a cylindrical wall mounted on the base and a top section. An inlet and a return outlet are mounted in the base, and both the inlet and the return outlet are connectable to a source of hot water. Three draw-off outlets are also mounted in the base. The return outlet consists of a hollow tube section, which passes through the base to form a stand pipe. In use, hot water is introduced into the chamber through inlet and the chamber is orientated such that return outlet is positioned above the inlet. The inlet flow rate is equal to or greater than the draw-off flow rate, and any excess volume of hot water in the chamber is returnable, to the source of hot water, through the return outlet, thereby creating a constant head of water above the draw-off outlets.10-29-2015
20150330522INTERCEPTING DEVICE - The present invention discloses an intercepting device capable of maintaining interception without the need of ensuring the sealing performance and automatically adjusting a height for interception. This intercepting device overcomes the deficiencies that a prior art intercepting device will fail to work if failing to ensure the sealing performance and can block only fluid at a same height as the intercepting device. This intercepting device comprises a high liquid level end and a low liquid level end, the high liquid level end being in communication with the low liquid level end via a conduit, the conduit being provided successively in a fluctuating manner and every fluctuation forming a chamber with its lower end separated and its upper end communicated; and within the chamber, provided are a front liquid column segment, a rear liquid column segment, and an air-sealed segment located in the upper portion of the chamber to separate the front liquid column segment from the rear liquid column segment, the height of the front liquid column segment being greater than that of the rear liquid column segment. The intercepting device is applicable to the occasions where a conventional intercepting device is applicable, avoids the problem in the prior art of needing to ensure the sealing performance while intercepting, and is capable of adjusting the height for interception.11-19-2015
20150354639Hydraulic Control Device - A hydraulic control device that includes a solenoid valve that includes an input port, an output port that communicates with the hydraulic engagement element via an oil passage, and a feedback port that communicates with the output port via the oil passage, the solenoid valve regulating a pressure of working oil input from the input port to output the regulated pressure from the output port to the oil passage, a part of the output working oil being input to the feedback port; and a hydraulic damper that damps pulsation of the hydraulic pressure output from the output port to the oil passage, wherein: the oil passage is provided with an orifice mechanism that reduces a flow rate of the working oil; and the hydraulic damper communicates with the oil passage on a side of the output port and the feedback port with respect to the orifice mechanism.12-10-2015
20160145739LIQUID-METAL ORGANIC COMPOUND SUPPLY SYSTEM - A liquid-metal organic compound supply system which is applicable to a MOVCD processing apparatus is provided, including a first bottle body accommodating a high purity liquid-metal organic compound, a first outlet pipe of the first bottle body connects to the MOVCD processing apparatus; a second bottle body accommodating a high purity liquid-metal organic compound, a connecting pipe connecting between a first inlet pipe of the first bottle body and a second outlet pipe of the second bottle body; and a liquid level detecting module comprising a liquid level gauge detecting liquid level of the first bottle body and a display unit displaying liquid level of the first bottle body, and the liquid level gauge being disposed in the first bottle body, the display unit being electrically connected to the liquid level gauge. Besides, the system also decreases the manufacturing and packing costs of trimethyl gallium.05-26-2016
20190146525MOBILE DISTRIBUTION STATION WITH GUIDED WAVE RADAR FUEL LEVEL SENSORS05-16-2019

Patent applications in class LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS

Patent applications in all subclasses LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS

Website © 2025 Advameg, Inc.