Abstract: A fill station for filling various sizes of containers from a liquid dispensing system includes a first stationary platform and second rotatable platform positioned above the first platform. The second platform is hinged to move between a horizontal loading position and a stowed position to provide access to the first platform. A third platform may be positioned above the second platform, wherein the third platform is hinged at an opposite end from the second platform to move between a horizontal load position and a stowed position. Sensors may be used to detect whether a container is positioned on one of the platforms and to detect the positions of the different rotatable platforms.

Abstract: An automatic hybrid volumetric method of dispensing (HVD) improves on gravimetric dispensing and volumetric dispensing. The method dispenses ingredients for a mixture, according to pre-selected formulations, utilizing a supply of the fluid ingredients, an ingredient container, a power-driven plunger in the ingredient container, a mixture container, and a calibration weight scale. The plunger is movable to expel fluid in the ingredient container. The method includes several steps. The ingredient container is connected to the supply to receive a first ingredient in the ingredient container. The ingredient container is connected to the mixture container for the mixture container to receive ingredient expelled from the ingredient container by movement of the plunger.

Abstract: A method and apparatus for monitoring and determining fuel vapor recovery performance is disclosed. The dispensing of liquid fuel into a tank by a conventional gas pump nozzle naturally displaces a mixture of air and fuel ullage vapor in the tank. These displaced vapors may be recovered at the dispensing point nozzle by a vapor recovery system. A properly functioning vapor recovery system recovers approximately one unit volume of vapor for every unit volume of dispensed liquid fuel. The ratio of recovered vapor to dispensed fuel is termed the A/L ratio, which should ideally be approximately equal to one (1). The A/L ratio, and thus the proper functioning of the vapor recovery system, may be determined by measuring liquid fuel flow and return vapor flow (using a vapor flow sensor) on a nozzle-by-nozzle basis. The disclosed methods and apparatus provide for the determination of A/L ratios for individual nozzles using a reduced number of vapor flow sensors.

Abstract: A controller for a volumetric pocket filler having a plurality of pneumatically powered components, includes a pneumatically powered actuator, having a motion path, and a plurality of pneumatic switches, disposed along the motion path of the actuator. The pneumatic switches are configured for contact with the actuator, to control air flow to the plurality of pneumatically powered components of the volumetric pocket filler.

Abstract: Apparatus and method of replacing old fluid in a transmission system by feeding clean fluid into the system from a clean fluid tank using a pump and draining the old fluid into a waste tank and using a processor to monitor the clean fluid pressure in the clean tank and the old fluid pressure in the waste tank and adjusting the pump's speed using the processor such that the old fluid is drained at substantially the same rate as the clean fluid is fed.

Abstract: This invention relates to a wheel stop service port for coupling to a connectivity device of a wheeled vehicle such that one or more services, namely electricity, data, and fluids, are transferable therebetween. The service port includes a housing having a receptacle recess with a recess opening on an outside surface of the housing; a fastener on the housing for fastening the service port to the ground; a receptacle inside the recess and comprising an opening shaped to receive a service plug of a vehicle connectivity device, and a service engagement portion inside the receptacle for engaging a corresponding service engagement portion on the plug; a service conduit junction coupled to the receptacle and couplable to a service conduit to enable the transfer of a service therebetween; and a wheel contact surface located on the housing outside surface such that upon contact of the contact surface by a wheel of a vehicle, the connectivity device of the vehicle is within coupling range of the service port.

Abstract: A high volume lens curing system is described. The high volume lens curing system may be configured to cure multiple eyeglass lenses in a continuous manner. An embodiment of a system may include a lens forming composition heating apparatus and a controller.

Abstract: The present invention relates to an apparatus and method for transferring data relating to the functioning of a fuel dispenser between a wireless device and the fuel dispenser. The wireless device activates a sensor on the fuel dispenser which in turn initiates the transfer of data between the wireless device and the fuel dispenser. The wireless device can download data from the fuel dispenser for review as well as modifying the data. If the operator of the wireless device modifies the data, the operator can upload the modified data to the fuel dispenser.

Abstract: The invention relates to a hybrid gas generator, in particular for filling a gas bag, comprising a combustion chamber (3) which contains a predetermined amount of a gas generating material (11) and which comprises an outlet opening of the combustion chamber, further comprising an activating device (9) for activating the gas generating material (11) and further comprising a gas vessel (5) containing a stored gas, which is connected with the combustion chamber (3) via the outlet opening of the combustion chamber, which is sealed off in the initial state, and which comprises at least one outlet opening (25) for the gas mixture which is sealed off by means of an outlet membrane (23) in the initial state, wherein the gas that is generated in the combustion chamber (3) after the gas generating material (11) has been activated acts upon a projectile (29) via the outlet opening of the combustion chamber, which projectile is accelerated by the gas pressure and destroys the outlet membrane (23), whereby the gas mixture

Abstract: A multicomponent, ground based system for reducing the hazard of explosion of aircraft fuel in the on board tanks of aircraft. The system is adapted to provide a supply of scrubbed fuel having a low concentration of dissolved oxygen. The scrubbed fuel can be supplied from bulk storage tanks to dispensing stations nearby the aircraft loading and boarding positions at an airport. The system also includes equipment adapted to wash the ullage of the aircraft fuel tanks to remove excess oxygen above the fuel in the tanks. The system further includes a gas cleaning unit to strip excessive amounts of volatile organic compounds from gas exhausted during operation of the system thereby producing environmentally benign atmospheric emissions. The system also includes redundant sources of inert gas so that the system can continue to operate in the contingency that one of the inert gas sources temporarily ceases to operate.

Abstract: A method for actuating an onboard refueling vapor recovery (ORVR) valve to selectively enable passage of fuel vapor from a fuel tank to a collection canister for the fuel vapor. The method includes determining whether a filling event is occurring and determining a fuel level within the fuel tank. The ORVR valve is selectively opened and closed in connection with whether a fueling event occurs and whether the fuel tank is full.

Abstract: An apparatus is described for providing a customized, personal care product to a consumer at a location, typically the point of sale, that is remote from a second location in which a personal care product base composition is prepared. A selection of customizing agents of different classes with a common vehicle is made available to the consumer for custom formulation of a personal care product with the desired attributes. The apparatus typically includes a plurality of product base dispensers, a plurality of fragrance dispensers, and a plurality of customizing agent dispensers that may contain benefit agents, botanical extracts, active ingredients for skin and hair, and the like. A blank vehicle is substituted if insufficient customizing agents are selected. Efficient mixing mechanisms are also described.

Abstract: According to a method for filling containers (2) with a metered quantity of products (10), the products is supplied to a reservoir (3), inside which there is a metering receptacle (7). In its upper part, the metering receptacle (7) is open and its lower part features a discharge pipe (8), which communicates with a container (2) to be filled. A moving element (13) moves between a filling position in which it causes the raising of level of the products (10) over the opening (7a) of the metering receptacle (7), so that the latter is filled with the products and a non-filling position, in which the level of the products (10) is lowered below the opening (7a) of the metering receptacle (7). Thus a metered quantity (11) of products is collected inside the metering receptacle (7) The metered quantity (11) of products is delivered to the container (2) through the discharge pipe (8), by opening of valve means (9).

Abstract: This invention relates to a service coupling for coupling a vehicle to a service port such that one or more services are transferable therebetween. The coupling comprises a plug comprising at least one service engagement portion; and a receptacle comprising an opening to receive the plug, and at least one service engagement portion positioned to engage the plug service engagement portion when the plug is inserted into the receptacle. The engagement is such that a service is transferable between the plug and receptacle. At least one of the plug and receptacle service engagement portions is arcuate thereby enabling engagement to be maintained between the plug and receptacle engagement portions when the plug is rotated about the axis and within the arc-length of the arcuate engagement portion.

Abstract: The invention relates to a system, apparatus, and method for measuring and transferring the contents of a vessel. The apparatus includes an outer vessel having a liquid disposed therein and an inner vessel positioned to float in the liquid of the outer vessel. A liquid is also disposed in the inner vessel. An input passageway is associated with the inner vessel and at least one output passageway is associated with the outer vessel. A magnet or other sensed member is positioned on the inner vessel and a sensor, such as a Hall-effect sensor, is associated with the outer vessel. The sensor is configured so as to read the position of the inner vessel relative to the sensor to determine the weight of the inner vessel.

Abstract: A system for periodically maintaining non-fuel fluids required for proper performance by various apparatus and for reporting non-fuel fluid maintenance action taken. Maintenance systems include means for replacing, replenishing or renewing non-fuel fluids or renewing non-fuel fluid filters. Reporting systems include means for communicating information between on- and off-apparatus sub-systems and for generating reports that document non-fuel fluid maintenance actions taken.

Abstract: A fuel dispenser for service stations which comprises an integrated catastrophic protection system. The dispenser comprises a leak detector, an impact (or displacement) sensor, and a heat sensor for detecting dangerous conditions in or around the dispenser. The sensors may be connected to a processor within the dispenser or may send signals to a remote processor. Upon detection of any of the dangerous conditions, a system controller can take appropriate action to shut down part or all of the fuel system in the facility to avoid a fuel catastrophe.

Abstract: The present invention provides an intelligent nozzle having a communication system capable of wireless, remote communications with an associated dispenser. Information may be transmitted from the dispenser to the nozzle to facilitate nozzle control or display to a customer, and information received at the nozzle may be transmitted to the dispenser for further processing or display.

Abstract: A fuel dispenser for service stations which comprises an integrated catastrophic protection system. The dispenser comprises a leak detector, an impact (or displacement) sensor, and a heat sensor for detecting dangerous conditions in or around the dispenser. The sensors may be connected to a processor within the dispenser or may send signals to a remote processor. Upon detection of any of the dangerous conditions, a system controller can take appropriate action to shut down part or all of the fuel system in the facility to avoid a fuel catastrophe.

Abstract: The invention relates to open-close means for a fill opening of a fuel tank of a vehicle that enables the fill opening of the fuel tank to be easily detected by a fuel filling robot. The open-close means comprises an open-close portion for opening and closing the fill opening and a position identifying member. Also, the invention relates to a fuel filling method using the open-close means, wherein the fuel filling robot is provided with a fuel nozzle and moving means for moving the fuel nozzle so that the fuel nozzle can be operated to move into position of the fill opening under control of signals from the position identifying member of the open-close means.

Abstract: A method of filling a cylinder with a target weight of a gas. The method includes successively measuring weight of the cylinder at periodic time intervals to obtain successive actual weights of the cylinder; opening a first valve and filling the cylinder with the gas at a high flow rate; and closing the first valve after reaching a predetermined weight difference between the target weight and an actual weight. After closing the first valve, the method opens a second valve and fills the cylinder with the gas at a low flow rate. After opening the second valve to fill the cylinder with the gas, the method adjustably controls, via an adjustable valve, the flow of gas to the cylinder. The method differences each successively measured actual weight from the target weight of the gas to obtain multiple first difference values. The method also differences adjacently measured actual weights to obtain multiple second difference values.

Abstract: An apparatus of measuring both concentration and amount of a liquid in a liquid chemical container is presented, comprising viewing light emanating from a first optical member that is in visual contact with the liquid, the light emanating from the optical member having a level indicating quality; and routing light from a second optical member that is in visual contact with the liquid to means for optical discrimination between liquid chemical based on different optical properties.

Abstract: The invention relates to open-close means for a fill opening of a fuel tank of a vehicle that enables the fill opening of the fuel tank to be easily detected by a fuel filling robot. The open-close means comprises an open-close portion for opening and closing the fill opening and a position identifying member. Also, the invention relates to a fuel filling method using the open-close means, wherein the fuel filling robot is provided with a fuel nozzle and moving means for moving the fuel nozzle so that the fuel nozzle can be operated to move into position of the fill opening under control of signals from the position identifying member of the open-close means.

Abstract: Sterilization apparatus includes a monitoring system capable of continuously monitoring levels of a sterilant, such as hydrogen peroxide vapor. The monitoring system includes a sensor chamber joined in fluid communication with a sterilant supply conduit of the sterilization apparatus. A gas-detecting semiconductor sensing element, and associated temperature sensor, are provided within the sensor chamber to provide output signals corresponding to detected levels of sterilant. The sensor chamber isolates parametric influence, such as relative humidity, temperature and flow rate, to provide more accurate concentration level readings. A data collection circuit is operatively coupled to the sensors to provide an output corresponding to detected levels of sterilant within the apparatus.

Abstract: A system and a method for delivering and metering a fixed volume of liquid, such as a liquid sterilant from a container into a vaporization system. The method for the delivering system includes the steps of sensing a requirement for additional liquid sterilant, determining whether the liquid sterilant to be added is acceptable for use, and delivering the liquid sterilant from a container into an accumulator. The method of metering the liquid sterilant into the vaporization system includes creating a vacuum in a chamber connected to the vaporizer and delivering the liquid sterilant into a vaporizer while continually sensing the flow of the delivery. The metering system maintains a slow, controlled flow in order to achieve efficient vaporization of the liquid sterilant and to provide accurate sensing of the gas/liquid interface.

Abstract: To fill containers with fluid with good reproducibility in a short time. It has an exciting frequency setting unit 62 for setting an exciting frequency in each of electromagnetic flow meters at a desired frequency and synchronization units 7, 63 for synchronizing excitation timing in each of the electromagnetic flow meters.

Abstract: An oil supply station system of the present invention includes a plurality of oil supply apparatuses standing within an oil supply station, and each having at a body case thereof a self-service oil supply mechanism and a touch-activated operating panel and having a printer for recording any change on a slip for a cash transaction. The system further includes a change dispenser disposed in a vicinity of an office of the oil supply station, for reading the slip and discharging change. Also, a POS terminal is connected in a data communicable manner with the plurality of oil supply apparatuses and the change dispenser, for providing permission to the change dispenser to dispense change.

Abstract: A gas/liquid transfer device for delivering a fixed quantity of pressurized gas/liquid to a dispensing device including a fixed volume chamber for receiving the pressurized gas/liquid, the chamber being in fluid connection with a system of controllable filling and emptying valves and a discharge connector. The discharge connector is disposed downstream of the emptying valve is arranged to be operatively coupled by an operator to a hand held dispensing device. The discharge connector is tamper-proof and configured to prevent a fixed quantity of pressurized gas to be discharged without the dispensing device being attached to the discharge connector. The timer is configured to impose a predetermined time interval between successive transfers of the pressurized gas/liquid.

Abstract: In an aspect, a depression container includes a vessel, a cover, a pump, a pressure-activated switch and a power supply. The vessel includes an open end. The cover is used for sealing the open end of the vessel. The pump is used for drawing air out of the vessel. The pressure-activated switch is used for controlling ON and OFF of the pump. The pressure-activated switch detects the pressure in the vessel, and turns on the pump when the pressure is higher than a predetermined upper limit, and turns off the pump when the pressure is lower than a predetermined lower limit. The pressure-activated switch and the pump are powered by the power supply. In another aspect, a depression container includes a vessel, a cover, a pump, a pressure-activated switch and a power supply. The vessel includes an open end. The cover is used for sealing the open end of the vessel. The pump is used for drawing air out of the vessel. The pressure-activated switch and the pump are powered by the power supply.

Abstract: An electronic onboard refueling vapor recovery (ORVR) system including an electrically operated ORVR valve that selectively opens and closes a fuel vapor path between a fuel tank and a collection canister. An electronic control circuit generates control signals to selectively open and close the ORVR valve. The electronic control circuit receives one or more inputs from one or a plurality of sensors and evaluates the one or more inputs to determine whether to activate the ORVR valve. The sensor inputs include at least a sensor indicating fuel is being introduced into the filler neck and may also include at least a sensor indicating a fuel level within the tank.

Abstract: Sterilant monitoring assembly includes an external housing defining an inlet and an outlet, and an internal flow path extending therethrough. An internal housing is located within the external housing and substantially surrounded by the internal flow path. The internal housing defines an interior sensor chamber therein, and includes a valve arrangement to join the interior sensor chamber selectively in fluid communication with the internal flow path. Preferably, the valve arrangement of the internal housing is defined by a base portion and a cover portion moveable relative to each other between an open position and a closed position. In one embodiment, the cover portion has an open end section configured for sealing engagement with an opposing surface of the base portion when moved axially to the closed position. In another preferred embodiment, the base portion and cover portion include mating peripheral walls.

Abstract: A fuel delivery system performs a refueling operation in accordance with voice command signals audibly provided by a customer situated within a vehicle positioned for refueling. The customer generates audio signals representative of refueling transaction information, such as a request to initiate fuel dispensing activity, data indicative of the fuel type, fuel volume, purchase amount, and form of payment, and a request to terminate the refueling transaction. A microphone detects the customer voice signals and provides audio detection signals representative thereof. A speech recognition device converts the audio detection signals into corresponding fuel dispensing command signals. A controller generates fuel dispensing control signals in accordance with the fuel dispensing command signals and couples these control signals to the fuel dispenser assembly to effect operative control thereof.

Abstract: Methods and apparatus of measuring both concentration and amount of a liquid in a liquid chemical container are presented, one method comprising the steps of: (a) viewing light emanating from a first optical member that is in visual contact with the liquid, the light emanating from the optical member having a level indicating quality; and (b) routing light from a second optical member that is in visual contact with the liquid to means for optical discrimination between liquid chemical based on different optical properties.

Abstract: A fill station for filling various sizes of containers from a liquid dispensing system includes a first stationary platform and second rotatable platform positioned above the first platform. The second platform is hinged to move between a horizontal loading position and a stowed position to provide access to the first platform. A third platform may be positioned above the second platform, wherein the third platform is hinged at an opposite end from the second platform to move between a horizontal load position and a stowed position. Sensors may be used to detect whether a container is positioned on one of the platforms and to detect the positions of the different rotatable platforms.

Abstract: A rotary and flow meter type liquid filling apparatus including a liquid reservoir tank that stores and supplies liquid to filling nozzles, and air supply paths for different amount of air supply and air discharge paths for different amount of air discharge being connected to the liquid reservoir tank. An air compressor is connected to the air supply paths, and the air discharge paths open into the atmosphere. A liquid pressure sensor disposed near the filling nozzles sense the increase or decrease of the liquid pressure inside a pipe that connects the liquid reservoir tank and liquid filling nozzles, and the electromagnetic valves provided on the air supply and air discharge paths are opened or closed, thus supplying air to and discharging air from the liquid reservoir tank so as to control the air pressure inside the liquid reservoir tank and the liquid pressure near the liquid filling nozzles.

Abstract: A fuel dispenser includes vapor and hydrocarbon concentration sensors positioned in the vapor recovery line to provide accurate feedback relating to the speed and concentration of hydrocarbon laden vapor recovered by a vapor recovery system. The sensors provide diagnostic information about the vapor recovery process as well as insuring that the vapor recovery process is carried out in an efficient manner. Additionally, the sensors may be positioned in an underground storage tank vent apparatus to monitor fugitive emissions from the underground storage tank.

Abstract: A system for dispensing batches of fluid comprising a flowmeter (5), a pump or valve (6) for starting and stopping the flow and a controller (9) for controlling the pump or the valve. In order to reach a target batch size, the settling time at start of the flowmeter is compensated for as well as for the time it takes to stop the flow by generating a stop signal before the target batch size is reached. Further, to compensate for variations in the actual flow caused by variations in the feed pressure and the like, the compensation is made a function of the actually measured flow. A controller or a batch flow meter for use in dispensing batches is equipped with an interface for setting a compensating time constant and a correction unit for compensation of changes in the flow. The correction unit can consist of a differentiator an a summation circuit. Using digital techniques, the correction unit can be made as a lead filter.

Abstract: A method and system for the storage and dispensing of medical grade liquid oxygen are provided. Medical grade liquid oxygen is stored in a storage tank located within a medical facility which is capable of dispensing liquid oxygen to portable liquid oxygen reservoirs and to portable liquid oxygen tanks, as well as delivering oxygen gas through a gas pipeline network. The storage tank is filled through a fill station exterior to the facility. A fixed price billing method is provided for the cost of the liquid oxygen delivered for use in the system. Economical storage, delivery and billing services are thereby provided to medium sized facilities such as nursing homes or extended care facilities which utilize both liquid and gaseous oxygen but cannot afford to install the very large exterior liquid oxygen tanks used by major hospitals and research facilities. Increased safety in the storage and dispensing of the liquid oxygen is provided in accordance with the present invention.

Abstract: A fueling system to be provided in a gas station is disclosed, which comprises at least one fueling machine, and a data input/output unit, the data input/output unit being movable in a required direction, and a fueling data being input from the data input/output unit and being output to the fueling machines.

Abstract: The invention is an improved method and system to fuel a vehicle such as a hydrogen-powered vehicle. The present invention vents air into a fuel fill line within the vehicle from a fuel fill receptacle to the vehicle's fuel storage tank. The invention eliminates or reduces inadvertent fuel ignition from electrostatic discharge in and around a vehicle fuel line during fueling. Just prior to fueling, the invention vents the fuel line in between two of a plurality of fuel line check valves closest to the receptacle. The invention can be configured to activate the vent system where a first switch indicates vehicle fueling is imminent (such as a fuel fill door is opened) and a second switch indicates that the receptacle is not attached to a fuel source. The system can also be configured to deactivate if the first switch indicates fueling is not imminent (the fuel door is closed), or the second switch indicates that the receptacle is attached to the fuel source.

Abstract: The invention is an improved method and system to fuel a vehicle. The present invention includes a strategy to determine whether the vehicle is ready to receive fuel and to communicate a vehicle confirmation signal (VCS) to the fuel fill station when the strategy has determined the vehicle is ready to receive fuel. The strategy also includes a dispenser activation system comprising a device to receive the VCS and generate a second signal within the fuel fill station to release the fuel dispenser and fuel dispenser nozzle when the VCS is received. A vehicle locking system can be added to disable the vehicle while the vehicle fuel door is open or when the fuel station nozzle is attached to the vehicle nozzle receptacle. The strategy can determine whether the vehicle is ready to receive fuel by requiring the gearshift device to be in the “Park” position. If the vehicle has a manual transmission, the strategy requires the parking brake to be applied.

Abstract: In a beverage container filling machine or plant, an arrangement and a method for filling of bottles, cans, or the like containers, with a liquid filling material, for example, a beverage, using a plurality of filling elements, during the filling process there is monitored, on an individual basis at each filling element, the pressure in the interior space of the container that is connected with this filling element and this actual pressure behavior or value is utilized for monitoring and control purposes.

Abstract: The current invention is a dispensing system for deterring and preventing transponder misuse in a fueling environment. The system includes a fuel dispenser associated with a control system and a receiver adapted to receive signals, including identification indicia from a remote communications unit associated with a customer. The receiver operates in conjunction with the control system to provide the control system with the first indicia and determine if the remote communications unit has been lost, stolen or used in an unauthorized manner. The control system is adapted to prevent fueling and transaction continuance upon determining the remote communications unit in communication if the dispenser was lost, stolen or used in an unauthorized manner.

Abstract: A system for automatically and simultaneously diagnosing apparatus performance and safety condition, maintaining on-apparatus components and sub-systems, and reporting apparatus condition and maintenance action taken during apparatus refueling. Diagnostic sub-systems include means for determining the condition of fluids or components that are consumed or deteriorate during use. Maintenance sub-systems include means for replacing, replenishing or renewing non-fuel fluids or components that are consumed or deteriorate during use. Reporting sub-systems include means for communicating information between on- and off-apparatus sub-systems and for generating reports that document apparatus performance and safety condition and the maintenance actions taken during refueling. A report can be presented to the apparatus operator, apparatus maintenance technician and/or to a central reporting facility.

Abstract: A fuel dispensing system and method for preventing unauthorized fueling by controlling access and delivery of fuel from a fuel dispenser, based on information received from a vehicle or container via remote communications during a fueling operation. The vehicle transmits a signal including fuel delivery indicia to the dispenser. The dispenser uses the fuel delivery indicia to determine whether the vehicle is receiving fuel and determines whether it is delivering fuel. The dispenser maintains fuel delivery authorization if the vehicle indicates that it is receiving fuel and the dispenser is delivering fuel. If the vehicle indicates that it is not receiving fuel and the dispenser determines that it is delivering fuel, the dispenser may generate an output signal to identify an improper fueling condition and stop fuel delivery.

Abstract: A fuel dispenser includes vapor and hydrocarbon concentration sensors positioned in the vapor recovery line to calculate the vapor-to-liquid (V/L) ratio of the fuel dispenser. If the V/L ratio is not as desired, an adjustment is made to attempt a correction of the V/L ratio. If such correction attempt is unsuccessful, and error is reported.

Abstract: A system for dispensing batches of fluid comprising a flowmeter (5), a pump or valve (6) for starting and stopping the flow and a controller (9) for controlling the pump or the valve. In order to reach a target batch size, the settling time at start of the flowmeter is compensated for as well as for the time it takes to stop the flow by generating a stop signal before the target batch size is reached. Further, to compensate for variations in the actual flow caused by variations in the feed pressure and the like, the compensation is made a function of the actually measured flow. A controller or a batch flow meter for use in dispensing batches is equipped with an interface for setting a compensating time constant and a correction unit for compensation of changes in the flow. The correction unit can consist of a differentiator an a summation circuit. Using digital techniques, the correction unit can be made as a lead filter.

Abstract: A liquid dispensing and metering system including a tubeless dispensing module is disclosed. The liquid dispensing and metering system includes a turntable table supported and rotated by a driving mechanism. A plurality of solution bottles are positioned on the turntable table, each of which being mounted with an electromagnetic valve. At least one actuating unit is arranged to energize the electromagnetic valves of the solution bottles to allow the liquid material contained in the solution bottles to be flowed out via the electromagnetic valves. At least one electronic scale with a beaker is arranged under the turntable table for measuring the liquid material received in the beakers. The driving mechanism includes a liftable supporting mechanism for moving the turntable table upwardly or downwardly with respect to the electronic scale.

Abstract: A compressed natural gas (CNG) refueling system has banks of cylinders containing CNG, a hydraulic fluid reservoir containing a hydraulic fluid which does not readily mix with CNG, and reversible flow valves. Each cylinder has a fitting installed in an opening at one end. The fitting contains a hydraulic fluid port and a gas port. The other end of each cylinder is closed. Hydraulic fluid is pumped from the reservoir into each cylinder through the hydraulic fluid port. Inside each cylinder, the hydraulic fluid directly contacts the CNG, forcing the CNG out through the gas port. When a sensor detects that the cylinders are substantially drained of CNG, the reversible flow valves will reverse orientation, allowing the hydraulic fluid to flow back into the reservoir.

Abstract: A method for actuating an onboard refueling vapor recovery (ORVR) valve to selectively enable passage of fuel vapor from a fuel tank to a collection canister for the fuel vapor. The method includes determining whether a filling event is occurring and determining a fuel level within the fuel tank. The ORVR valve is selectively opened and closed in connection with whether a fueling event occurs and whether the fuel tank is full.