Receptacle

A system for testing opening-equipped containers for leakage during the entire period, which is usually relatively long, between the time that such containers are fabricated by the manufacturer thereof and the time that they are filled by the user with the product intended therefor. The system includes...     

A comparison-type flux meter for works such as nozzles or the like has an output elimination circuit in co-operation with a DC amplifier receiving output of a differential pressure transducer inserted in the main pipe line. Measurement error is minimized and reading of deviation of works to standards...     

A liquid level monitoring device operable either to detect leakage from a body of liquid or to detect deviations from a controlled rate of withdrawal from a body of liquid. The device employs a pressure responsive diaphragm which, in the face of unequalized pressures applied to its opposite sides, is...     

The specification discloses a closed system for cleaning, pressure testing, and drying fire extinguisher containers. The system comprises two tanks for holding trichloroethane and flow lines and a valve control system for flowing the liquid from one tank into the container to be cleaned, pressure tested,...     

A system to detect leaks, monitor levels, activate alarms, etc. in which a specific material in the system dissolves or disintegrates on contact with a liquid, gas or vapor which is to be monitored.

An inspection head to test objects such as plastic bottles for absence of leaks and crushing resistance includes a column having a seal for an aperture in the object which may be applied to the object to exert a crushing force and a fluid supply source to apply a pressure inside the object, which pressure...     

An apparatus for measuring gas leakage including a hollow container having a gas inlet port which is connected to a reference pressure gas supply via a valve and another gas outlet port that is connected to a test container; a liquid container located in the hollow container, a balance mechanism mounted...     

An underground storage tank installation. The excavation is to a predetermined depth to permit placement of a storage tank of desired size therein below ground level. At least a pair of opposing side walls of the excavation are sloped to minimize the danger of collapse. The excavation is provided with...     

Apparatus for monitoring gas content on a site, to provide an indication if an undesirable gas content occurs, comprises a transmitter for feeding ultrasonic waves through the gas to a receiver. The ultrasonic waves are frequency-modulated and the phase of the modulation at the receiver relative to that...     

In a tank system tightness tester of the general type disclosed in U.S. Pat. No. 3,580,555, a vertically elongated, flexible and resilient, annular diaphragm is provided for sealing against the fill pipe going down into the underground storage tank. The diaphragm is clamped to the outside of an adapter...     

A system is disclosed for detecting the leakage of fluid from a container by measuring the decay of an initial pressure input. The system employs an axially displaceable piston having a first surface exposed to fluid pressure within the container, and a second surface opposed to the first surface, having...     

In order to evacuate a receptacle using a pumping arrangement composed of a backing pump connected to the receptacle and a fine or high vacuum pump connected to the receptacle via a cold trap, the receptacle is initially evacuated only by operation of the backing pump, the time taken to achieve a predetermined...     

The instant invention relates to a device for testing the end buckling strength of a can body wherein a uniquely disposed compressible ring- or doughnut-like member of appropriate elastic material is adapted to be compressed against the inside surface of a metal or container for the purpose of sealing...     

Apparatus is provided for testing the strength of a seal provided between an underlying substrate material and an overlying sheet material of a container. The package is inflated through an inflation needle inserted into the container. The pressure in the container is sensed through a sensing needle...     

A fluorescent leak detection composition is provided comprising water, a nonionic surfactant having an HLB value of about 12 to about 14 in an amount effective to produce stable bubbling of the composition for a time sufficient to enable detection of a leak in a container when the composition is applied...     

Leakage of a liquid may be detected in terms of the drop in intensity of light rays traveling through a light guide core or optical fiber made of glass or synthetic resins due to the adhesion of the leaked liquid to the light guide.

A sensor for measuring leakage from a liquid containing tank comprises a main body portion suspended from a balance arm or other mass displacement detector and has a liquid holding portion in the main body. The cross-sectional area of the liquid holding portion is essentially equal to the cross-sectional...     

A tester for testing the physical characteristics of bottles such as the degree of stretch of a plastic bottle and the pressure required for rupturing a glass bottle. The apparatus includes an elongated cylinder having a bore extending therethrough. A piston is threadably carried within the bore so that...     

A crown release pressure tester for testing the pressure that is required for a crown carried on a container to fail or if the crown is leaking. The device includes an elongated housing which has a bore extending therethrough. The top portion of the container which has the crown that is to be tested...     

A method of high sensitivity for measuring leakage of liquid from a storage tank which comprises introducing a sensor into the liquid in the tank, the sensor being coupled to means for sensing displacement of mass, measuring the displacement over a known period of time and calculating the leakage rate....     

A smoke generator is adapted to be used with other apparatus for testing the peripheral seal integrity of a package. The smoke generator heats a fuel within a chamber and then aspirates smoke into a conduit through which fluid is flowing. The apparatus includes additional conduits operatively arranged...     

A transducer has a chamber containing a substance having a monitorable physical and/or chemical property, for example electrical conductivity, which property changes in correspondence with a change in an external influence, for example, temperature. In one embodiment, the chamber is of elongate form...     

This invention relates to an improved apparatus for effecting the high speed testing of hollow articles or containers for leakage. The apparatus includes a normally closed charge valve and a normally open test valve connected in series between a regulated source of pressurized air and the container....     

A leak testing device capable of detecting and measuring gas and water leakage in valves and other parts of pressurized pneumatic and hydraulic systems is disclosed. Gas from a pressurized source is injected into the apparatus of the device and is adjusted to the desired pressure. The flow of pressurized...     

The invention relates to tanks for the storage of liquid and has particular application to the land storage of liquefied gas at low temperature at or above atmospheric pressure. Thus, the invention provides a storage tank of the kind in which the walls are formed by a multiplicity of connected, parallel,...     

The monitor employs a sensing piston whose position is balanced by offsetting the pressure to be monitored on one side of the piston by a reference pressure of approximately equal magnitude on the other side of the piston. A balance valve on the sensing piston controls the rate of flow of the reference...     

A method and device for leak testing vessels such as fuel cells or tanks which are large enough for a person to move around within holding a small hand held ball or balloon type device which is provided with a large aperture. In leak testing a vessel, the aperture portion of the device is pressed against...     

A leak detector comprising a housing having an axis on first and second compartments spaced along the axis and hermetically separated by a partition, the first compartment being closed to comprise a pressure envelope which is in communication with an evacuated space to be monitored for leakage, an ionization...     

An apparatus for detecting small changes in the location of a float, has, in combination, a signal generator for emitting a signal having a characteristic, a detector for detecting a modulated signal by producing a response signal directly related to the characteristic, a support for positioning the...     

A method and apparatus for detecting perforations in an underground fuel storage tank, employs the creation of a partial vacuum in the tank and a pressure difference across the tank wall, to cause air to pass through the perforation, and a hydrophone to sense the acoustic waves produced by the formation...     

Leakage from a gasoline storage tank or other receptacle is detected by differentiating the output from a liquid-level monitoring transmitter with stepped voltage output and applying the differentiated transmitter signal through an amplifier to a latch controlled relay for activating an alarm. An interlock...     

An improved method of measuring leak rates by placing a source of fluid pressure in communication with a cavity being tested, and measuring the flow rate to the cavity after a predetermined time to determine the leak rate from the cavity. The improved method achieves a determination of the leak rate...     

A storage tank system especially useful for storing liquid gasoline comprises a rigid outer tank fitted with a bladder and an analyzer. The system results in a storage facility which is less likely to lose its stored liquid to the environment due to a slow leak or a sudden large leak such as is possible...     

A storage tank, principally for fluids, having an inner primary tank formed of steel, and having a plastic coating, and an outer tank formed of sheet material composed of glass fibers and plastic resin, and having a coating of glass fibers and resin applied to the exterior thereof. Elongated spacers...     

A method for testing leakage from an element, such as a container. The element to be tested is sealed within an enclosure so as to define a reduced volume space in the enclosure around the container. An increase in the pressure in the surrounding space is detected as a function of the amount of leakage...     

A method and apparatus for testing liquid storage tanks for leakage by using apparatus to measure changes in liquid level and temperature over a predetermined period of time in which the liquid level apparatus includes means for discharging a uniform low pressure to a fixed point below the liquid level...     

An apparatus for sensing the difference between a polar fluid and a non-polar fluid includes a control assembly, a probe assembly and a conduit electrically coupling the probe assembly to the control assembly at a remote location thereto. The probe assembly includes a float, at least one fluid sensor...     

The apparatus consists of a mechanical acoustical driver producing sound vibrations in a fluid, such as a liquid or gas, within an enclosed space. A pickup transducer positioned within the tank measures the sound vibrations of the gas within the tank and transmits the same to a lock-in amplifier and...     

This tank leakage detection system senses at an early stage the failure of a liner membrane made of a non-corroding material such as lead which allows the escape of a corrosive liquid contained within the tank to the space between the liner membrane and the outer steel walls of the tank. The detection...     

A method for detecting small leaks in a tank storing a liquid by measuring changes in the location of a float suspended in the liquid. The method includes the steps of sealing the float to prevent the condensation of vapors within the float, modulating an emitted signal by an amount which varies with...     

A fluid level sensor comprising a pivoted float which contains a solid-state inclinometer that produces sensitive electrical output signal responsive to angular displacement of the float from the direction of gravity. The float is capable of resolving very small changes in liquid level in a vessel, and...     

A soil pollution monitoring system includes a plurality of ducts for conveying gases and air past a sensing device. The sensing device detects selected compounds in the gases and air and provides an output in electrical form which indicates whether or not the levels of certain compounds in the gases...     

A method for detecting small leaks in a tank storing a liquid by measuring changes in the location of a float suspended in the liquid. The method includes the steps of sealing the float to prevent the condensation of vapors within the float, positioning the float at a preselected depth, modulating an...     

A method and apparatus for detecting a change in the liquid level in a liquid storage tank, such as an underground hydrocarbon storage tank. A gas line is inserted just below the level of the liquid in the tank, and a second interconnected gas line is placed in a small liquid cup located on the surface....     

A system for detecting fluid pollutants includes probes for sensing the presence of a polar liquid, a non-polar liquid, and a dry condition, and for producing a polar liquid signal, a non-polar liquid signal, and a dry condition signal. A reference circuit which includes a tunable element, such as a...     

An underground liquid storage tank assembly including an inner vessel, preferably of steel or other strong, economical material; a seamless outer containment shell, preferably of strong corrosion resistant material such as fiberglass reinforced plastic; and an intermediate spacer member between the inner...     

Two thermistors are mounted in a fluid detection probe, one thermistor having its surface exposed to the ambient fluids, and the other encapsulated in an insulator, such as RTV, that has a thermal conductivity greater than air. The thermistors are connected in a resistance bridge circuit between ground...     

A method and apparatus for pressure testing containers in peripheral cells in a rotating turret is disclosed in which high pressure air in tested containers is initially discharged into a low pressure reservoir down to a predetermined low pressure and the residual air at the low pressure then discharged...     

A double-wall tank having inner and outer walls bonded to connecting hollow annular ribs. A passageway through the ribs enable leak-detecting liquid to fill the spaces between ribs, within ribs, and between end caps.

A method and apparatus is taught for rapidly implementing a semiautomatic vacuum test of food cannisters prior to filling. Unit numbers of completely formed but unfilled cannisters are manually positioned on vacuum mandrels and the test sequence started. Progress of the sequence is controlled automatically...     

A storage tank system especially useful for storing liquid gasoline comprises a rigid inner tank having a manhead, a dispensing line extending through the manhead, a sleeve encompassing the manhead, and a jacket encasing the tank and at least part of the sleeve. A leak detector is associated with the...     

A double wall manway assembly for double wall tanks intended primarily for underground use, wherein an inner wall provides primary fluid containment and an outer wall provides secondary fluid containment, and a monitor between the walls can detect leakage past the inner wall into the space between the...     

A method and apparatus for quickly determining leakage in pressurized fluid receptors. Pressure determinations are made substantially immediately following the completion of the filling of the item to be tested with the pressurized fluid without the need for a stabilization period. The complete decay...     

There is a plurality of probes electrically connected to a central controller. Each of the probes is capable of providing a hydrocarbon signal, a water signal and a dry signal upon sensing these respective environments. The controller includes an audible alarm transducer and a switch for activating circuitry...     

A thermal probe for use in a tightness testing apparatus for an underground storage tank provided with a fill pipe extending from ground level down to the tank, and including a mechanical compression, ring-shaped seal which sealingly engages the outer periphery of the access or fill pipe of an underground...     

An apparatus for sensing the difference between a polar fluid and a non-polar fluid includes a control assembly, a probe assembly and a conduit electrically coupling the probe assembly to the control assembly at a remote location thereto. The probe assembly includes a float, at least one fluid sensor...     

A plurality of probes for sensing their fluid environment are electrically connected to a controller. The controller includes an alarm transducer, relays, a keyboard, and a display connected to a microprocessor and associated memories. Under keyboard control and software direction the microprocessor...     

The leak detector is utilized for determining the presence of a leak in an above ground tank of liquid having a lower specific gravity and a lower electrical or thermal conductivity than water. The leak detector includes a device for determining the level of water in the tank and a mechanism for sensing...     

A method of making a storage tank comprises applying ribs around a inner tank, securing said ribs to the inner tank, applying gas pervious material in the space between the ribs, and applying a layer of fibrous reinforcing material and resinous material over the gas pervious material. The gas pervious...     

A plurality of probes are electrically connected to a central controller. Each of the probes is capable of providing a hydrocarbon signal, a water signal, and a dry signal to the controller upon sensing these respective environments. The controller includes an alarm transducer, relays, a keyboard, and...     

Ultrasonic apparatus for measuring and remotely displaying the amount of liquid in a tank, the amount of water in the tank and the velocity of sound through the liquid in the tank is described with special application to a buried tank containing gasoline with the possibility of water in the bottom of...     

This invention relates to a portable combustion leak tester for water-cooled internal combustion engines. The tester comprises a top cap, a transparent, hollow sightglass attached to the bottom of the cap and a frustro-conical bottom nose-cone attached to the bottom of the sightglass adapted to fit into...     

For use in determing the rate of loss of liquid from an impoundment, the loss being through a leak in the impoundment and further making such measurements in the presence of surface losses due to evaporation, an apparatus is set forth which includes first and second open ended columns for receiving the...     

A casing having rounded corners for ease of insertion into narrow confines defines a protective chamber and has openings permitting fluids exterior to the casing to enter the chamber. There is a fluid monitor within the chamber having a surface adapted for exposure to the fluids. There is a compartment...     

A leak detection system for detecting leaks of a hydrocarbon from an underground tank uses a dye that is soluble in hydrocarbon, but not in water. At least one riser pipe extends from a point adjacent the bottom of the tank to the surface. The lower end of the riser pipe is perforated. A permeable container...     

Apparatus utilizing pressurized liquid for testing containers such as soft drink beverage bottles for the ability to withstand internal pressure and for the absence of leakage. The pressurized liquid is introduced into each bottle with a swirling motion through an annular passageway and air is expelled...     

A method and device for testing for leaks in fuel tanks. The method requires a vacuum be drawn around the fuel tank while a test gas is injected into the tank. Any leaks in the tank will permit the test gas to be drawn into the vacuum chamber, the output of which is tested by a sensor sensitive to the...     

A storage tank system for storing fluids in an environmentally safe container which includes a rigid external primary tank having a flexible protective secondary inner tank positioned within the tank and drawn, by negative pressure, into contact with the internal walls of the rigid external tank. A continuous...     

An apparatus useful for detecting a leak in a tank filled with liquid comprising: a measuring chamber adapted to hold a volume of liquid and having first sensing acting to monitor the volume of liquid in the measuring chamber; a level control chamber in fluid communication with the measuring chamber...     

Leak test equipment which includes a master side pneumatic system and a work side pneumatic system executes a leakage test sequence basically including pressurizing, balancing and detecting steps under control of a microcomputer. A nonvolatile read/write memory has prestored therein an equivalent inner...     

A device for measuring leaks by measuring buoyancy force changes on a mechanical force transducer inserted into a liquid in the storage tank. The buoyancy force changes result in liquid level changes inside the tank which in turn cause moment forces acting on the mechanical force transducer. These moment...     

There is a controller having an identifier signal output and a status signal input, and a plurality of probes, each having an identifier signal input and output and a status signal input and output. The probes are connected in series with the inputs of one probe connected to the outputs of the next,...     

There is a controller connected to a plurality of probes via a transmission line. The controller provides a command signal including a probe identifier signal and a probe data signal. Each probe includes a plurality of different sensors, each providing one or more status signals on a plurality of probe...     

A sealing surface finish leak detector comprises a test fitting, a source of pressure regulated gas, means for coupling the source of gas to an aperture in the test fitting to deliver the gas to the container at an inspection site, and means for limiting the rate of flow of the gas from the source into...     

A double-walled thickener tank has an outer shell bottom and an inner shell bottom spaced by spaced bars with interconnected or discrete void spaces between the bars. An incompressible load-carrying permeable material such as oil-impregnated sand is compacted in the void spaces to provide a support for...     

Apparatus for detecting leaks in fuel storage tanks. A float suspended in the tank liquid determines liquid levels and transmits the liquid level information via an infrared beam to a probe processor in the upper port of the tank. The probe processor stores a plurality of level indications for subsequent...     

An inspection machine for plastic bottles has a turn table rotatable about a vertical axis, and a plurality of inspection stations to receive the bottles to be inspected. Output signals from sensors are fed to evaluation electronics provided on the turntable itself. Each station has a plate on which...     

There is a controller connected to a plurality of probes via a transmission line. Each probe includes sensors which provide voltage signals related to the fluid status in the probe environment. The voltage signals are applied to a voltage controlled oscillator which in turn provides an oscillating signal...     

A leak containment storage facility includes a containment vessel with an inner tank surrounded by an outer tank. Upon detection of a leak in the inner tank, the pressure within the outer tank can be increased, usually by flooding the tank, to contain the leak. This facility has special application in...     

A jig for leak check capable of safely carrying out leak check of a hollow checked object using pressurized gas without damaging it irrespective of its wall thickness. The jig includes a jig body constituted by two joinable members so as to define an inner space therein. In the jig body is provided a...     

A method of making a jacketed storage tank comprises applying a layer of wax over a rigid inner storage tank, applying fibrous reinforcing material and resinous material onto the wax, and then curing. The wax is subsequently melted and removed to create a continuous space. The resultant jacket is structurally...     

A device for testing a package having, a device for passing a fluid inside the package, and a device for selectively controlling the rate of pressure increase inside the package by the passing device.

A protective lining arrangement, which is intended for use in industrial halls, especially in large-area storage halls, and, on the one hand, is to be capable of being loaded to a high degree by vehicles, machines and stored goods while, on the other hand, is to provide excellent protection against undesirable...     

A system for containing and detecting the leakage of liquid from a receiver, such as a tank or conduit, includes absorbent material which is capable of absorbing liquid which leaks from the receiver. The absorbent material is enclosed by casing material which is dissolvable by the liquid in the receiver....     

A reservoir for leak detecting fluid for a tank is disclosed. A reservoir is used with a double wall glass fiber reinforced plastic tank where the tank has an inner wall, an outer wall, and annular space between the inner and outer walls for receiving a leak detecting fluid and an enclosed space within...     

An elongate safety conduit or trench for receiving chemical liquids, having first and second preassembled conduit elements, the first located and retained within the second. A space is between the two at the bottom for collecting liquid that may leak through the first. A seal along the length of the...     

A computerized leak tester system for rapidly testing a work piece for fluid leaks comprising a continuously regulated pressure supply, a coupler for connecting the pressure supply to a work piece through a valve such that the work piece is both pressurized and tested for leaks through the valve. A differential...     

Apparatus for detection leakage of hydrocarbon-containing liquid, such as gasoline, from a generally cylindrical tank. The apparatus includes an elongate displacer having a vertical axis and extending substantially the full height of the liquid in the tank. The displacer has an upper end and a lower...     

A fuel leak detector for an aircraft system is shown as comprising a plurality of potential fuel leak sources where leaking fules are routed to a collector through a leak detector associated only with only one of the potential leak sources and the fule leak collector. Each detector permits the flow of...     

A liquid level measuring system having a tubular ultrasonic probe with a length in excess of the depth of liquid to be measured; for vertical insertion into a tank. A transducer inside the tube, at a first distance above the bottom end of probe body, responds transmits a sinusoidal acoustical pulse through...     

A liquid tank leakage detection system includes a standpipe and associated measuring pipe together with a sealing connection to the filler pipe of a liquid tank system. A liquid level detector used in cooperation with the measuring pipe includes a float coupled to a measuring beam having one end fixed...     

A liquid confinement type of leak detection system for a liquid retaining chamber defined by an inner wall of the system. The leak detection system also includes an outer wall in closely spaced adjacent relation to the inner wall to define a normally liquidtight leak detection chamber therebetween, and...     

In order to accurately conduct a leakage test in a short time, an initial pressure higher than a test pressure is first supplied into a hollow object to be tested. Then, part of the pressure within the object is relieved to decrease the temperature within the object to the ambient temperature so that...     

A method for making a dual wall tank for storing fluids by producing an inner wall for storing the said fluid, positioning a fabric exteriorally against the inner wall, applying a liquid resin exteriorally to the fabric so as to penetrate partially into the fabric, and curing the liquid resin so as to...     

A system is used to completely drain a hose used in conjunction with a tanker truck or railroad tank car. The system includes a holding tank and a shutdown system as well as a hose emptying unit.

A precision liquid leak detector 10 free of mechanical moving parts is disclosed herein. The liquid leak detector 10 of the present invention is disposed to measure the rate of change of the volume of a liquid within a container 14. The leak detector 10 includes a light guide 16, implemented as an optical...     

Apparatus for, and method of, hydrostatically testing whether a line filled with a liquid, such as gasoline, is leaking comprising mechanism for closing one end of the line to be tested and an upstanding cylinder having its upper end coupled to the opposite end of the line to be tested. The cylinder...     

A triple-walled fluid containment system which includes a rigid metallic outside tank, an outer flexible bladder positioned within the rigid outside tank and a plurality of suspension elements between the tank and the outer bladder for suspending the flexible outer bladder within, and adjacent, the tank....     

A hydrocarbon vapor sensor which is simple and low cost and can easily detect the existence of hydrocarbon vapor. The device is temperature compensated so that a change in resistance due to a change in temperature is avoided and an arcurate response is always provided. The sensor can be used in a system...     

A double-walled vessel for containing fluid, the vessel having an annular space between the walls wherein a compressed gas at a pressure higher than any pressure in the inner vessel is maintained, the vessel including a monitoring device to sense the escape of gas from the annular space such as decrease...