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"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 5076094 | Dual output acoustic wave sensor for molecular identification A method of identification and quantification of absorbed chemical species by measuring changes in both the velocity and the attenuation of an acoustic wave traveling through a thin film into which the chemical species is sorbed. The dual output response ... | 12/31/1991 |
| 5069070 | Method for determining the alcohol content and/or the calorific value of fuels via propagation parameters Especially precise and reliable measurements and evaluations are obtained by measuring one or more propagation parameters of electromagnetic waves in a wave guide or resonator at least partially filled with fuel and evaluated in an evaluating circuit as t... | 12/03/1991 |
| 5060506 | Method and apparatus for monitoring the content of binary gas mixtures A method and apparatus for continuously monitoring the ratio of gases in a two gas mixture such as a therapeutic oxygen/nitrogen mixture. The gas mixture is passed through a sample tube within which ultrasound waves travel in successive bursts of pulses a... | 10/29/1991 |
| 5043706 | System and method for detecting bubbles in a flowing fluid Reliability of bubble or particle detection in a flowing fluid is improved using a pulsed doppler frequency detector. When an echo signal is received, impliedly indicating the existence of a bubble or particle in the carrier fluid, then, based on the flow... | 08/27/1991 |
| 5041990 | Method and apparatus for measuring entrained gas bubble content of flowing fluid A method and apparatus measures the gas bubble content of a flowing fluid on a continuous basis without extracting a sample of the fluid. A flowing fluid flows into a density sensor via a temperature and pressure sensor where the temperature, pressure and... | 08/20/1991 |
| 5026348 | Apparatus and method for the detection of IV catheter obstruction and extravasation An in-line fluid conduit condition analyzer which includes a chamber placed in the conduit flow path and having one wall forming a piezoceramic bender that varies the chamber volume (or pressure) according to a predetermined waveform or noise spectrum and... | 06/25/1991 |
| 4944191 | Ultrasonic detector An ultrasonic sound generator and receiver are spaced apart from each other so as to receive a projecting portion of a cassette in which a liquid carrying passage is defined by a flexible membrane. The liquid carrying passage in the projecting portion fit... | 07/31/1990 |
| 4926675 | Air detector for liquid-filled sensing lines The present invention utilizes measurements of the characteristic standing pressure wave frequencies in normally liquid-filled pipes to detect the presence of gas bubbles or gas pockets within the pipes. Because gases, for example air, are more compressib... | 05/22/1990 |
| 4911013 | Procedure and apparatus for analyzing pulp slurry A procedure for analyzing air content of a liquid, e.g. pulp slurry, wherein the ratio Iatt /Isc between ultrasound attenuation and scattered ultrasound attenuation and/or the logarithm log (Iatt /Isc) is determ... | 03/27/1990 |
| 4860573 | Composite substrate, intended for an apparatus for quantitative detection of a component present in a gas or liquid A substrate for an apparatus for quantitative detection of a component present in a gas or liquid, in which substrate elastic vibrations can be generated, said substrate being provided with a surface layer adapted to bond said component, so that the vibra... | 08/29/1989 |
| 4858460 | Air detector for liquid-filled sensing lines The present invention utilizes measurements of the characteristic standing pressure wave frequencies in normally liquid-filled pipes to detect the presence of gas bubbles or gas pockets within the pipes. Because gases, for example air, are more compressib... | 08/22/1989 |
| 4821558 | Ultrasonic detector An ultrasonic detector for detecting air in a fluid. A fluid pumping cassette includes an elastomeric member that defines three sides of a fluid passageway, a base of the cassette defining the other side. Resilient lobes on the elastomeric member extend o... | 04/18/1989 |
| 4763525 | Apparatus and method for determining the quantity of gas bubbles in a liquid A method and apparatus for measuring the quantity of bubbles in a gas/liquid mixture. An ultrasonic wave is launched into the mixture and the magnitudes of two reflected waves are measured and compared. The logarithm of the magnitudes of the reflected wav... | 08/16/1988 |
| 4745794 | Analyzer for carbon dioxide in beverages An analyzer typically used in conjunction with a standard carbonated beverage container filling line that determines the concentration of a dissolved gas such as carbon dioxide of a beverage liquid being supplied to the filling line has the following comp... | 05/24/1988 |
| 4730493 | Process and device for ultrasonic detection of gas bubbles in a liquid metal An ultrasonic beam is sent into liquid metal from a transmitting point (3) outside the enclosure (1) containing the liquid metal, the beam is detected outside the enclosure (1) after it has passed through the liquid metal, the amplitude of the ultrasonic ... | 03/15/1988 |
| 4718269 | System for measuring particle transport in a fluid System for measuring particle transport in a fluid, comprising a transmitter for transmitting a wave beam in the direction of a measuring volume in the fluid under the control of an electrical control signal and a receiver receiving, within a reception be... | 01/12/1988 |
| 4689986 | Variable frequency gas-bubble-manipulating apparatus and method A system for detecting gas bubbles in a specimen utilizes a transducer which produces pulses, illustratively of ultrasonic acoustic energy, having predetermined frequency characteristics. A first pulse has an increasing frequency with time, and a second p... | 09/01/1987 |
| 4679435 | Gas content determination of evaporite formations using acoustic emissions during dissolution The present invention provides a method which avoids the expense and danger of previous methods used to discover gas contained in geological formations to be mined. Specifically, it has been found that increasing gas contents of evaporite samples emit inc... | 07/14/1987 |
| 4651555 | Apparatus for detecting discontinuities in a fluid stream Apparatus for detecting discontinuities, such as bubbles, in a fluid stream in a tube in which successive bursts of ultrasonic energy are transmitted through the tube and received. Discontinuities are detected by comparing each received signal against a r... | 03/24/1987 |
| 4628725 | Apparatus and method for analyzing a fluid that includes a liquid phase, contained in a tubular conduit Apparatus and methods for the flow analysis of multiphase fluids including a liquid phase in a tubular conduit use Stoneley waves by exciting and detecting sonic wave energy in the tubular conduit. Information about the Stoneley mode component is obtained... | 12/16/1986 |
| 4607520 | Method and apparatus for detecting discontinuities in a fluid stream Method and apparatus for detecting discontinuities, such as bubbled, in a fluid stream, in which a tube is placed between a transducer transmitting successive bursts of ultrasonic energy and for receiving the bursts. The receiving transducer is connected ... | 08/26/1986 |
| 4571984 | Apparatus and method for detecting gas bubbles in water, and apparatus for handling an oceanographic device The invention provides a side scanning sonar apparatus for detecting gas bubbles in water. This apparatus transmits low frequency sonar signals horizontally through the water and detects the resultant echoes. The echoes due to bubble columns can be discri... | 02/25/1986 |
| 4567749 | Process and apparatus for determining the interfacial area in a two-phase mixture incorporating a gaseous phase flowing in the form of bubbles Process for the determination of the interfacial area in a container containing a two-phase mixture incorporating a liquid phase and a gaseous phase flowing in the liquid phase in the form of bubbles. For a same path of a sequence of ultrasonic sound wave... | 02/04/1986 |
| 4491008 | Method of ultrasonic measurement of the ratio of the volume of gas present in an enclosure containing a liquid-gas mixture to the total volume of the enclosure The invention relates to a method of ultrasonic measurement of the ratio of the volume of gas present in an enclosure containing a diphase liquid-gas mixture to the volume of the enclosure, or void coefficient. Waves at different frequencies are propagate... | 01/01/1985 |
| 4418565 | Ultrasonic bubble detector Ultrasonic bubble detection apparatus utilizes a typically one-piece, rigid housing having a channel defined therein for receiving flow tubing in which bubbles are to be detected. First and second ultrasonic sending and receiving transducers are positione... | 12/06/1983 |
| 4392374 | Transducer coupling apparatus for inhomogeneity detector A transducer coupling member for use with systems for detecting inhomogeneities in fluids flowing in a conduit. A first portion of the member is acoustically coupled to the conduit wall. An electromechanical transducer is mounted upon another portion. The... | 07/12/1983 |
| 4339944 | Ultrasonic particulate identification A method of identifying discontinuities in a flow by transforming an ultrasonic pulse reflected from an unknown discontinuity into a frequency spectrum and comparing that spectrum with the spectra of known discontinuities.... | 07/20/1982 |
| 4290432 | Decompression bubble detectors A decompression bubble detector comprises a pulsed ultra-sound transmitter/receiver which is scanned across a cross-section of tissue and the total number of pulse echoes received in a preselected time interval is recorded. Changes in the total number of ... | 09/22/1981 |
| 4237720 | Ultrasonic particulate sensing A pulse echo device with a concave transmitter-receiver surface located to direct ultrasonic energy to a focal point spaced therefrom transversely of a conduit, the focal point being a distance transversely of the conduit less than twice the thickness of ... | 12/09/1980 |
| 4235095 | Device for detecting inhomogeneities such as gas bubbles A detector comprises a pair of electromechanical transducers for disposition on a fluid-filled conduit in an acoustically coupled relationship, an adjustable gain driving amplifier responsive to the electrical output of one transducer for driving the othe... | 11/25/1980 |
| 4138879 | Sightless bubble detector A detector comprises a pair of electromechanical transducers for disposition on a fluid-filled conduit in an acoustically coupled relationship, an adjustable gain driving amplifier responsive to the electrical output of one transducer for driving the othe... | 02/13/1979 |
| 4130010 | Bubble detector Apparatus for detecting bubbles in drilling mud so that appropriate corrective action may take place prior to a possible blowout. A low frequency acoustic field is transmitted through the drilling mud which causes the displacement of any bubbles rising th... | 12/19/1978 |
| 4112735 | Detection of bubbles in a liquid The invention provides a method and apparatus for detecting a bubble in a containing medium such as a liquid, and comprises sending an ultrasonic signal at the bubble at or above the resonant frequency of the bubble, exciting a doppler signal scattered by... | 09/12/1978 |
| 4083225 | On-line ultrasonic gas entrainment monitor Apparatus employing ultrasonic energy for detecting and measuring the quantity of gas bubbles present in liquids being transported through pipes. An ultrasonic transducer is positioned along the longitudinal axis of a fluid duct, oriented to transmit acou... | 04/11/1978 |
| 4068521 | Ultrasonic air and blood foam detector An ultrasonic air and blood foam detector for use in medical procedures involving extracorporeal handling of blood. A sensor assembly is adapted for positioning about a blood drip chamber and contains ultrasonic transducer means. The blood tube downstream... | 01/17/1978 |
| 3987677 | Method and apparatus for underground deposit detection in water covered areas A plurality of gas sample collecting containers are distributed in a predetermined pattern from a vehicle. The containers are cup shaped but weighted so that the open end sinks first and engages the subaqueous earth laer. Gas migrating upwardly through th... | 10/26/1976 |
| 3974681 | Ultrasonic bubble detector The mode of operation is by ultrasonic through-transmission, and the detector is preferably employed for detecting air bubbles in intravenous feeding tubes to prevent air embolism. Transmission of sound from the transmitter, via the sensor head, to the re... | 08/17/1976 |
| 3974683 | Ultrasonic apparatus for determining the volume of bubbles in liquid An apparatus for ultrasonic testing comprising a pulsed ultrasonic transducer, means for detecting echoes from bubbles in a liquid and means for determining the volume of the bubbles.... | 08/17/1976 |
