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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6925879 | Vibration analyzer and method A tool and method to identify a defect in a vehicle through a vibration frequency is provided. To identify the defect in a vehicle, a sensor senses a vibration frequency and generates a signal in response to the vibration frequency. In addition, a signal spectrum an... | 08/09/2005 |
| 6925870 | Ultrasonic fill level device and method A fluid level monitoring system 20 includes an ultrasonic interrogation device 30 acoustically coupled to a sidewall 25 of container 22 and produces ultrasound that travels through the liquid 24 along a transverse path 32 an... | 08/09/2005 |
| 6923065 | Apparatus for testing aramid fiber elevator cables An apparatus and method for inspecting and calculating the residual strength of an aramid fiber rope driving an elevator to determine when such rope is in need of replacement. The apparatus comprises a transmitter for introducing an acoustic wave that will travel al... | 08/02/2005 |
| 6920793 | Systems and apparatus for airborne ultrasonic testing of package and container seals Systems and devices for testing or inspecting the integrity of package closure seals using contact and non-contact ultrasonic systems wherein a relative movement is created between a package seal and at least one ultrasonic transmitting transducer and at least one r... | 07/26/2005 |
| 6920790 | Apparatus for in-situ nondestructive measurement of Young's modulus of plate structures A method and apparatus for determining stiffness of a plate-like structure including a monolithic or composite laminate plate entails disposing a device for generating an acoustical pulse against a surface of the plate and disposing a detecting device against the sa... | 07/26/2005 |
| 6920791 | Ultrasound monitoring of overlapping welded joints between sheets In a method and a device for the ultrasonic monitoring of overlapping welded joints between a first sheet and a second sheet pulses are irradiated at an angle of between 15 and 80° into the first sheet by a first rotating probe head. The rotating probe head is arra... | 07/26/2005 |
| 6918292 | Cement expansion/contraction test method An apparatus for measuring volumetric changes in cement as the cement is exposed to pressures and temperatures to simulate down-hole conditions, in a high-pressure high-temperature chamber is described. The apparatus is described a mold having a first section adjace... | 07/19/2005 |
| 6917895 | Method for determination of roll density A method for determining roll density in connection with a web reel. A known relation between the length (l), diameter (D), basis weight (b) and density (ρ) of the wound roll, formula (1) is used. Distortions caused in the measurement results by noise and other dis... | 07/12/2005 |
| 6912907 | Ultrasonic apparatus and method for measuring the concentration and flow rate of gas An apparatus for measuring a gas concentration comprises a conduit through which an objective gas to be measured flows, a ultrasonic transmitting and receiving element fixed in a straight portion of the conduit and a reflecting plate fixed in the straight portion to... | 07/05/2005 |
| 6911929 | Method and apparatus for directly digitizing microwave signals Described is a method and an apparatus of directly digitizing microwave signals reflected at a filling product surface of a filling product present in a receptacle, in which method the microwave signals reflected at the filling product surface are sampled unmodified... | 06/28/2005 |
| 6904806 | Electronic intelligent indenter An electronic intelligent indenter system that determines the hardness and the case depth of a hardened portion of a test part in a non-destructive manner. The system employs an electronic indenter tool having a tip. To determine the depth of the case hardened porti... | 06/14/2005 |
| 6902316 | Non-invasive corrosion sensor The non-invasive corrosion sensor includes a heat sink, at least two peltiers, a reference standard and a data acquisition device. Each peltier has a negative side and a positive side, and each peltier communicates with the heat sink such that the negative side of e... | 06/07/2005 |
| 6898550 | Monitoring activity of a user in locomotion on foot In one embodiment, a method involves determining at least one calculated parameter based upon at least one determined performance parameter of the user and at least one determined variable physiological parameter of the user. In another embodiment, a method involves... | 05/24/2005 |
| 6892566 | Gas concentration sensor A gas concentration sensor includes a measurement chamber for measuring a concentration of a specific gas component in a gas under measurement; an inflow path for allowing inflow of the gas under measurement thereinto and an outflow path for allowing outflow of the ... | 05/17/2005 |
| 6889551 | Method of estimating timber stiffness profiles The invention relates to methods and apparatus for estimating stiffness or elasticity profiles across timber. This involves measuring a velocity of a plane compression wave propagating in the timber, determining density information relating to the timber and estimat... | 05/10/2005 |
| 6883376 | Method for determining the wall thickness and the speed of sound in a tube from reflected and transmitted ultrasound pulses A method for the determining ultrasonic sound propagation speed and wall thickness of a tubular object. Time-domain and frequency-domain analyses are used, where the latter can determine acoustic dispersion if the specimen is made up of a dispersive material. Data i... | 04/26/2005 |
| 6877375 | System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy A system for determining a property of a fluid based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection spectru... | 04/12/2005 |
| 6876947 | Monitoring activity of a user in locomotion on foot In one embodiment, a method includes steps of: (a) identifying an average foot contact time of a user during a first outing; (b) identifying an average pace of the user during the first outing; (c) defining a relationship between foot contact times of the user and c... | 04/05/2005 |
| 6871545 | System and method for measuring stiffness in standing trees A system for non-destructive testing using acoustic techniques includes first and second measuring probes and an electronic unit. Each probe includes a penetrating end and a retaining flange end. Each probe further includes a handle slideably coupled to the probe an... | 03/29/2005 |
| 6865948 | Method of wafer edge damage inspection A source of ultrasound waves or energy is directed at the wafer that is to be inspected in a direction that is essentially perpendicular with the surface of the wafer. The ultrasonic waves are intercepted and analyzed after these waves have passed through the wafer ... | 03/15/2005 |
| 6862920 | Fluid parameter measurement in pipes using acoustic pressures At least one parameter of at least one fluid in a pipe is measured using a spatial array of acoustic pressure sensors placed at predetermined axial locations along the pipe 12. The pressure sensors provide acoustic pressure signals, which are provided to a si... | 03/08/2005 |
| 6854338 | Fluidic device with integrated capacitive micromachined ultrasonic transducers The present invention provides fluidic devices and systems which have micromachined ultrasonic transducers integrated into microchannels. The ultrasonic transducers generate and receive ultrasonic waves. The transducers can be disposed and operated to measure fluid ... | 02/15/2005 |
| 6844537 | Method and device for measuring the velocity of a moving surface The invention includes a device for measuring the velocity of a target that includes an array of vertical cavity surface emitting lasers having an energy output, a first lens configured to capture the energy output of the array and project it onto the target whose v... | 01/18/2005 |
| 6843129 | Ultrasound measurement of the thickness of a weakly reflective sublayer by echo period summation An ultra sonic sound measurement is used to determine the thickness of a partial layer in a multi-layered structure with reduced boundary surface reflections. A plurality of transmission pulses are produced on a predetermined point on the structure with the help of ... | 01/18/2005 |
| 6837109 | Material thickness measurement method and apparatus Longitudinal and shear ultrasonic waves are generated inside a material by irradiating a laser beam onto a first surface, e.g., incident surface, of the material. An ultrasonic longitudinal wave and a mode converted wave reflected by a second surface, e.g., a bottom... | 01/04/2005 |
| 6829940 | Method and apparatus for measuring surface wave traveling time A method is provided for measuring the surface travel time of a surface wave between first and second points on a surface. First and second spaced apart transducers are disposed substantially perpendicular to a surface. The direct travel times for each transducer ar... | 12/14/2004 |
| H2112 | Method for measuring coating thickness using ultrasonic spectral tracking A method and an apparatus are provided for measuring the thickness of a coating material using ultrasonic signals. A broad band of frequencies is transmitted by a transducer towards a layer of coating layer on a substrate and a trailing signal is received from the c... | 12/07/2004 |
| 6823716 | Device for precision measurement of speed of sound in a gas A sensor for measuring the speed of sound in a gas. The sensor has a helical coil, through which the gas flows before entering an inner chamber. Flow through the coil brings the gas into thermal equilibrium with the test chamber body. After the gas enters the chambe... | 11/30/2004 |
| 6823715 | Gas concentration measuring apparatus and method A gas-concentration measuring apparatus for measuring the concentration variation of gas residing in a target region. The gas-concentration measuring apparatus comprises an ultrasound-transmitter adapted to transmit an ultrasound in response to an ultrasound-generat... | 11/30/2004 |
| 6822183 | Method of selecting wood for chemical pulping A method of selecting bulk wood units for chemical pulping in alkaline conditions which consists of establishing a reference scale by selecting a test sample, measuring the acoustic velocity through each sample units, selecting acoustic velocity bands from the sampl... | 11/23/2004 |
| 6815694 | Apparatus and method for probing light absorbing agents in biological tissues A method and apparatus are presented for detecting an effect of interactions of electromagnetic radiation with ultrasound radiation at different locations within a region of interest in a scattering medium to thereby enable imaging of said medium. A plurality of seq... | 11/09/2004 |
| 6810742 | Method of and an apparatus for determining the speed of sound in a material The speed of sound c is determined in a material as a function of the temperature T by heating an end of an elongated sample body of the material of the temperature and determining the time difference for the receipt of echoes from two reflective zones at the heated... | 11/02/2004 |
| 6795191 | Ultrasonically assisted optical media sensor system A print media sensor (10) according to the present invention determines a print medium type by utilizing an ultrasonic transducer (22) to vibrate a print medium (28) at a resonant frequency of the print medium (28). The print medium (2... | 09/21/2004 |
| 6789426 | Microfluidic channels with integrated ultrasonic transducers for temperature measurement and method There is described a method and apparatus for measuring temperature of a fluid in a microchannel of the type having spaced walls. An ultrasonic transducer transmits ultrasonic waves transmitted from one wall to the opposite wall. A processor determines the time-of-f... | 09/14/2004 |
| 6786633 | Method and arrangement for acoustically determining a fluid temperature In a method and an arrangement for acoustic determination of an instantaneous fluid temperature, acoustic velocity V in a fluid is monitored and an output signal related to the acoustic velocity is generated. A conventional temperature sensor senses a fluid temperat... | 09/07/2004 |
| 6782732 | Method for non-destructive stress wave testing of wood The present invention discloses a method for evaluating the sound speed end dynamic modulus of elasticity of wood by non-destructive stress wave testing, wherein a timber specimen of long post is placed steadily on a sensor near the center with friction, acting on t... | 08/31/2004 |
| 6772092 | Method for generating coating film build usage and cost impact from Cpk's A computer program for correlating coatings' material usage and cost impact with coatings ranges evaluated against an industry Cpk standard. Optimum range values are selected from the process and/or coatings applicators' manufacturer guidelines. ... | 08/03/2004 |
| 6769306 | Log cutting procedures Use of a single end testing of stems of felled trees whereby by inducing a sonic wave with an impact and by reference to detected reflections and with a knowledge of the length of the stem the stiffness and/or strength characteristics of the stem or logs to be cut t... | 08/03/2004 |
| 6769293 | Detection of liquid in gas pipeline An apparatus and related method for measuring the presence or degree of stratified flow in a two-phase flow is disclosed. A first speed of sound for the fluid flowing through the pipeline is measured for an ultrasonic signal that would reflect from stratified flow, ... | 08/03/2004 |
| 6764215 | Method, a measuring cell and a system for measuring very small heat changes in a sample The present invention relates to a method, a measuring cell and a system for measuring very small heat changes in a sample. The system comprises a measuring cell 16 for containing the sample during the measurement process, at least one electromagnetic radiati... | 07/20/2004 |
