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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 8419271 | Apparatus with temperature self-compensation and method thereof A system for compensating a thermal effect is provided and includes a substrate structure and a microcantilever. The substrate structure includes a first piezoresistor. The first piezoresistor is buried in the substrate structure and has a first piezoresistance havi... | 04/16/2013 |
| 8317392 | Surface acoustic wave based micro-sensor apparatus and method for simultaneously monitoring multiple conditions A SAW-based micro-sensor apparatus for simultaneously monitoring acceleration/vibration and temperature utilizing a sensing element configured as a SAW device (e.g., SAW resonator or SAW delay line). The SAW device can be located in different locations on a substrat... | 11/27/2012 |
| 8240911 | Wireless passive temperature sensor A wireless passive temperature sensor comprising a surface acoustic wave (SAW) delay line is constructed on a piezoelectric substrate having a thermal coefficient of frequency. An array of addressable, wireless passive temperature sensors can be used to monitor an a... | 08/14/2012 |
| 8201995 | Method and system for a temperature sensing crystal integrated circuit with digital temperature output Aspects of a method and system for a temperature sensing crystal Integrated circuit with digital temperature output are provided. In this regard, an indication of temperature may be generated in an integrated circuit (IC) comprising a memory, a crystal or crystal os... | 06/19/2012 |
| 8162534 | Element for a vehicle contact with ground, tire and use of a measuring system A ground-contacting component of a vehicle, consisting partly of polymeric compounds, in which at least one wireless temperature measurement system 7 based on surface acoustic wave or bulk acoustic wave technology is embedded in a region of a polymeric compou... | 04/24/2012 |
| 8066430 | Semiconductor substrate temperature determination The invention provides a method and a device for determining the temperature of a semiconductor substrate. A resonance circuit (110) is provided on the semiconductor substrate and is formed by a junction capacitor (11) and an inductor (12). The ... | 11/29/2011 |
| 7993056 | Ultrasonic probe and ultrasonic diagnostic apparatus An ultrasonic diagnostic apparatus includes: an ultrasonic probe in which a first temperature sensor and a second temperature sensor are located posterior to an oscillator; and a surface temperature calculation device for calculating a surface temperature of the ult... | 08/09/2011 |
| 7988351 | Device comprising a piezoelectric resonator element, method for producing the same and method for outputting a signal depending on a resonant frequency The invention relates to a device (31) which comprises at least one piezoacoustic resonator element (2) having a piezoelectric layer (32) and two electrodes that are electrically contacted to the piezoelectric layer (32). The piezoacousti... | 08/02/2011 |
| 7927011 | Method of estimating surface temperature of a diagnostic ultrasound probe The present application discloses a method of estimating a surface temperature of an ultrasound probe having a plurality of transducer elements and a surface, involving: a) establishing a temperature rise function of the surface of the ultrasound probe due to a sing... | 04/19/2011 |
| 7914203 | Method and system for measuring physical parameters with a piezoelectric bimorph cantilever in a gaseous or liquid environment A piezoelectric bimorph cantilever is used for determining physical parameters in a gaseous or liquid environment. The sensor works as a driven and damped oscillator. Contrary to common cantilever sensor systems, the piezoelectric film of the bimorph cantilever acts... | 03/29/2011 |
| 7914202 | First detecting sheet and first thermometric system for detecting and measuring temperature of an object under test, second detecting sheet and second thermometric system for detecting and measuring temperature of a dummy substrate, and heat treatment apparatus using same A first thermometry system for measuring a temperature of an object under test includes a first detecting sheet having crystal oscillators arranged on a first sheet-like object formed of resin, and a first measuring device for measuring the temperature based on freq... | 03/29/2011 |
| 7824098 | Composite mechanical transducers and approaches therefor Mechanical transducers such as pressure sensors, resonators or other frequency-reference devices are implemented under conditions characterized by different temperatures. According to an example embodiment of the present invention, a combination of materials is impl... | 11/02/2010 |
| 7806586 | Composite mechanical transducers and approaches therefor Mechanical transducers such as pressure sensors, resonators or other frequency-reference devices are implemented under conditions characterized by different temperatures. According to an example embodiment of the present invention, a combination of materials is impl... | 10/05/2010 |
| 7798705 | Thermoacoustic tomographic method and thermoacoustic tomograph A thermoacoustic tomographic method for imaging an object, wherein the object is thermally excited by a source and the acoustic waves from the object, which are caused by the thermal excitation, from different directions of the object are detected using at least one... | 09/21/2010 |
| 7785001 | Apparatus and method for sensing change in environmental conditions An apparatus for sensing a change in environmental conditions is disclosed. The apparatus includes a coating or a wire between two surfaces that has a mechanical property changed as a result of a change in the environmental conditions. The change in the mechanical p... | 08/31/2010 |
| 7731420 | Measuring device and method for determining temperature and/or pressure using measuring device At least one transceiver sends ultrasonic pulses through an object, which at least partially transmits ultrasonic pulses, into an element which reflects the ultrasonic pulses. The ultrasonic pulse(s) can be reflected in a temperature-correlated manner from the refle... | 06/08/2010 |
| 7665891 | Differential temperature sensor system and method A differential temperature sensor system and method of determining a temperature shift of an optical resonator and its surroundings are provided. The differential temperature sensor system includes a light generating device capable of generating a beam having a carr... | 02/23/2010 |
| 7549791 | Remotely testable temperature sensor The invention relates to a remotely interrogable SAW (surface acoustic wave) temperature sensor comprising. At least two resonators (T1, saw, T2, saw) have transducers having interdigitated electrodes connected to control buses of design such t... | 06/23/2009 |
| 7434989 | SAW temperature sensor and system A temperature measurement system is characterized by at least one passive surface acoustic wave (SAW) temperature sensor. The sensor includes at least one piezoelectric substrate having an interdigital SAW transducer disposed upon the piezoelectric substrate for con... | 10/14/2008 |
| 7434988 | Low pressure acoustic pyrometer signal generator An acoustic pyrometer measures the average gas temperature across a space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an acoustic signal generator that generates a high amplitude acoustic signal with a ... | 10/14/2008 |
| 7404671 | Dynamic acoustic thermometer Acoustic temperature measurement at a remote location is provided. An acoustic source transmits acoustic radiation to an acoustic receiver along an acoustic path. The path passes through or near the remote location. The temperature is non-uniform along the path. A c... | 07/29/2008 |
| 7387435 | Temperature sensor In a temperature sensor, especially in a temperature sensor using a resonator, based on a frequency of one oscillator circuit (resonator), frequencies of the other one or more oscillator circuits (resonators) are measured, and frequency-temperature characteristics o... | 06/17/2008 |
| 7362226 | Control system, surface, and control device The present invention provides a control system including: plural wireless measuring units, each of which, when receiving a radio signal, uses the signal as an energy source to measure a physical quantity, and generates and sends a radio signal having an attribute r... | 04/22/2008 |
| 7337057 | Methods and apparatus for predicting and/or for avoiding lean blow-outs A method for predicting lean blow-outs (LBOs) in a gas turbine engine includes extracting a plurality of tones in pressure signals representative of pressure within monitored combustor cans, tracking a frequency of a hot tone in each monitored can, and utilizing the... | 02/26/2008 |
| 7299678 | Sensor apparatus A measurement head particularly for borehole use can measure multiple parameters with no electronics in the head and only a single conductor cable. Double-ended tuning forks (26, 28 and 38, 40) in the head are arranged to respond to different parameter... | 11/27/2007 |
| 7278266 | Methods and apparatus for gas turbine engine lean blowout avoidance A method of monitoring and controlling the combustion dynamics of a gas turbine engine system is provided. The system includes at least one gas turbine that includes at least one combustor can. The method includes receiving a signal from a gas turbine engine sensor ... | 10/09/2007 |
| 7254990 | Machine fluid sensor A sensor for sensing one or more properties of a vehicle fluid has a tuning fork resonator adapted to contact the fluid. The tuning fork resonator comprises two tines and is operable to oscillate so that the two tines move in opposite phase at a frequency of less th... | 08/14/2007 |
| 7246939 | Measurement of thermal diffusivity, thermal conductivity, specific heat, specific absorption rate, thermal power, heat transfer coefficient, heat of reaction and membrane permeability by nuclear magnetic resonance This invention utilizes the nuclear magnetic resonance imaging and spectroscopy to experimentally measure thermal diffusivity, thermal conductivity, specific heat, specific absorption rate, thermal power, heat transfer coefficient, heat of reaction and the membrane ... | 07/24/2007 |
| 7156551 | Ultrasound transducer fault measurement method and system Ultrasound transducer temperatures are measured in response to a temperature dependent property of the ultrasound transducer. The temperature is measured without addition of new electronics or hardware retrofits of the transducer. By implementing software and/or har... | 01/02/2007 |
| 7144152 | Apparatus for thermal management of multiple core microprocessors An apparatus for managing the temperature of an integrated circuit having a multiple core microprocessor is described. Specifically, thermal sensors are placed at potential hot spots throughout each microprocessor core. A thermal management unit monitors the thermal... | 12/05/2006 |
| 7113051 | Frequency characterization of quartz crystals Techniques for determining a frequency profile of a quartz crystal in real time. Quartz crystals are subjected to a series of temperature cycles at various temperature rates and the crystal frequencies, crystal temperature parameters, and the temperature rates are m... | 09/26/2006 |
| 7073370 | Method and apparatus for characterizing materials by using a mechanical resonator A method and apparatus for measuring properties of a liquid composition includes a mechanical resonator, such as a cantilever, connected to a measurement circuit. The mechanical resonator can be covered with a coating to impart additional special detection propertie... | 07/11/2006 |
| 7075218 | Tuning fork type crystal component for angular velocity sensor and manufacturing method thereof The present invention provides an angular velocity sensor element that can be produced easily with a high degree of accuracy, and a manufacturing method thereof. In the angular velocity sensor element of the present invention, the lengthwise direction of a tuning fo... | 07/11/2006 |
| 7066643 | Radio frequency temperature sensor and method of calibrating temperature therefor A radio frequency temperature sensor and a method of calibration temperature therefor are disclosed. An active radio frequency temperature sensor including a ring oscillator, a memory, a frequency counter, a radio frequency transmission interface and a micro-control... | 06/27/2006 |
| 7057417 | Voltage conversion circuit and semiconductor integrated circuit device provided with it By using a first delay circuit that delays by a predetermined time a reference pulse signal having a constant pulse width and a second delay circuit that delays by an arbitrary time the output signal of the first delay circuit, a voltage conversion circuit generates... | 06/06/2006 |
| 7045933 | Flat actuator or sensor with internal prestress A flat multilayered component for use as an actuator or a sensor, is described. The flat multilayered component contains a layer of electrically activatable material, a passive middle layer disposed adjacent the layer of electrically activatable material, and a furt... | 05/16/2006 |
| 7039226 | Method and apparatus for modeling momentary conditions of medical objects dependent on at least one time-dependent body function In an apparatus and a method for modeling momentary conditions of a medical object dependent on at least one time-variable body function, at least one further status value of the time-variable body function is calculated on the basis of the geometry of the medical o... | 05/02/2006 |
| 7031861 | Apparatus and method for calibrating a resistance thermometer and gas analyzer employing same In a calibration apparatus and method for a resistance thermometer a reference thermometer is located in thermal contact with a gas composition to generate, during a calibration period, a first reference temperature value for the gas composition at a first temperatu... | 04/18/2006 |
| 7021145 | Acoustic transducer An acoustic transducer for measuring a property of a fluid includes an acoustic pulse generator and buffer assembly. The buffer assembly is between the pulse generator and the fluid. The buffer assembly is composed of a core and a sleeve shrink fitted over the core ... | 04/04/2006 |
| 7018094 | Material analysis In thermography apparatus, a lamp 102 is modulated sinusoidally and a camera 106 captures thermal images at the modulated frequency, but delayed by an adjustable preset delay. A signal delay box 107 is connected between a sinusoidal modulation s... | 03/28/2006 |
