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| Number | Title | Issue Date |
| 8082800 | Saw torque and temperature sensor with improved temperature sensitivity A contactless SAW based torque and temperature sensor comprising a first (2) and second (3) SAW resonator provided on a substrate made of Y+34° cut of quartz. The first SAW resonator (2) has its principle axis inclined at +45° to the X-axis of... | 12/27/2011 |
| 7661321 | Force sensing clevis insert A sensor includes a clevis insert for reception within a first bore of a clevis. The clevis insert is configured to accommodate a latch pin. A strain sensing element is operatively associated with the clevis insert for detecting mechanical strain imparted to the cle... | 02/16/2010 |
| 7654148 | Ultrasound communication system for metal structure and related methods Embodiments of the present invention beneficially provide an ultrasound communication system and methods of ultrasound communication for diagnostics and prognostics of structures. For example, ultrasound transmitters are connected to a metal or composite structure a... | 02/02/2010 |
| 7578200 | Method and apparatus for measuring paper sample stiffness A method for measuring the rigidity of paper or other products made from cellulose fibers wherein the paper is torn and a digitized sound recording is made during the tearing process which is then analyzed to determine the percentage of time during which characteris... | 08/25/2009 |
| 7520179 | Method and apparatus for measuring force particularly torque A method and apparatus for measuring the force applied by a first member coupled to a second member by a connecting body, by: transmitting a cyclically-repeating energy wave through the connecting body from a first location thereon to a second location thereon; meas... | 04/21/2009 |
| 7411403 | Electrical switching apparatus and method employing active acoustic sensing to detect an electrical conductivity fault of a power circuit A circuit breaker detects a loose electrical connection condition of a power circuit. The circuit breaker includes first and second lugs, first and second acoustic couplers acoustically coupled to the power circuit, separable contacts electrically connected in serie... | 08/12/2008 |
| 7398698 | Smart repair patch and associated method A system and method for identifying defects in a repair patch applied to a structure are provided. The system includes a sheet of material configured to be attached to the structure, and a mechanism operable to generate stress waves within and along the sheet of mat... | 07/15/2008 |
| 7380464 | Out-of-plain strain elimination acoustic wave torque sensor A torque sensor is disclosed based on a SAW die configured on a surface of a plate, and an isolator formed from a flexible material. The isolator is rigidly mounted to the plate, such that the isolator flexes when a force perpendicular to the surface of the plate ar... | 06/03/2008 |
| 7367236 | Non-destructive inspection system and associated method An assembly, system, and method for identifying defects in a structure are provided. The assembly includes a structure of a metallic or composite material, and a flexible sheet of material positioned adjacent to the structure. The assembly also includes a plurality ... | 05/06/2008 |
| 7355176 | Method of forming TEM specimen and related protection layer A method of forming a protection layer on a specimen for TEM inspection and a method of forming a specimen for TEM inspection are provided. The method of forming a protection layer on a specimen for TEM inspection generally comprises coating a wafer slice comprising... | 04/08/2008 |
| 7347105 | Method for the analysis of a test specimen of reducible material that contains iron A method for the analysis of the properties of a test specimen comprises: arranging a test specimen between contact surfaces; continuously reducing the distance between the contact surfaces; measuring the diameter of the test specimen when the test specimen makes co... | 03/25/2008 |
| 7347104 | Arrangement and method for the analysis of the strength of a specimen of reducible material that contains iron A method for the analysis of the strength of a test specimen of reducible material that contains iron during the use of an arrangement comprises: a) arranging a test specimen between adjacent contact surfaces of first and second devices of the arrangement; b) contin... | 03/25/2008 |
| 7342665 | System and method for control of paint thickness The invention is directed to a system and method for implementing process control for paint thickness using sonic NDE techniques. The system may, for example, generate ultrasound waves in a test object during the manufacturing process. A detector such as an interfer... | 03/11/2008 |
| 7327637 | Acoustic pulse actuator The invention provides an acoustic actuator, including an acoustic stress wave generator and an actuation material operatively positioned relative to the acoustic stress wave generator for delivery of acoustic stress waves from the generator to the actuation materia... | 02/05/2008 |
| 7302864 | Torque sensor A plurality of acoustic wave sensing devices can be provided, which are mechanically simulated for implementation upon a quartz wafer substrate. The quartz wafer substrate is appropriately etched to produce a quartz diaphragm from the quartz wafer substrate. A plura... | 12/04/2007 |
| 7284445 | Strain waveform control apparatus, strain waveform regulating member, strain waveform control method by using strain waveform control apparatus, and strain waveform control program A strain waveform control apparatus of the present invention is adapted to horizontally supporting a printed circuit board over a trestle and cause strains on the printed circuit board by a dropped rigid ball with buffer blocks being located on both surfaces of the ... | 10/23/2007 |
| 7266461 | Methods for adjusting stress wave velocity-based predictions of lumber stiffness and warp propensity of a timber-based raw material group Methods are provided for predicting properties based on stress wave velocity measurements, such as modulus of elasticity (MOE) and/or warp potential of trees and/or logs from a timber-based raw material group (“TBRMG”). The methods provide a formula allowing com... | 09/04/2007 |
| 7263892 | Passive tire pressure sensor and method A surface acoustic wave device includes a micro-machined pressure transducer for monitoring tire pressure. The device is configured having a micro-machined cavity that is sealed with a flexible conductive membrane. When an external tire pressure equivalent to the ca... | 09/04/2007 |
| 7251550 | Aircraft accessory monitor Methods and apparatus are provided for monitoring an aircraft accessory. The apparatus comprises a processor associated with said aircraft accessory, a transducer coupled to said processor and operable to produce parametric data relating to said aircraft accessory a... | 07/31/2007 |
| 7243544 | Passive and wireless acoustic wave accelerometer An acoustic wave acceleration sensor comprises an acoustic wave device including a plate that functions as a propagation medium and at least one interdigital transducer configured upon the plate. One or more antennas can be integrated with the acoustic wave device, ... | 07/17/2007 |
| 7194914 | Apparatus and method for scanning internal structure of O-rings Some O-rings can include internal flaws that can eventually lead to failure of the O-rings during use. In order to scan an internal structure of an O-ring, the present disclosure includes an apparatus with an apparatus body to which an O-ring support and a transduce... | 03/27/2007 |
| 7191663 | Testing apparatus and method of deriving Young's modulus from tensile stress/strain relationships A method of testing and a tester apparatus to determine the axial stress and strain of cements under the temperature and pressures encountered by cement during use in wellbore environments. Using these stress and strain measurements, the Young's Modulus may be estab... | 03/20/2007 |
| 7185546 | Systems and methods for measuring belt tension Systems and methods for measuring belt tension in a semiconductor processing system include measuring a natural sound or an acceleration of the belt in the semiconductor processing system; digitizing the natural sound or the acceleration; determining the frequency a... | 03/06/2007 |
| 7140261 | Acoustic wave flow sensor An acoustic wave flow sensor is disclosed, which includes a sensor substrate and an acoustic wave diaphragm etched upon the sensor substrate, wherein mechanical stress or strain is concentrated in the acoustic wave diaphragm. One or more interdigital transducers can... | 11/28/2006 |
| 7096736 | Passive tire pressure sensor and method A surface acoustic wave device includes a micro-machined pressure transducer for monitoring tire pressure. The device is configured having a micro-machined cavity that is sealed with a flexible conductive membrane. When an external tire pressure equivalent to the ca... | 08/29/2006 |
| 7083327 | Method and apparatus for detecting kissing unbond defects A active thermographic method for detecting subsurface defects in a specimen, particularly kissing unbond defects, includes heating a specimen, applying a force to the surface of the specimen to shift and separate the walls of the defect, and obtaining thermographic... | 08/01/2006 |
| 7082833 | Method and apparatus for determining and assessing a characteristic of a material An acoustic energy-based, non-contact or contact testing approach provides low cost, highly accurate, and reliable information to (a) identify flaws and anomalies and (b) assess the integrity of a particular material. This approach is not hindered by surface conditi... | 08/01/2006 |
| 7051597 | Apparatus and methods for tension testing of curved specimens Apparatus and methods for tension testing of curved composite specimens are disclosed. In one embodiment, an apparatus for tension-testing first and second curved specimens includes a first end member adapted to be coupled to first end portions of the first and seco... | 05/30/2006 |
| 7043999 | Contactless measurement of the stress of rotating parts The invention relates to a method for measuring mechanical stresses of a rotating part (1) in an essentially closed metal housing. The rotating part comprises a sensor (2) which reflects electromagnetic waves and which can be measurably deformed as a r... | 05/16/2006 |
| 7039530 | Fluid measurement Techniques for fluid measurement include the ability to introduce a vibration to a container wall and to detect the vibration after the vibration has propagated at least partially around the container wall. Based on the detection of the vibration, the techniques als... | 05/02/2006 |
| 7021155 | Universal material testing method and device therefor A load increasing in a stepped manner from an initial load is applied to a test piece (4) of material in order to examine mechanical properties of the material by applied load, but the load having a next step load added thereto is applied to the test piece af... | 04/04/2006 |
| 6962082 | Device and method for acoustic diagnosis and measurement by pulse electromagnetic force The invention provides an acoustic diagnosis/measurement apparatus/method using a pulse of electromagnetic force, capable of non-destructively and precisely diagnosing or measuring corrosion, adhesion, the cover depth, and/or the diameter of a reinforcing iron rod i... | 11/08/2005 |
| 6941819 | Apparatus and method for determining the dynamic mechanical properties of a cement sample An apparatus for determining dynamic mechanical properties of a cement sample. The apparatus includes an isolator located within a cavity defined by a body. The isolator has an attached end that engages the body proximate a narrow end of the cavity. A space between ... | 09/13/2005 |
| 6938465 | Method of rating brittleness of coating substance and device for implementing the brittleness rating method Brittleness of a coating substance such as a coating film that is too brittle and/or too thin to be independently removed or handled is rated on the basis of an outcome of detection of acoustic emissions which are produced when a test film piece prepared by laminati... | 09/06/2005 |
| 6895830 | System and method for testing linkages A system and method for testing at least one joint in a linkage includes a platform system, a torque system, an articulation assembly and a fault detection system. The platform system receives a first shaft connected to a first joint in the linkage and the torque sy... | 05/24/2005 |
| 6810750 | Encoded surface acoustic wave based strain sensor A passive SAW strain sensor for remotely sensing strain within a surface has a receiving SAW correlator with a signal input interdigitated transducer and a plurality of adjacent successive spaced interdigitated output transducers on a piezoelectric substrate, and a ... | 11/02/2004 |
| 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 |
| 6732566 | Device for side impact detection in a motor vehicle A device for side impact detection in a motor vehicle, and a plausibility sensor side impact detection. This plausibility sensor is located in a loudspeaker which is already present in the lateral part for playback of music. This loudspeaker is used as a low-frequen... | 05/11/2004 |
| 6619135 | Force sensor having a substrate for measuring deformation of the substrate A force sensor having a substrate for measuring forces is provided, on which substrate a first path and a second path for travel of acoustic surface waves are arranged. The two paths are arranged essentially parallel to one another and their lengths are d... | 09/16/2003 |
| 6597997 | Non-invasive pipe inspection system The invention is directed to a system and method for non-invasive pipe inspection. According to one embodiment, the system includes a processor, an analyzer, and a wave launcher. The wave launcher is adapted to transmit an input wideband waveform having a... | 07/22/2003 |
