| Patents for G01H 13 - Measuring resonant frequency (1,015) |
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| 03/03/2015 | US8966980 External force detecting device and external force detecting sensor |
| 03/03/2015 | US8966979 Method and device for measuring the thickness of any deposit of material on an inner wall of a structure |
| 02/26/2015 | US20150056077 Detection system for identifying blockages in guide vanes of a turbine engine |
| 02/26/2015 | US20150053007 Method and system for authenticating a device |
| 02/26/2015 | US20150053006 Method and system for authenticating using a quartz oscillator |
| 02/24/2015 | CA2764416C Determining the resonance parameters for mechanical oscillators |
| 01/08/2015 | WO2015002594A1 A force measurement method and means |
| 12/24/2014 | CN102472661B 用于测量管的共振频率的系统和方法 System and method for measuring the resonant frequency of the tube for |
| 11/04/2014 | US8880357 Apparatus for estimating a resonant frequency of a wind turbine tower |
| 10/28/2014 | US8869597 Apparatus and method for operating an apparatus for determining and/or monitoring at least one physical process variable |
| 09/24/2014 | EP2780676A1 System and method for measuring the frequency of a vibrating object |
| 09/18/2014 | US20140262594 Passive acoustic resonator for fiber optic cable tubing |
| 09/18/2014 | US20140260622 Apparatus for gauging liquid or solid mass contained in a vessel and method for using same |
| 09/18/2014 | US20140260620 Method and device for analyzing resonance |
| 08/21/2014 | US20140230553 Method of Detecting Movement Using a Metallic Conductors |
| 08/12/2014 | US8804265 Calibration of a resonance frequency filter |
| 08/07/2014 | US20140217945 Control techniques for motor driven systems utilizing back-emf measurement techniques |
| 07/10/2014 | US20140190261 Fan vibration testing apparatus |
| 07/10/2014 | US20140190238 Vibratory meter and method for determining resonant frequency |
| 07/08/2014 | US8770025 Physical quantity sensor |
| 06/24/2014 | US8759655 Drum and drum-set tuner |
| 06/19/2014 | WO2014091713A1 Natural-frequency measurement device, belt-tension calculation program and method, and belt natural-frequency calculation program and method |
| 06/19/2014 | WO2014091697A1 Natural-oscillation measurement device |
| 06/05/2014 | US20140151457 Ejector devices, methods, drivers, and circuits therefor |
| 06/04/2014 | EP2737287A2 Method for calculating the oscillation amplitude of a sonotrode |
| 06/04/2014 | CN103837223A Inherent frequency measuring system and method of automobile steering system |
| 05/28/2014 | CN102105767B 用于检测边界层转变的振荡元件传感器 For oscillation element sensor to detect boundary layer transition |
| 05/21/2014 | EP2732259A1 Method for determining the stability of a mast that has been properly installed at an installation site |
| 05/15/2014 | DE102012219128A1 Method for determining anatomical causes of snoring person during surgery, involves determining localization of sound formation place in vowel tract by distance from acoustic source to delta using resonant frequencies of transfer function |
| 05/13/2014 | US8720272 Method and device for vibration analyses and sample database therefor and use of a sample database |
| 05/08/2014 | US20140123757 Method for measuring mechanical resonance frequency using servo driver |
| 04/17/2014 | US20140102200 Methods for non-destructively evaluating a joined component |
| 04/17/2014 | US20140102199 Device for Detecting Abrasive Wear |
| 04/10/2014 | US20140096608 Method and System for Measuring Belt Tension |
| 03/25/2014 | US8677824 Integrated torsional-microbalance device in MEMS technology and fabrication process thereof |
| 03/13/2014 | DE102012018417A1 Sensing device i.e. tool or workpiece sensing device, for use in measuring unit for e.g. detecting presence of tool and workpiece, has piezoelectric body connected with control device during approaching or contact of tool or workpiece |
| 03/11/2014 | US8667843 Resonance testing apparatus and articulation assembly |
| 03/06/2014 | US20140060188 Non-destructive evaluation methods for aerospace components |
| 02/26/2014 | EP2700919A1 Circuit for measuring the resonance frequency of nanoresonators |
| 02/26/2014 | CN203455071U Concrete pavement resonant frequency measuring system for resonant breaker |
| 02/19/2014 | CN103597327A Method for calculating the oscillation amplitude of a sonotrode |
| 02/04/2014 | US8640544 Method for analyzing structure safety |
| 01/28/2014 | US8635911 Apparatus and method for measuring buoyant mass and deformability of single cells |
| 01/21/2014 | US8635048 Methods for characterizing vibration of a rack structure |
| 01/16/2014 | US20140016666 Device for measuring the temperature of a vibrating beam and application to the improvement of the precision of measurement of a vibrating-beam sensor |
| 01/16/2014 | US20140013848 Measuring system having electromechanical resonators, method for manufacturing such a system, and method for reading at least two electromechanical resonators |
| 12/04/2013 | EP2668510A1 Device for measuring the temperature of a vibrating beam and application to the improvement of the precision of measurement of a vibrating-beam sensor |
| 11/28/2013 | WO2013173860A2 Integrity of a civil structure |
| 11/27/2013 | CN103412057A Weak oscillation attenuation signal parameter identification based on stochastic resonance and moving least square |
| 11/27/2013 | CN103411662A Method for measuring batting performance of base plate of table tennis bat |
| 11/26/2013 | US8590379 Systems and methods for resonance detection |
| 11/05/2013 | US8573031 Tunable multiwalled nanotube resonator |
| 10/29/2013 | US8567249 Nanomechanical resonance detector |
| 10/24/2013 | US20130276538 Non-Powered Impact Recorder |
| 10/23/2013 | EP2652467A1 Apparatus for estimating a resonant frequency of a wind turbine tower |
| 09/19/2013 | WO2013135138A1 Method for measuring mechanical resonance frequency by using servo driver |
| 09/19/2013 | US20130245158 Methods of measuring a characteristic of a creping adhesive film and methods of modifying the creping adhesive film |
| 09/18/2013 | CN103308144A Fiber Bragg grating vibration sensing measurement system and use method |
| 09/11/2013 | CN102027660B A method and a device for estimating the clamping force on a winding package of a transformer or a reactor |
| 09/10/2013 | US8528408 Passage detection apparatus of object |
| 09/10/2013 | US8528392 Device and method for determining the oscillatory behavior of a brake lining in the field of motor vehicles |
| 08/28/2013 | CN203163874U Light hammer device for testing dynamic characteristic parameters of flexible structure |
| 08/28/2013 | CN103267570A Concrete pavement resonant frequency measuring system for resonant breaker and application thereof |
| 08/21/2013 | CN203148561U A detector used for a circular saw blade |
| 08/07/2013 | CN103234725A Method for testing vibration damage limit of anti-skidding braking control box |
| 08/01/2013 | US20130192372 Resonant sensor measurement device |
| 07/25/2013 | WO2013017452A3 Method for calculating the oscillation amplitude of a sonotrode |
| 07/23/2013 | US8494790 System and method for detecting structural damage |
| 07/18/2013 | US20130180336 Vibration detector and method |
| 07/16/2013 | US8485033 Testing technique for determination of the dynamic poisson's ratio of a material with longitudinal and cross-sectional resonant frequencies of a circular solid rod specimen |
| 07/09/2013 | US8482408 Explosives and contraband detection system |
| 06/25/2013 | US8473262 Self-cleaning submerged instrumentation |
| 06/06/2013 | WO2013082620A1 Wavelength division sensing rf vibrometer for accurate measurement of complex vibrations |
| 05/29/2013 | CN202956181U Tester for vocal resonance in thoracic cavity |
| 05/28/2013 | US8448516 Apparatus and method for assessing percutaneous implant integrity |
| 05/23/2013 | WO2013074389A1 System and method for measuring the frequency of a vibrating object |
| 05/23/2013 | WO2013072175A1 Method for determining the natural frequencies of turbine or compressor blades |
| 05/23/2013 | US20130125653 System and method for measuring the frequency of a vibrating object |
| 05/23/2013 | DE102008040174C5 Verfahren zum Betrieb einer Maschine mit zumindest einem rotierenden Bauteil Method for operating a machine having at least one rotating component |
| 05/22/2013 | EP2594913A1 Method for determining the natural frequencies of turbines or compressor blades |
| 05/08/2013 | CN101849169B Method and system for turbine blade characterization |
| 05/01/2013 | EP2585800A1 Self-cleaning film thickness measuring apparatus, and method of cleaning film thickness measuring apparatus |
| 04/24/2013 | CN102589675B Method for measuring mechanical resonance frequency by using servo driver |
| 04/24/2013 | CN101539113B Apparatus and method for determining a resonant frequency of a wind turbine tower |
| 04/04/2013 | US20130081467 Integrated torsional-microbalance device in mems technology and fabrication process thereof |
| 03/28/2013 | US20130074600 Part evaluation system/method using both resonance and surface vibration data |
| 03/21/2013 | WO2013037880A1 Method for measuring the dynamic properties of a mechanical structure |
| 03/21/2013 | US20130068024 Device and method for monitoring rotor blades of a turbine |
| 03/13/2013 | CN202793793U Large wind generation set bearing fault diagnosis system |
| 03/07/2013 | US20130055815 Signal processing circuit, physical quantity detection apparatus, angular velocity detection apparatus, integrated circuit device, and electronic instrument |
| 02/21/2013 | US20130046487 Viscoelasticity measuring method and viscoelasticity measuring apparatus |
| 02/19/2013 | US8380450 Determination of blade vibration frequencies and/or amplitudes |
| 02/12/2013 | US8371184 Flow velocity and pressure measurement using a vibrating cantilever device |
| 02/07/2013 | WO2013017452A2 Method for calculating the oscillation amplitude of a sonotrode |
| 01/30/2013 | CN202710174U Vibration pickup |
| 01/17/2013 | WO2013007382A1 Method for determining the stability of a mast that has been properly installed at an installation site |
| 01/17/2013 | CA2851725A1 Method for determination of the stability of a mast that has been properly set up at an installation site |
| 01/03/2013 | WO2013000739A1 Capacitive sensor element for detecting a displacement, comprising several electrode pairs, and method for operating the same |
| 01/03/2013 | US20130003779 Wireless measuring apparatus and wireless temperature measurement system |
| 12/27/2012 | US20120330578 Severity analysis apparatus and method for shafts of rotating machinery |