| Patents for G01H 1 - Measuring vibrations in solids by using direct conduction to the detector (4,000) |
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| 11/20/1991 | CN1014815B Thermally self-adjusting mount for proximity sensor |
| 11/19/1991 | CA1292314C Apparatus for evaluating the slippage of a mechanical seal |
| 10/17/1991 | DE4028559A1 Detecting origin of slide bearing defects - by filtering, amplifying, frequency selection and differential quotient formation of sound emission signals |
| 10/16/1991 | EP0429446A4 Non-destructive evaluation of ropes by using transverse vibrational wave method |
| 10/16/1991 | CN2086896U Electric torsional vibration exciter |
| 10/09/1991 | CN2086411U Gradient determining sensor |
| 09/04/1991 | CN1013808B Monitoring and method for exciter shaft torsional vibrations |
| 09/03/1991 | CA1288359C Thermally self-adjusting mount for proximity sensor |
| 08/28/1991 | EP0443714A2 A method and apparatus for processing electrical signals and a stress wave sensor |
| 08/28/1991 | EP0443708A2 An apparatus for controlling an internal combustion engine |
| 08/21/1991 | CN1013612B Damped reaction base for vibration testing |
| 08/20/1991 | US5041989 Method and apparatus for observing operating state of mechanical seal |
| 08/13/1991 | US5038616 Non-intrusive determination of time varying and steady state torsional load magnitudes and locations of a shaft or system of shafts |
| 07/31/1991 | EP0205609B1 Acceleration responsive transducers |
| 07/31/1991 | CN1013405B Method for determinating turbine blade resonance vibration |
| 07/23/1991 | US5033305 Digital torsionmeter |
| 07/16/1991 | US5031459 Turbine generator shaft torsion monitor |
| 07/09/1991 | US5029474 Transducer and method for acoustic emission (AE) testing |
| 06/25/1991 | US5027331 Acoustic quadrupole shear wave logging device |
| 06/25/1991 | US5025790 Graded frequency sensors |
| 06/05/1991 | EP0429446A1 Non-destructive evaluation of ropes by using transverse vibrational wave method |
| 05/15/1991 | EP0427177A2 Vibrator |
| 05/15/1991 | EP0426818A1 Method and means for monitoring of continuous casting |
| 05/14/1991 | US5015949 Steam turbine blade arrival time processor with automatic gain control |
| 05/08/1991 | EP0287592B1 Spurious electromagnetic energy discriminator for electro-optical inspection systems |
| 05/07/1991 | USH912 Ultrasonic liquid-in-line detector for tubes |
| 05/02/1991 | DE3935616A1 Laboratory centrifuge safety monitor - has deflection measurer for oscillatory part controlling drive motor according to measurement |
| 04/30/1991 | US5010769 Automatic pseudokeyphasor generator |
| 04/10/1991 | EP0421065A2 Method and means for vibration control of the wheel system of a car while driving |
| 04/09/1991 | US5005415 Method and apparatus for detecting variations in a process by processing emitted acoustic signals |
| 03/28/1991 | DE3930689A1 Rotating machine vibration spectrum analyser - contains frequency code converter driven by frequency multiplier with gain dependent on desired sensitivity |
| 03/26/1991 | US5001931 Method and apparatus for predicting destruction of a rolling bearing |
| 03/05/1991 | US4996880 Operating turbine resonant blade monitor |
| 02/28/1991 | DE4020119A1 Generating accident prevention signal for thermal turbo machine - evaluating detected rotor bearing and shaft vibration to initiate warning signal |
| 02/27/1991 | EP0413845A1 Method for the early detection of damage to machine elements |
| 02/26/1991 | US4995257 Monitor for shaft vibration in an operating turbine |
| 02/07/1991 | DE4023663A1 Diagnosing mechanical characteristics of machine having rotating parts - detecting damage and/or wear by evaluating vibration signals arising |
| 01/30/1991 | EP0410370A1 Device for dynamic torsion testing of a sample |
| 01/29/1991 | US4989159 Machine monitoring method |
| 01/29/1991 | CA1279475C Blade pitch measurement apparatus and method |
| 01/23/1991 | CN1011341B Method for eliminating sensor drift in vibration monitoring system |
| 01/15/1991 | US4984652 Torsional wave logging tool |
| 01/08/1991 | US4984173 System for aligning a rotating line-shaft |
| 12/25/1990 | US4980844 Method and apparatus for diagnosing the state of a machine |
| 12/18/1990 | US4979125 Non-destructive evaluation of ropes by using transverse impulse vibrational wave method |
| 12/11/1990 | US4977516 Data acquisition device for balancing rotating components of large machinery |
| 12/11/1990 | US4977395 Monitoring device |
| 12/06/1990 | DE4017449A1 Machine mechanical property diagnosis method - analysing state parameters of vibration signals to defect roller braking deflects |
| 12/06/1990 | DE4017448A1 Diagnosing mechanical properties of machines from vibration signals - compared in frequency domain with pattern signals after fast fourier transformation |
| 11/29/1990 | DE3916727A1 Picking-up and evaluating series of irregular sounds - converting to electrical signals and comparing with threshold value for frequency and/or interval analysis |
| 11/27/1990 | US4972713 Sensor of the theft and the like of automobiles |
| 11/22/1990 | EP0397961A2 Graded frequency sensors |
| 11/22/1990 | EP0397718A1 Detector device for operational monitoring of a machine or a process |
| 11/21/1990 | CN1047145A Turbine generator shaft torsion monitor |
| 11/15/1990 | WO1990013375A1 Method and means for monitoring of continuous casting |
| 11/13/1990 | CA1276281C Missing bearing detector |
| 11/07/1990 | CN1010344B Steam trap operation detector |
| 10/18/1990 | WO1990012293A1 Process and device for measuring vibrations, in particular nervous trembling in living organisms |
| 10/18/1990 | DE4012278A1 Diagnostic system for installations with special operating conditions - uses neural network model for efficient, objective diagnosis |
| 10/10/1990 | CN1009966B Apparatus for generating elliptically polarized shear waves |
| 10/02/1990 | US4960109 Multi-purpose temperature sensing probe for hyperthermia therapy |
| 09/18/1990 | US4956999 Methods and apparatus for monitoring structural members subject to transient loads |
| 09/13/1990 | DE3907419A1 Method for preventing damage in a machine or device |
| 09/11/1990 | US4955269 Turbine blade fatigue monitor |
| 08/28/1990 | US4951500 Method for determining the untwist of turbine blades |
| 08/22/1990 | CN1044855A Turbine blade arrival time processor |
| 07/17/1990 | US4941356 Process for detecting insects |
| 07/12/1990 | WO1990007645A1 A method of monitoring machine vibrations |
| 06/22/1990 | CA2006286A1 Turbine blade arrival time processor |
| 06/19/1990 | US4934192 Turbine blade vibration detection system |
| 06/06/1990 | EP0371631A2 Method and apparatus for monitoring structural members subject to transient loads |
| 06/05/1990 | US4932003 Acoustic quadrupole shear wave logging device |
| 05/31/1990 | CA2001926A1 Methods and apparatus for monitoring structural members subject to transient loads |
| 05/29/1990 | US4928521 Method of determining drill bit wear |
| 05/17/1990 | DE3904130A1 Device for measuring the oscillations emitted by a driven unit |
| 05/08/1990 | US4922757 Apparatus for precise detection of blade passing times in a steam turbine |
| 05/07/1990 | CA2002280A1 Turbine blade vibration monitor for non-magnetic blades |
| 05/02/1990 | EP0366286A2 A method and apparatus for processing electrical signals |
| 04/19/1990 | WO1990004237A1 Machine monitoring method |
| 04/17/1990 | CA1267950A1 Method and circuit arrangement for measuring the dynamical behavior of a rotating body |
| 04/13/1990 | CA2000097A1 Machine monitoring method |
| 04/10/1990 | US4914953 Turbine blade vibration monitor for non-magnetic blades |
| 04/03/1990 | US4912978 Apparatus for determining the oscillation parameters of a band |
| 03/13/1990 | US4907456 Sensor probe system |
| 03/07/1990 | EP0357268A2 Multicomponent transducer |
| 03/07/1990 | EP0357104A1 Process and device for detecting defects in moving parts having a central rotating shaft |
| 03/06/1990 | US4905518 Accelerometer mounting assembly |
| 03/06/1990 | US4905517 Multicomponent transducer |
| 02/20/1990 | US4903245 Downhole vibration monitoring of a drillstring |
| 02/20/1990 | US4901575 Methods and apparatus for monitoring structural members subject to transient loads |
| 02/07/1990 | CN1039482A Turbine blade vibration detection system |
| 01/30/1990 | US4897823 Method for location of shocks with a structure-borne sound monitoring system, in particular in pressurized enclosures in power plants |
| 01/30/1990 | US4896537 Shrouded turbine blade vibration monitor |
| 01/24/1990 | CN1039114A Shrouded turbine blade vibration monitor |
| 01/24/1990 | CN1039111A Nonsynchronous turbine blade vibration monitoring system |
| 01/10/1990 | CN1038700A Apparatus for precise detection of blade passing times |
| 01/10/1990 | CN1038696A 涡轮机叶片疲劳监测器 Turbine blade fatigue monitor |
| 12/19/1989 | US4887468 Nonsynchronous turbine blade vibration monitoring system |
| 12/05/1989 | US4885707 Vibration data collecting and processing apparatus and method |
| 12/05/1989 | US4884486 Electronic scratch filter for bowed instruments |