| Patents for G01H 9 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means (3,383) |
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| 09/05/1995 | US5448058 Optical signal detection apparatus and method for preventing polarization signal fading in optical fiber interferometric sensor systems |
| 08/15/1995 | US5442720 Switched array |
| 08/15/1995 | US5440914 Method of measuring distribution and intensity of ultrasonic waves |
| 08/08/1995 | US5438882 Rotating shaft vibration monitor |
| 07/18/1995 | US5434668 Laser vibrometer identification friend-or-foe (IFF) system |
| 07/18/1995 | US5433102 Ultrasonic wave energy detection and identification |
| 06/08/1995 | WO1995015480A1 Simple microamplitude vibration detector |
| 05/30/1995 | US5420688 Interferometric fiber optic displacement sensor |
| 05/09/1995 | US5414510 Method and apparatus for measuring surface movement of an object using a polarizing interfeometer |
| 05/04/1995 | DE3153611C2 Fibre-optic phase modulator e.g. for hydrophone |
| 04/27/1995 | WO1995011431A1 Systems and methods for applying grid lines to a shaft and sensing movement thereof |
| 04/25/1995 | US5410405 Method and apparatus for measuring surface movement of a solid object that is subjected to external vibrations |
| 04/18/1995 | US5408305 Method and apparatus for analyzing nodal interference patterns vibrationally induced in semi-monocoque structure |
| 04/12/1995 | EP0647309A1 Distributed fiber optic sensing system |
| 04/04/1995 | US5404224 Polarizing optical interferometer having a dual use optical element |
| 04/04/1995 | US5402786 Magneto-acoustic resonance imaging |
| 03/28/1995 | US5402235 Imaging of ultrasonic-surface motion by optical multiplexing |
| 03/28/1995 | US5402233 Furnace control apparatus using polarizing interferometer |
| 03/28/1995 | US5401956 Diagnostic system for fiber grating sensors |
| 03/07/1995 | CA1334630C Measuring device |
| 02/28/1995 | US5394488 Optical fiber grating based sensor |
| 02/28/1995 | US5394378 Hydrophone transduction mechanism |
| 02/28/1995 | US5394377 Polarization insensitive hydrophone |
| 02/28/1995 | US5394233 Apparatus for measuring high frequency vibration, motion, or displacement |
| 02/07/1995 | US5387792 For measuring the position of a shadow producing object |
| 02/02/1995 | WO1995003531A1 Acoustic microscope |
| 01/26/1995 | DE4344650C1 Signalling device for turbomachines (fluid-flow engines, fluid-kinetic machines) |
| 01/25/1995 | EP0635120A1 System for monitoring torsional vibrations and operating parameters of rotating shafts |
| 01/25/1995 | CN1097872A System for determining form sensor beat frequency |
| 01/24/1995 | CA1334053C Self-oscillating, optical resonant sensor |
| 01/10/1995 | US5381492 Fiber optic vibration sensor |
| 01/10/1995 | US5379641 Method for measuring the deflection in the shaft of a golf club for controlling the dynamic loft angle of a club |
| 01/05/1995 | WO1995000773A1 Anti-damage protecting system for a body driven in a plane |
| 01/03/1995 | US5379270 Acoustic-optic sound velocity profiler |
| 12/13/1994 | US5373487 Distributed acoustic sensor |
| 12/07/1994 | EP0627616A2 Method of determining FOVM sensor beat frequency |
| 12/02/1994 | CA2124761A1 System for determining fovm sensor beat frequency |
| 11/29/1994 | US5369485 Fiber optic accelerometer with centrally supported flexural disk |
| 11/24/1994 | WO1994027414A1 Distributed acoustic sensor |
| 11/24/1994 | WO1994020021A3 Ultrasonic monitor |
| 11/24/1994 | CA2160360A1 Distributed acoustic sensor |
| 11/22/1994 | US5367376 Planar and linear fiber optic acoustic sensors embedded in an elastomer material |
| 11/22/1994 | US5365787 Noninvasive method and apparatus for determining resonance information for rotating machinery components and for anticipating component failure from changes therein |
| 11/09/1994 | EP0623808A2 Optoelectronic sensor device |
| 11/08/1994 | US5363342 High performance extended fiber optic hydrophone |
| 11/02/1994 | EP0622619A2 Optical signal detection apparatus and method for preventing polarization signal fading in optical fiber interferometric sensor systems |
| 11/01/1994 | CA2009033C Optical sensor displacement monitor |
| 10/27/1994 | DE4410032A1 Method and device for detecting ultrasonic wave energy |
| 10/27/1994 | DE4312692A1 Optical sensor device |
| 10/25/1994 | US5359445 Fiber optic sensor |
| 10/11/1994 | US5355208 Distributed fiber optic sensor for locating and identifying remote disturbances |
| 10/06/1994 | CA2121916A1 Optical lever acoustic and ultrasound sensor |
| 10/04/1994 | US5353262 Optical transducer and method of use |
| 09/29/1994 | DE4309599A1 Method and device for detecting an inaminate object having dynamic properties in the ground |
| 09/15/1994 | WO1994020021A2 Ultrasonic monitor |
| 09/06/1994 | US5345522 Reduced noise fiber optic towed array and method of using same |
| 08/16/1994 | US5339289 Acoustic and ultrasound sensor with optical amplification |
| 08/09/1994 | US5335548 Non-linear optical crystal vibration sensing device |
| 08/03/1994 | EP0608993A2 Rotating shaft vibration monitor |
| 08/02/1994 | US5335062 Apparatus for all-optical self-aligning holographic phase modulation and motion sensing and method sensing and method for sensing such phase modulation |
| 07/21/1994 | WO1994016296A1 Very low amplitude microvibration sensing device |
| 07/21/1994 | CA2152601A1 Very low amplitude microvibration sensing device |
| 07/12/1994 | US5327783 Method of monitoring heat exchanger vibrations |
| 06/07/1994 | US5317929 Fiber optic flexural disk accelerometer |
| 06/01/1994 | EP0599601A2 Analysis of vibrating panels |
| 05/31/1994 | US5317544 Multiple segment fiber optic hydrophone |
| 05/31/1994 | US5317383 Array retroreflector apparatus for remote seismic sensing |
| 05/25/1994 | EP0598113A1 Ultrasound sensor with projecting light-beam |
| 05/24/1994 | US5315364 Gauge for measuring strong shock waves |
| 05/17/1994 | US5313266 Demodulators for optical fiber interferometers with [3×3] outputs |
| 05/10/1994 | USRE34604 Sensor using fiber interferometer |
| 05/10/1994 | US5311485 Fiber optic hydrophone |
| 04/13/1994 | EP0354229B1 Hydrophonic probe |
| 03/29/1994 | US5297436 Optical fibre ultrasonic sensor |
| 03/22/1994 | US5297224 Optically switched sensor array |
| 03/09/1994 | EP0586288A1 Method and device for measuring the vibrations of operating turbine blades |
| 03/08/1994 | US5293040 Method and apparatus for measuring vibrations of rotating shaft |
| 03/02/1994 | EP0585013A1 Optic sensor system |
| 02/22/1994 | US5289434 Retroreflector apparatus for remote seismic sensing |
| 02/15/1994 | US5286313 Process control system using polarizing interferometer |
| 02/15/1994 | CA2103608A1 Optically switched sensor array |
| 02/08/1994 | US5285424 Wide bandwidth fiber optic hydrophone |
| 02/03/1994 | DE4224744A1 Interferometer for detecting electric field generated vibration of metallic particles in gas insulated HV switchgear - feeds laser beam into sensing and reference optical fibre branches of Mach=Zehnder interferometer, has two photodetectors at output of combiner-divider and control loop for zeroing difference between detector voltages |
| 02/01/1994 | US5283430 Optical frequency encoding for normal shock and position sensing having a broadband light source and a color gradient filter |
| 02/01/1994 | CA1326602C Wide bandwidth fiber optic accelerometer |
| 01/06/1994 | WO1994000775A1 Ultrasonic position sensor |
| 01/06/1994 | WO1994000732A1 Distributed fiber optic sensing system |
| 01/06/1994 | CA2139134A1 Distributed fiber optic sensing system |
| 01/04/1994 | CA1325842C Method and device for nondestructive evaluation |
| 12/23/1993 | WO1993025874A1 Optical lever acoustic and ultrasound sensor |
| 12/15/1993 | EP0511268A4 Ultrasonic sensor |
| 12/09/1993 | WO1993024813A1 Pressure-compensated optical acoustic sensor |
| 11/18/1993 | EP0569994A2 Vibration detection and reduction system and vibration sensors for use in micro-gravity environment |
| 11/02/1993 | US5257545 Method and apparatus to monitor check valves |
| 10/28/1993 | WO1993021502A1 System and method for monitoring torsional vibrations and operating parameters of rotating shafts |
| 10/28/1993 | DE4213638A1 Interferometric measuring system for surface roughness or deflection of object - has probe for deflecting reflector in measurement beam path and has interference-patterned aperture before photodetector which stores light source and reflector imaging and unevenness characteristics. |
| 10/19/1993 | US5253531 System and method for monitoring torsional vibrations and operating parameters of rotating shafts |
| 10/12/1993 | US5253222 Omnidirectional fiber optic hydrophone |
| 09/28/1993 | US5249163 Optical lever for acoustic and ultrasound sensor |
| 09/21/1993 | US5247490 Pressure-compensated optical acoustic sensor |