| 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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| 04/18/1984 | EP0105569A2 Structural information detector |
| 04/10/1984 | US4442350 Fiber optic sensor with enhanced immunity to random environmental perturbations |
| 04/04/1984 | EP0104943A2 Stabilized fiber optic sensor |
| 04/04/1984 | EP0104592A2 Device and method for the demonstration of surface waves |
| 04/04/1984 | EP0104322A1 A dual differential interferometer |
| 04/03/1984 | CA1164950A1 Frequency modulated laser diode |
| 03/21/1984 | EP0103422A1 Measurement of oscillatory and vibrational motion |
| 03/14/1984 | EP0102677A2 Optical transducer means |
| 03/14/1984 | EP0007312B1 Optical sensing apparatus |
| 03/13/1984 | US4436425 Signal waveform detector using synthetic FM demodulation |
| 03/13/1984 | US4436422 Sensor which is sensitive to pressure, tension, torsion and heat and a process of operation |
| 03/07/1984 | EP0102069A2 Vibration analyzing device |
| 02/22/1984 | EP0101189A2 Non-destructive testing system employing a liquid crystal detector cell |
| 02/15/1984 | EP0100357A1 Methods and means for utilizing apodized beams. |
| 01/17/1984 | US4425788 Combustion monitoring system for multi-cylinder internal combustion engine |
| 12/20/1983 | US4422167 Wide-area acousto-optic hydrophone |
| 12/20/1983 | US4421384 Fiber optic transducer |
| 12/20/1983 | CA1159128A1 Motion sensing apparatus with variable threshhold |
| 12/13/1983 | US4420260 Interferometer transmitting the useful phase information through optical fibres |
| 12/06/1983 | US4418981 Quadrature fiber-optic interferometer matrix |
| 11/08/1983 | US4414471 Fiber optic acoustic signal transducer using reflector |
| 11/08/1983 | US4413519 Turbine blade vibration detection apparatus |
| 10/27/1983 | WO1983003685A1 Sensor using fiber optic interferometer |
| 10/27/1983 | WO1983003684A1 Improved fiber optic sensor for detecting very small displacements of a surface |
| 10/26/1983 | EP0092367A2 Sensor using fiber interferometer |
| 10/19/1983 | EP0091826A2 Improved fiber optic sensor for detecting very small displacements of a surface |
| 10/18/1983 | US4409842 Structural information detector |
| 10/11/1983 | US4408881 Holographic inspection technique |
| 10/11/1983 | US4408495 Fiber optic system for measuring mechanical motion or vibration of a body |
| 10/05/1983 | EP0090167A2 Fiber-optic sensor for a resonant element |
| 09/28/1983 | EP0089841A1 Method and apparatus for measuring the intensity of an acoustic field |
| 09/20/1983 | US4405198 Extended fiber optic sensor using birefringent fibers |
| 09/20/1983 | US4404841 Optical combustion sensor system |
| 08/09/1983 | CA1151760A1 Optical transducer array system |
| 08/04/1983 | WO1983002667A1 Methods and means for utilizing apodized beams |
| 07/21/1983 | WO1983002496A1 Quadrature fiber-optic interferometer matrix |
| 07/20/1983 | EP0083979A2 Interferometric contact-free method for testing workpieces using ultrasonic wave vibrations |
| 07/19/1983 | US4393712 Portable liquid crystal testing device |
| 07/19/1983 | US4393687 Sensor arrangement |
| 07/12/1983 | CA1149777A1 Electrolytic electrode with coating of oxides of tin and bismuth |
| 06/29/1983 | EP0082615A1 Opto-mechanical ripple transducer with adjustable sensitivity |
| 06/29/1983 | EP0082604A1 Fibre optic hydrophone transducers |
| 06/29/1983 | EP0082525A2 Offshore platform structural assessment system |
| 06/29/1983 | EP0082524A2 Geophysical exploration system |
| 06/22/1983 | EP0081860A2 Perimeter security system |
| 06/21/1983 | US4388832 Method and apparatus for receiving ultrasonic waves by optical means |
| 06/14/1983 | US4387785 Optical device for monitoring critical speeds of a rotating member |
| 05/24/1983 | USRE31248 Electro-mechanical transducer |
| 05/03/1983 | US4381676 Apparatus for sensing ultrasonic waves by optical means |
| 04/19/1983 | US4380394 Fiber optic interferometer |
| 04/12/1983 | US4379633 Apparatus for maintaining adjustment of coincidence and relative phase relationship of light beams in an interferometer |
| 04/12/1983 | US4379408 Liquid crystal technique for examining internal structures |
| 03/23/1983 | EP0074697A2 Machine monitoring system |
| 03/22/1983 | US4377086 Sensor system |
| 03/01/1983 | US4375680 Optical acoustic sensor |
| 02/16/1983 | EP0014705B1 Measurement of small movements |
| 02/15/1983 | US4373781 Acoustic to optical pulse code modulating transducer |
| 01/25/1983 | US4369748 Optical engine knock sensing system |
| 01/20/1983 | WO1983000218A1 Motion responsive sensor and switch |
| 12/22/1982 | EP0067531A2 System for assessing the effect of forces acting on a structure, and detectors and optical sensors for use in such systems |
| 12/15/1982 | EP0066923A2 Aircraft structural integrity assessment system |
| 12/14/1982 | US4363533 Concentric fiber optical transducer |
| 12/09/1982 | WO1982004310A1 Fiber optic interferometer |
| 12/08/1982 | EP0066493A1 Pressure wave fiber optic transducer cable |
| 12/07/1982 | US4363114 Low noise remote optical fiber sound detector |
| 11/23/1982 | US4360272 Fiber optic energy sensor and optical demodulation system and methods of making same |
| 11/23/1982 | US4360247 Evanescent fiber optic pressure sensor apparatus |
| 11/17/1982 | EP0064789A2 Interferometer transmitting the useful phase information through optical fibres |
| 11/16/1982 | US4358952 Optical engine knock sensor |
| 10/19/1982 | US4354735 Optical transducer |
| 10/12/1982 | US4353244 Method of determining the azimuth and length of a deep vertical fracture in the earth |
| 10/12/1982 | CA1133275A1 Electro-mechanical transducers |
| 09/29/1982 | EP0061360A1 Optical device for maintaining a radiation pulse circulating in a monomode waveguide; gyrometer and hydrophone using such a device |
| 08/24/1982 | US4345482 Fiber optical devices for measuring physical phenomenon |
| 08/24/1982 | US4345475 Method and apparatus for receiving ultrasonic energy by optical means |
| 07/20/1982 | US4339954 Measurement of small movements |
| 07/13/1982 | US4339661 Fibre optic transducer |
| 07/13/1982 | US4338821 Liquid crystal cell for acoustical imaging |
| 06/22/1982 | US4335642 Stroboscopic tuning |
| 06/15/1982 | US4334777 Method of monitoring motion |
| 06/02/1982 | EP0053052A1 Interferometric device for the real-time visualization of deformations of vibrating structures |
| 05/25/1982 | CA1124384A1 Stable fiber-optic hydrophone |
| 05/04/1982 | CA1122814A1 Method of determining change in subsurface structure due to application of fluid pressure to the earth |
| 04/20/1982 | US4325259 Vibration amplitude measuring device |
| 03/30/1982 | US4322829 Fiber optic accelerometer and method of measuring inertial force |
| 03/23/1982 | US4321464 Device for measuring vibration phase and amplitude |
| 03/23/1982 | US4321463 Low frequency laser fiberoptic detector apparatus for musical instruments and intrusion detection |
| 03/16/1982 | US4320475 Monomodal optical fibre hydrophone operating by the elastooptical effect |
| 03/09/1982 | US4319186 Signal sensors |
| 02/02/1982 | CA1117312A1 Fiber optical measurement apparatus |
| 02/02/1982 | CA1117311A1 Stabilized fiber optical measuring apparatus |
| 01/26/1982 | US4313192 Optical transducer array system |
| 01/26/1982 | US4313185 Acoustic vibration sensor and sensing system |
| 01/26/1982 | CA1116884A1 Optical sensing apparatus and method |
| 01/19/1982 | US4311391 Passive fiber optic sonar system |
| 12/04/1981 | EP0007312A4 Optical sensing apparatus. |
| 11/17/1981 | US4300813 Fiber optic transducer and method of manufacture therefor |
| 11/17/1981 | CA1112750A1 Liquid crystal acousto-optic cell |
| 11/03/1981 | US4297887 High-sensitivity, low-noise, remote optical fiber |
| 10/20/1981 | US4295473 Apparatus and method for analysis of motion of a dynamic structure |