| Patents for G01H 11 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties (3,253) |
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| 02/09/1988 | US4723447 Inertia-sensitive device |
| 02/02/1988 | CA1232352A1 Capacitive sensing employing thin film inductors |
| 01/20/1988 | CN87103307A Resonant piezo-ceramic sensor termitarium probe |
| 01/12/1988 | US4719409 Digital signal output capacitance sensor displacement gauging system |
| 01/12/1988 | CA1231255A1 Coil system for inductive measurement of the velocity of movement of a magnetized body |
| 01/07/1988 | EP0251901A1 Continuous piezoelectric pressure wave receiver and method for its manufacture |
| 12/29/1987 | US4715098 Method of making coaxial cable |
| 12/26/1987 | CN87206199U Discriminator for measuring maturity of watermelons |
| 11/17/1987 | CA1229406A1 Self-orienting directionally sensitive geophone |
| 11/10/1987 | US4704894 Resonating knock sensor |
| 11/03/1987 | US4704556 Transducers |
| 11/03/1987 | US4703656 Temperature independent ultrasound transducer device |
| 10/20/1987 | US4701658 Broadband acoustic point-contact transducer |
| 10/20/1987 | CA1228415A1 Resonant frequency modification of piezoelectric transducers |
| 09/24/1987 | DE3609822A1 Electronic stethoscope for safety vibration analyses |
| 09/09/1987 | EP0235801A2 Fiber fabry-perot etalon |
| 09/08/1987 | US4692653 Acoustic transducers utilizing ZnO thin film |
| 09/08/1987 | US4692614 Rotational motion fluid loop sensor using magnetically levitated detecting element |
| 09/08/1987 | CA1226621A1 Remote calibration for acoustic transducer array |
| 08/19/1987 | EP0233057A2 Vibration sensor |
| 08/18/1987 | US4686861 Gasket type pressure sensor |
| 08/12/1987 | EP0231596A2 Electrostatic type atmospheric ultrasonic transducer |
| 08/04/1987 | US4684888 Apparatus subject to random accelerative motion for sensing motion of a magnetically susceptible part |
| 07/15/1987 | EP0228832A1 Support member for pressure sensor |
| 07/14/1987 | US4680498 Input circuit in ultrasonic apparatus |
| 06/25/1987 | DE3545353A1 Method and device for measuring the acoustic power of a focused ultrasonic field |
| 06/18/1987 | WO1987003699A1 Support member for pressure sensor |
| 06/16/1987 | US4672849 Semiconductor vibration detecting structure |
| 06/16/1987 | US4672839 Vibration sensor |
| 06/16/1987 | EP0225798A2 Acoustic transducer |
| 05/05/1987 | US4663747 Variflux vibration transducer |
| 04/21/1987 | US4658658 Coil system for inductive measurement of the velocity of movement of a magnetized body |
| 04/21/1987 | US4658650 Vibration and acoustic wave detecting device employing a piezoelectric element |
| 04/15/1987 | CN85107388A Sonic system for monitoring the trajectory of a projectile |
| 03/25/1987 | CN85106632A Microcomputerized spot dynamic balance instrument |
| 03/10/1987 | CA1219053A1 Acoustic well logging device for detecting compressional and shear waves |
| 03/05/1987 | DE3530574A1 Acoustic measurement device for investigating the permeability and cracked nature of rocks in mountains which have been bored into, and for determining the speed of compression waves, shear waves and ducted waves and their damping |
| 03/03/1987 | US4648087 Capacitive sensing employing thin film inductors |
| 03/03/1987 | US4648078 Remote calibration of acoustic transducer array |
| 02/17/1987 | US4644215 Piezoelectric vibration measurement head |
| 02/17/1987 | US4644214 Probe for electronic scanning type ultrasonic diagnostic apparatus |
| 02/04/1987 | EP0210715A2 Inertia-Sensitive Device |
| 01/28/1987 | CN86201647U Monitor for absolute and relative vibration |
| 01/20/1987 | US4638206 Sheet-like piezoelectric element |
| 12/30/1986 | EP0206458A2 Vibration-sensitive transducer |
| 12/16/1986 | US4629925 Piezoelectric coaxial cable |
| 12/09/1986 | US4628223 Composite ceramic/polymer piezoelectric material |
| 11/12/1986 | EP0201249A1 Rotational motion fluid loop sensor |
| 11/06/1986 | WO1986006475A1 Wave motion detector, a method thereof and an article retrieval system |
| 11/04/1986 | US4620446 Acceleration responsive transducers |
| 10/21/1986 | US4618949 Self-orienting directionally sensitive geophone |
| 10/08/1986 | CN85102277A Carbon fibers section area and young's modulus detector |
| 09/03/1986 | EP0193048A2 Ultrasonic transducer |
| 08/27/1986 | CN85100712A Wide band hydrophone with complex ceramic material and its manufacturing technology |
| 08/06/1986 | CN85100709A Surface acoustic wave (s.a.w.)-acoustic grating type radio frequency spectrum analyzer |
| 07/29/1986 | US4602512 Electro-dynamic transducer |
| 07/17/1986 | WO1986004137A1 Acceleration responsive transducers |
| 06/24/1986 | US4597070 Geophone |
| 06/24/1986 | US4597068 Acoustic ranging system |
| 06/24/1986 | US4596903 Pickup device for picking up vibration transmitted through bones |
| 06/18/1986 | EP0184666A2 Knocking sensor |
| 06/11/1986 | EP0184401A2 Variflux vibration transducer |
| 05/07/1986 | EP0179983A1 Shock wave sensor |
| 04/15/1986 | US4583207 Magnetohydrodynamic geophone |
| 04/09/1986 | EP0177383A1 Broadband omnidirectional elastic wave transducer and method of manufacturing it |
| 04/08/1986 | US4581677 Layered capacitive sensor for detecting loads and load variations thereon |
| 04/01/1986 | US4579000 Apparatus for detecting ultrasonic vibration |
| 03/25/1986 | US4578611 Piezoelectric stress wave transducer with boron nitride piezo support |
| 03/18/1986 | CA1202113A1 Electrostatic transducer having a fixed electrode provided with depressions and through openings |
| 03/11/1986 | US4574616 Vibration detecting apparatus |
| 02/18/1986 | US4571661 Semiconductor vibration detection device with lever structure |
| 01/28/1986 | US4566334 Ultrasonic detector device |
| 01/15/1986 | EP0167805A2 Capacitive sensing employing thin film inductors |
| 01/15/1986 | EP0167740A2 Ultrasonic transducer with a multiple-folded piezoelectric polymer film |
| 01/15/1986 | CN85200259U Pocket digital vibration measurer |
| 01/07/1986 | US4562740 Vibration sensor and the method of and apparatus for manufacture thereof |
| 12/27/1985 | EP0165886A2 Sheet-like piezoelectric element |
| 11/27/1985 | EP0162798A2 Vibration sensor and the method of and apparatus for manufacture thereof |
| 11/10/1985 | CN85200406U Transducer for measuring elasticity coupling with a suspended filament |
| 11/10/1985 | CN85200264U Multilayer piezoelectric hydrophone |
| 10/22/1985 | US4549107 Ultrasonic beam focusing device with a concave surface |
| 10/16/1985 | EP0158352A2 Electrodynamic probe |
| 10/08/1985 | CA1194709A1 Device for contact-free unbalance detection |
| 09/11/1985 | EP0154256A2 Ultrasonic transducer for use in a corrosive/abrasive environment |
| 09/10/1985 | US4541081 Electroacoustic transducer |
| 08/27/1985 | US4537076 Apparatus for and method of random vibration control |
| 07/30/1985 | US4532620 Coil assembly having stacked spiral pattern layers and method of making |
| 06/26/1985 | EP0146273A2 Piezoelectric coaxial cable |
| 06/26/1985 | EP0146272A2 Coaxial cable |
| 06/18/1985 | US4524355 Abnormal vibration monitor |
| 06/12/1985 | EP0144234A2 Improvements relating to transducers |
| 05/29/1985 | EP0142676A1 Coil system for the inductive scanning of the velocity of a magnetized object |
| 05/15/1985 | EP0141621A2 Vibratory rotational sensor |
| 05/07/1985 | US4516228 Acoustic well logging device for detecting compressional and shear waves |
| 04/30/1985 | CA1186389A1 Tuned vibration detector |
| 04/24/1985 | EP0138506A2 Remote calibration of acoustic transducer array |
| 04/24/1985 | EP0138379A2 Ultrasonic apparatus, system and method |
| 04/24/1985 | EP0138023A2 Semiconductor vibration detection device with lever structure |
| 04/23/1985 | CA1186047A1 Electret transducer with variable electret foil thickness |
| 04/23/1985 | CA1186046A1 Electret transducer with variable effective air gap |