| 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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| 09/30/1981 | EP0036577A1 Ultrasonic transducer array |
| 09/22/1981 | US4290301 Knock detecting apparatus for internal combustion engine |
| 08/04/1981 | US4282484 Combination seismic/magnetic transducer with floating magnet |
| 06/30/1981 | US4275586 Oscillation sensor, particularly combustion engine knock sensor |
| 06/24/1981 | EP0030741A2 Vibrating beam force transducer |
| 04/21/1981 | US4263520 Signal detecting circuit for electronic musical instrument |
| 03/25/1981 | EP0025485A1 Device for registering measured values of test pieces |
| 03/24/1981 | US4258229 Body vibration pickup |
| 03/17/1981 | US4255965 Apparatus for detecting oscillations occurring during engine knock |
| 02/11/1981 | EP0023732A1 Capacitive gauge |
| 01/27/1981 | CA1094677A1 Acoustic emission transducer and system |
| 01/13/1981 | US4245329 Elongated seismic receiver of continuous structure |
| 01/13/1981 | US4245172 Transducer for generation and detection of shear waves |
| 11/26/1980 | EP0019511A1 Process for compensating temperature variations in surface-wave devices and pressure sensor for carrying out this process |
| 11/18/1980 | US4233836 Knocking detection system for internal combustion engine |
| 11/12/1980 | EP0018853A2 Method of and system for the detection of object impact |
| 10/14/1980 | CA1087725A1 Piezoelectric acoustic emission instrumentation |
| 07/15/1980 | US4213071 Oxygen filled, sealed housing for piezoceramic electroacoustic transducer |
| 04/15/1980 | CA1075490A1 Fuel injected engine monitoring apparatus |
| 03/11/1980 | US4192977 Highly directional ultrasonic electret transducer |
| 02/19/1980 | US4189655 Lightweight piezoelectric accelerometer |
| 11/14/1979 | EP0005372A2 Apparatus for monitoring the vibrational behaviour of structural elements in a composite structure |
| 10/31/1979 | EP0005071A2 Probe for electronic scanning type ultrasonic diagnostic apparatus |
| 10/23/1979 | US4171645 Displacement probes with self-contained exciting medium |
| 08/14/1979 | US4164149 Method and system for monitoring the angular deformation of structural elements |
| 05/22/1979 | US4156192 Inductive displacement transducer using plural magnetic screens rotatable about different axis to modify an inductance proportional to the displacement |
| 04/24/1979 | CA1053363A1 Acceleration-insensitive hydrophone |
| 04/10/1979 | US4148222 Apparatus and method for measuring torsional vibration |
| 02/20/1979 | CA1049109A1 Variable inductance transducers |
| 12/26/1978 | US4131815 Solid piezoelectric sand detection probes |
| 09/26/1978 | USRE29785 Replaceable element ultrasonic flowmeter transducer |
| 09/05/1978 | CA1037763A1 Color display of geophysical and other data |
| 08/29/1978 | CA1037286A1 Adjustable probe holder |
| 05/09/1978 | US4088907 Piezoelectric acoustic emission instrumentation |
| 03/28/1978 | US4081626 Electrostatic transducer having narrowed directional characteristic |
| 02/21/1978 | US4075671 Automatic ac biasing of a magnetoresistive element |
| 01/10/1978 | US4067225 Capacitance type non-contact displacement and vibration measuring device and method of maintaining calibration |
| 11/22/1977 | US4058888 Method of calibrating variable inductance transducers |
| 08/16/1977 | US4042899 Vacuum servo actuated variable inductance transducer |
| 08/09/1977 | US4041446 Capacitive-type displacement and pressure sensitive transducer |
| 07/19/1977 | US4036050 Engine monitoring apparatus |
| 07/05/1977 | US4034332 Ultrasonic transmitting and receiving devices using dielectric transducers |
| 06/07/1977 | US4028567 Electromagnetic vibration-detector device, in particular for anti-theft purposes |
| 05/17/1977 | US4024485 Variable inductance transducer |
| 05/17/1977 | US4024483 Variable inductance transducers |
| 04/12/1977 | US4017824 Acceleration-insensitive hydrophone |
| 02/15/1977 | US4008433 Capacitance displacement type measuring probe |
| 01/25/1977 | US4004464 Method and transducer and apparatus for selectively measuring oscillation components from an oscillation spectrum |
| 11/30/1976 | US3994155 Devise for the measurement of mechanical vibrations |
| 09/21/1976 | US3981621 Bearing wear detection devices |
| 08/17/1976 | US3975685 Magnetoelastic shear force measuring means for measuring shear stress in tubular axles |
| 07/20/1976 | US3969927 Vibration measuring and the apparatus therefor |
| 01/06/1976 | US3930405 Method and means for measuring acoustic emissions |