| Patents for G01P 3 - Measuring linear or angular speed; Measuring differences of linear or angular speeds (19,542) |
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| 08/14/1990 | US4948277 Rotating seal with integrated magnetic encoder for a bearing with information sensors |
| 08/14/1990 | US4948247 High speed stroboscope system for visually observing dynamic properties by moving objects of various characteristics |
| 08/09/1990 | WO1990008942A1 Optical encoder |
| 08/07/1990 | US4947329 Method of determining the acceleration of a turbine in an automatic transmission |
| 08/07/1990 | US4947116 Inductive speed sensor employing phase shift |
| 08/07/1990 | US4946296 Device for sealing and generating electrical pulses |
| 08/07/1990 | US4946295 Bearing with information sensor |
| 08/07/1990 | US4946242 Optical part including integral combination of optical fiber and light emitting or receiving element and method of manufacturing the same |
| 08/02/1990 | DE4001273A1 Small motor for tape recorder - has frequency generator with cylindrical section in contact with circumferential surface of housing to detect RPM |
| 08/01/1990 | EP0379816A1 Control for crossed-coil instruments |
| 08/01/1990 | CN1044336A System for sensing position of rotating steel shaft including track formed by strip having discontinuous electrical properties, and method of mfg. such track |
| 07/31/1990 | US4945441 Zero-cross point detecting circuit |
| 07/31/1990 | US4945274 Angular pulse generator with flux return |
| 07/25/1990 | EP0378939A1 Rotory seal with integrated magnetic coder, especially for rolling bearings with sensors |
| 07/25/1990 | EP0378885A1 Dynamic test system for sewing threads |
| 07/25/1990 | CN2059743U Electronic induction revolution meter |
| 07/25/1990 | CN2059742U Multifunction revolution counter |
| 07/24/1990 | US4942761 Sensing arrangement for measuring the rotational speed of a rotatable shaft having a crank |
| 07/24/1990 | CA1271992A1 Magnetic ring for detecting the rotation of an object |
| 07/18/1990 | EP0377835A2 Device for detecting the rotor position and rotation speed of an electric motor |
| 07/12/1990 | WO1990007717A2 Process and device for measuring the speed and tension of a thread being continuously unwound |
| 07/11/1990 | EP0377481A2 Apparatus for controlling rotational speed by optical data collection |
| 07/11/1990 | EP0377235A1 Method and apparatus for determining a characteristic of the movement of a drill string |
| 07/11/1990 | CN2059245U Electronic revolution counter for motor vehicle |
| 07/11/1990 | CN1008774B Method and apparatus for headbox jet velocity measurement |
| 07/11/1990 | CN1008763B Bearing with magnetic field detector |
| 07/10/1990 | US4940937 Pulse generating ring for electromagnetic rotary position detection |
| 07/10/1990 | US4940936 Antifriction bearing with a clip-on sensor cooperating with a shaft mounted magnetic encoder retainer ring |
| 07/05/1990 | DE3903579A1 Device for detecting changes in rotational speed |
| 07/05/1990 | DE3844294A1 Device for contactless detection of the rotational speed of an object |
| 07/05/1990 | DE3842937A1 Interferometer for measuring angular velocities in three-dimensional space |
| 07/04/1990 | EP0376771A1 Bearing with an information sensor |
| 07/04/1990 | EP0376604A2 Speed sensor with magnetic field switching for actuating a magneto-optic switch means |
| 07/04/1990 | CN2058993U Multi-function digital revolution counter |
| 07/03/1990 | US4939675 Digital system for controlling mechanical instrument gauges |
| 07/03/1990 | US4939659 Speed/rpm transmitting device |
| 07/03/1990 | US4939455 Sensor having two-wire connection to load |
| 07/03/1990 | US4938612 Bearing assembly with wheel revolution detector |
| 06/28/1990 | WO1990007123A1 A method of optically determining the speed of a surface |
| 06/28/1990 | DE3843501A1 Device for measuring distance and speed |
| 06/27/1990 | EP0375019A1 Device for detecting the movement of a part |
| 06/27/1990 | EP0374797A1 Digital servo system for controlling rotational speed of rotary body |
| 06/27/1990 | EP0374696A2 Inductive sensing device |
| 06/26/1990 | US4937522 Speed sensor pickup assembly with slotted magnet |
| 06/26/1990 | US4936142 Rapidly responding vertical speed indicator for use in aircraft |
| 06/19/1990 | US4935697 Method and apparatus for detecting a projectiles flight path by sending a magnetic field produced by movement of frictionally imparted electrical change on the projectile |
| 06/19/1990 | US4935652 Optical pulse generator for an electric-motor drive arrangement |
| 06/19/1990 | US4934501 Power transmission with a clutch unit having shaft speed measuring means |
| 06/19/1990 | CA1270564A1 Method and apparatus for optical nutation sensing |
| 06/14/1990 | WO1990006622A1 Method of controlling the speed of a servomotor |
| 06/14/1990 | WO1990006517A1 Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft |
| 06/14/1990 | WO1990006504A1 Optoelectronic sensing device |
| 06/13/1990 | EP0373146A2 Method and device for measuring the revolutions of an electronically controlled combustion engine |
| 06/13/1990 | EP0373131A2 Pulse generator including a pattern provided on a rotor of a motor |
| 06/13/1990 | DE3841654A1 Speed sensor for installation in a wheel bearing |
| 06/12/1990 | US4933655 Mounting structure of a reed switch for an eddy-current indicator |
| 06/12/1990 | US4933636 Self-aligning tachometer and method of manufacturing same |
| 06/12/1990 | US4932725 Mounting device for a wheel cap or a magnet wheel for sensing anti-skid systems on the wheel hub of a vehicle wheel |
| 06/12/1990 | US4932245 Magnetic ring mounting fixture |
| 06/09/1990 | CA2003708A1 Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft |
| 06/06/1990 | EP0371836A1 Roller bearing with an information sensor |
| 06/05/1990 | US4931966 Method of measuring vehicle speed |
| 06/05/1990 | US4931727 Moving body speed detecting device which produces and detects a magnetic pole on the body surface |
| 06/05/1990 | CA1270046A1 Digital rotation detecting apparatus |
| 06/03/1990 | CA2003785A1 Method and apparatus for determining a characteristic of the movement of a drill string |
| 05/31/1990 | DE3910214C1 Automatic stroke monitoring during a ramming operation |
| 05/31/1990 | DE3839923A1 Sensor |
| 05/31/1990 | DE3839557A1 Electrical plug connection for sensors (pick-ups) on bearings |
| 05/30/1990 | EP0370963A1 Circuit for an electromagnetic rotation sensor |
| 05/30/1990 | EP0370839A1 Device for measuring angular position and linear displacement |
| 05/29/1990 | US4928523 Method and apparatus for identifying ballistic characteristics within a weapon barrel |
| 05/23/1990 | EP0369593A2 Processing circuit for variable reluctance transducer |
| 05/23/1990 | EP0369331A2 Speed detector for a vibration wave driven motor |
| 05/23/1990 | EP0369119A2 Method for the production of digital rotational rate and angle information using a resolver |
| 05/22/1990 | US4928242 Vehicle speed sensor abnormality detection device |
| 05/22/1990 | US4928176 Electronic camera-processing circuit for automatically tracking particles which move across an optical image |
| 05/22/1990 | US4928060 Driving circuit of a crossed-coil type instrument using digital data pulse production |
| 05/22/1990 | US4927261 Method and apparatus for photographing a movement |
| 05/22/1990 | US4927232 Structural monitoring system using fiber optics |
| 05/16/1990 | EP0367865A1 Method for the determination of the measured value of speed or rate of rotation of an object |
| 05/09/1990 | CN1042011A Method and circuit structure of depending on function autosyn' generating digital rotation number and angle information |
| 05/08/1990 | US4924166 Circuit for shaping and making use of armature current ripple as generated by a D.C. motor, in particular for position control |
| 05/08/1990 | US4924161 Position and speed detecting device |
| 05/08/1990 | US4923298 Device for measuring the speed of moving light-scattering objects |
| 05/02/1990 | EP0365959A2 Method and system for approximating rotational speed |
| 05/01/1990 | US4922197 High resolution proximity detector employing magnetoresistive sensor disposed within a pressure resistant enclosure |
| 05/01/1990 | US4921345 Spatial filter type speed measuring apparatus |
| 04/24/1990 | US4919536 System for measuring velocity field of fluid flow utilizing a laser-doppler spectral image converter |
| 04/19/1990 | DE3834994A1 Device for detecting the rotational speed of a shaft |
| 04/18/1990 | EP0364134A1 Speed and direction sensing apparatus for a vehicle |
| 04/18/1990 | EP0363512A1 Non-contacting arrangement for the speed detection of a toothed wheel |
| 04/18/1990 | CN1041455A Magnetic pick-up circuit for integrated drive generators |
| 04/17/1990 | US4918629 Engine trim tachometer unit and calibration method |
| 04/17/1990 | US4918522 Method of taking pictures of a quick-moving object by means of video method |
| 04/17/1990 | US4916953 Device for measuring the movement of a motor vehicle |
| 04/12/1990 | DE3834591A1 Tachometer |
| 04/12/1990 | DE3834017A1 Method and device for rotational speed measurement |
| 04/11/1990 | EP0363001A2 Two-wire sensor |
| 04/11/1990 | EP0362527A2 Speed sensor pickup assembly with anti-cross talk means |
| 04/11/1990 | EP0362521A2 Method for and arrangement of an electronically controlled multiple thread feeding device for textile machines |