| Patents for G01P 3 - Measuring linear or angular speed; Measuring differences of linear or angular speeds (19,542) |
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| 03/19/1991 | US5001456 Time and distance measurement apparatus |
| 03/19/1991 | US5001363 Circuit for measuring rotary shaft off-sets |
| 03/14/1991 | DE3930093A1 Rotational speed transducer for vehicle - uses arrangement of holes around rim of device to improve signal quality |
| 03/12/1991 | US4999579 Method and apparatus for measuring the rotational speed of a shaft |
| 03/07/1991 | WO1991002984A1 Magnetic ring mounting fixture |
| 03/07/1991 | WO1991002983A1 Flux concentrator for magnetic sensors |
| 03/07/1991 | DE4001793C1 Ascertaining slip between railway wheel and drive friction roller - applying latter to bogie during machining for re-profiling |
| 03/06/1991 | EP0415906A1 Method and device for the determination of parameters of motion |
| 03/06/1991 | EP0415402A2 Improved method and apparatus for measuring velocity in servo systems |
| 03/05/1991 | US4998084 Multipolar magnetic ring |
| 02/27/1991 | CN2072226U Piezoelectric sensor for measuring rotational speed |
| 02/21/1991 | WO1991002220A1 Device for measuring lengths, angles and the like |
| 02/21/1991 | WO1991001906A1 Control or regulating system for motor vehicles |
| 02/21/1991 | WO1991001778A1 Process and device for determining the optimal training speed for throwing, shooting or passing in throwing sports or ball games |
| 02/21/1991 | DE3943469A1 Non-marking RPM measurement at smooth shafts - determining angular deviation alpha of reflector of external resonator of laser-sensor compared to vertical of optical axis |
| 02/21/1991 | DE3927007A1 Movements sensor for toothed disc - has flux conducting bod surrounded coil and with ends projecting at both sides on which magnets are arranged |
| 02/19/1991 | US4994731 Vehicle engine |
| 02/19/1991 | US4994723 Digital servo system for controlling rotational speed of rotary body |
| 02/14/1991 | DE3926328A1 Vorrichtung zum messen von laengen, winkeln und dergleichen Apparatus for measuring lengths, angles, and the like |
| 02/13/1991 | EP0412618A2 Adaptive rotational speed measuring apparatus |
| 02/13/1991 | EP0412200A1 Rotation detecting device |
| 02/13/1991 | EP0412181A1 Device for establishing the angular position of a rotating body |
| 02/12/1991 | US4992733 For producing electrical pulse signals |
| 02/12/1991 | US4992731 Rotary speed sensor with base line compensation of Hall cell output signal |
| 02/12/1991 | US4992730 Method of computing the rotating speed of a rotating body based upon pulse train signals from a rotating speed sensor |
| 02/12/1991 | US4992656 for measuring the spatial gradient |
| 02/12/1991 | CA1280191C Method of estimating vehicle speed |
| 02/11/1991 | WO1991002444A1 Atomic interferometry gyroscopes, accelerometers, and gravity gradiometers |
| 02/07/1991 | DE4021105A1 Measuring position of movable body - using two sinusoidal signals with phase difference of 90 deg. derived from measuring elements |
| 02/07/1991 | DE3925831A1 Kraftfahrzeugsteuer- oder regelungssystem Kraftfahrzeugsteuer- or control system |
| 02/06/1991 | EP0411959A1 Method for detecting changes in spin rate of a missile in flight |
| 02/06/1991 | CN1011552B Crossed coil moving-magnet meter |
| 02/05/1991 | US4991100 Method for computing a value of speed from a pulse signal |
| 02/05/1991 | US4990791 Multi-dimensional laser Doppler velocimeter |
| 02/05/1991 | US4989574 Electromagnetic pickup |
| 01/30/1991 | EP0410127A1 Electrical machine as D.C. tachometer generator |
| 01/30/1991 | EP0410047A1 Improvements to brushless tachogenerators with position sensor for brushless motors |
| 01/29/1991 | US4989165 Apparatus for calculating vehicle-wheel revolution values |
| 01/29/1991 | US4988994 Traffic monitoring device |
| 01/29/1991 | US4988220 Use in a vehicle bearing having a fixed bearing race and a Rotating race |
| 01/29/1991 | US4988219 Roller bearing assembly with sensor device |
| 01/29/1991 | US4988191 Electro-optical method and system for determining the direction of motion in double-exposure velocimetry by shifting an optical image field |
| 01/24/1991 | WO1991001008A1 Angular rate sentor |
| 01/23/1991 | EP0409326A2 Rotary speed sensor |
| 01/23/1991 | EP0409318A2 Method of determining thread speed |
| 01/23/1991 | EP0408877A2 Method of determination of rotational speed of an internal combustion engine |
| 01/23/1991 | EP0408566A1 Process and circuit for a brake system with anti-lock and/or traction slip control. |
| 01/23/1991 | EP0342201B1 Electronic sensing apparatus for measuring projectile parameters |
| 01/22/1991 | US4987299 Rotation quantity measuring method and system |
| 01/22/1991 | US4987040 Magnetic rotary encoders and magnetic linear scales |
| 01/22/1991 | US4986605 Assembly of a vehicle non-driving wheel hub equipped with a pulser and sensor device for measuring the speed of rotation of the wheel |
| 01/22/1991 | US4986410 Machine control apparatus using wire capacitance sensor |
| 01/17/1991 | DE3920384A1 Detecting excessive stresses in vehicle tyres - detecting and recording speeds and decelerations greater than permitted values |
| 01/16/1991 | EP0408084A1 Rotation detector |
| 01/16/1991 | EP0407607A1 Optical encoder |
| 01/16/1991 | EP0192719B1 Method and apparatus for determining at least one characteristic value of movement of a body |
| 01/16/1991 | EP0188576B1 Orbital shaker |
| 01/16/1991 | EP0154654B1 Device for detecting position of rotor of motor |
| 01/15/1991 | US4985859 Method for identifying and interrogating the measured value of the velocity or speed of an object |
| 01/09/1991 | EP0346335B1 Measurement detector |
| 01/09/1991 | CN1048454A Eddy current meter |
| 01/09/1991 | CN1048453A Eddy current meter |
| 01/08/1991 | US4983916 Compact magnetic encoder |
| 01/03/1991 | DE4018834A1 Arrangement for distinguishing between opposite movement directions - has inductive sensor of periodic magnetic asymmetries with pole shoes at varying separations |
| 01/03/1991 | DE3921410A1 Arrangement for rapidly measuring states of motion - contains signal generator, raster element encoder and receiver generating triangular wave signals |
| 01/03/1991 | DE3920910A1 Eddy current measurer suitable as tachometer - has bell-shaped turbulence stream body and magnet directly combined |
| 01/03/1991 | DE3920385A1 Monitoring vehicle operating parameter, e.g. distance covered - deriving values indirectly in case direct sensor is disables, e.g. in hire car |
| 01/02/1991 | EP0405048A1 Seal |
| 01/02/1991 | EP0192648B1 A method of monitoring the operation of a cyclically moving, power generating or power transmitting element and an apparatus for monitoring the operation of such an element |
| 01/02/1991 | CN2068670U Locomotive speed/odometer |
| 01/02/1991 | CA1278563C Control method and apparatus |
| 01/01/1991 | US4982348 Method for determining vehicle speed during acceleration of a four-wheel drive vehicle |
| 01/01/1991 | US4982330 Arrangement for detecting input signals of a control device in an internal combustion engine |
| 12/27/1990 | WO1990015968A1 Process for generating a voltage proportional to a rotation speed with a resolver and circuit for implementing the process |
| 12/27/1990 | EP0404701A1 Hall effect rotation sensor |
| 12/27/1990 | EP0404642A1 Repeater apparatus for rotational movement |
| 12/27/1990 | EP0403842A2 Spindle position/speed control unit |
| 12/27/1990 | EP0403658A1 Method of controlling the speed of a servomotor |
| 12/19/1990 | EP0403055A2 Highly efficient method for calculating rotational speed |
| 12/19/1990 | EP0402620A2 Wireless transmitting-receiving apparatus for a bicycle |
| 12/18/1990 | US4978847 Pulse generator and disk sector boundary signal generator with wow and flutter compensation |
| 12/18/1990 | US4978234 Bearing unit having sensor |
| 12/18/1990 | US4978187 Optical element, optical disc and rotary encoder with the optical element |
| 12/18/1990 | CA1278072C Orbital shaker |
| 12/13/1990 | WO1990015337A1 Method of calibrating vehicle speed signals |
| 12/13/1990 | WO1990015245A1 Device for controlling an internal combustion engine |
| 12/13/1990 | DE3919109A1 Rod sensor for revolution rate measurement e.g. for vehicle wheels - has axial spring element formed from friction bush which allows axial rod motion in pole wheel direction |
| 12/13/1990 | DE3918409A1 Vorrichtung zum steuern einer brennkraftmaschine An apparatus for controlling an internal combustion engine |
| 12/12/1990 | EP0402345A2 Speed and direction monitor for motor vehicles |
| 12/12/1990 | EP0401757A2 Method of detecting the number of revolutions |
| 12/12/1990 | EP0401597A2 Control arrangements for cutting a web according to the length |
| 12/12/1990 | EP0401464A2 Bearing apparatus for a driven shaft of an automobile |
| 12/11/1990 | US4977525 Highly efficient method and apparatus for calculating rotational speed |
| 12/11/1990 | US4977372 Tachometer device having limiting means for limiting frequency variations |
| 12/06/1990 | DE3918171A1 Bite indicator for fishing rod - has rotation rate sensor for plate over which line is passed, also indicates pulled out line length |
| 12/06/1990 | DE3918152A1 Eddy current measurement mechanism for vehicle engine speed - has body moved by eddy current induction, plastic magnetic body holder with optical zones forming light barrier |
| 12/06/1990 | DE3918151A1 Eddy current revolution counter serving as tachometer - has bores in bell-shaped eddy current piece accepting wheel dresser |
| 12/06/1990 | DE3918150A1 Eddy current revolution counter serving as tachometer - has at least one drive element of drive chain between magnetic shaft and distance counter exchangeably mounted |
| 12/06/1990 | DE3917976A1 Ascertaining speed of rear drive motor vehicle - detecting angular speeds of both front wheels and at least average speed of both rear wheels |
| 12/05/1990 | EP0400241A1 Hollow shaft type resolver |