| Patents for G01P 3 - Measuring linear or angular speed; Measuring differences of linear or angular speeds (19,542) |
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| 08/11/1981 | US4283665 Method and apparatus for eliminating ripple component from motor control loop |
| 08/11/1981 | US4283138 Low-flying object velocity-position tracing system |
| 08/11/1981 | CA1106936A1 Wheel speed sensor |
| 08/04/1981 | US4282553 Method for generating digital actual velocity signals |
| 08/04/1981 | CA1106469A1 Antilock sensor assembly |
| 07/29/1981 | EP0032762A2 Cylindrical capacitive tachometer generator |
| 07/29/1981 | EP0032692A1 Method and device for digital frequency selection |
| 07/28/1981 | US4281388 Tachometer |
| 07/28/1981 | US4281325 Positive feedback meter pulse initiator |
| 07/21/1981 | US4279576 Rotating speed detecting device of a turbocharger |
| 07/14/1981 | US4278881 System to supervise operation of a bearing |
| 07/08/1981 | EP0031703A1 Digital indication type speedometer |
| 07/08/1981 | EP0031702A1 Digital indication type speedometer |
| 07/07/1981 | CA1104724A1 Digital frequency measuring circuitry |
| 07/07/1981 | CA1104375A1 Transmission speedometer drive assembly |
| 06/30/1981 | US4276489 Multiple coil electromagnetic pickup |
| 06/16/1981 | US4274142 Apparatus for detecting revolutions of an internal combustion engine |
| 06/16/1981 | US4273430 Photographic camera |
| 06/10/1981 | EP0029846A1 Digital velocity servo. |
| 06/09/1981 | US4272688 Strip break detector system |
| 06/09/1981 | US4272194 Rotation sensitive ring laser system |
| 06/09/1981 | US4272189 Electro-optical projectile analyzer |
| 06/03/1981 | EP0029682A1 Transducer |
| 05/28/1981 | WO1981001461A1 Multiple sensing device and sensing devices therefor |
| 05/26/1981 | US4270176 Digital wheel speed sensor |
| 05/26/1981 | US4270086 Electromagnetic plunger drop timer |
| 05/19/1981 | US4268792 Method of and apparatus for multiplying pulses |
| 05/19/1981 | US4268771 Magnetic probe |
| 05/19/1981 | US4267914 Anti-kickback power tool control |
| 05/19/1981 | US4267810 Control system for control of repetitive events, e.g. ignition, fuel injection, in internal combustion engines |
| 05/12/1981 | US4267575 Wheel speed signal-producing system for skid control |
| 05/12/1981 | US4267470 Rotational angle detecting apparatus |
| 05/12/1981 | CA1101081A1 Sample and hold frequency to voltage converter circuit |
| 05/06/1981 | EP0027947A1 Device for detecting the direction and speed of rotation of a rotating element |
| 05/05/1981 | US4266192 Rotational speed detecting apparatus |
| 05/05/1981 | US4266147 Circuit arrangement for forming a speed-proportional output voltage from a speed-proportional pulse sequence |
| 05/05/1981 | US4265127 Low meter system provided with a pulse generator |
| 05/05/1981 | CA1100597A1 Self-adjusting exciter band for shaft speed magnetic pickup |
| 05/05/1981 | CA1100330A1 Digital speedometer for indicating velocity in at least two selectable units of measurement |
| 04/28/1981 | CA1099949A1 Digital speedometer with index control of display |
| 04/22/1981 | EP0027204A1 Rotational-frequency voltage converter |
| 04/21/1981 | US4263627 Electronic tachometer |
| 04/21/1981 | US4263578 Belt drive connection malfunction sensor |
| 04/21/1981 | US4263525 Signal generating means |
| 04/21/1981 | US4262641 Combined RPM limiter, and electronic tachometer with shift point indicator |
| 04/21/1981 | US4262537 Speedometer and/or hodometer for skiers |
| 04/21/1981 | US4262527 Self-adjusting engine timing pickup probe |
| 04/14/1981 | US4262251 Device for measuring rotational angle of rotary member |
| 04/08/1981 | EP0026636A2 Digital wheel speed sensor |
| 04/08/1981 | EP0026218A1 Modified slowdown and braking of an elevator car. |
| 04/07/1981 | US4260920 Multi-pole permanent magnet rotor |
| 04/07/1981 | US4260914 Differential linear velocity transducer |
| 03/31/1981 | US4259637 Mechanical assemblies employing sensing means for sensing motion or position |
| 03/31/1981 | US4259604 DC rotary machine |
| 03/31/1981 | CA1098604A1 Tachogenerator processing circuits and motor speed control systems including such circuits |
| 03/25/1981 | EP0025567A1 Optical arrangement for monitoring critical speeds of rotating devices |
| 03/24/1981 | US4258324 Signal conditioning circuit for magnetic sensing means |
| 03/24/1981 | US4258300 Apparatus for measuring the frequency of a pulse-generator and numerical control system using such apparatus |
| 03/17/1981 | US4257040 Engine rotational information detecting apparatus |
| 03/17/1981 | US4257005 Fixed interval variable period pulse rate measuring method and system and tachometer system using same |
| 03/17/1981 | US4256986 Magnetic pickup subassembly |
| 03/17/1981 | US4255976 Apparatus and method for measuring the velocity of a moving dielectric material |
| 03/11/1981 | EP0024904A2 A variometer |
| 03/11/1981 | EP0024836A1 Signal condition detector circuit |
| 03/10/1981 | US4255048 Direction sensitive laser velocimeter |
| 03/10/1981 | US4254659 Fluid dynamic angular rate sensor |
| 03/03/1981 | US4254344 Turbine start-up switch |
| 03/03/1981 | US4253341 Water meter comprising a ferromagnetic magnetoresistor coupled to a rotatable permanent magnet |
| 03/03/1981 | CA1096654A1 Automatic electrophoresis apparatus |
| 02/24/1981 | US4253021 Incremental measuring instrument |
| 02/24/1981 | US4253020 Apparatus for measuring projectile velocity |
| 02/24/1981 | US4252438 Measurement of relative movement between two phases |
| 02/24/1981 | CA1096474A1 Precision speed switch control |
| 02/17/1981 | USRE30522 Rotor for wheel speed sensor assembly |
| 02/17/1981 | US4251759 Relative motion monitor |
| 02/11/1981 | EP0023836A1 Change-speed transmission systems; engine-transmission assemblies incorporating such transmission systems |
| 02/11/1981 | EP0023801A1 Speed detectors |
| 02/10/1981 | US4250450 Detection of engine speed in response to ignition operation |
| 02/10/1981 | US4250380 Rotation angle detector |
| 02/04/1981 | EP0023365A2 Doppler-type projectile velocity measurement apparatus and method |
| 02/03/1981 | US4249117 Anti-kickback power tool control |
| 02/03/1981 | US4248085 Measurement of relative velocities |
| 02/03/1981 | US4248082 Anemometer |
| 01/28/1981 | EP0023123A1 Brushless tachometer generator |
| 01/28/1981 | EP0022944A2 Electronic ratio change control device for an automatic automobile vehicle transmission |
| 01/27/1981 | US4247796 Electrostatic transducer for generating strobe signals |
| 01/21/1981 | EP0022728A1 Electric high-tension switch with a functioning state indicator |
| 01/20/1981 | US4246536 Electronic velocity measurement device |
| 01/20/1981 | US4246478 Position detector with two timing disks rotating at different speeds |
| 01/14/1981 | EP0022222A1 A portable power tool having an electric motor with a rotatable armature shaft, and a tachometric generator |
| 01/13/1981 | US4245322 Transducer circuit for use in the measurement of the rotary speed of a shaft or other rotary member |
| 01/13/1981 | CA1093657A1 Warning method and system for road signalling with authorized speed display |
| 01/07/1981 | EP0021181A1 Measuring instrument with a magnetic rotor |
| 01/07/1981 | EP0021048A1 Apparatus for contactless photoeletric measurement of the speed of objects moving in a space |
| 01/07/1981 | EP0020565A1 Microcomputer device for computing and displaying the speed of a passing vehicle |
| 01/06/1981 | US4243940 AC to DC converter for antiskid systems |
| 01/06/1981 | US4243938 Digital bar graph tachometer |
| 12/30/1980 | US4241607 Tachometer device controlled by an electric motor |
| 12/30/1980 | US4241604 Nighttime wind direction and speed indicator |
| 12/30/1980 | CA1092701A1 Method and device for supervising the speed of an object |