| Patents for G01P 13 - Indicating or recording presence or absence of movement; Indicating or recording of direction of movement (5,618) |
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| 06/06/1989 | US4836019 Compact air data sensor |
| 05/30/1989 | US4835435 Simple, sensitive, frequency-tuned drop detector |
| 05/30/1989 | US4833918 Sensor and method for ullage level and flow detection |
| 05/23/1989 | US4833281 Motion detector |
| 05/17/1989 | EP0316093A2 Velocity distribution measurement apparatus |
| 05/16/1989 | US4829773 Air flow visualizing device |
| 05/09/1989 | US4829247 Angle sensor with inductive coil coupling |
| 05/09/1989 | CA1253750A1 Flow indicating device |
| 05/03/1989 | EP0313660A1 Air stream visualization apparatus |
| 05/02/1989 | US4827123 Direction sensitive optical shaft encoder |
| 05/02/1989 | US4827092 Flow monitor with non-rotatable mounting |
| 05/02/1989 | US4826482 Enhanced pressure measurement flow control system |
| 05/02/1989 | US4825747 Method and device for detecting a fluid flow rate |
| 04/26/1989 | EP0313120A1 Direction-sensitive flow-rate indicator |
| 04/26/1989 | EP0312769A1 Process and apparatus for mixing fluid substances |
| 04/20/1989 | WO1989003534A1 Process and device for determining the direction of motion of an electrically conducting object |
| 04/20/1989 | WO1989003233A1 Method for colonic and intestinal irrigation |
| 04/18/1989 | US4821700 Device for determining mass flow and direction of flow |
| 04/13/1989 | DE3733136A1 Electrical layout for measuring rotational speed |
| 04/12/1989 | EP0311130A2 Method and apparatus for determining the direction of movement of an electrically conductive object |
| 04/12/1989 | EP0310768A1 Digital pulse generator |
| 04/04/1989 | US4817426 Method and an apparatus of determining the angle of an incident flow and/or of the airspeed at a stationary or moving point of measurement |
| 04/04/1989 | CA1252000A1 Fluid flow sensor |
| 03/30/1989 | DE3730511A1 Monitoring device for a medium, e.g. lubricating (lube) oil, fed in small quantities both discontinuously and continuously to a gas flow |
| 03/28/1989 | US4816763 Fluid flow monitoring |
| 03/28/1989 | US4816019 Infiltration detection system using pressure measurement |
| 03/23/1989 | DE3729949A1 Rotary position transducer with pulsed wire sensors |
| 03/22/1989 | EP0307709A1 Device for detecting the rotation and/or for measuring the rotation speed of a small DC motor with permanent or electro-magnets |
| 03/22/1989 | EP0307677A1 Method for target field clarification |
| 03/21/1989 | US4814764 Apparatus and method for warning of a high yaw condition in an aircraft |
| 03/15/1989 | EP0210194B1 Electrostatic deposition of coating materials |
| 03/15/1989 | CN1031759A Fluid flow indicator |
| 03/14/1989 | US4812645 Structural monitoring system using fiber optics |
| 03/14/1989 | US4811665 Magnetic sensor arrangement |
| 03/09/1989 | WO1989002061A1 Compact air data sensor |
| 03/09/1989 | WO1989002012A1 Non-contact control |
| 03/09/1989 | WO1989001795A1 Enhanced pressure measurement flow control system |
| 03/07/1989 | US4811001 Shaft speed monitor |
| 03/07/1989 | US4809552 Multidirectional force-sensing transducer |
| 03/02/1989 | DE3727906A1 Device for the redundant measurement of the incidence angle and slip angle of flying vehicles, in particular aircraft |
| 02/28/1989 | US4808161 Pressure-measurement flow control system |
| 02/28/1989 | US4807990 Laser fluorescence velocimeter |
| 02/21/1989 | US4806016 Optical displacement sensor |
| 02/14/1989 | US4804935 Sensor for measurement by electrical heating and method for manufacture of the same |
| 02/14/1989 | US4804360 Intravenous line valve |
| 02/09/1989 | DE3725087A1 Dynamic pressure wind sensor (anemometer) for speed and direction |
| 02/07/1989 | US4803425 For use in AC tachometer |
| 02/07/1989 | US4802334 Augmentor fuel system |
| 02/01/1989 | EP0301063A1 Wind-vane with magnetic bearing. |
| 01/19/1989 | DE3722744A1 Magnetic angle transmitter |
| 01/18/1989 | EP0299676A2 Fluid flow indicator |
| 01/18/1989 | CN1030479A Differential temp. sensor and instrumentation system incorporating same for detecting presence of water |
| 01/03/1989 | US4794795 Directional thermal anemometer transducer |
| 12/27/1988 | US4794380 Means and method for determining the rotation direction of an oil well pumping unit crank arm |
| 12/22/1988 | DE3718733A1 Pulse generator circuit for incremental position sensors (encoders) |
| 12/20/1988 | US4791810 Flow monitoring |
| 12/15/1988 | WO1988009918A1 Device for position determination of transition zones between at least two different enclosing media |
| 12/13/1988 | US4791414 Water-flow detector |
| 12/13/1988 | US4790321 Method of displaying stream lines of an inhomogeneous flowing medium and a device therefor |
| 12/13/1988 | US4790255 Wind and boom direction indicating device |
| 12/06/1988 | CA1246184A1 Process and device for the contact free determination of the movement of an object |
| 11/29/1988 | US4788534 Wind alarm sensor |
| 11/23/1988 | EP0146640B1 Period detection circuit |
| 11/17/1988 | WO1988009026A1 Improvements relating to rotary encoders |
| 11/17/1988 | WO1988008959A1 Optical displacement sensor |
| 11/17/1988 | EP0291387A1 Method for measuring the flow in a nuclear magnetic resonance experiment |
| 11/17/1988 | EP0290554A1 Method for representing moving parts in a body by nmr experimentation |
| 11/15/1988 | US4784643 Detector of air bubbles in a circuit of liquid |
| 11/15/1988 | CA1244905A1 Emergency refrigerant containment and alarm system apparatus and method |
| 11/09/1988 | CN88101631A Apparatus of using eye measuring airstream |
| 11/03/1988 | DE3712865A1 Method for detecting moving targets by means of an optronic (electrooptic) image recording device (camera) |
| 11/02/1988 | EP0288806A2 Heat transfer measuring device, in particular for flow monitoring |
| 11/01/1988 | US4782333 Water-flow detector with rapid switching |
| 10/26/1988 | EP0287864A2 Movement detector |
| 10/26/1988 | EP0287827A2 Method for the operation of a pyrodetector for the detection and/or determination of the velocity of a moving object |
| 10/25/1988 | US4780907 Method of measuring the types of motion and configuration of biological and non-biological objects |
| 10/20/1988 | WO1988008125A1 Air stream visualization apparatus |
| 10/18/1988 | US4779094 Apparatus for remotely determining the angular orientation, speed and/or direction of rotary objects |
| 10/18/1988 | US4778451 Flow control system using boyle's law |
| 10/13/1988 | DE3710558A1 Low-inertia measuring device for determining the direction and velocity of fluids |
| 10/12/1988 | EP0286398A2 Rotation angle measuring apparatus |
| 10/12/1988 | EP0285961A1 Infrared detector |
| 10/05/1988 | EP0285451A1 A flow sensor |
| 10/04/1988 | US4774833 Device for determining mass flow and direction of flow |
| 09/20/1988 | US4771608 Non-contaminating flow visualization system |
| 09/06/1988 | US4769595 Pulse length indicator |
| 09/06/1988 | US4769545 Motion detector |
| 08/25/1988 | DE3722059C1 Measuring device for fluid jets |
| 08/24/1988 | EP0279639A2 Dual heating system |
| 08/23/1988 | US4765326 Low-flow alarm system for powdered air-purifying respirator |
| 08/17/1988 | EP0278052A1 Apparatus for spreader control at a road salt spreader |
| 08/11/1988 | WO1988005917A1 Non-contaminating flow visualization system |
| 08/11/1988 | WO1988005916A1 Wind-vane with magnetic bearing |
| 08/10/1988 | CN87107059A Detecting device for the stop of rotation |
| 08/09/1988 | US4763114 Fluid flow indicator |
| 08/02/1988 | US4761650 System for measuring height distributions of atmospheric temperature, wind direction and wind speed |
| 07/20/1988 | EP0274841A2 Processing quadrature signals |
| 07/19/1988 | US4758825 For warning of an undesired velocity condition in a rotating shaft |
| 07/19/1988 | US4758769 Apparatus for sensing direction of rotation |
| 06/21/1988 | US4752682 Slippage sensors for object-gripping mechanisms in automated machinery |