| Patents for G01R 7 - Instruments capable of converting two or more currents or voltages into a single mechanical displacement (437) |
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| 07/16/1996 | US5537029 For electronically displaying metered electrical energy |
| 07/04/1996 | DE19548359A1 Device for electrical connection of electric meter to flexible wiring board e.g. for motor vehicle industry applications |
| 06/19/1996 | EP0716730A1 Method of reducing the magnitude of an uncontrolled instrument-pointer movement |
| 03/05/1996 | US5497078 Method and system for driving an air core gauge with improved pointer resolution |
| 02/06/1996 | US5489842 Method and apparatus for determining the rotational position of a magnetic rotor relative to current carrying coils utilizing magnetic coupling between coils |
| 01/18/1996 | WO1996001412A1 Method of reducing the magnitude of an uncontrolled instrument-pointer movement |
| 01/11/1996 | DE19524879A1 Pointer indicating unit with pointer and stepper motor for driving pointer |
| 12/14/1995 | DE4423119C1 Verfahren zur Nullpositionierung eines Zeigers A method for positioning a zero pointer |
| 11/07/1995 | CA2048118C Indicating instruments |
| 10/31/1995 | US5463314 Gauge with magnetically fixed rest position |
| 09/06/1995 | EP0670470A1 Pulse width modulation and signal averaging circuit for a meter driver |
| 09/05/1995 | US5448163 Meter drive including a timer for generating update cycles at a frequency larger than the input clock pulses and digital filtering |
| 08/16/1995 | EP0627083A4 Method and apparatus for electronic meter testing. |
| 07/19/1995 | EP0583392A4 Instrument display method and system for passenger vehicle. |
| 07/13/1995 | WO1995018994A1 Correction process between the electric phase angle and mechanical output angle of a step motor |
| 06/28/1995 | EP0660088A1 Moving-pointer instrument incorporating a screened electro-magnetic drive system |
| 05/09/1995 | US5414350 Rotating magnet measuring instrument and method for equalizing coil windings |
| 04/11/1995 | US5406303 Instrument display method and system for passenger vehicle |
| 02/07/1995 | US5387860 Detachable coils air core movement holder |
| 01/17/1995 | US5382897 Cross-coil type measuring instrument with correction means for varying a supply voltage |
| 01/04/1995 | EP0632276A1 Method for using a moving pointer instrument |
| 12/07/1994 | EP0627629A1 Ratio meter |
| 12/07/1994 | EP0627083A1 Method and apparatus for electronic meter testing |
| 11/17/1994 | EP0624779A1 Device for measuring the angular position of a rotor |
| 11/09/1994 | EP0623809A1 Improvements to damping means of cross coil type indicating instrument |
| 10/27/1994 | DE4400482A1 Correction procedure between the electrical phase angle and the mechanical output drive angle of a stepping motor |
| 10/25/1994 | US5359284 Air core gauge magnetic hysteresis compensation |
| 10/18/1994 | US5357196 Circuit for converting a frequency of an input signal so a signal having a digital value corresponding to the frequency |
| 10/18/1994 | US5357190 Cross coil type indicator in which the wire of each coil is connected to a terminal by soldering |
| 09/13/1994 | US5347213 Air core gauge method and apparatus with reduced power dissipation |
| 08/02/1994 | US5333371 Method for the manufacture of an indicating instrument |
| 05/24/1994 | US5315536 Meter driving system |
| 05/17/1994 | US5313155 Driving apparatus for cross-coil type analog indicating instrument having reduced ripple |
| 05/03/1994 | US5309087 Air core gauge, multi-frequency pulse width modulator system therefor |
| 03/23/1994 | EP0588582A1 Control circuit for a pointer instrument in a dashboard |
| 03/23/1994 | EP0588403A1 Method and apparatus for driving a gauge |
| 03/22/1994 | US5296804 Air core gauge fixed voltage signal and variable pulse width modulation signal interchanged control system therefor |
| 03/15/1994 | US5295049 Instrument for vehicle |
| 03/02/1994 | EP0584478A1 Method of manufacture of a display device |
| 03/01/1994 | US5291126 Pulse width modulation driving circuit for a cross coil meter |
| 02/23/1994 | EP0583392A1 Instrument display panel for passenger vehicle |
| 02/15/1994 | US5287050 Method of synchronization for an indicating instrument with electromagnetically controlled stepping motor |
| 01/05/1994 | DE4220519A1 Rotary magnet indicator for temp. measuring instrument display - applies trigonometric function from PWM control unit to first coil and complement of function to second coil to produce resultant field |
| 12/07/1993 | US5267526 Cross-coil type indicator |
| 12/07/1993 | CA1325038C Cross coil type indicator |
| 09/22/1993 | CN1076526A Method and apparatus for electronic meter testing |
| 09/07/1993 | US5243277 Cross coil meter |
| 09/02/1993 | WO1993017345A1 Method and apparatus for electronic meter testing |
| 08/24/1993 | US5239259 Moving magnet type indicating instrument combined with a counter mechanism |
| 08/24/1993 | CA1321620C Cross coil |
| 08/04/1993 | EP0554143A1 Pivoting electrical actuator, especially for use in vehicle dashboards |
| 07/21/1993 | EP0551562A2 Method for synchronising a display device having an electronically controlled stepper motor |
| 06/29/1993 | US5223791 Cross coil type indicating instrument having internally disposed engaging gears |
| 06/08/1993 | US5218291 Meter and meter driving system with indication fluctuation suppression and enhancement |
| 05/25/1993 | US5214597 Cross coil type indicator |
| 05/19/1993 | DE4137680A1 Rotary magnet quotient measurement mechanism for motor vehicle engine - contains magnetic coils acted on by pulse width modulated signals dependent on physical measurement parameter |
| 04/29/1993 | DE4235836A1 Crossed-coil measurement instrument, e.g. engine revolution rate meter - contains two coils at defined angle, bipolar movable magnet and drive arrangement producing polarised drive signals dependent on measurement parameter |
| 03/18/1993 | DE4228210A1 Crossed-coil indicator instrument with coil pair wound on coil body - has magnetic rotor in centre or coil body, pin connectors on outer body periphery with wire coiling sections |
| 02/11/1993 | DE4225819A1 Measurement circuit representing measured frequency values - contains clock pulse generator, edge detector, gate circuit, digital filter and corrects for display equipment scatter |
| 01/21/1993 | WO1992019992A3 Instrument display method and system for passenger vehicle |
| 01/05/1993 | US5177373 Pulse width modulation signal generating circuit providing N-bit resolution |
| 12/30/1992 | EP0520897A1 Controller for a crossed-coil meter |
| 11/12/1992 | WO1992019992A2 Instrument display method and system for passenger vehicle |
| 10/28/1992 | EP0511078A1 Apparatus for controlling a crossed-coil instrument |
| 10/21/1992 | EP0509484A1 PWM modulation circuit for a cross-coil meter driver |
| 10/14/1992 | EP0508437A1 Meter driving system |
| 09/30/1992 | EP0505826A1 Meter driving method |
| 09/08/1992 | US5146158 Externally adjustable stopper plate in a cross-coil type meter |
| 08/25/1992 | US5142412 Circuit for controlling a ration meter |
| 08/18/1992 | US5138968 Cross coil-shaped indicating instrument |
| 07/22/1992 | EP0495438A1 Cross coil type indicating instrument |
| 06/09/1992 | US5121347 Apparatus for manipulating triangular wave signals used to drive a gauge having a pair of coils arranged in quadrature |
| 06/02/1992 | US5119320 Cross coil type indicator |
| 03/17/1992 | US5097203 Method and circuit for producing an input variable for a cross-coil indicating device |
| 03/10/1992 | US5095266 Cross-coil type indicating instrument |
| 02/05/1992 | EP0469808A1 Screened indicating instrument |
| 01/08/1992 | EP0465334A1 Apparatus and method for filtering electrical signals, in particular for driving crossed-coil instruments |
| 12/31/1991 | CA1293771C Instrument with crossed-coil type movable magnet |
| 10/29/1991 | US5062135 Cross coil type indicating gauge |
| 10/29/1991 | US5061893 Mounting for the rotary magnet of a rotary magnet-ratio meter |
| 10/29/1991 | US5061891 Cross coil |
| 10/22/1991 | US5059916 Gauge driver for use with a remote sensor and having reduced offset potential response |
| 10/01/1991 | US5053744 Combination meter system of vehicle |
| 09/24/1991 | US5051688 Crossed coil meter driving device having a plurality of input parameters |
| 08/14/1991 | EP0440979A1 Wide angle gauge driver with resistive sensor |
| 08/06/1991 | US5038099 Radial air-core gauge |
| 07/24/1991 | EP0437783A2 Meter Driving device |
| 07/16/1991 | US5032781 Method and circuit for operating a stepping motor |
| 05/21/1991 | US5017861 Meter driving apparatus |
| 04/02/1991 | US5004976 Wye winding radial air-core gauge system |
| 02/27/1991 | EP0413891A2 Process and appliance forming an input signal for a crossed-coil type indicating instrument |
| 02/12/1991 | US4992726 Woven crossed-coil air-core gauge |
| 02/06/1991 | CN1011552B Crossed coil moving-magnet meter |
| 02/05/1991 | US4991098 Computer-based controller and bipolar PWM driver arrangement for air core gauge control |
| 01/29/1991 | US4988944 Cross coil type instrument |
| 01/02/1991 | EP0405010A2 Moving-magnet quotient-measuring instrument |
| 12/27/1990 | EP0403691A1 Method of detecting a predetermined pointer position and display device therefor |
| 10/25/1990 | DE4012610A1 Dashboard instrumentation system for vehicle, - uses standard 2-coil electric meter indicators and central current transducers with memorised correction table |
| 08/22/1990 | EP0382887A1 Stepper motor motion sensor |
| 08/01/1990 | EP0379816A1 Control for crossed-coil instruments |