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| Number | Title | Issue Date |
| 7355383 | Cross coil instrument with a predefined characteristic The present invention relates to the visual representation of an input value, and provides an instrument, which can be given any predefined characteristic of its visual display. Cross-coil instrument is provided, said cross-coil instrument comprising a driver for th... | 04/08/2008 |
| 7274305 | Electrical utility communications and control system A system for managing collection of data and remote operation of fielded remote units is disclosed. The remote units may be incorporated in automatic meter reading systems, capacitor bank switching systems, power line fault detection units, power recloser units, sur... | 09/25/2007 |
| 7230418 | Flutter reduction apparatus and method A tachometer circuit includes a flutter reduction circuit and a tachometer. The tachometer circuit cancels pointer flutter in the tachometer without adversely affecting pointer response. ... | 06/12/2007 |
| 7113077 | System and method for providing a display utilizing a fast photon indicator A measuring gauge includes a rotatable LED pointer having a light output. As the pointer is rotated about a lens at a constant rate, the output of the LED pointer appears as an arc of light to a user. The arc of light represents a quantity of a desired display unit.... | 09/26/2006 |
| 7085115 | Non-ferrous surge biasing coil having multiple pairs of coils positioned at angles to one another A surge suppression device includes a first and second coil positioned in close proximity to one another such that the windings of each coil are disposed at an angle thereto. In a preferred embodiment, the coils are disposed such that the windings of each coil are p... | 08/01/2006 |
| 6958602 | High-accuracy 1X variable-reluctance resolver A high-accuracy, 1X VR resolver includes a first rotor portion having (N−1) salient poles, where N is an arbitrary integer not less than 3, a second rotor portion having N salient poles, a first stator portion having an input coil and an output coil for a shaft an... | 10/25/2005 |
| 6718214 | Method for switching consumer on or off A method for turning various classes of loads on and off by means of switch elements in the context of energy management performed by a control unit, particularly in a motor vehicle, is described, in which the triggering of the switch elements is done such that the ... | 04/06/2004 |
| 6184674 | Indicating instrument with migration barriers Moving magnet indicating instruments in which a damping fluid migration barrier projects from the inside of one wall of the bobbin coil and another damping fluid migration barrier projects from the face of the rotor which confronts that wall. Certain flui... | 02/06/2001 |
| 5854552 | Moving magnet indicating instruments with a plurality of damping fluid migration barriers Moving magnet indicating instruments in which a damping fluid migration barrier projects from the inside of one wall of the bobbin coil and another damping fluid migration barrier projects from the face of the rotor which confronts that wall.... | 12/29/1998 |
| 5761074 | Frequency data converter and meter apparatus In one data updating period, an edge pulse signal generator detects an edge of a pulse signal, and generates a one-shot pulse signal. A digital filter performs digital filter processing of the one-shot pulse signal, and outputs one frequency data. An aver... | 06/02/1998 |
| 5550465 | Driving apparatus for cross-coil type analog indicating instrument A pulse signal generated by a car speed sensor is converted to an analog voltage by a F-V converter, and two sawtooth signals are formed by two sawtooth current generators based on the analog voltage. The sawtooth currents are then converted into two tria... | 08/27/1996 |
| 5497078 | Method and system for driving an air core gauge with improved pointer resolution A method and system for driving an air core gauge whereby pointer resolution of an air core gauge is improved across a full range of motion. The method including the steps of generating a first gauge control signal responsive to a signal, the first gauge ... | 03/05/1996 |
| 5486755 | Electronic meter having anti-tampering magnetic shield An electronic meter for measuring electricity includes a magnetic shield positioned adjacent each outermost toroidal coil of electrical current sensors to thereby resist tampering by a magnetic field applied from outside the meter housing. The magnetic sh... | 01/23/1996 |
| 5448163 | Meter drive including a timer for generating update cycles at a frequency larger than the input clock pulses and digital filtering There is disclosed a meter driving device which can perform a smooth indication through a simple process in response to an input pulse even if the frequency of the input pulse is relatively low. An edge detector generates a one-shot pulse each time the edge of... | 09/05/1995 |
| 5446655 | Multiple-meter driving apparatus A multiple-meter driving system intends to cut down on the amount of space needed and to reduce the manufacturing cost by providing a single controller including a processing circuit, the controller being adapted collectively to drive a plurality of meter... | 08/29/1995 |
| 5426589 | Method of and apparatus for limiting electrical loads on an electric vehicle Disclosed herein is a method of and an apparatus for limiting electrical loads due to electrical equipment on an electric vehicle. In the electrical load limiting apparatus, a desired running distance is inputted by a desired running distance inputting de... | 06/20/1995 |
| 5414350 | Rotating magnet measuring instrument and method for equalizing coil windings A rotating magnetic measuring instrument including a form for receiving thereon first and second coil windings, with the second coil being wound within the first coil. The second coil includes a section thereof wound in a reverse direction for reducing th... | 05/09/1995 |
| 5382897 | Cross-coil type measuring instrument with correction means for varying a supply voltage A cross-coil type measuring instrument which is employed as an engine tachometer for instance. A cross-coil type measuring instrument includes a cross-coil type measuring unit having a pair of coils arranged crossed forming a predetermined angle with each... | 01/17/1995 |
| 5357190 | Cross coil type indicator in which the wire of each coil is connected to a terminal by soldering According to the present invention, a cross coil indicator comprises a coil bobbin; a pair of coils wound around said coil bobbin, said coils being disposed orthogonally to each other; a magnet rotor disposed in an inner portion of said coil bobbin, said ... | 10/18/1994 |
| 5347213 | Air core gauge method and apparatus with reduced power dissipation An air core gauge method and apparatus are disclosed. The apparatus receives an input signal and comprises a gauge device and driver circuit for driving the gauge device. A detection circuit detects transitions in the input signal and provides a control o... | 09/13/1994 |
| 5315536 | Meter driving system A meter driving system measures a period of input signals, and operates meters based on the measured period data. When no period data arrive in a preset period of time after the last period data, the lapsed time is treated as the period data so as to rene... | 05/24/1994 |
| 5313155 | Driving apparatus for cross-coil type analog indicating instrument having reduced ripple A driving apparatus used for an analog indicating instrument having a pair of cross coils comprises a pulse signal generating device for generating a pulse signal having a frequency proportional to a quantity to be measured, a frequency-voltage conversion... | 05/17/1994 |
| 5309087 | Air core gauge, multi-frequency pulse width modulator system therefor A pulse-width modulation system provides means for controlling dual-coil, air-core gauges at a various rates over 360 degrees. The system moves a dial needle from one octant of the gauge to the next in response to coded data representing measurands by hol... | 05/03/1994 |
| 5296804 | Air core gauge fixed voltage signal and variable pulse width modulation signal interchanged control system therefor A pulse-width modulation system provides means for controlling dual-coil, air-core gauges over 360 degrees. The system moves a dial needle from one octant of the gauge to the next in response to coded data representing measurands by holding one coil at 10... | 03/22/1994 |
| 5291126 | Pulse width modulation driving circuit for a cross coil meter A meter drive apparatus using a counter for counting reference clocks and a comparator for comparing the output value of the counter and the data indicating a directive target of a meter. The output of the comparator is supplied to steering logic where th... | 03/01/1994 |
| 5243752 | Process of manufacturing an instrumentation apparatus with curable internal magnets An instrumentation apparatus with curable internal magnets is shown. The apparatus comprises a magnetic rotor and a rotatably mountable spindle to which the magnetic rotor is attached. A support structure to which the spindle is rotatably mounted defines ... | 09/14/1993 |
| 5243277 | Cross coil meter Disclosed herein is a cross coil having a first coil winding for generating a first magnetic field when an electrical current flows therethrough and a second coil winding for generating a second magnetic field when an electrical current flows therethrough... | 09/07/1993 |
| 5239259 | Moving magnet type indicating instrument combined with a counter mechanism A moving magnet type indicating instrument comprising a moving magnet type instrument, a counter mechanism, a drive unit, and a frame body produced of a synthetic resin. The magnet type indicating instrument includes a magnet mounted in bobbins produced o... | 08/24/1993 |
| 5218291 | Meter and meter driving system with indication fluctuation suppression and enhancement A meter driving system receives pulse signals from a sensor, counting frequencies or periods of the input signals. The counted results are weight-averaged to determine an output value and a value to be indicated. In a weight-averaging process, a weight is... | 06/08/1993 |
| 5121347 | Apparatus for manipulating triangular wave signals used to drive a gauge having a pair of coils arranged in quadrature An apparatus for driving a gauge having coils in quadrature to generate a resultant magnetic field in accordance with currents applied thereto and having a pointer angularly swept by the field, the apparatus having a memory to store a first data defining ... | 06/09/1992 |
| 5059916 | Gauge driver for use with a remote sensor and having reduced offset potential response A gauge circuit for use with a wide angle air core meter display having high linearity and adapted for use with a remote sensing resistor. A constant sense current is provided and its value is moudlated at a frequency that is high with respect to the freq... | 10/22/1991 |
| 5051688 | Crossed coil meter driving device having a plurality of input parameters A meter driving device for indicating angular positions corresponding to input values. The device includes a memory for storing previously given input values, angular directions corresponding to the input values, and coefficients representative of the gra... | 09/24/1991 |
| 5038099 | Radial air-core gauge A radial type air-core gauge includes orthogonally positioned pairs of stator coils wound on independent coil forms spaced radially 90 degrees apart about a central cup of a gauge case. The cup houses a permanent magnet rotor which rotates about a shaft e... | 08/06/1991 |
| 4988944 | Cross coil type instrument A cross coil type instrument includes a plurality of coils cross-arranged around a movable permanent magnet, a needle fastened to the movable permanent magnet through a shaft projecting from the movable permanent magnet and penetrating the coils, a reset-... | 01/29/1991 |
| 4928060 | Driving circuit of a crossed-coil type instrument using digital data pulse production A driving circuit for driving a crossed-coil type instrument used for reading a physical quantity in which a pair of windings surrounding a movable magnet carrying a pointer needle thereon are disposed to cross each other with a predetermined mechanical a... | 05/22/1990 |
| 4924178 | Drive apparatus for a cross coil type meter A drive apparatus for a cross-coil type meter has cross-coils formed of a first and a second coil disposed intersecting at the center thereof. A magnet rotor is disposed in a magnetic field set up by the cross coils, and a measurement is represented in te... | 05/08/1990 |
| 4906919 | Moving magnet type meter In the moving magnet type meter of the present invention, the coil mounting portions of a bobbin body are projected outwards in a generally arched shape on the central side to form circular arc-like or inclined surfaces, whereby the bobbin body can be mad... | 03/06/1990 |
| 4827209 | Instrument with crossed-coil type movable magnet An instrument has a crossed-coil-type movable magnet in which a movable magnet rotatable about the shaft of a pointer needle is installed in a crossed coil unit and a measured quantity or the like is operated by supplying electric power to the crossed coi... | 05/02/1989 |
| 4827210 | Cross-coil moving-magnet measuring instrument In a cross-coil moving-magnet measuring instrument having an approximately cylindrical core developed as winding form, a first coil and a second coil are wound crosswise one over the other. The second coil is necessarily arranged over the first coil in th... | 05/02/1989 |
| 4760333 | Crossed coil meter having concentrically wound magnetic shield A meter of the type having crossed coils, comprises an outer body having a cylindrical wall surrounding the coils, and an insert of an amorphous metal alloy that is disposed in a cylindrical bore defined by the wall. The insert surrounds the coils and is ... | 07/26/1988 |
