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Class Information
Number: 33/357
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Magnetic field responsive > Error indicator, preventor, or compensator > Error-producting-field minimizing
Description: Device wherein the means prevents the extraneous force from affecting the magnetically influenced means by either absorbing said extraneous force or providing an opposing force of an equal amount.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7331115 |
Vehicle compass compensation |
Feb. 19, 2008 |
| 7248983 |
Electronic compass and method of controlling an electronic compass using independent calibration and compass heading modules |
Jul. 24, 2007 |
| 7168176 |
Geomagnetic sensor for informing users whether detected azimuth angle is acceptable, and a method thereof |
Jan. 30, 2007 |
| 6928366 |
Electronic compass system |
Aug. 9, 2005 |
| 6922902 |
Vehicle compass compensation |
Aug. 2, 2005 |
| 6662459 |
Electronic azimuth meter and timepiece |
Dec. 16, 2003 |
| 6643941 |
Vehicle compass system with continuous automatic calibration |
Nov. 11, 2003 |
| 6606799 |
Electronic azimuth meter and electronic time piece having electronic azimuth meter |
Aug. 19, 2003 |
| 6543146 |
Electronic compass and compensation of large magnetic errors for operation over all orientations |
Apr. 8, 2003 |
| 6513252 |
Vehicle compass compensation |
Feb. 4, 2003 |
| 6466871 |
Method for calibrating and verifying the attitude of a compass |
Oct. 15, 2002 |
| 6356851 |
Accelerated calibration for electronic compass module |
Mar. 12, 2002 |
| 6301794 |
Vehicle compass system with continuous automatic calibration |
Oct. 16, 2001 |
| 6286221 |
System using magnetic signatures to detect a vehicle event |
Sep. 11, 2001 |
| 6286222 |
System for eliminating magnetic noise generated by vehicle accessories |
Sep. 11, 2001 |
| 6243649 |
GPS true course guidance correction system for correcting antenna offset error |
Jun. 5, 2001 |
| 6049761 |
Vehicular traveling direction measuring system |
Apr. 11, 2000 |
| 6014610 |
Navigation system and method |
Jan. 11, 2000 |
| 6009629 |
Process for determining the direction of the earth's magnetic field |
Jan. 4, 2000 |
| 5946813 |
Method and device for determining correction parameters |
Sep. 7, 1999 |
| 5828984 |
Data processing method for an electronic compass system |
Oct. 27, 1998 |
| 5481808 |
Vehicle orientation sensor and method with magnetic stabilization |
Jan. 9, 1996 |
| 5440303 |
Direction detecting apparatus and method thereof |
Aug. 8, 1995 |
| 5349529 |
Method of correcting magnetization vector |
Sep. 20, 1994 |
| 5287295 |
Method and apparatus for calibrating an electronic compass to account for alignment errors in the compass windings |
Feb. 15, 1994 |
| 5201128 |
Miniature gimbal mounted magnetic field detectors |
Apr. 13, 1993 |
| 5131155 |
Apparatus and method for measuring forward direction of vehicle |
Jul. 21, 1992 |
| 5021962 |
Navigation method for vehicles with electronic compass |
Jun. 4, 1991 |
| 4989333 |
Navigation method for vehicles with electronic compass |
Feb. 5, 1991 |
| 4870602 |
Method for determining route angles |
Sep. 26, 1989 |
| 4782453 |
Method of determining the location of a navigational magnetic field sensor in a vehicle |
Nov. 1, 1988 |
| 4672565 |
Direction detecting system for vehicles |
Jun. 9, 1987 |
| 4539760 |
Compass |
Sep. 10, 1985 |
| 4523386 |
Heading detecting apparatus |
Jun. 18, 1985 |
| 4505054 |
Magnetic sensor mounting system |
Mar. 19, 1985 |
| 4463314 |
Earth field compensation for a magnetic detector by imparting a permanent magnetization to a magnetic material contiguous the detector |
Jul. 31, 1984 |
| 4416067 |
Correction method and device for a magnetic field probe |
Nov. 22, 1983 |
| 4414753 |
Process for compensating the magnetic disturbances in the determination of a magnetic heading, and devices for carrying out this process |
Nov. 15, 1983 |
| 4402142 |
Electronic compass for automotive vehicles |
Sep. 6, 1983 |
| 4393598 |
Borehole tool |
Jul. 19, 1983 |
| 4358886 |
Method of mounting an azimuth indicator in an automobile |
Nov. 16, 1982 |
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