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Class Information
Number: 33/326
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Gyroscopically controlled or stabilized > Gyroscopic compass > Selective correction for deviation
Description: Device provided with means to compensate for forces or disturbances causing deflection in the meridian seeking action of the gyroscope by presetting the compensating means to a desired position. Included in this subclass are adjustable means for correcting the readings of such compasses for errors due to the speed, course or latitude of the craft on which they are carried.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7458264 |
Generalized inertial measurement error reduction through multiple axis rotation during flight |
Dec. 2, 2008 |
| 6131297 |
Gyro compass |
Oct. 17, 2000 |
| 5699256 |
Offset-drift correcting device for gyro-sensor |
Dec. 16, 1997 |
| 5612687 |
Process for regulating the orientation of a support structure such as that carrying a head-up control system on an aircraft |
Mar. 18, 1997 |
| 5566461 |
Method of determining the direction of north |
Oct. 22, 1996 |
| 5416976 |
Gyro compass |
May. 23, 1995 |
| 5396326 |
Two gimbal error averaging astro-inertial navigator |
Mar. 7, 1995 |
| 5355034 |
Drift suppressing circuit of gyroscope |
Oct. 11, 1994 |
| 5272815 |
Gyro compass |
Dec. 28, 1993 |
| 5247748 |
Gyro compass |
Sep. 28, 1993 |
| 5115570 |
Method for eliminating gyro errors |
May. 26, 1992 |
| 4977679 |
Azimuth signal generator |
Dec. 18, 1990 |
| 4622646 |
Arrangements for correcting compasses |
Nov. 11, 1986 |
| 4458426 |
Gyroscopic apparatus |
Jul. 10, 1984 |
| 4399694 |
Gravity gradiometer compass |
Aug. 23, 1983 |
| 4379365 |
Gyrocompass |
Apr. 12, 1983 |
| 4336596 |
Method and apparatus for electronically rotating a heading signal |
Jun. 22, 1982 |
| 4283960 |
Gyroscope indexing drive mechanism |
Aug. 18, 1981 |
| 4214482 |
Inertial instrument |
Jul. 29, 1980 |
| 4179087 |
Gyroscope rate range switching and control system |
Dec. 18, 1979 |
| 4033045 |
Portable surveying gyrocompass apparatus |
Jul. 5, 1977 |
| 3997975 |
Calibration of a meridian seeking instrument |
Dec. 21, 1976 |
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