| Patents for G01C 19 - Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects (15,537) |
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| 04/09/1991 | US5007065 Bilithic unidirectional ring laser |
| 04/04/1991 | DE3931609A1 Flexible connection between free-standing base and rotatable object - uses flexible line rotated at half angular rotation of rotatable element |
| 04/02/1991 | US5004344 Apparatus and method for correcting ring laser gyroscope phase errors at turnaround |
| 04/02/1991 | US5004343 Multiple ring paths in one block |
| 04/02/1991 | US5004342 Measuring device having a laser and a ring resonator |
| 04/02/1991 | US5004341 Active optical gyrometer employing a phase conjugation |
| 03/27/1991 | EP0419279A2 Ring laser gyroscopes |
| 03/27/1991 | EP0418539A2 Fiber optic gyro |
| 03/26/1991 | US5001940 Gyro for detecting signals along two axes |
| 03/21/1991 | WO1991003703A1 Interferometer utilizing superfluorescent optical source |
| 03/19/1991 | US5000571 Method of fabricating a readout apparatus for a ring laser gyroscope |
| 03/19/1991 | US5000053 Apparatus for increasing suspension stiffness in a gyro |
| 03/13/1991 | EP0416531A2 Serrodyne resonator fiber optic gyroscope and method for operating it |
| 03/13/1991 | EP0416070A1 Single-polarization, integrated optical components for optical gyroscopes. |
| 03/13/1991 | EP0242396B1 Synchronous fm digital detector |
| 03/12/1991 | US4998822 Rotation rate nulling servo and method for fiber optic rotation sensor |
| 03/12/1991 | CA1281203C Vibratory digital integrating accelerometer |
| 03/08/1991 | CA2021073A1 Dual serrodyne resonator fiber optic gyroscope |
| 03/07/1991 | WO1991002997A1 Inertial stabilizing system |
| 03/07/1991 | DE3929239A1 Ring laser gyro achieves increased resolution |
| 03/06/1991 | EP0415004A2 Fibre optic gyroscope |
| 03/06/1991 | EP0414733A1 Scatter symmetrization in multi-mode ring laser gyros. |
| 03/05/1991 | US4997282 Dual fiber optic gyroscope |
| 03/05/1991 | US4996877 Three axis inertial measurement unit with counterbalanced mechanical oscillator |
| 02/27/1991 | EP0414057A2 Method for eliminating gyroscope errors |
| 02/27/1991 | EP0413713A1 Compensated piezoelectric mirror for laser gyrometer |
| 02/21/1991 | WO1991002155A1 Gyrostat propulsion system |
| 02/20/1991 | EP0413594A2 Seeker |
| 02/20/1991 | EP0222909B1 Dither signal remover for a dithered ring laser angular rate sensor |
| 02/19/1991 | US4993274 Gyroscope system |
| 02/13/1991 | EP0412468A1 Synthetic serrodyne controller for fiber optic gyroscope |
| 02/13/1991 | EP0412311A1 Fiber optic gyroscope of the Sagnac-type |
| 02/13/1991 | EP0412309A1 Fibre optic gyroscope of the Sagnac type |
| 02/12/1991 | US4993040 Ring laser gyro |
| 02/12/1991 | US4993039 Ring laser gyro |
| 02/12/1991 | US4992656 for measuring the spatial gradient |
| 02/12/1991 | US4991926 Integrated optics decorrelator |
| 02/11/1991 | WO1991002444A1 Atomic interferometry gyroscopes, accelerometers, and gravity gradiometers |
| 02/06/1991 | EP0411959A1 Method for detecting changes in spin rate of a missile in flight |
| 02/06/1991 | EP0411849A1 Attitude sensor |
| 02/06/1991 | EP0411824A2 Dither arrangements |
| 02/06/1991 | EP0411565A2 Autonomously directable gyroscope arrangement with dual-axis platform |
| 02/05/1991 | US4989465 Containing azide |
| 01/30/1991 | EP0410057A1 Wavelength meter |
| 01/29/1991 | US4988908 Piezoelectric transducers for a ring laser gyroscope dither motor |
| 01/24/1991 | WO1991001008A1 Angular rate sentor |
| 01/24/1991 | DE3922697A1 Double autonomous navigation system developed from gyro compass - uses additional acceleration sensors and mathematical model-based integration program in computer |
| 01/23/1991 | EP0409375A1 Phase modulation method and device for a rotation sensor |
| 01/22/1991 | US4987334 Piezoelectric dither motor |
| 01/22/1991 | US4986661 Solid state fiber optic semiconductor ring laser apparatus |
| 01/22/1991 | US4986139 Gyroscope control systems |
| 01/15/1991 | US4984459 Rate of turn indicator |
| 01/09/1991 | EP0406891A1 Angular velocity sensor |
| 01/08/1991 | US4984298 Communications system |
| 01/02/1991 | EP0405821A1 Ring resonator gyro |
| 01/02/1991 | EP0405529A1 Ring laser gyroscope |
| 01/02/1991 | EP0405476A1 Gimbal module |
| 01/02/1991 | EP0405452A2 Gas flow type angular velocity sensor |
| 01/02/1991 | EP0405152A2 Method for adjusting a spinning piezoelectric beam of a dual-axis angular rate sensor |
| 01/01/1991 | US4981359 Ring laser gyroscope dither drive system and method |
| 01/01/1991 | US4981358 Measuring the relative effective lengths traversed by counterpropagating beams of light |
| 12/31/1990 | CA2019342A1 Gimbal module |
| 12/27/1990 | WO1990015967A1 Fibre laser gyrometer |
| 12/27/1990 | EP0403645A1 Rotation sensor |
| 12/27/1990 | EP0213182B1 Multiple ring laser gyro power supply |
| 12/27/1990 | EP0192770B1 A system for reducing the sensitivity of a ring laser gyro to changes in magnetic field |
| 12/25/1990 | US4979796 Thermally controlled optical fiber |
| 12/19/1990 | EP0402706A1 Ring laser gyroscope |
| 12/19/1990 | EP0402565A1 Method of autocorrecting a fiber optic gyroscope using a 3x3-coupler |
| 12/13/1990 | WO1990015335A1 Sensor for determining angular velocity |
| 12/13/1990 | DE3917832A1 Sensor zur bestimmung der winkelgeschwindigkeit Sensor for determining the angular velocity |
| 12/12/1990 | EP0401672A1 Ring laser gyroscope |
| 12/12/1990 | EP0401671A1 Ring laser gyroscope with rotational vibration device |
| 12/11/1990 | USRE33479 Vibratory angular rate sensing system |
| 12/11/1990 | US4976765 Using heat devitrifiable frit |
| 12/05/1990 | EP0400197A1 Process and device for demodulating the turning rate signal of a fibre-optical gyroscope |
| 12/05/1990 | EP0366756A4 Broadband optical fiber laser |
| 12/05/1990 | CN1010710B Automatic calibration for accelerometer of spacecraft |
| 11/29/1990 | WO1990014577A1 Annular interferometer |
| 11/29/1990 | CA2017726A1 Spinning piezoelectric beam of a dual-axis angular rate sensor and method for its adjustment |
| 11/27/1990 | US4973162 Ring laser gyroscope readout |
| 11/27/1990 | US4973161 Ring laser gyroscopes |
| 11/27/1990 | US4973013 Seeker |
| 11/27/1990 | CA1276810C Phase reading fiber optic interferometer |
| 11/22/1990 | EP0398796A1 Ring interferometer |
| 11/22/1990 | EP0398144A2 Fiber optic gyro |
| 11/22/1990 | EP0398004A1 Ring laser gyroscope frames and method for making |
| 11/22/1990 | EP0313563B1 Process and device for measuring the position of wheels |
| 11/15/1990 | CA2011941A1 Ring laser gyroscope frames and method for making |
| 11/13/1990 | US4969743 Faraday magnet for the reduction of multi-oscillator bias thermal sensitivity |
| 11/13/1990 | US4969726 Ring laser gyro path-length-control mechanism |
| 11/13/1990 | CA1276274C Fiber optic rotation sensor utilizing high birefringence fiber and having reduced intensity type phase errors |
| 11/07/1990 | EP0222811B1 Frequency locking electromagnetic signals |
| 11/06/1990 | US4969157 Ring laser gyroscope with hollow cathode having frusto-ellipsoidal surface |
| 11/06/1990 | US4969017 Measuring device for the measurement, in a wide range, of a non-reciprocal phase shift generated in a ring interferometer, and measuring method |
| 11/06/1990 | US4968136 Ring laser gyro and magnetic mirror therefor |
| 10/30/1990 | CA1275722C Simplified readout optics for a ring laser apparatus |
| 10/25/1990 | DE3250014C2 Navigation system e.g. for tank |
| 10/24/1990 | EP0393987A2 Ring resonator gyro |
| 10/24/1990 | EP0393968A2 Fibre optic resonator interferometer gyroscope |