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| Number | Title | Issue Date |
| 4924593 | Method for aligning a two-axis platform A two-axis platform comprises an azimuth gimbal rotatable about an azimuth axis. In the azimuth gimbal an inner gimbal is mounted about an axis. A two-axis gyro having input axes and a spin axis is located in the inner gimbal. The spin axis is always main... | 05/15/1990 |
| 4749926 | Automatic trim tab control system An automatic trim control system designed to be used on power boats equipped with electric or hydraulic actuated trim tabs is disclosed. The unit senses out of trim conditions in two planes (pitch and roll) and transmits control signals to the electro-mec... | 06/07/1988 |
| 4218822 | Visual-display device with error correction In order to correct errors in the reading of a graduated scale, especially on a compass card driven by a damped gyroscopic system, the scale is juxtaposed with a block having slits simultaneously alignable with different scale graduations and illuminable ... | 08/26/1980 |
| 4010549 | All solid state analog gyromagnetic compass system An all solid state gyromagnetic compass system operable in the slaved, compass and free gyro modes wherein magnetic compass error rates, fast or slow slaving rates, gyro drift rates, earth's rate and set heading rates are all produced by means of a solid ... | 03/08/1977 |
