Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 3998411 | Speed overshoot correction system A system for compensating for certain speed overshoot problems encountered in large instrument-controlled aircraft during long-term deceleration from high speeds, such as may be encountered in preparation for descent to landing approach from cruise condit... | 12/21/1976 |
| 3979090 | Velocity damped erection system for stable gyroscopic attitude and heading reference apparatus An improved second order gyroscopic attitude and heading reference system including separate variable time constant accelerometer integrators for independently controlling the velocity error signals associated with respective east and north acceleration s... | 09/07/1976 |
| 3948096 | Apparatus for computing the acceleration of an aircraft along its flight path Apparatus for providing a measure of the acceleration of an aircraft along its flight path derived from computations involving inertial measurements of longitudinal and normal accelerations of the aircraft relative to the direction of the earth's "g" fiel... | 04/06/1976 |
