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 |
| 7931041 | System and method for controlling liquid level in a vessel A system includes sensors configured to measure vessel parameters. A signal processing unit receives sensor output signals and generates a first, second, third, fourth, and fifth filtered output signals representative of liquid level, gas flow rate, feed-liquid flow... | 04/26/2011 |
| 7368040 | Apparatus for and method of heating fluid and distilling fluid A method and an apparatus for heating fluid with a gas heater and distilling fluid with the pilot light of the gas heater are disclosed. The apparatus for heating fluid and distilling fluid includes a main tank for containing fluid to be heated, a heater, adapted to... | 05/06/2008 |
| 6615931 | Continuous feed drilling system A continuous feed drilling system and controller includes a head assembly having first and second chucks synchronized to rotate at the same rotational velocity. The chucks are independently moveable within the head assembly and their positions are measure... | 09/09/2003 |
| 4759314 | Method of control of steam quality from a steam generator A method of controlling the steam quality leaving parallel circuits of once-through steam generators using untreated feedwater having high solids concentration wherein control valves in each circuit are actuated by signals generated by the electrical cond... | 07/26/1988 |
| 4569012 | Method and system for controlling fluid transportation in a pipe network Method and system for controlling fluid transportation in a pipe network are disclosed. Pressures and flow rates at a predetermined number of points in the pipe network which number is smaller than the number of demand nodes in the pipe network are detect... | 02/04/1986 |
