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 |
| 6797401 | Electromagnetic wave absorbing materials Electromagnetic wave absorbing materials comprising magnetic alloy particles and an insulating matrix are disclosed. The magnetic alloy particles comprise a transition metal such as Fe and/or Co, and further comprise at least one refractory metal such as Ti, V, Cr, ... | 09/28/2004 |
| 5593112 | Nacelle air pump for vector nozzles for aircraft The nacelle of the aircraft is purged and the sidewall of the vector nozzles of the gas turbine engine in the nacelle is cooled by utilizing the engine fan air to drive ejector pumps mounted in series flow relationship, a rectangular mixing zone and a dif... | 01/14/1997 |
| 4883410 | Fuel supply systems A liquid fuel pump arrangement for delivering fuel to an engine comprises a liquid-ring pump including a motor driven bladed impeller rotor which is located eccentrically within a cylindrical bore of a chamber forming part of a hollow pump body structure.... | 11/28/1989 |
| 4431377 | Compressor with pump recycling for isotopic separation through gaseous scattering A compressor which compresses a principal flow at low pressure and recompses a secondary flow at medium pressure to deliver a common flow at high pressure. The compressor includes, in addition to compression devices for the principal flow, static devices... | 02/14/1984 |
| 4365938 | Modular low head high volume water pump and aquaculture system A water pump system having a float and underwater intake with discharge into an increasingly sized series of consecutive pipes, open to the water body, for entraining additional water with that expelled from the discharge to provide a high volume, low rat... | 12/28/1982 |
