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 |
| 8146694 | Swappable modulated battery packs system for electrically driven vehicle A system for swappable battery pack for electric vehicle is disclosed. Each battery pack units is comprising a battery compartment housing, a battery carrier rack which is slidable within the battery compartment housing via at least one linear actuator. The battery ... | 04/03/2012 |
| 8101905 | Infrared sensor calibration system and method A calibration system for an infrared imaging system includes an infrared sensor having a sensor model for imaging a target having a target spectral signature. The infrared imaging system includes an atmospheric model having atmospheric spectral values. The calibrati... | 01/24/2012 |
| 8087617 | Retractable nacelle chine A retractable chine assembly includes at least one chine which is hingebly mountable to a surface such as of an aircraft having a wing. The chine is preferably configured to be movable between stowed and deployed positions. The aircraft may include an engine nacelle... | 01/03/2012 |
| 8087326 | Low profile wrench and method A member may be rotated by engaging the member with a drive element and rotating the drive element in a single direction such that rotation in an opposite direction is prevented. ... | 01/03/2012 |
| 8079507 | Gimballing roller device for friction stir welding method A friction stir welding (FSW) apparatus has an FSW tool adapted for joining work pieces supportable against a backing anvil. The FSW apparatus comprises a pair of clamping rollers maintained in substantially perpendicular relationship to the backing anvil as the FSW... | 12/20/2011 |
| 8074694 | Stringer transition method A stringer comprises a base portion and first and second webs extending outwardly from the base portion. The orientation of at least one of the first and second webs may transition from a first angle to a second angle within an angle transition zone. ... | 12/13/2011 |
| 8066029 | Persuasive environmental recovery system A sewer backup alarm and overflow prevention device eliminates raw sewage spills by preventing pressure buildup in sewer drains. One or more sewage level sensors may be coupled to an alarm and/or to an automatic water main shut-off valve. The level sensor may detect... | 11/29/2011 |
| 7404497 | Dual container system and method of manufacturing the same There is provided a container system adapted to withstand a single impact or repeated impacts. The container system features a first container having a first container body. The container system further features a second container which has a second container body. ... | 07/29/2008 |
