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 |
| 7673640 | Tiltable underarm support mechanism and crutch-like mobility assist device using same A crutch-like mobility assist device includes a vertical support assembly, a footer assembly attached to a lower connection member of the vertical support assembly, and a tiltable underarm support mechanism connected to an upper connection member of the vertical sup... | 03/09/2010 |
| 7581556 | Crutch-like mobility assist device with rotatable footer assembly A crutch-like mobility assist device includes a vertical support assembly, an underarm support mechanism, and a rotatable footer assembly, the rotatable footer assembly including an elongated ground-engaging foot pad, attachment members connected to the foot pad and... | 09/01/2009 |
