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 |
| 7262351 | Piano hammer A piano hammer comprises an elongate hammer head having a nose portion defining side surfaces and a felt covering extending about the nose portion with tail portions of the felt covering affixed to the side surfaces. The felt covering defines a substantially ellipti... | 08/28/2007 |
| 7256337 | Combination guitar pick and shoulder strap lock A one piece combination guitar string pick and shoulder strap lock that engages and retains a guitar shoulder strap upon one or more anchor posts affixed to the guitar. The combination pick and strap lock is not a part of the shoulder strap, and is used after the sh... | 08/14/2007 |
| 7196257 | Computer aided piano voicing The present invention discloses a method for determining an optimal piano hammer felt voicing technique for voicing an unvoiced tone in a piano so as to achieve a predetermined standard of tonal quality associated with a given voiced tone using a computer program. T... | 03/27/2007 |
| 5311805 | Voice scribe A power-driven voicing tool simultaneously inserts into and withdraws from the felt of a piano hammer, needles to raise a nap thereon. A row of four needles is driven by two circularly moved cam surfaces on the ends of an assembly rotatable by a variable ... | 05/17/1994 |
