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 |
| 8302439 | Lock pin rotational position setting key and method of use A pin setting key for setting rotational orientations of pins of a lock. The key includes a bow portion and a blade portion for inserting into a keyway. The blade portion has a longitudinal axis and a bow end and a tip end, with a plurality of bitting positions loca... | 11/06/2012 |
| 7963135 | System for obstructing movement of lock pins A system for obstructing movement of a pin in a pin tumbler lock is disclosed. The system includes a pin movable in a bore in a plug of a pin tumbler lock, and the pin has a channel formed thereon for receiving a portion of a sidebar of the lock. The system further ... | 06/21/2011 |
| 7775074 | System for obstructing movement of lock pins A system for obstructing movement of a pin in a pin tumbler lock is disclosed. The system includes a pin movable in a bore in a plug of a pin tumbler lock, and the pin has a channel formed thereon for receiving a portion of a sidebar of the lock. The system further ... | 08/17/2010 |
| 7441431 | High security pin tumbler lock A pin tumbler lock of a first embodiment includes a shell containing top pins; and a plug, rotatable within the shell, containing standard bottom pins, and a shorter bottom pin, set back from the face of the plug. A tubular key has bitings corresponding to the stand... | 10/28/2008 |
| 5277042 | Automotive, steering wheel anti-theft device A mechanical anti-theft device of the type applied to the steering wheel of an automotive vehicle which automatically ratchets to it's applied position without necessity of key lock actuation is provided with several security enhancing features which cumu... | 01/11/1994 |
