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 |
| 4958287 | Electronic control system for automatic vehicle transmission An electronic control system for controlling an automatic transmission determines a gear position based on vehicle speed data immediately before a power supply is cut off. The gear position is determined during a transient period occurring after the elect... | 09/18/1990 |
| 4858131 | Clutch target position control system A clutch target position control system of an engine includes a clutch actuator for controlling a clutch stroke, a sensor for detecting a parameter corresponding to an accelerator pedal depression amount, an engine revolution sensor for detecting a revolu... | 08/15/1989 |
| 4843915 | Electronic control system for automatic vehicle transmission with means for determining abnormal operation of vehicle speed sensor An electronic control system for controlling an automatic transmission mounted on a vehicle determines whether a vehicle speed sensor is abnormal or not when the transmission gears are in a neutral gear position. If the vehicle speed sensor is abnormal, t... | 07/04/1989 |
| 4773370 | Fuel control system for internal combustion engine The number of steps required for a step motor to reach a target load is computed by dividing in proportion the number of steps required for the step motor to move a fuel metering member to move from an idle position to a full-load position by a ratio betw... | 09/27/1988 |
