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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6602793 | Pre-clean chamber An improved pre-clean chamber of a semiconductor processing system minimizes the generation of particulates during processing, thereby decreasing contamination levels that can adversely affect plasma vapor deposition film properties while also decreasing ... | 08/05/2003 |
| 4545304 | Articulated railroad car An articulated railroad car including a plurality of platforms each supported by a single axle wheel truck at each end. The platforms are connected to rigid drawbars which allow relative motion therebetween in both horizontal and vertical directions. The ... | 10/08/1985 |
| 4445617 | Striker for a railway coupler A striker for a railway vehicle comprises a casting having an endless rib projecting outwardly from each side wall to reinforce a key slot for a draft key. The endless ribs present continuous surfaces for welding the striker to a sill of a railway vehicle... | 05/01/1984 |
| 4422557 | Aligning drawbar A drawbar assembly comprising a drawbar and a buffing block device constructed and arranged so as to provide a turning moment which tends to align the horizontally displaced adjacent ends of the railway vehicle to which the drawbar is connected when said ... | 12/27/1983 |
| 4261471 | Fabricated backstop for railway cars A fabricated backstop for an end-of car cushioning unit in a railway car. The backstop is composed of two plate members or pieces which are welded separately to the inside of a center sill. One backstop piece is a generally U-shaped vertical plate member ... | 04/14/1981 |
