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 |
| 7182318 | Method and apparatus for removing and installing a differential of a vehicle A hoisting assembly that is adapted to be mounted to the frame of a vehicle where a hoisting device extends an attachment member such as a hook to connect to an engagement location of the differential where the hoisting assembly is positioned substantially verticall... | 02/27/2007 |
| 6615740 | Machine for transport of passengers and cargo An electrically powered vehicle transportation system utilizes a guideway with parallel enclosed rails. Each enclosed rail has an electrical bus bar for supplying power to vehicles on the guideway. The guideway will accommodate dual-mode vehicles that are... | 09/09/2003 |
| 4647101 | Assemblable freight wagon A freight wagon is assembled from a set of building blocks together forming a superstructure mounted on a skeletal underframe having at least one axial beam and an upper surface with a modular bearing pattern. The building blocks are selected from a set o... | 03/03/1987 |
| 4601360 | Beam and chain hoist for removing vehicle transmission A beam and chain hoist assembly is provided including a longitudinally extending support beam having longitudinally spaced bearing surfaces adapted to engage support portions of the cab of an overland vehicle. The support beam is bifurcated at its front e... | 07/22/1986 |
| 4348963 | Retractable bulkheads for railroad flat cars Retractable bulkheads for railroad flat cars which are normally in a vertical position spaced from one another on a railroad flat car for providing end to end supports for items stored on the flat cars is disclosed. The bulkheads are retractable to a fold... | 09/14/1982 |
| 4339148 | Apparatus for detachably connecting a removable frame to a vehicle frame A removable frame is detachably connected to a supporting frame by a connection having a plurality of spaced apart vertically extending sleeve-like members mounted on the removable frame. Upwardly projecting members are mounted at the periphery of the sup... | 07/13/1982 |
| 4294176 | Portable hoist frame The invention is an improved portable hoist frame for use in automotive and other type work that requires a frame from which to hang a hoist to lift automotive components and other objects. The portable frame consists of detachable elements for a knock-do... | 10/13/1981 |
| 4101158 | Convertible trailer for hauling grain and a harvesting machine The trailer converts from a hopper for hauling grain to an overwidth flatbed with tracks for carrying a harvesting machine. The side and front panels of the hopper fold to a horizontal position from the erected position. The rear panel of the hopper is re... | 07/18/1978 |
| 4018480 | Granular-floor supported cargo hauling trailer apparatus construction An improved trailer convertible to one position for hauling floor supported cargo and to one other position for hauling granular material. The trailer has a floor assembly including; a pair of center floor panels which are supported on the trailer frame a... | 04/19/1977 |
