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 |
| 8033480 | Arrangement for fastening railroad rails to a sleeper Fastening for a rail and arrangement for fastening of rails The invention relates to a fastening for a rail for securing a rail (10) whose foot is resting on a concrete sleeper (16), comprising at least one elastic clip (20) having several legs ... | 10/11/2011 |
| 7674065 | Device for locking the final positions of moving switch points A device for locking end positions of switch parts, having two parts, relatively axially displaceable and positively coupled in at least one direction, including a tube and a rod guided within the tube, at least partially arranged in an outer tube. Locking members c... | 03/09/2010 |
| 7648080 | Rail fixing device A rail fixing device including a tensioning clamp extending from a holding element and removably arranged on a ribbed plate on which the rail base is mounted. The ribbed plate is placed on an elastic intermediate layer which is maintained in a required prestressed s... | 01/19/2010 |
| 7387280 | Points comprising a reinforced switch tongue blade In a switch including a main track and a branch track, wherein one rail of each track is each configured as a tongue rail and movable into abutment on the respective stock rail, at least one stock rail (1), in its region of abutment on the tongue rail (2 | 06/17/2008 |
| 7210636 | Profile transition rail and method for producing said rail In a transition rail (1) for the connection of rails having different rail cross sections (2, 3), the transition rail (1) comprises two transition zones (a,c), wherein in a first transition zone (c) the larger-height cross-sectional profile is r... | 05/01/2007 |
| 7191986 | Device for mechanically and electrically checking the switching device of a railway switch machine In a device for checking the operation of devices (4) used to displace movable switch parts (2, 3), in which the movable switch parts (2, 3) are connected with each other by a coupling rod (13), the coupling rod (13) is comprised o... | 03/20/2007 |
| 7178764 | Device for operating rail switches In a device for operating rail switches, in which a plurality of mutually coupled hydraulic operating devices are arranged in an offset manner in the longitudinal direction of the rails, the cylinder-piston units of the hydraulic operating devices are connected to b... | 02/20/2007 |
| 6945156 | Device for switching and locking moving points components The invention relates to a device for displacing and locking movable switch parts (1), comprising a hydraulic piston, which is formed by a rod (6) and cooperates, via coupling or locking members (8), with an axially displaceable sleeve (5... | 09/20/2005 |
| 6759855 | Device for monitoring and forecasting the probability of inductive proximity sensor failure In a device for the monitoring and the prognosis of the failure probability of inductive proximity sensors (1) for the monitoring of the position of movable switch rails or rail components, in which the proximity sensor (1) has at least one coil (5 | 07/06/2004 |
