Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7384017 | Retractable gate A retractable gate comprising a movable arm gate having multiple sections which nest or telescope into each other when parked (e.g. upright), and extends into a full length blocking position as it is deployed. The gate arm sections are deployed by the movement of on... | 06/10/2008 |
| 7195419 | Net and mat An energy absorbing system. The energy absorbing system spanning a roadway and including a net spanning the roadway, the net having a connecting member coupled to a top member, a middle member and a bottom member, and a mat arranged on the roadway, having a pluralit... | 03/27/2007 |
| 7014388 | Anti-vehicle security system An anti-vehicle security system that includes a truss assembly formed with a plurality of monolithic stanchions. A container having a hinged door is fixed on the truss assembly. The system also includes two spaced-apart guides that extend from within the container t... | 03/21/2006 |
| 6997417 | Apparatus for controlling traffic flow along a pathway A railroad crossing gate with a gate assembly. An extendible member slides within an outer member with minimal friction. When the gate is in its open position, gravity retracts the extendible member to hollow member. When the gate is in its blocking position, gravit... | 02/14/2006 |
| 6926462 | Retractable road barrier A safety barrier for road use comprises a barrier element which can be displaced between an operative position, above the road surface, and an inoperative position, in which it does not substantially project above the road surface. Preferably provided is a number of... | 08/09/2005 |
| 6704626 | Logistics system and method with position control A logistics system and method are mounted on a vehicle and utilize vehicle position control for logistics operations, such as loading and unloading material to and from the vehicle. The position control can be GPS-based and/or based on linear movement of ... | 03/09/2004 |
| 6526339 | GPS controlled multiple source material application A GPS controlled multiple source material application or ballast spreading system includes tracking the position of a plurality of ballast hopper cars using GPS derived coordinates and controlling the opening of multiple ballast doors to spread ballast on... | 02/25/2003 |
| 6227523 | Barrier device for preventing passage A barrier device for preventing passage, having a simple construction and capable of being lowered into a shallow trench. The barrier device, preferably constructed as a gate for preventing passage to and from buildings or property, comprises a moveable f... | 05/08/2001 |
| 6158696 | Railroad accident prevention system with ground-retractable vehicle barrier An apparatus that prevents motorists from crossing railroad tracks, when the warning gates are down during approaching of a train consists, of a plurality of tire-piercing cogs which are retracted from the ground when the railroad crossing gate is closed.... | 12/12/2000 |
| 6105905 | Railway gate system A railway gate system comprising a railway station having an elevated platform area for passengers to stand and a recessed area with a track and a train movable therealong. A gate has a continuous upper restraining rail along its length. A plurality of cy... | 08/22/2000 |
| 5992800 | Railroad crossing arm breakaway connector The pivot pin (26) connects the gate arm (14) and adapter (28) to the extension plate (24), and cross pin (32) supports the supporting pins (34) unless shear pins (50) are removed or destroyed. When the shear pins are removed and the gate arm moves horizo... | 11/30/1999 |
| 5924652 | Island presence detected A reliable and consistent electrical contact path between the rails of a section of railroad track established by the shunting effect of the wheels and axles of a train is ensured by applying time-spaced, short duration electrical pulses to the rails at a... | 07/20/1999 |
| 5464177 | Energy absorbing impact barrier An energy absorbing motor vehicle barrier includes a collapsible energy absorption assembly which is stored in a vault in the ground. Upon deployment, the energy absorption apparatus is lifted out of its vault, where it thereby expands and deploys. The en... | 11/07/1995 |
| 5029780 | Multi-frequency railroad grade crossing termination shunt assembly A multi-frequency shunt is provided for use between the rails of a railroad track to define the approach distance for a railroad crossing using a constant warning time or motion detection device. The shunt includes a housing with a PC board having rail te... | 07/09/1991 |
| 4942395 | Railroad grade crossing motorist warning system A three-piece, compact wireless railroad grade crossing motorist warning device comprising: a locomotive mounted transceiver which simultaneously communicates (upon close proximity) with a similar transceiver mounted at railroad grade crossing, and motor ... | 07/17/1990 |
| 4369943 | Model train crossing gate A detector circuit for a model railroad employs two pairs of magnetically-operated relays positioned on either side of a grade crossing along a set of tracks. In addition a single magnetically-operated relay is located at the grade crossing and is given a... | 01/25/1983 |
