"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7543796 | High flow calibration test point A high flow calibration test point has entry, inlet, and outlet ports and a spring-biased plunger that in one position provides communication between the entry port and both the inlet and outlet ports, in another position provides communication between the entry por... | 06/09/2009 |
| 7520574 | Pneumatic emergency brake release timer A pneumatic emergency brake release timer comprises a high capacity transfer valve, a timing reservoir in communication with the pilot port of the high capacity transfer valve, the check valve and choke circuit providing parallel connections between the main source ... | 04/21/2009 |
| 7472011 | Brake interface module A brake interface module for an electronic air brake (EAB) or a magnet valve that incorporates positive train control digital commands with additional fail-safe, discrete train control spare inputs into a single, fail safe output via redundant power supplies. The br... | 12/30/2008 |
| 7398140 | Operator warning system and method for improving locomotive operator vigilance Provided is an operator warning system for use in connection with a locomotive having a horn system with a horn activation actuator and a horn device for producing a noise. The operator warning system includes an onboard computer system with a database having grade ... | 07/08/2008 |
| 7383593 | Quiet, low water volume toilet A toilet assembly is provided having a bowl assembly, a fragmentation passage, a jet assembly, and a water system. The bowl assembly has a wastewater inlet and a waste water outlet. The fragmentation passage has a passage, an inlet, and an outlet. The fragmentation ... | 06/10/2008 |
| 7374252 | Wheel slip brake assurance module A wheel slip assurance module comprises a device for disabling the wheel slip valve, a timing reservoir in communication with the disabling device, and a check valve and choke circuit providing parallel connections between the output of the wheel slip valve and the ... | 05/20/2008 |
| D562104 | Modular transit assist handle | 02/19/2008 |
| 7301433 | Fuse and truck cable assembly for a rail vehicle third rail current collector A fuse and truck cable assembly for a rail vehicle third rail current collector comprising a truck cable, a cable-engaging element, a fuse canister, a canister closure, a fuse contact element, and a flexible gland arranged so that the fuse can be replaced in the fus... | 11/27/2007 |
| 7222922 | Three-state magnet valve A three-state magnet valve for control of fluid flow from a source of fluid pressure. The three-state magnet valve has an application pilot solenoid electrically connectable to a control module, and an application valve for connecting the source of fluid pressure an... | 05/29/2007 |
| 7210268 | Unlock mechanism for a rotary door operator An unlock mechanism for a rotary door operator of a transit vehicle includes a pivotally disposed unlock member adapted for rotating a lock member into an unlock position and activating a valve for discharging the fluid pressure from the drive cylinder to enable man... | 05/01/2007 |
| 7144090 | China type 120 brake valve ECP manifold A China Type 120 Brake Valve ECP Manifold includes a manifold block in fluid communication with at least one source of fluid pressure for communicating fluid pressure signals. A plurality of apertures formed through such manifold block allows fluid communication the... | 12/05/2006 |
| 7017974 | Rotary door operator A cover arrangement for a rotary door operator of a transit vehicle includes a cover with a cavity for encasing the components of the rotary door operator and with an aperture for engaging an elastomer seal coupled around an output shaft of the rotary door operator.... | 03/28/2006 |
| 6839664 | Electrically controlled pneumatic end of train pneumatic emulation system An electronically controlled pneumatic (ECP) end of train (EOT) pneumatic emulation system allows fill train operation of standalone ECP unit trains, even with non-ECP equipped locomotives. The emulation system is based on close integration with the EOT system and a... | 01/04/2005 |