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| Number | Title | Issue Date |
| 7104365 | Brake actuator indicator An indicator device indicating the travel of an air bag-type brake actuator when brakes are applied includes a stationary indicator plate having a cut out extending alongside the path of travel of the actuator. The cut out includes side edges positioned at acceptabl... | 09/12/2006 |
| 6282463 | Method of selecting pneumatic devices A method of selecting pneumatic devices that satisfy specified load, speed and strength conditions to construct a pneumatic system. Data concerning pneumatic actuators, solenoid-controlled selector valves, drive controllers, pipes, pipe joints and exhaust... | 08/28/2001 |
| 5536076 | End of train railroad air hose An end of train railroad air hose having audible warning device which is powered by air from the air brake line and is actuated by the operator from the end of the train. The audible warning device may be located remotely from the operator via an elongate... | 07/16/1996 |
| 4081027 | Shear rams for hydrogen sulfide service Shear rams shearing drill pipe passing through with blowout preventers encountering hydrogen sulfide are disclosed. The ram bodies are formed of an alloy having an upper hardness level of about Rc22 and the shearing blade and drill string engaging surface... | 03/28/1978 |
| 3948083 | Fluid pressure apparatus A fluid pressure comparison apparatus including a pressure responsive member displaceable by the difference between two pressure sources being compared to vent fluid from one of the sources, when its pressure is greater than the other, through a port whos... | 04/06/1976 |
