Abstract: A pulmonary inhaler includes a dual-action “child-proof” lock that requires more than one manual action to unlock the inhaler to allow the user to perform the dispensing action. For example, the user may press a small button on the back of the lower housing while rotating the upper housing with respect to the lower housing. These separate user actions performed simultaneously to unlock the inhale are is difficult for a child to perform accidentally. This rotation also moves an integral door that covers the mouthpiece aperture. The integral mouthpiece door, which prevents debris from getting inside the inhaler when it is locked, avoids the need for separate cap or tethered mouthpiece cover. The dual-action locking feature requires a minimal number of parts and provides an easily visible indication that the actuator is in the “locked” state or the “unlocked” state.

Abstract: A coal slurry fuel supply and purge system for a locomotive engines is disclosed which includes a slurry recirculation path, a stand-by path for circulating slurry during idle or states of the engine when slurry fuel in not required by the engine, and an engine header fluid path connected to the stand-by path, for supplying and purging slurry fuel to and from fuel injectors. A controller controls the actuation of valves to facilitate supply and purge of slurry to and from the fuel injectors. A method for supplying and purging coal slurry in a compression ignition engine is disclosed which includes controlling fluid flow devices and valves in a plurality of fluid paths to facilitate continuous slurry recirculation and supply and purge of or slurry based on the operating state of the engine.