Patent ID: 7503324

Claim:
A dry powder inhaler, comprising: a housing having a mouthpiece and a delivery passageway connected to the mouthpiece; a magazine positioned within the housing and including a plurality of reservoirs for holding doses of dry powder, the magazine being movable within the housing to sequentially position the reservoirs within the delivery passageway; a cover connected to the housing and selectively movable to open and close access to the mouthpiece; and a rake connected to the cover and extending into the housing, the rake being engageable with the magazine so that, upon movement of the cover to open access to the mouthpiece, the rake moves the magazine and causes one of the reservoirs to be positioned within the delivery passageway; wherein the magazine includes bores sealed with at least one layer of moisture resistant, air-tight material, and deployable pistons contained in the bores, and each of the pistons has at least one compartment holding powder medicament which is presented for inhalation upon the piston being pushed through the layer of moisture resistant, air-tight material.