A dry powder inhaler has a slider for incrementally advancing a blister disk, to provide successive doses of a dry powder pharmaceutical. A blister disk is rotatably supported on a spindle on a deck plate of the inhaler. A powder port, an advancing slot, and a lifter slot extend through the deck plate....http://www.google.es/patents/US6116238?utm_source=gb-gplus-sharePatente US6116238 - Dry powder inhaler