Patent ID: 8887722

Claim:
An inhaler, comprising: an inhaler housing; a dose container disk having inner and outer perimeters mounted in the inhaler housing, the dose container disk having a plurality of circumferentially spaced apart dose containers having flexible floor and ceiling sealants attached to the dose container disk holding dry powder therebetween, wherein the dose container disk includes a first row of circumferentially spaced apart apertures at a first radius and a second row of circumferentially spaced apart apertures at a second radius so that the first and second rows are concentric with respect to a center of the disk; and a piercer carriage with a piercer mounted in the inhaler housing, the piercer carriage being in communication with a resilient member that radially biases the piercer carriage to radially travel to align the piercer with an underlying or overlying dose container, wherein the piercer carriage is configured to serially place the piercer over or under a dose container on the first row then over or under a dose container on the second row whereby the piercer automatically travels sequentially back and forth to alternate between rows and move up or down to pierce the upper and lower sealants residing over and under a respective dose container in the first row, then pierce the sealants residing over and under a dose container in the second row.