Patent ID: 7322352

Claim:
A dry powder inhaler for administering a dose of a medicament, said inhaler comprising: a reservoir holding said medicament; an air channel assembly engaged with, and movable relatively to, said reservoir for receiving said dose of medicament upon said relative motion; and a counter for counting a number of doses dispensed from said reservoir or that can still be delivered before the inhaler is considered empty said counter comprising a first indicator member which moves one increment in response to said relative motion, and a second indicator member which moves intermittently in response to motion of said first indicator member, a rotatory intermittent drive transfer mechanism being positioned between and engageable with said first and second indicator members, said first indicator member driving said rotatory intermittent drive transfer mechanism, said rotatory intermittent drive transfer mechanism driving said second indicator member intermittently upon motion of said first indicator member, said first and second indicator members having indicia thereon for displaying the number of said doses dispensed from said reservoir or that can still be delivered before the inhaler is considered empty.