Patent ID: 6866038

Claim:
A dispenser for a gaseous, gas borne or droplet substance contained in a source thereof, the dispenser including: a body with a mouthpiece; a junction in the body for the substance source; and a breath actuable valve, for controlling the release of the gas or liquid containing or comprising the substance, the valve comprising: a flexible tube for receiving the said gas or liquid, the tube extending from a valve inlet connected to the junction and having a portion which is kinkable for closure of the valve and movable to an open position in which the tube is un-kinked for opening of the valve; and an outlet member arranged for movement in the body on inhalation to un-kink the valve; the tube being kinked to an obturating extent when the outlet movable member is in a ready position and un-kinked when the outlet movable member is moved on inhalation for release of the gas or liquid; the dispenser also including: a sear to hold the outlet movable member in the ready position closing of the tube by kinking prior to inhalation and a breath actuatable flap arranged in the body for movement on inhalation to release the sear and allow the outlet movable member to move for release of the gas or liquid.