| 摘要 |
A dispenser for a gaseous, gas borne or droplet substance contained in a source thereof, the dispenser including: a body (1) with a mouthpiece; (2) a junction member in the body for the substance source; and a breath actuable valve, (8) 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 member and having a portion (21) 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 a member arranged for movement in the body by inhalation to un-kink the valve; the tube being kinked to an obturating extent when the movable member is in a ready position and un-kinked when the movable member is moved on inhalation for release of the gas or liquid; wherein: the movable member is or includes a flap (7) arranged in the body for action of breath on it on inhalation; the junction member,the flexible tube and the movable flap are a single injection moulding of plastics material; and the movable flap is pivotally connected to the junction member.
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