Automatic intermittent aerosol dispensing valve

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/16 (2006.01)

Patent

CA 2464720

A valve assembly (20) can automatically dispense aerosol content from an aerosol container (22) at predetermined intervals without the use of electric power. A diaphragm (58) at least partially defines an accumulation chamber (80) that receives aerosol content from the can (22) during an accumulation phase. Once the internal pressure of the accumulation chamber (80) reaches a predetermined threshold, the diaphragm (58) moves, carrying with it a leg (62) so as to unseal a valve stem (68), and thereby initiate a spray burst. The diaphragm (58) assumes its original position when the pressure within the accumulation chamber (80) falls below a threshold pressure. A barrier prevents the aerosol container (22) from resupplying the accumulation chamber (80) at a high rate during the spray phase, preferably due to a textured interface between the barrier and a passageway in which it is housed.

L'invention concerne un ensemble soupape (20) permettant de distribuer automatiquement un contenu d'aérosol d'un contenant (22) d'aérosol à intervalles prédéterminés sans utilisation d'une alimentation électrique. Une membrane (58) définit au moins partiellement une chambre d'accumulation (80) qui reçoit le contenu d'aérosol provenant du contenant (22) pendant une phase d'accumulation. Une fois la pression interne de la chambre d'accumulation (80) atteint un seuil prédéterminé, la membrane (58) se déplace, transportant avec elle un pied (62) de façon à ouvrir la tige (68) de la soupape et amorcer la rafale de pulvérisation. La membrane (58) revient à sa position initiale lorsque la pression dans la chambre d'accumulation (80) tombe au-dessous d'une pression seuil. Une barrière empêche le contenant (22) d'aérosol de réalimenter la chambre d'accumulation (80) à un débit élevé pendant la phase de pulvérisation, de préférence grâce à une interface texturée entre la barrière et un passage où elle est logée.

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