Intermittent aerosol dispensing valve

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/16 (2006.01) B65D 83/44 (2006.01)

Patent

CA 2473899

A valve assembly can automatically dispense aerosol content from an aerosol container (12) at predetermined intervals without the use of electric power. A diaphragm (40) at least partially defines an accumulation chamber (36) that receives gas propellant from a portion of the can (12) during an accumulation phase. Once the internal pressure of the accumulation chamber (36) reaches a predetermined threshold, the diaphragm moves, carrying with it a seal so as to unseal an outlet channel (51), and thereby initiate a spray burst of the main active chemical. The diaphragm (40) assumes its original position when the pressure within the accumulation chamber (36) falls below a threshold pressure.

La présente invention concerne un ensemble valve qui peut automatiquement distribuer le contenu aérosol présent dans un contenant aérosol (12) à des intervalles prédéterminés sans utiliser pour cela de puissance électrique. Un diaphragme (40) définit au moins partiellement une chambre d'accumulation (36) qui reçoit du gaz propulseur en provenance d'une partie du récipient (12) pendant une phase d'accumulation. Lorsque la pression interne de la chambre d'accumulation (36) atteint un seuil prédéterminé, le diaphragme bouge, entraînant avec lui un joint de manière à dégager un passage de sortie (51) et à provoquer ainsi une salve de pulvérisation de l'agent chimique actif principal. Le diaphragme (40) revient à sa position de départ lorsque la pression dans la chambre d'accumulation (36) chute au-dessous d'une pression seuil.

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