AUTOMATIC INTERMITTENT AEROSOL DISPENSING VALVE

摘要

A valve assembly (20) can automatically dispense aerosol content from an aerosol container (22) at predetermined intervals without the use of electri c 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 (6 2) 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 preven ts 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.