Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Moving solid surface engages material to be sprayed
Patent
1993-03-01
1994-09-27
Grant, William
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Moving solid surface engages material to be sprayed
239357, 239361, 239369, 239405, 222631, 222635, B05B 724
Patent
active
053501160
ABSTRACT:
An actuator for a liquid spray pump is provided with a skirt which co-operates with a body of the pump to compress a volume of air during pump actuation. Air compressed by this action is ejected from an air injection channel in the vicinity of a liquid spray emerging from a first nozzle defined by the actuator. A second nozzle is connected to the actuator externally of the first nozzle to define an air gap therebetween and the air ejection channel communicates with the air gap such that in use both the liquid spray and the compressed air are dispensed through the second nozzle aperture. Primarily intended for dispensing water based products, the effect of the compressed air is to assist in the evaporation of water contained in the liquid or any other volatile liquid dissolved in a liquid product to be dispensed in aerosol form.
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"A Two Phase Flow Mechanical Spray Pump: A Possible Alternative to Propellant Driven MDIs", Reinhold Jaeger-Waldau, Journal of Biopharmaceutical Sciences, vol. 3, pp. 77-84.
Bespak plc
Grant William
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