Spray generator
AssigneeThe Technology Partnership PLC
InventorsRobert Gordon Maurice Selby, Martin Scott Goodchild
Life of this patent
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Abstract
A spray generator (10) including: a membrane (40) having a perforate portion through which, in use, a fluid is caused to flow when the membrane (40) is vibrated; an electronically-driven or a piezoelectrically driven actuator for vibrating the membrane (40); a chamber (18) for storing fluid for supply to a surface of the membrane (40); and a sealing element (13) located in and movable within the chamber (18) between a first position in which fluid flow from the chamber (18) through the membrane (40) is prevented and a second position in which fluid flow from the chamber (18) through the membrane (40) is allowed.
Claims13
A spray generator comprising:
- a membrane having a perforate portion through which, in use, a fluid is caused to flow when the membrane is vibrated;
- an electronically-driven or a piezoelectrically driven actuator for vibrating the membrane;
- a chamber for storing fluid for supply to a surface of the membrane;
- a sealing element located in and movable within the chamber between a first position in which the sealing element contacts the membrane or actuator to prevent fluid flow from the chamber through the membrane and a second position in which fluid flow from the chamber through the membrane is allowed;
- and
- wherein the area of the back of the sealing element that is subjected to a chamber pressure is greater than the area of the front of the sealing element that is subjected to the chamber pressure when the sealing element is in the first position.
Dependencies are inferred from the claim text.