Patent ID: 9284112
Filing Date: 2016-03-15
CPC Classification: A61L,B05B,B65D

Claim Text:
1. A valving arrangement for an aerosol spray device comprising a pressurised or pressurisable container holding a liquid to be discharged from the device by a propellant, the valving arrangement comprising: a valve stem moveable from a first limit position to a second limit position to effect spray discharge from the device; a flow conduit for supplying fluid from the container to a spray outlet region, said flow conduit being provided in said valve stem and having at least one first liquid inlet for liquid from the container and at least one second gas inlet at the same distance along said flow conduit as said first liquid inlet(s) or downstream of said first liquid inlet(s) for propellant gas from a headspace of the container, wherein each of said first liquid inlet(s) and said second gas inlet(s) is provided in said valve stem; and a seal, formed from an upper gasket and a lower gasket, wherein the upper gasket is configured to close both the first liquid inlet(s) and the second gas inlet(s) when the valve stem is in its first limit position; wherein movement of the valve stem from its first to its second limit position opens said first liquid inlet(s) and said second gas inlet(s) to respectively cause gas and liquid to be introduced separately into the flow conduit to thereby cause a bubble laden flow to be created therein and movement of the valve stem back to its first limit position closes said first liquid inlet(s) and said second gas inlet(s).