with at least one of the contents stored in a chamber associated with the dispensing head, e.g. for mixing during dispensing

Full Title

Containers or packages with special means for dispensing contents (dispensing means incorporated in closures B65D47/00) > Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant > Dispensing two or more contents > initially separated and subsequently mixed > with at least one of the contents stored in a chamber associated with the dispensing head, e.g. for mixing during dispensing