Articles
AssigneeReckitt Benckiser (UK) Limited
InventorMalcolm McKechnie
Life of this patent
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Abstract
An article for sequential dispensing of vapours, notably evaporable fragrances, comprises separated first and second liquids (22, 24). Liquid (22) issues first. Its evaporation may be assisted by a wick (26). The simultaneous evaporation of the second liquid is prevented by an intermediate liquid phase (20). As liquid (22) issues the liquid levels change and there comes a point at which the intermediate phase can no longer prevent the second liquid (24) from flowing past it, to the region from which it can be evaporated. Solids, especially gels, may be employed instead of liquids (22, 24).
Claims21
An article for the release of a plurality of vapours, the article containing:
- a first liquid or solid phase comprising a first vaporisable agent;
- a second liquid or solid phase comprising a second vaporisable agent;
- and a third phase which constitutes a barrier between the first and second phases;
- wherein
- the first and second phases are such that if placed in contact with each other one phase or one or more component thereof would mix or migrate into the other phase wherein the article comprises an enclosure having a partition wall between the first phase and the second phase at the commencement of use of the article, the partition wall terminating above the bottom wall of the enclosure the third phase being at the bottom of the enclosure, wherein the lower edge of the partition wall extends into the third phase at the commencement of use of the article;
- wherein the commencement of vaporisation of the second phase is delayed by the third phase and wherein when the first phase has issued from the article in use, the third phase is exposed to the air and can shrink whereby the second phase can flow around the third phase and then evaporate from the article.
An article for the release of a plurality of vapours, the article containing:
- a first liquid or solid phase comprising a first vaporisable agent;
- a second liquid or solid phase comprising a second vaporisable agent;
- and a third phase which constitutes a barrier between the first and second phases;
- wherein the first and second phases are such that if placed in contact with each other one phase or one or more component thereof would mix or migrate into the other phase wherein the article comprises an enclosure having two upright limbs connected together, wherein at the commencement of use the first phase is located in one limb the second phase is located in the other limb and the third phase is located therebetween such that commencement of the vaporisation of the second phase is delayed by the third phase;
- such that, in use, initially vaporisation of the first agent commences, and subsequently vaporisation of the second agent commences, the commencement of vaporisation of the second agent being delayed by the third phase.
Dependencies are inferred from the claim text.