Patent ID: 6779694
Filing Date: 2004-08-24
Classification: B65D

Abstract:
A closure for a container for a liquid, comprising:a base collar engagable with the container and having an outlet aperture for dispensing the liquid and spaced therefrom at least one vent aperture of a small size and located by an offset distance which is within a predetermined range away from the outlet aperture with the offset distance being selected to seal the vent aperture by surface tension while the cap remains open so that the surface tension of the liquid can block the vent aperture, a primary liquid passageway extending through the base collar to the outlet aperture for dispensing liquid through the outlet aperture, and a secondary liquid passageway at least partly separate from the primary liquid passageway and extending through the base collar to the vent aperture for conveying the liquid from the container directly into contact with the vent aperture, a cap movable on the base collar between at least open and closed positions, a stop surface associated with one of the base collar and the cap and relatively movable to open and obstruct at least the primary liquid passageway as the cap is moved respectively between the open and closed positions, whereby the secondary liquid passageway permits air to enter the base collar to vent the closure for dispensing the liquid when the cap is in the open position and also seals the vent aperture by the surface tension of the liquid when dispensing of the liquid is to cease.