Closure cap and container
AssigneeJohn Dale Limited
InventorThomas Duncan Brownbill
Life of this patent
Estimating the term…
Abstract
A closure for a container characterized by a crown and a depending skirt, retaining means provided on the skirt adapted to cooperate with corresponding means on a container to retain the closure about a neck of the container defining a dispensing opening thereof, a flexible annular sealing ring extending from an internal surface of the closure adapted to engage in sealing relationship with the container neck, a sealing ring support adapted to assist said ring into sealing engagement with the container and means for permitting pressure of the container contents to act upon the sealing ring to urge the ring into sealing engagement with the neck of the container to which the closure is applied.
Claims6
A closure cap in combination with a container which has a neck provided with a dispensing opening, said cap comprising
- a crown and an annular skirt depending from the crown, means on the skirt securing the cap to the container neck with the crown disposed across said opening,
- a flexible annular sealing ring integral with the cap and inclined inwardly towards the axis of the cap, said ring having an annular extremity in sealing contact with the top of said container around said opening, and
- a segmented support ring disposed on the crown within the space between the sealing ring and the inner surface of the crown whereby the sealing ring is pressed thereagainst when the sealing ring engages the container, said segmented ring permitting fluid under pressure to escape from the container into the space between the sealing ring and the crown where it is confined and urges the sealing ring against the container.
Dependencies are inferred from the claim text.