Self-venting closure
AssigneeSilgan Dispensing Systems Slatersville LLC
InventorsJames E. Scotton, Patrick J. Brannon
Life of this patent
Estimating the term…
Abstract
A self-venting closure assembly includes a closure body having a deck with a peripheral mounting skirt and an annular seal on an underside of the deck adjacent to the peripheral mounting skirt, further including a circular valve seat within the center portion of the deck, and a plurality of vent openings circumferentially spaced within the valve seat, all surrounded by an annular spillover wall. An elastomeric umbrella valve is centrally mounted to the deck and has a frustoconical valve flap arranged on an underside of the valve seat. The valve flap cooperates with the vent openings to normally seal the vent openings but permits air to flow into an interior of the closure body when a vacuum is applied to an interior of the container on which the closure is mounted.
Claims17
A closure assembly comprising:
- a closure body having
- a deck with a peripheral mounting skirt,
- an annular seal on an underside of the deck adjacent to the peripheral mounting skirt, wherein the annular seal comprises an annular flat sealing rib extending downwardly from the underside of the deck and an annular gasket received adjacent to the underside of the deck and in engagement with the annular flat sealing rib wherein an upwardly facing surface of the annular gasket is received in engaged facing relation with a downwardly facing surface of the annular flat sealing rib,
- a valve seat within the deck,
- at least one vent opening disposed within the valve seat,
- a valve land area on an underside of the valve seat surrounding the at least one vent opening, and
- an annular spillover wall extending downwardly from the underside of the valve seat and surrounding the valve land area;
- and
- an elastomeric umbrella valve mounted to the deck and having a valve flap arranged on the underside of the valve seat in sealing engagement with the valve land area, said valve flap cooperating with said at least one vent opening to normally seal said at least one vent opening but permitting air to flow into an interior of the closure body.
Dependencies are inferred from the claim text.