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US 5,630,522 AGranted
Dual contact plug seal for threaded closure
AssigneeRexam Closures, Inc.
InventorGary V. Montgomery
Life of this patent
Estimating the term…
Abstract
A threaded closure is provided for engaging a threaded container neck. The closure has a dual sealing plug which provides a primary continuous rotary seal and a secondary self centering seal with the inside surface of the container neck.
Claims3
A sealing closure for application to a threaded container neck comprising:
- a top;
- a cylindrical cap skirt depending from a periphery of said top, said cap skirt having an internal thread for engagement with said threaded container neck;
- and
- a dual sealing plug comprising an inner skirt depending from said top inwardly of said cap skirt for engaging an internal surface of said container neck, said plug including:
- an inwardly directed conical section depending from said cap top contacting said internal neck surface at a corner with an adjacent lip of said container neck creating a secondary seal;
- and
- a rotary seal portion extending downwardly from said conical section creating a continuous rotary seal with the internal neck surface.
4 more elements
Dependencies are inferred from the claim text.