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US 4,583,656 AGranted
Container with improved sealing lip
AssigneeVercon, Inc.
InventorDonald N. MacLaughlin
Life of this patent
Estimating the term…
Abstract
A container and preferably a thermoplastic container, is disclosed which offers an improved structure around the container top opening to allow better sealing of a crimped-on closure member.
Claims4
A container having a vertical side wall, a bottom closure, and a top rim, said top rim defining a top opening, said container further comprising:
- a seal rim formed on said top rim and having a stepped upper surface with a first radially inward located sealing surface, and a second radially outward sealing surface connected to said first sealing surface;
- said first and second sealing surfaces being separated by a vertical stepped portion arranged to form an annular recessed sealing area;
- wherein said first sealing surface forms the uppermost rim portion of said top rim and is generally defined by concentric, generally vertical surfaces separated by a generally horizontal surface;
- and said second sealing surface comprises a generally horizontal sealing surface merging with the outermost vertical surface of said first sealing surface, and a vertical outwardly projecting roll rim defining a lower inset portion adapted to receive a crimped top closure thereon.
1 more element
A sealed container having a generally vertical sidewall portion, a bottom closure, a top rim portion, and a deformable top cap sealingly enclosing said top portion;
- said container further comprising:
- a first sealing shoulder formed around said top rim and defining the uppermost portion of said container and further defining the top opening of said container;
- a second sealing shoulder on said top rim portion, located radially outward from said first sealing shoulder and downwardly displaced therefrom;
- an annular recess defined by the conjunction of said first and second shoulders;
- an outward projecting crimping shoulder formed on said second sealing shoulder;
- flowable adhesive means in said annular recess;
- and
- a closure cap over said container opening, adhered by said adhesive means to said top rim portion, and formed of a deformable material.
5 more elements
Dependencies are inferred from the claim text.