US4583656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with improved sealing lip
Assignee: Packaging Resources Inc
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Filing: 1985-06-17
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Granted: 1986-04-22
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Expires: 2005-06-17
Abstract
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.
Inventors
- 👤 Donald N. MacLaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/10; B65D41/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
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.
Claim 2
Dependent Claim
152 words
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.
Claim 3
Dependent Claim
132 words
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.
Claim 4
Dependent Claim
132 words
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.
Claim 5
Dependent Claim
24 words
The sealed container of claim 2 wherein said closure cap is formed of a soft metal foil and is crimped over said crimping shoulder.
Claim 6
Dependent Claim
25 words
The sealed container of claim 3 wherein said container is thereformed from a thermoplastic material and said bottom closure is friction-welded to said sidewall portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |