Patent US4054228A successfully refreshed from Google Patents.
US4054228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can end closure having first and second sealing means
Assignee: Primerica Inc
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Filing: 1977-04-01
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Granted: 1977-10-18
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Expires: 1997-04-01
Abstract
Abstract The instant invention relates to an end closure or cover for a metal container comprising a substantially flat sheet metal lid seamed about its extremity to the container body closing the end thereof. The lid has a pour opening having a closure hingedly connected to the lid and closing the pour opening, and wherein first and second sealing means are provided to seal the closure and to provide resistance of the closure to atmospheric pressure and premature opening of the container.
Inventors
- 👤 Alfred E. Balocca
- 👤 Paul W. Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:58
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D2205/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
An end cover for a container comprising, a central panel having a pour opening and a first closure dimensioned and configured to close said pour opening, first hinge means for manually displaceably mounting said first closure on said panel with said first closure sealingly engaged across said pour opening by first sealing means positioned exclusive of said hinge means and including second sealing means sealingly engaged across said pour opening, said first sealing means having a higher tensile strength than said second sealing means and positioned beneath said second sealing means in a localized area spaced apart from said hinge means.
Claim 2
Dependent Claim
101 words
An end cover for a container comprising, a central panel having a pour opening and a first closure dimensioned and configured to close said pour opening, first hinge means for manually displaceably mounting said first closure on said panel with said first closure sealingly engaged across said pour opening by first sealing means positioned exclusive of said hinge means and including second sealing means sealingly engaged across said pour opening, said first sealing means having a higher tensile strength than said second sealing means and positioned beneath said second sealing means in a localized area spaced apart from said hinge means.
Claim 3
Dependent Claim
48 words
The end cover of claim 1 including a vent opening and a second closure dimensioned and configured to close said vent opening, second hinge means for manually displaceably mounting said second closure on said panel, and third sealing means sealing engaging said second closure across said vent opening.
Claim 4
Dependent Claim
58 words
The end cover of claim 2 including a fourth sealing means exclusive and spaced apart in a localized area from said second hinge means and sealing engaged across said second closure and said panel and cooperating with said third sealing means to effect a hermetic seal therebetween, said fourth sealing means being positioned beneath said third sealing means.
Claim 5
Dependent Claim
34 words
The end cover of claim 2 wherein said first sealing means is present in an amount of from 5 to 6 mgs. distributed over a generally circular area of about 3 mm. in diameter.
Claim 6
Dependent Claim
33 words
The end cover of claim 2 wherein said first sealing means is a plastisol having a tensile strength of from 1900 to 2700 psi and an elongation value of from 175 to 245%.
Claim 7
Dependent Claim
14 words
The end cover of claim 2 wherein said first sealing means is a plastisol.
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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |