Patent US3552597A successfully refreshed from Google Patents.
US3552597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening container
Assignee: Continental Can Co Inc
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Filing: 1969-01-03
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Granted: 1971-01-05
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Expires: 1989-01-03
Abstract
Abstract A three component easy opening ends structure for a metal container. The easy opening structure comprises a two-piece bonded lip bounding an opening formed in the container. A closure member is releasably bonded to the lip and separable therefrom upon the application of a pulling force.
Inventors
- 👤 Jens L Moller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:36
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/50; B65D17/506; Y; Y10; Y10S; Y10S220/00; Y10S220/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
70 words
An easy opening container including an end panel having an opening, a lip assembly fixed about said opening, said lip assembly including a first ring having a collar formed along the inner periphery and extending through said opening and an attachment ring embracing said collar and disposed on the face opposite the one on which said first ring is disposed, and a closure member releasably bonded to said first ring.
Claim 2
Dependent Claim
70 words
An easy opening container including an end panel having an opening, a lip assembly fixed about said opening, said lip assembly including a first ring having a collar formed along the inner periphery and extending through said opening and an attachment ring embracing said collar and disposed on the face opposite the one on which said first ring is disposed, and a closure member releasably bonded to said first ring.
Claim 3
Dependent Claim
29 words
The invention as defined in claim 1, wherein said end panel is made from metal, and said lip assembly and said closure member are made from a thermoplastic material.
Claim 4
Dependent Claim
28 words
The invention as defined in claim 2, wherein said end panel includes an enamel coating and said first ring and said attachment ring are bonded to said enamel.
Claim 5
Dependent Claim
20 words
The invention as defined in claim 3, wherein the inner circumference of said attachment ring is bonded to said collar.
Claim 6
Dependent Claim
18 words
The invention as defined in claim 4, wherein said closure member includes a pull tab formed integral therewith.
Claim 7
Dependent Claim
18 words
The invention as defined in claim 5, wherein said pull tab is in the form of a ring.
Claim 8
Dependent Claim
21 words
The invention as defined in claim 3, wherein said closure member is releasably bonded to said first ring by ultrasonic means.
References Cited (Backward Citations)
US3355059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |