US3638825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can ends
Assignee: Crown Packaging UK Ltd
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Filing: 1970-06-22
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Granted: 1972-02-01
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Expires: 1990-06-22
Abstract
Abstract A sheet metal end for a container has a chuck wall which fits in a container and a seam-forming panel by which the end is end seamed to the container. The lower end of the chuck wall merges into a radiused portion which defines a channel and in accordance with the invention the radiused portion merges into a raised zone of the end through contiguous first and second portions which slope upwards from the radiused portion to a third portion which is contiguous with the second portion and merges into a central portion of the end. The second portion slopes upwards less steeply than the first portion. The third portion may be connected with the central portion through a fourth portion which slopes downwards less steeply than the third portion. A score for easy opening may be provided in a convex portion connecting the second and third portions.
Inventors
- 👤 Jozef Tadeusz Franek
- 👤 Peter Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
107 words
A sheet metal end for a container, comprising a seam-forming panel extending laterally from one end of a chuck wall the opposite end of which merges into a radiused portion defining a channel, said radiused portion itself merging into a raised zone of the container end, characterized in that the raised zone includes contiguous first and second portions which slope upwards from the said radiused portion to a third portion of the raised zone contiguous with said second portion thereof, the third portion sloping downwards towards and merging into a central portion of the container end, said second portion sloping upwards less steeply than said first portion.
Claim 2
Dependent Claim
107 words
A sheet metal end for a container, comprising a seam-forming panel extending laterally from one end of a chuck wall the opposite end of which merges into a radiused portion defining a channel, said radiused portion itself merging into a raised zone of the container end, characterized in that the raised zone includes contiguous first and second portions which slope upwards from the said radiused portion to a third portion of the raised zone contiguous with said second portion thereof, the third portion sloping downwards towards and merging into a central portion of the container end, said second portion sloping upwards less steeply than said first portion.
Claim 3
Dependent Claim
29 words
A container end according to claim 1, wherein the length of the first portion considered in the direction of slope thereof is shorter than that of the second portion.
Claim 4
Dependent Claim
45 words
A container end according to claim 1, wherein the third portion is connected with the central portion by a fourth portion which slopes downwards to the central portion from the third portion with a slope which is more steep than that of the third portion.
Claim 5
Dependent Claim
25 words
A container end according to claim 1, wherein the junction between the first and second portions is effected by a convex portion of small radius.
Claim 6
Dependent Claim
25 words
A container end according to claim 1, wherein the junction between the second and third portions is effected by a convex portion of small radius.
Claim 7
Dependent Claim
35 words
A container end according to claim 5, wherein a score is formed in the convex portion between the second and third portions to facilitate easy opening of the end by a pull tab attached thereto.
Claim 8
Dependent Claim
30 words
A container end according to claim 1, wherein the junctions between the first and second portions and the second and third portions are effected by convex portions of small radius.
Claim 9
Dependent Claim
35 words
A container end according to claim 7, wherein a score is formed in the convex portion between the second and third portions to facilitate easy opening of the end by a pull tab attached thereto.
Claim 10
Dependent Claim
29 words
A container end according to claim 7, wherein the length of the first portion considered in the direction of slope thereof is shorter than that of the second portion.
Claim 11
Dependent Claim
45 words
A container end according to claim 9, wherein the third portion is connected with the central portion by a fourth portion which slopes downwards to the central portion from the third portion with a slope which is more steep than that of the third portion.
References Cited (Backward Citations)
US3341058A
Cited
US3417898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |