US3785522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lid for easy opening cans
Assignee: Cebal GP
•
Filing: 1970-12-30
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Granted: 1974-01-15
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Expires: 1990-12-30
Abstract
Abstract A lid for use in an easy open can including a lid panel provided with a weakened portion defining a tear line, a tab fixed to the lid panel near the tear line having an end portion adapted to cut into the lid panel and a concave rib formed in the lid panel adjacent to the tab to permit deformation of the lid panel when the tab is lifted during the opening of the can to prevent the tab from breaking off the lid panel.
Inventors
- 👤 Gerard Prayer
- 👤 Jean-Marie Ferrat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:15
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/42; B65D17/46; B65D17/462; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A lid for an easy open can comprising a lid panel including a weakened portion defining a tear line, a tab fixed to the lid panel near the tear line having an end portion adapted to cut into the lid panel, said tab being fixed to the panel by a rivet formed in the material fo the panel, and a concave rib formed in the lid panel directly adjacent to the rivet to permit deformation of the lid panel on lifting of the tab and thereby prevent the tab from breaking off the lid panel.
Claim 2
Dependent Claim
95 words
A lid for an easy open can comprising a lid panel including a weakened portion defining a tear line, a tab fixed to the lid panel near the tear line having an end portion adapted to cut into the lid panel, said tab being fixed to the panel by a rivet formed in the material fo the panel, and a concave rib formed in the lid panel directly adjacent to the rivet to permit deformation of the lid panel on lifting of the tab and thereby prevent the tab from breaking off the lid panel.
Claim 3
Dependent Claim
26 words
A lid as defined in claim 1 wherein the concave rib is curved, and has a center of curvature coincident with the axis of the rivet.
Claim 4
Dependent Claim
23 words
A lid as defined in claim 1 wherein the rib is linear and extends substantially perpendicular to the longitudinal axis of the tab.
Claim 5
Dependent Claim
18 words
A lid as defined in claim 1 wherein the tab includes a gripping portion opposite the end portion.
Claim 6
Dependent Claim
19 words
A lid as defined in claim 1 wherein the end portion of the tab extends beyond the tear line.
Claim 7
Dependent Claim
27 words
A lid as defined in claim 5 wherein the end portion of the tab extends beyond the tear line by a distance of 50 to 100 microns.
Claim 8
Dependent Claim
23 words
A lid as defined in claim 1 wherein the depth of the concave rib is greater than the thickness of the lid panel.
Claim 9
Dependent Claim
76 words
A lid for an easy open can comprising a removable lid panel defined by a score line having a relatively high residual, a pull-tab fixed to the panel by means of a rivet formed from the material of the panel and a concave rib formed in said panel directly adjacent to the rivet and displaced from said rivet base toward the center of said panel and thereby prevent the tab from breaking off the lid panel.
Claim 10
Dependent Claim
76 words
A lid for an easy open can comprising a removable lid panel defined by a score line having a relatively high residual, a pull-tab fixed to the panel by means of a rivet formed from the material of the panel and a concave rib formed in said panel directly adjacent to the rivet and displaced from said rivet base toward the center of said panel and thereby prevent the tab from breaking off the lid panel.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |