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US3752353A Expired / Lapsed US ⏱️ 0.0 years remaining

Can end

Assignee: The Campbell's Co
•
Filing: 1972-01-24
•
Granted: 1973-08-14
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Expires: 1992-01-24
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Abstract

Abstract A can end having a score line defining a removable panel and a lanced pull tab mounted by means of a rivet on the panel for use in rupturing the score line and removing the panel is provided with shaped embossments in the panel for providing first and second bend lines in the panel transverse to the tab to cause the panel to bend readily during separation without requiring thumb pressure on the panel. The first bend line extends along a chordal line located rearwardly adjacent the rivet and tangent to the terminii of two arcuate extensions of one of the embossments, which extensions extend peripherally from their terminii to locations adjacent the diameter of the panel and are there linked together by a depressed region which is located under the pull tab and which cooperates with another semi-circular embossment on the other half of the panel to provide the second bend line when the tab is pulled after being pivoted upwardly to rupture the score line and to bend the panel along the first bend line.

Inventors

  • 👤 W Slade

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 09:08
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 320 words
In a can end having a score line defining a removable panel, an elongated opening tab overlying the panel for use in rupturing the panel along the score line to separate the panel from the container ends, said tab having a rupturing nose located adjacent said score line and a finger grip spaced inwardly from said nose, rivet means securing the tab to the panel inside said score line, and an arcuate lance in said tab surrounding a major portion of said rivet to define a tab hinge intermediate said nose and said rivet, the improvement comprising: an embossment on said panel having a pair of arcuate extensions inset from said score line and extending substantially parallel therewith, said extensions being located outboard of the tab and terminating in spaced relation inwardly of said nose for defining a first bend line in said panel transverse to said tab when said tab is pivoted inwardly, said embossment including a portion extending transversely to said tab for linking said pair of extensions at locations remote from their terminii, said rivet being located outwardly adjacent said first bend line so that when the tab is lifted and pivoted about its hinge to engage its nose against the score line, the panel bends along the first bend line and the rivet inclines to cause the score line to rupture initially in opposite directions from the nose to locations adjacent the terminii of the extensions, and a second embossment in said panel having a portion underlying the finger grip and extending beyond the outline thereof, said second embossment terminating inwardly of an arcuate line extending medially of said extensions to cooperate with said first-mentioned embossment to define a second bend line substantially transversely to the tab when the tab is pulled to remove the panel, whereby the panel bends readily during removal and the panel is completely removed when the finger grip is pulled upwardly.
Claim 2
Dependent Claim 320 words
In a can end having a score line defining a removable panel, an elongated opening tab overlying the panel for use in rupturing the panel along the score line to separate the panel from the container ends, said tab having a rupturing nose located adjacent said score line and a finger grip spaced inwardly from said nose, rivet means securing the tab to the panel inside said score line, and an arcuate lance in said tab surrounding a major portion of said rivet to define a tab hinge intermediate said nose and said rivet, the improvement comprising: an embossment on said panel having a pair of arcuate extensions inset from said score line and extending substantially parallel therewith, said extensions being located outboard of the tab and terminating in spaced relation inwardly of said nose for defining a first bend line in said panel transverse to said tab when said tab is pivoted inwardly, said embossment including a portion extending transversely to said tab for linking said pair of extensions at locations remote from their terminii, said rivet being located outwardly adjacent said first bend line so that when the tab is lifted and pivoted about its hinge to engage its nose against the score line, the panel bends along the first bend line and the rivet inclines to cause the score line to rupture initially in opposite directions from the nose to locations adjacent the terminii of the extensions, and a second embossment in said panel having a portion underlying the finger grip and extending beyond the outline thereof, said second embossment terminating inwardly of an arcuate line extending medially of said extensions to cooperate with said first-mentioned embossment to define a second bend line substantially transversely to the tab when the tab is pulled to remove the panel, whereby the panel bends readily during removal and the panel is completely removed when the finger grip is pulled upwardly.
Claim 3
Dependent Claim 28 words
A can end according to claim 1 wherein said rivet is elongated in the direction of said first bend line and is located inwardly 0f said arcuate line.

References Cited (Backward Citations)

US3653536A Cited
US3662916A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-13 1977-02-12 1977-08-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-13 1981-02-12 1981-08-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-13 1985-02-12 1985-08-14 $7700.00 Window Closed / Lapsed

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