US3715051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening container
Assignee: Primerica Inc
•
Filing: 1971-11-30
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Granted: 1973-02-06
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Expires: 1991-11-30
Abstract
Abstract An improved pull tab for a container end closure. The improvement comprises providing in the front panel of the front non-handle portion of the tab a slit perpendicular to the longitudinal axis of the tab, and two score lines adjoining and perpendicular to the slit and parallel to each other and to the longitudinal axis of the tab. The slit and score lines together partially define a hinged section of the front panel of the tab through which a rivet affixes the tab to the central wall of the container end closure. The slit and score configuration protects the tab from being accidentally lifted and pivoted and from accidentally rupturing the score in the central wall.
Inventors
- 👤 E Hanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:11
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
221 words
An improved pull tab for an end closure for a container, said end closure being of a type having a substantially flat central wall, a removable central panel in said wall bounded by a score, a pull tab for initiating rupture of said score, and means for affixing said pull tab to said removable panel such that said tab is in a position to effect said rupture, said pull tab being of a type having a handle portion at one end and a front portion toward the other end thereof, said front portion having a front panel within which there is a hinged section bounded by a hinged area and separating means, said hinged section being that through which said affixing means affixes said tab to said central wall and being adapted by said separating means to hinge and partially separate from said front panel when said tab is manipulated to effect said rupture, the improvement which comprises said separating means including a slit in said front panel, said slit being between said affixing means and said handle portion substantially perpendicular to the longitudinal axis of said tab, and two score lines in said front panel, one to either side of said affixing means, each adjoining said slit and parallel to each other and to said longitudinal axis of said tab.
Claim 2
Dependent Claim
221 words
An improved pull tab for an end closure for a container, said end closure being of a type having a substantially flat central wall, a removable central panel in said wall bounded by a score, a pull tab for initiating rupture of said score, and means for affixing said pull tab to said removable panel such that said tab is in a position to effect said rupture, said pull tab being of a type having a handle portion at one end and a front portion toward the other end thereof, said front portion having a front panel within which there is a hinged section bounded by a hinged area and separating means, said hinged section being that through which said affixing means affixes said tab to said central wall and being adapted by said separating means to hinge and partially separate from said front panel when said tab is manipulated to effect said rupture, the improvement which comprises said separating means including a slit in said front panel, said slit being between said affixing means and said handle portion substantially perpendicular to the longitudinal axis of said tab, and two score lines in said front panel, one to either side of said affixing means, each adjoining said slit and parallel to each other and to said longitudinal axis of said tab.
Claim 3
Dependent Claim
221 words
An improved pull tab for an end closure for a container, said end closure being of a type having a substantially flat central wall, a removable central panel in said wall bounded by a score, a pull tab for initiating rupture of said score, and means for affixing said pull tab to said removable panel such that said tab is in a position to effect said rupture, said pull tab being of a type having a handle portion at one end and a front portion toward the other end thereof, said front portion having a front panel within which there is a hinged section bounded by a hinged area and separating means, said hinged section being that through which said affixing means affixes said tab to said central wall and being adapted by said separating means to hinge and partially separate from said front panel when said tab is manipulated to effect said rupture, the improvement which comprises said separating means including a slit in said front panel, said slit being between said affixing means and said handle portion substantially perpendicular to the longitudinal axis of said tab, and two score lines in said front panel, one to either side of said affixing means, each adjoining said slit and parallel to each other and to said longitudinal axis of said tab.
Claim 4
Dependent Claim
221 words
An improved pull tab for an end closure for a container, said end closure being of a type having a substantially flat central wall, a removable central panel in said wall bounded by a score, a pull tab for initiating rupture of said score, and means for affixing said pull tab to said removable panel such that said tab is in a position to effect said rupture, said pull tab being of a type having a handle portion at one end and a front portion toward the other end thereof, said front portion having a front panel within which there is a hinged section bounded by a hinged area and separating means, said hinged section being that through which said affixing means affixes said tab to said central wall and being adapted by said separating means to hinge and partially separate from said front panel when said tab is manipulated to effect said rupture, the improvement which comprises said separating means including a slit in said front panel, said slit being between said affixing means and said handle portion substantially perpendicular to the longitudinal axis of said tab, and two score lines in said front panel, one to either side of said affixing means, each adjoining said slit and parallel to each other and to said longitudinal axis of said tab.
References Cited (Backward Citations)
US3195765A
Cited
US3430802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |