US4801032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for containers with convenient tear off skirt
Assignee: Portola Packaging Inc
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Filing: 1987-08-24
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Granted: 1989-01-31
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Expires: 2007-08-24
Abstract
Abstract A closure for containers, such as a blow molded jug having a neck surrounding an opening therein and a pair of vertically spaced fastening configurations on the exterior thereof, the closure having a cap portion and an annular tear skirt depending therefrom. The cap portion and the tear skirt having vertically spaced fastening configurations and a frangible annular wall joining the tear skirt and the cap portion between said fastening configurations. The tear skirt having a vertically positioned frangible wall and a pull tab formed integrally with the tear skirt at one side of said vertical frangible wall and of a height equal to said tear skirt. Vertically positioned ribs on the opposite sides of said pull tab facilitating manual grasping of said pull tab and removing the tear skirt from the closure so as to permit the closure to be removed from the container on which it is applied.
Inventors
- 👤 Harry E. Crisci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:16
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
197 words
An improvement in a resilient molded plastic closure for a container of the type having a neck surrounding an opening to the container and having dual closure retaining means on the exterior of said neck; said closure comprising a cap for covering said opening to said container, a depending annular flange on the peripheral edge of said cap, closure retaining means in said depending annular flange, an annular groove in said depending annular flange adjacent said cap forming an annular frangible wall defining a continuous tear skirt therebelow; the improvement comprising: a vertically positioned frangible wall formed in said depending annular flange and extending from a lower edge thereof to said annular frangible wall so as to form means for separating said tear skirt, an enlarged pull tab integrally formed with said tear skirt on one side of said vertically positioned frangible wall and extending vertically from the lower edge of said tear skirt to said annular frangible wall whereby said enlarged pull tab defines an extension of one end of said tear skirt of size and shape enabling it to be easily manually engaged and moved so as to remove said tear skirt from said closure.
Claim 2
Dependent Claim
197 words
An improvement in a resilient molded plastic closure for a container of the type having a neck surrounding an opening to the container and having dual closure retaining means on the exterior of said neck; said closure comprising a cap for covering said opening to said container, a depending annular flange on the peripheral edge of said cap, closure retaining means in said depending annular flange, an annular groove in said depending annular flange adjacent said cap forming an annular frangible wall defining a continuous tear skirt therebelow; the improvement comprising: a vertically positioned frangible wall formed in said depending annular flange and extending from a lower edge thereof to said annular frangible wall so as to form means for separating said tear skirt, an enlarged pull tab integrally formed with said tear skirt on one side of said vertically positioned frangible wall and extending vertically from the lower edge of said tear skirt to said annular frangible wall whereby said enlarged pull tab defines an extension of one end of said tear skirt of size and shape enabling it to be easily manually engaged and moved so as to remove said tear skirt from said closure.
Claim 3
Dependent Claim
238 words
An improvement in a resilient molded plastic closure for a container of the type having a neck surrounding an opening to the container and having dual closure retaining means on the exterior of said neck; said closure comprising a cap for covering said opening to said container, a first depending annular flange of a known diameter and height on the peripheral edge of said cap and a second depending annular flange of a larger diameter and substantially greater height than said first depending annular flange positioned on said first depending annular flange, said first and second depending annular flanges surrounding said neck, closure retaining means in said second depending annular flange adjacent an upper edge thereof forming an annular frangible wall defining a tear skirt therebelow; the improvement comprising: a vertically positioned frangible wall formed in said second depending annular flange and extending from a lower edge thereof to said annular frangible wall so as to form means for separating said tear skirt, an enlarged pull tab integrally formed with said tear skirt so as to extend from the lower edge of said tear skirt to said annular frangible wall whereby said enlarged pull tab defines an outwardly offset extension of one end of said tear skirt of the same height as said tear skirt and of a size enabling it to be easily manually engaged and moved so as to remove said tear skirt from said closure.
Claim 4
Dependent Claim
238 words
An improvement in a resilient molded plastic closure for a container of the type having a neck surrounding an opening to the container and having dual closure retaining means on the exterior of said neck; said closure comprising a cap for covering said opening to said container, a first depending annular flange of a known diameter and height on the peripheral edge of said cap and a second depending annular flange of a larger diameter and substantially greater height than said first depending annular flange positioned on said first depending annular flange, said first and second depending annular flanges surrounding said neck, closure retaining means in said second depending annular flange adjacent an upper edge thereof forming an annular frangible wall defining a tear skirt therebelow; the improvement comprising: a vertically positioned frangible wall formed in said second depending annular flange and extending from a lower edge thereof to said annular frangible wall so as to form means for separating said tear skirt, an enlarged pull tab integrally formed with said tear skirt so as to extend from the lower edge of said tear skirt to said annular frangible wall whereby said enlarged pull tab defines an outwardly offset extension of one end of said tear skirt of the same height as said tear skirt and of a size enabling it to be easily manually engaged and moved so as to remove said tear skirt from said closure.
Claim 5
Dependent Claim
41 words
The improvement in a resilient molded plastic closure set forth in claim 2 and wherein the outer end of said enlarged pull tab is of a greater height than the intermediate portion thereof so as to define a horizontal offset therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |