US4951836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy-open container
Assignee: HOKKAI CAN Ltd
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Filing: 1989-10-13
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Granted: 1990-08-28
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Expires: 2009-10-13
Abstract
Abstract An easy-open container includes a container barrel having an open end and a container end including a panel, a peripheral wall joined to and depending from a peripheral edge of the panel, and a pull tab joined to a lower edge of the peripheral wall. The peripheral wall is scored to provide a tear-off line joined to a side edge of the pull tab. The peripheral wall is fitted over the open end of the container barrel. An outer surface of the open end of the container barrel and an inner surface of the peripheral wall of the container end are bonded to each other through a bonded region. The tear-off line comprises a first continuous portion extending from the side edge of the pull tab through a bonded region of the peripheral wall above the pull tab into a non-bonded region of the peripheral wall above an upper edge of the bonded region, a second dotted-line portion joined to the first continuous portion and extending along the non-bonded region of the peripheral wall above the upper edge of the bonded region, and a third continuous portion joined to the second dotted-line portion and extending along the non-bonded region of the peripheral wall above the upper edge of the bonded region.
Inventors
- 👤 Kunitoshi Yoshimura
- 👤 Akira Nakata
- 👤 Hitoshi Terai
- 👤 Sakayu Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:53
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D17/00; B65D17/28; B65D17/402; B65D77/00; B65D77/22; B65D77/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
212 words
An easy-open container comprising: a container barrel having an open end; a container end including a panel, a peripheral wall joined to and depending from a peripheral edge of said panel, and a pull tab joined to a lower edge of said peripheral wall, said peripheral wall being scored to provide a tear-off line joined to a side edge of said pull tab, said peripheral wall being fitted over the open end of said container barrel; a bonded region by which an outer surface of said open end of the container barrel and an inner surface of said peripheral wall of the container end are bonded to each other; and said tear-off line comprising a first continuous portion extending from the side edge of said pull tab through a bonded region of the peripheral wall above said pull tab into a non-bonded region of the peripheral wall above an upper edge of said bonded region, a second dotted-line portion joined to said first continuous portion and extending along the non-bonded region of the peripheral wall above the upper edge of said bonded region, and a third continuous portion joined to said second dotted-line portion and extending along the non-bonded region of the peripheral wall above the upper edge of said bonded region.
Claim 2
Dependent Claim
212 words
An easy-open container comprising: a container barrel having an open end; a container end including a panel, a peripheral wall joined to and depending from a peripheral edge of said panel, and a pull tab joined to a lower edge of said peripheral wall, said peripheral wall being scored to provide a tear-off line joined to a side edge of said pull tab, said peripheral wall being fitted over the open end of said container barrel; a bonded region by which an outer surface of said open end of the container barrel and an inner surface of said peripheral wall of the container end are bonded to each other; and said tear-off line comprising a first continuous portion extending from the side edge of said pull tab through a bonded region of the peripheral wall above said pull tab into a non-bonded region of the peripheral wall above an upper edge of said bonded region, a second dotted-line portion joined to said first continuous portion and extending along the non-bonded region of the peripheral wall above the upper edge of said bonded region, and a third continuous portion joined to said second dotted-line portion and extending along the non-bonded region of the peripheral wall above the upper edge of said bonded region.
Claim 3
Dependent Claim
81 words
An easy-open container according to claim 1, wherein said third continuous portion of the tear-off line includes a tear-off line segment extending from the non-bonded region of the peripheral wall into the bonded region thereof across the upper edge of said bonded region and back into said non-bonded region above said upper edge of the bonded region, said first and second continuous portions having starting and terminal ends, respectively, which vertically overlap each other and are vertically spaced from each other.
Claim 4
Dependent Claim
33 words
An easy-open container according to claim 1, wherein said starting end of the first continuous portion is positioned in confronting relation to a notch defined in the side edge of said pull tab.
Claim 5
Dependent Claim
43 words
An easy-open container according to claim 1, wherein said container end comprises a thin metal sheet and a thermoplastic resin layer coated on an outer surface of said thin metal sheet, said tear-off line being defined by partly removing said thermoplastic resin layer.
Claim 6
Dependent Claim
202 words
An easy-open container comprising: a container barrel having an open end; a container end including a panel, a peripheral wall joined to and depending from a peripheral edge of said panel, and a pull tab joined to a lower edge of said peripheral wall, said peripheral wall being scored to provide a tear-off line joined to a side edge of said pull tab, said peripheral wall being fitted over the open end of said container barrel; a bonded region by which an outer surface of said open end of the container barrel and an inner surface of said peripheral wall of the container end are bonded to each other; and said tear-off line comprising a continuous portion extending from the side edge of said pull tab through a bonded region of the peripheral wall above said pull tab into a non-bonded region of the peripheral wall above an upper edge of said bonded region, and another continuous portion extending along the non-bonded region of the peripheral wall above the upper edge of said bonded region, said portions of the tear-off line being disconnected from each other in the non-bonded region of the peripheral wall above the upper edge of said bonded region.
Claim 7
Dependent Claim
202 words
An easy-open container comprising: a container barrel having an open end; a container end including a panel, a peripheral wall joined to and depending from a peripheral edge of said panel, and a pull tab joined to a lower edge of said peripheral wall, said peripheral wall being scored to provide a tear-off line joined to a side edge of said pull tab, said peripheral wall being fitted over the open end of said container barrel; a bonded region by which an outer surface of said open end of the container barrel and an inner surface of said peripheral wall of the container end are bonded to each other; and said tear-off line comprising a continuous portion extending from the side edge of said pull tab through a bonded region of the peripheral wall above said pull tab into a non-bonded region of the peripheral wall above an upper edge of said bonded region, and another continuous portion extending along the non-bonded region of the peripheral wall above the upper edge of said bonded region, said portions of the tear-off line being disconnected from each other in the non-bonded region of the peripheral wall above the upper edge of said bonded region.
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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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |