US3929252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child-resistant closure for metal container
Assignee: Primerica Inc
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Filing: 1974-08-22
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Granted: 1975-12-30
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Expires: 1994-08-22
Abstract
Abstract In a container for potentially dangerous products, for example automotive products, a metallic end closure is provided having a central panel portion, a displaceable portion defined by a score line included in the central panel portion, an opening tab attached to the displaceable portion proximate the periphery of the central panel portion, the pull ring or handle being radially inward from the point of attachment of the opening tab to the displaceable portion, means on said central panel portion for releasably holding said opening tab substantially flat against said central panel portion and an underlying arcuate channel which permits the handle of the opening tab to nest within the central panel portion thereby resisting opening by hand and providing a child-resistant safety feature in such closures.
Inventors
- 👤 Croce Leonard Thomas La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:50
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
125 words
In an end closure for a container having a central panel portion, a displaceable portion defined by a score line included in said central panel portion, and an opening tab including a pull ring attached to the displaceable portion at a point proximate the periphery of the central panel portion with the pull ring of the opening tab radially inward from the point of attachment, the improvement which comprises an arcuate channel formed in the central panel portion underlying the pull ring of the opening tab, the channel being configured to coincide with the pull ring and substantially nesting the pull ring therein, and means for releasably engaging the pull ring to maintain and resist movement of the pull ring from said substantially nested position.
Claim 2
Dependent Claim
125 words
In an end closure for a container having a central panel portion, a displaceable portion defined by a score line included in said central panel portion, and an opening tab including a pull ring attached to the displaceable portion at a point proximate the periphery of the central panel portion with the pull ring of the opening tab radially inward from the point of attachment, the improvement which comprises an arcuate channel formed in the central panel portion underlying the pull ring of the opening tab, the channel being configured to coincide with the pull ring and substantially nesting the pull ring therein, and means for releasably engaging the pull ring to maintain and resist movement of the pull ring from said substantially nested position.
Claim 3
Dependent Claim
36 words
An improved end closure as defined in claim 1 wherein the means for releasably engaging the pull ring of the opening tab comprises posts on said central panel portion adjacent the inside of the pull ring.
Claim 4
Dependent Claim
21 words
An improved end closure as defined in claim 2 wherein said pull ring comprises flattened angular indentations engaged by the posts.
Claim 5
Dependent Claim
23 words
An improved end closure as defined in claim 3 in which said posts are raised above the plane of the central panel portion.
Claim 6
Dependent Claim
26 words
An improved end closure as defined in claim 1 in which said arcuate channel extends beneath substantially the entire pull ring portion of the opening tab.
Claim 7
Dependent Claim
20 words
An improved end closure as defined in claim 1 in which said pull ring has an angular raised end portion.
Claim 8
Dependent Claim
38 words
An improved end closure as defined in claim 6 in which the angular raised end portion of the pull ring defines a space between the central panel portion that is insufficient to permit grasping or lifting by hand.
Claim 9
Dependent Claim
35 words
An improved end closure as defined in claim 7 in which the angular raised end portion of the pull ring defines a space between the central panel portion that permits insertion of a prying tool.
Claim 10
Dependent Claim
15 words
An improved end closure as defined in claim 1 in which said closure is metallic.
Claim 11
Dependent Claim
166 words
In a metallic end closure for a container having a central panel portion, a displaceable portion defined by a score line included in said central panel portion and an opening tab including a pull ring attached to the displaceable portion at a point proximate the periphery of the central panel portion with the pull ring of the opening tab radially inward from the point of attachment, the improvement which comprises a child-resistant opening mechanism comprising a pull ring, having flattened indentations and an angular raised end portion, substantially nested in an arcuate channel in the central panel portion underlying the pull ring and raised posts releasably engaging the indentations of said pull ring to maintain the pull ring in said nested position and to resist movement therefrom, the angular raised end of said pull ring defining a space between the central panel portion that is sufficient to permit insertion of a prying tool but is insufficient to readily permit lifting of the pull ring by hand.
Claim 12
Dependent Claim
166 words
In a metallic end closure for a container having a central panel portion, a displaceable portion defined by a score line included in said central panel portion and an opening tab including a pull ring attached to the displaceable portion at a point proximate the periphery of the central panel portion with the pull ring of the opening tab radially inward from the point of attachment, the improvement which comprises a child-resistant opening mechanism comprising a pull ring, having flattened indentations and an angular raised end portion, substantially nested in an arcuate channel in the central panel portion underlying the pull ring and raised posts releasably engaging the indentations of said pull ring to maintain the pull ring in said nested position and to resist movement therefrom, the angular raised end of said pull ring defining a space between the central panel portion that is sufficient to permit insertion of a prying tool but is insufficient to readily permit lifting of the pull ring by hand.
Claim 13
Dependent Claim
23 words
An improved end closure as defined in claim 10 in which said displaceable portion remains attached to said central panel portion after opening.
Claim 14
Dependent Claim
23 words
An improved end closure as defined in claim 10 in which the displaceable portion is removable from said central panel portion after opening.
References Cited (Backward Citations)
US3780902A
Cited
US3744667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |