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US3695476A Expired / Lapsed US ⏱️ 0.0 years remaining

Tamper-indicating and child-proof closure

Assignee: Continental Can Co Inc
•
Filing: 1971-06-15
•
Granted: 1972-10-03
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Expires: 1991-06-15
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Abstract

Abstract A tamper-indicating and child-proof closure for a container having a threaded neck and a beaded pouring lip comprising an upper skirt and a lower skirt. The upper skirt includes an internal annular snap-on bead which seats under the pouring lip. The lower skirt includes internal threads complementary to the neck threads and outwardly spaced therefrom. The upper and lower skirts are non-severably connected along a short arc and severably connected by horizontal fracture bridges along substantially circumferential contact surface. The normal spacing of the lower skirt threads from the neck threads permits turning of the closure without removal thereof until the lower skirt is deflected inwardly to engage the threaded neck. Upon deflection of the lower skirt and a small amount of rotation, a portion of the snap-on bead is progressively uplifted over the pouring lip resulting in the eventual removal of the closure during which circumferentially spaced bridges joining the upper and lower skirts are fractured to permit the removal of the closure and additionally provide a tamper-indicating function.

Inventors

  • 👤 Herbert S Ruekberg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 03:59
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/045; B65D50/048; B65D41/00; B65D41/32

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 125 words
A closure for a container comprising an end panel, an upper peripheral skirt depending from said end panel, said upper peripheral skirt having first means for securing said closure to an associated container, a lower peripheral skirt beneath said upper peripheral skirt, second means connecting said upper and lower peripheral skirts to each other by a peripherally short connecting portion, and said lower peripheral skirt having third means responsive to rotation of said lower peripheral skirt for applying upward force to a portion of said first means through said second means to pry said portion from an associated container by initiating peeling off of the closure and upon further rotation prying off of the remainder of said first means to completely peel off said cLosure.
Claim 2
Dependent Claim 125 words
A closure for a container comprising an end panel, an upper peripheral skirt depending from said end panel, said upper peripheral skirt having first means for securing said closure to an associated container, a lower peripheral skirt beneath said upper peripheral skirt, second means connecting said upper and lower peripheral skirts to each other by a peripherally short connecting portion, and said lower peripheral skirt having third means responsive to rotation of said lower peripheral skirt for applying upward force to a portion of said first means through said second means to pry said portion from an associated container by initiating peeling off of the closure and upon further rotation prying off of the remainder of said first means to completely peel off said cLosure.
Claim 3
Dependent Claim 16 words
The closure as defined in claim 1 wherein said first means comprises an internal annular bead.
Claim 4
Dependent Claim 21 words
The closure as defined in claim 1 wherein said second means comprises a horizontal connecting wall and a vertical reinforcing rib.
Claim 5
Dependent Claim 15 words
The closure as defined in claim 1 wherein said third means comprises annular internal threads.
Claim 6
Dependent Claim 38 words
The closure as defined in claim 1 including fourth means for severably connecting a remaining portion of said upper and lower peripheral skirts to each other whereby said rotation ruptures at least a part of said fourth means.
Claim 7
Dependent Claim 44 words
The closure as defined in claim 1 wherein said lower peripheral skirt is constructed of flexible material and is normally of a cylindrical configuration, and said third means is operative only upon applying force to said lower peripheral skirt to ovalize the configuration thereof.
Claim 8
Dependent Claim 16 words
The closure as defined in claim 5 wherein said first means comprises an internal annular bead.
Claim 9
Dependent Claim 21 words
The closure as defined in claim 5 wherein said second means comprises a horizontal connecting wall and a vertical reinforcing rib.
Claim 10
Dependent Claim 15 words
The closure as defined in claim 5 wherein said third means comprises annular internal threads.

References Cited (Backward Citations)

US2752060A Cited
US3371808A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-03 1976-04-03 1976-10-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-03 1980-04-03 1980-10-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-03 1984-04-03 1984-10-03 $7700.00 Window Closed / Lapsed

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