US5163575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with curled tamper-evident band to retain closure
Assignee: Portola Packaging Inc
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Filing: 1991-08-07
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Granted: 1992-11-17
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Expires: 2011-08-07
Abstract
Abstract A thin-walled, wide mouth molded plastic container is provided with a tamper evident band initially molded as a straight-walled cylinder spaced outwardly of the lip of the container and connected thereto by a frangible horizontal bridge. The upper edge of the cylindrical band extends above the level of the container lip. Subsequent to molding and preferably before capping, the band is curled inward by application of a curling tool. The container lid is axially applied, the outer edge of the lid displacing the curled band outward. The resilience of the band and bridge permits outward deflection and immediate restoration of the curl to its initial position. The curl prevents removal of the lid without fracture of the bridge and removal of the tamper-evident band.
Inventors
- 👤 Daniel Luch
- 👤 Rawson Chenault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:05
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0214; B65D43/0218; B65D2401/00; B65D2401/10; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00537; B65D2543/00555; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49876
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A thin-walled, molded, resilient plastic container having an upper end comprising a wall having an upper lip having an uppermost edge, an initially cylindrical tamper-evident band spaced outwardly and extending above the uppermost edge of said lip formed of a curlable material, and frangible means joining said band to said wall adjacent said lip, said band being deformed, the upper portion of said band curling downward-inward in a curled portion, said curled portion having a terminal lowermost edge directly opposed to and spaced above said uppermost edge.
Claim 2
Dependent Claim
87 words
A thin-walled, molded, resilient plastic container having an upper end comprising a wall having an upper lip having an uppermost edge, an initially cylindrical tamper-evident band spaced outwardly and extending above the uppermost edge of said lip formed of a curlable material, and frangible means joining said band to said wall adjacent said lip, said band being deformed, the upper portion of said band curling downward-inward in a curled portion, said curled portion having a terminal lowermost edge directly opposed to and spaced above said uppermost edge.
Claim 3
Dependent Claim
32 words
A container according to claim 1 in which said lip has a downward-outward curved extension, said frangible means connecting a lower edge of said extension to a lower edge of said bend.
Claim 4
Dependent Claim
94 words
In combination, a container according to claim 1 and a lid, said lid comprising a top closing off the upper end of said container and extending outward beyond said lip and interposed between said lip and said lowermost edge of the inward curled portion of said band, a first portion engaging the inside of the upper portion of said wall below said lip and a peripheral depending skirt engaging the outside of said lip disposed inward of said band, whereby said lid cannot be removed without fracturing said frangible means and removing said band.
Claim 5
Dependent Claim
146 words
In combination, a thin-walled molded, resilient plastic container having an upper end comprising a wall having an upper lip with a top surface initially cylindrical tamper-evident band spaced outwardly and extending above the top surface of said lip formed of a curlable material, and frangible means joining said band to said wall adjacent said lip, said band being deformed, the upper portion of said band curling downward-inward in a curled portion, said curled portion having a terminus spaced above said lip, sand comprising a lid, said lid having a top closing off the upper end of said container, said top having an outer edge and an outward extending portion extending outward beyond said outer edge interposed between said lip and said terminus of the inward curled portion of the band, whereby said lid cannot be removed without fracturing said frangible means and removing said tamper-evident band.
Claim 6
Dependent Claim
146 words
In combination, a thin-walled molded, resilient plastic container having an upper end comprising a wall having an upper lip with a top surface initially cylindrical tamper-evident band spaced outwardly and extending above the top surface of said lip formed of a curlable material, and frangible means joining said band to said wall adjacent said lip, said band being deformed, the upper portion of said band curling downward-inward in a curled portion, said curled portion having a terminus spaced above said lip, sand comprising a lid, said lid having a top closing off the upper end of said container, said top having an outer edge and an outward extending portion extending outward beyond said outer edge interposed between said lip and said terminus of the inward curled portion of the band, whereby said lid cannot be removed without fracturing said frangible means and removing said tamper-evident band.
Claim 7
Dependent Claim
17 words
The combination of claim 4 in which said lip further comprises seal means sealingly engaging said lip.
Claim 8
Dependent Claim
57 words
The combination of claim 5 in which the outer edge of said top engages an interior of said wall of said container and which further comprises an upward extending vertical edge, a ring extending outward from said vertical edge and engaging the top of said lip, and in which said terminus is located immediately above said ring.
Claim 9
Dependent Claim
27 words
The combination of claim 6 which further comprises a downward extending skirt on the outer edge of said ring, said skirt engaging an exterior of said lip.
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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) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |