US4936474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container neck finish configuration for improved tamper evident band breakage upon removal of associated closure
Assignee: Silgan Holdings Inc
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Filing: 1989-02-24
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Granted: 1990-06-26
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Expires: 2009-02-24
Abstract
Abstract This relates to an improved container tamper evident bead and neck finish arrangement which provides improved tamper evident band breakage upon removal of an associated closure. Most specifically, beneath the customary retaining bead, a container neck finish is of corrugated or scalloped configuration and is of a size whereby the tamper evident band or a retaining bead thereof is stretched across the space defined by a groove between two adjacent ribs so as to provide for a degree of interlock between the stretched tamper band and the container neck finish such that the tamper evident band is restrained against rotation with the remainder of the closure when the closure is rotated to effect removal thereof. This provides for a much quicker and more reliable breaking of the webs joining the tamper evident band to the closure skirt.
Inventors
- 👤 Dennis A. Szczesniak
- 👤 Peter A. Vercillo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:40
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3442
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
77 words
A container neck finish including an end sealing surface, closure retaining means, and a tamper band retaining bead spaced axially below said closure retaining means from said end sealing surface, said neck finish having a portion axially below said retaining bead being of a corrugated outline forming means for circumferential tensioned interlocking with a circular inner surface of a closure tamper band to resist rotation of a closure tamper band when a closure is rotated for removal.
Claim 2
Dependent Claim
77 words
A container neck finish including an end sealing surface, closure retaining means, and a tamper band retaining bead spaced axially below said closure retaining means from said end sealing surface, said neck finish having a portion axially below said retaining bead being of a corrugated outline forming means for circumferential tensioned interlocking with a circular inner surface of a closure tamper band to resist rotation of a closure tamper band when a closure is rotated for removal.
Claim 3
Dependent Claim
24 words
A container neck finish according to claim 1 wherein said corrugated outline has a maximum diameter less than the diameter of said retaining bead.
Claim 4
Dependent Claim
17 words
A container neck finish according to claim 1 wherein said corrugated outline includes diametrically oppositely facing portions.
Claim 5
Dependent Claim
29 words
A container neck finish according to claim 1 wherein said corrugated outline includes diametrically oppositely facing portions of a wider circumferential spacing than other portions of said corrugated outline.
Claim 6
Dependent Claim
24 words
A container neck finish according to claim 1 wherein said corrugated neck finish portion is tapered and increases in outline towards said retaining bead.
Claim 7
Dependent Claim
124 words
A container neck finish including an end sealing surface, closure retaining means, and a tamper band retaining bead spaced axially below said closure retaining means from said end sealing surface, said neck finish having a portion axially below said retaining bead being of a corrugated outline forming means for tensioned interlocking with a circular inner surface of a closure tamper band to resist rotation of a closure tamper band when a closure is rotated for removal, said corrugated outline includes a pair of diametrically oppositely facing principal ribs, and a secondary rib on each side of each of said principal ribs, each of said secondary ribs having a sloping generally flat axial face extending circumferentially generally towards a respective one of said primary ribs.
Claim 8
Dependent Claim
124 words
A container neck finish including an end sealing surface, closure retaining means, and a tamper band retaining bead spaced axially below said closure retaining means from said end sealing surface, said neck finish having a portion axially below said retaining bead being of a corrugated outline forming means for tensioned interlocking with a circular inner surface of a closure tamper band to resist rotation of a closure tamper band when a closure is rotated for removal, said corrugated outline includes a pair of diametrically oppositely facing principal ribs, and a secondary rib on each side of each of said principal ribs, each of said secondary ribs having a sloping generally flat axial face extending circumferentially generally towards a respective one of said primary ribs.
Claim 9
Dependent Claim
18 words
A container neck finish according to claim 6 wherein said corrugated outline also extends between said secondary ribs.
Claim 10
Dependent Claim
130 words
A container neck finish and closure combination with said container neck finish including an end sealing surface, closure retaining means, and a tamper band retaining bead spaced axially below said closure retaining means from said end sealing surface, said neck finish having a portion axially below said retaining bead being of a corrugated outline, said closure being carried by said neck finish and including a skirt closed by an end panel, retaining means on said skirt releasably engaging said closure retaining means with said end panel closing said neck finish, and a tamper band depending from said skirt for release from said skirt when said closure is removed from said neck finish, said retaining band being engaged with said corrugated outline portion in a circumferential tensioned state and interlocked relation.
Claim 11
Dependent Claim
130 words
A container neck finish and closure combination with said container neck finish including an end sealing surface, closure retaining means, and a tamper band retaining bead spaced axially below said closure retaining means from said end sealing surface, said neck finish having a portion axially below said retaining bead being of a corrugated outline, said closure being carried by said neck finish and including a skirt closed by an end panel, retaining means on said skirt releasably engaging said closure retaining means with said end panel closing said neck finish, and a tamper band depending from said skirt for release from said skirt when said closure is removed from said neck finish, said retaining band being engaged with said corrugated outline portion in a circumferential tensioned state and interlocked relation.
Claim 12
Dependent Claim
22 words
A combination according to claim 8 wherein said corrugated outline has a maximum diameter less than the diameter of said retaining bead.
Claim 13
Dependent Claim
15 words
A combination according to claim 8 wherein said corrugated outline includes diametrically oppositely facing portions.
Claim 14
Dependent Claim
27 words
A combination according to claim 8 wherein said corrugated outline includes diametrically oppositely facing portions of a wider circumferential spacing than other portions of said corrugated outline.
Claim 15
Dependent Claim
22 words
A combination according to claim 8 wherein said corrugated neck finish portion is tapered and increases in outline towards said retaining bead.
Claim 16
Dependent Claim
52 words
A combination according to claim 8 wherein said corrugated outline includes a pair of diametrically oppositely facing principal ribs, and a secondary rib on each side of each of said principal ribs, each of said secondary ribs having a sloping generally flat face extending circumferentially towards a respective one said primary ribs.
Claim 17
Dependent Claim
16 words
A combination according to claim 13 wherein said corrugated outline also extends between said secondary ribs.
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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) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |