US4657153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-evident closure
Assignee: Anchor Hocking Packaging Co
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Filing: 1985-11-18
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Granted: 1987-04-14
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Expires: 2005-11-18
Abstract
Abstract A tamper-evident closure cap is described which is easily applied to a cantilever and which thereafter may not be removed without the separation of a tamper indicating band. Locking tabs on the tamper indicating band are hinged to the band with and over-center hinge means for facilitating the effective tab position on a sealed container.
Inventors
- 👤 Thomas H. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:00
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3423; B65D41/3428
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A molded plastic tamper-indicating closure for sealing a container having closure engaging members on the container neck and an annular bead therebelow comprising the combination of: a cup-like shell with a cover and a depending skirt; means on said shell for engaging the closure engaging members; a circular tear strip releasably attached to the lower edge of said skirt; a plurality of separate radially inwardly projecting tabs each being hingedly connected by a snap-action arcuate over-center hinge means at the lower edge of said tear strip for locking engagement between the container bead and said tabs; and said hinge means comprising a plurality of spaced hinges between said tear strip and said tabs and separated from each other by arcuate slots.
Claim 2
Dependent Claim
121 words
A molded plastic tamper-indicating closure for sealing a container having closure engaging members on the container neck and an annular bead therebelow comprising the combination of: a cup-like shell with a cover and a depending skirt; means on said shell for engaging the closure engaging members; a circular tear strip releasably attached to the lower edge of said skirt; a plurality of separate radially inwardly projecting tabs each being hingedly connected by a snap-action arcuate over-center hinge means at the lower edge of said tear strip for locking engagement between the container bead and said tabs; and said hinge means comprising a plurality of spaced hinges between said tear strip and said tabs and separated from each other by arcuate slots.
Claim 3
Dependent Claim
26 words
The closure as claimed in claim 1 in which said tabs comprise three tabs each having a hinge means with an arc of about 100 degrees.
Claim 4
Dependent Claim
33 words
The closure as claimed in claim 1 in which said tabs comprise a plurality of tabs each having a hinge means with an arcuate length of about 60 to 100 degrees of arc.
Claim 5
Dependent Claim
38 words
The closure as claimed in claim 1 in which said tabs have an original molded position downwardly from the plane of the circular tear strip and a second over-center position extending inwardly and upwardly from the said plane.
References Cited (Backward Citations)
US4196818A
Cited
US4394918A
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US4478343A
Cited
US4506795A
Cited
US4511054A
Cited
US4550844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |