← Back to Patent Explorer
US4722447A Expired / Lapsed US ⏱️ 0.0 years remaining

Closure assembly with two tamper indicators

Assignee: Portola Packaging Inc
•
Filing: 1986-11-20
•
Granted: 1988-02-02
•
Expires: 2006-11-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A tamper indicating container and closure combination in which the container has configurations about the neck thereof registering with configurations on a separate portion of a closure engageable therewith, which separate portion is separated from the closure when the closure is removed from the container. A sealing disc is positioned in the closure by limited frictional engagement therewith so that when the closure is removed from the container, the separable portion of the closure remains on the container as an indicator and the sealing disc remains in sealing relation on the container and must be wholly or partially removed by a tab thereon to gain access to the contents of the container whereby the sealing disc and tab forms a second indicator.

Inventors

  • 👤 Robert E. Crisci

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 19:29
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3404; B65D41/3409; B65D51/00; B65D51/18; B65D51/20; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0015; B65D2251/0068; B65D2251/0093

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 86 words
In the combination of a container having an inturned flange defining a top opening therein and a closure cap, a sealing disc in said cap and means on said sealing disc for removably adhering said sealing disc to said inturned flange, the improvement comprising; radially and circumferentially extending tabs on said sealing disc, at least one of said tabs being partially separated from said sealing disc by a slit whereby said tab forms an elongated handle for the removal of said sealing disc from said container.
Claim 2
Dependent Claim 86 words
In the combination of a container having an inturned flange defining a top opening therein and a closure cap, a sealing disc in said cap and means on said sealing disc for removably adhering said sealing disc to said inturned flange, the improvement comprising; radially and circumferentially extending tabs on said sealing disc, at least one of said tabs being partially separated from said sealing disc by a slit whereby said tab forms an elongated handle for the removal of said sealing disc from said container.
Claim 3
Dependent Claim 36 words
The improvement defined in claim 1 wherein said sealing disc is formed of at least three layers of different materials, at least one of which is impervious to liquids and wherein said tabs are formed thereon.
Claim 4
Dependent Claim 47 words
The improvement defined in claim 1 wherein an elongated portion of one of said radially extending tabs on said sealing disc is separated from the sealing disc by a circumferentially extending slit whereby said elongated portion of said tab forms a handle for removing said sealing disc.
Claim 5
Dependent Claim 14 words
The improvement of claim 1 wherein said tabs are arranged in opposite disposed pairs.

References Cited (Backward Citations)

US2180199A Cited
US2373847A Cited
US2937481A Cited
US3352268A Cited
US3501042A Cited
US3504818A Cited
GB1255739A Cited
US3805993A Cited
US3812994A Cited
US4171084A Cited
US4209126A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-02-01 1991-08-03 1992-02-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-02-01 1995-08-03 1996-02-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-02-01 1999-08-03 2000-02-02 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag