US4066180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frangible cap for bottles
Assignee: Individual
•
Filing: 1976-12-09
•
Granted: 1978-01-03
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Expires: 1996-12-09
Abstract
Abstract A frangible sealing cap for a bottle neck comprises: A. a plastic cup having a top cover and a depending annular skirt, the cover and skirt having thin walls, the skirt being free of annularly outward bulge structure, B. a plastic pull tab integral with the skirt and depending to a level below the lowermost level of the skirt, and C. there being two weakening score lines extending into, but incompletely through the skirt from the outer surface thereof, said lines extending upwardly toward the top cover from points proximate the junctures of the skirt with opposite edges of the tab.
Inventors
- 👤 Alejandro C. Sanchez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:42
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/52
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
A frangible sealing cap for a bottle neck, comprising: a. a plastic cup having a top cover and a depending annular skirt, the cover and skirt having thin walls, the skirt being free of annularly outward bulge structure, said skirt and cover each having wall thickness between about 0.010 and 0.030 inches, b. a plastic pull tab integral with the skirt and depending to a level below the lowermost level of the skirt, and C. there being two weakening score lines extending into, but incompletely through the skirt from the outer surface thereof, said lines extending upwardly toward the top cover from points proximate the junctures of the skirt with opposite edges of the tab, d. the skirt being thickened at circularly spaced locations to define narrow reinforcing protrusions which are elongated in directions toward the top cover and which stand outwardly from the outerside of the skirt, the protrusions confined to the lower half of the skirt, said score lines located adjacent two of said protrusions but at the inner sides thereof closest the main extent of the tab, whereby the skirt material between the score lines is uninterrupted by any of said protrusions.
Claim 2
Dependent Claim
195 words
A frangible sealing cap for a bottle neck, comprising: a. a plastic cup having a top cover and a depending annular skirt, the cover and skirt having thin walls, the skirt being free of annularly outward bulge structure, said skirt and cover each having wall thickness between about 0.010 and 0.030 inches, b. a plastic pull tab integral with the skirt and depending to a level below the lowermost level of the skirt, and C. there being two weakening score lines extending into, but incompletely through the skirt from the outer surface thereof, said lines extending upwardly toward the top cover from points proximate the junctures of the skirt with opposite edges of the tab, d. the skirt being thickened at circularly spaced locations to define narrow reinforcing protrusions which are elongated in directions toward the top cover and which stand outwardly from the outerside of the skirt, the protrusions confined to the lower half of the skirt, said score lines located adjacent two of said protrusions but at the inner sides thereof closest the main extent of the tab, whereby the skirt material between the score lines is uninterrupted by any of said protrusions.
Claim 3
Dependent Claim
36 words
The cap of claim 1 wherein said cover defines an annular, upwardly protruding bulge spaced inwardly from radially outermost portions of the cover which are outwardly convex and merge downwardly with uppermost portions of the skirt.
Claim 4
Dependent Claim
30 words
The cap of claim 1 which consists of molded polyethylene, and the circular spacing between successive pairs of all said protrusions is about equal to the width of said tab.
Claim 5
Dependent Claim
18 words
The cap of claim 1 which consists of molded polyethylene having a density between about 0.910 and 0.965.
Claim 6
Dependent Claim
28 words
The cap of claim 1 wherein said skirt is frusto-conical, tapering toward the top cover, whereby multiple of said caps are fully and freely stackable in nesting relation.
Claim 7
Dependent Claim
29 words
The cap of claim 1 wherein the cap defines a central axis and axial radial planes define intersections with the skirt which are in the form of straight lengths.
Claim 8
Dependent Claim
21 words
The combination that includes a bottle having a neck over which said cap of claim 1 is stretchably and sealingly applied.
Claim 9
Dependent Claim
10 words
The combination of claim 7 wherein said neck is straight.
Claim 10
Dependent Claim
37 words
The combination of claim 7 wherein said neck defines a local circular bulge spaced below the top of the neck and over which said cap is sealingly stretched, the protrusions located below the level of said bulge.
References Cited (Backward Citations)
US1477139A
Cited
GB313218A
Cited
US2808168A
Cited
US2934232A
Cited
US3326401A
Cited
US3866783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |