US4003488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tear open bottle cap
Assignee: American Flange and Manufacturing Co Inc
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Filing: 1976-03-15
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Granted: 1977-01-18
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Expires: 1996-03-15
Abstract
Abstract A tear open bottle cap formed of lightweight sheet metal having a circular top panel surrounded by a cylindrical skirt connected thereto by a radiused juncture portion. An integrally formed pull member extends away from the skirt edge with a score line commencing at either side of the pull member extending upwardly across the cap skirt. The score lines diverge outwardly away from each other within the radiused juncture portion and continue part way about the periphery of the cap top panel in a circular path. The terminal portions of the score lines extend outwardly into the cap skirt at spaced positions opposite the pull member. An annular sealing gasket is disposed within said cap top so as to lie just radially inwardly of the circular scoring.
Inventors
- 👤 Thomas G. Moller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/40; B65D41/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A lightweight metal tear-off cap comprising a circular top panel surrounded by a cylindrical skirt terminating in a lowermost free edge, a radiused juncture portion connecting said top panel and said skirt, a gripping ear formed as an integral part of said skirt extending from said free edge, a tearing zone commencing at said skirt free edge adjacent said gripping ear and extending upwardly across said skirt and blending into a circular path lying within said radiused juncture portion, said tearing zone extending rearwardly from said gripping ear to at least partially surround said cap top panel and a sealing gasket adhesively affixed to said cap interior disposed radially inwardly of said tearing zone along said path whereby tearing along said exposed tearing zone independently of said gasket causes the major portion of said cap top panel to be separated from said cap skirt upon opening.
Claim 2
Dependent Claim
146 words
A lightweight metal tear-off cap comprising a circular top panel surrounded by a cylindrical skirt terminating in a lowermost free edge, a radiused juncture portion connecting said top panel and said skirt, a gripping ear formed as an integral part of said skirt extending from said free edge, a tearing zone commencing at said skirt free edge adjacent said gripping ear and extending upwardly across said skirt and blending into a circular path lying within said radiused juncture portion, said tearing zone extending rearwardly from said gripping ear to at least partially surround said cap top panel and a sealing gasket adhesively affixed to said cap interior disposed radially inwardly of said tearing zone along said path whereby tearing along said exposed tearing zone independently of said gasket causes the major portion of said cap top panel to be separated from said cap skirt upon opening.
Claim 3
Dependent Claim
27 words
A lightweight metal tear open cap as in claim 1 including a tearing zone commencing at said skirt free edge on either side of said gripping ear.
Claim 4
Dependent Claim
29 words
A lightweight metal tear open cap as in claim 1 wherein said sealing gasket extends radially outwardly to a position in close proximity to said circular tearing zone path.
Claim 5
Dependent Claim
20 words
A lightweight metal tear open cap as in claim 1 including a concentric depressed embossment in said cap top panel.
Claim 6
Dependent Claim
28 words
A lightweight metal tear open cap as in claim 4 wherein a gasket receiving channel is formed by said embossment about the periphery of said cap top panel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |