US3974931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottle cap
Assignee: American Flange and Manufacturing Co Inc
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Filing: 1975-05-29
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Granted: 1976-08-17
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Expires: 1995-05-29
Abstract
Abstract A tear-off convenience bottle cap formed of lightweight sheet metal having a circular top panel surrounded by a cylindrical skirt. An annular sealing gasket disposed within said cap at the juncture of the top and skirt. 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 continue part way about the periphery of the cap top panel protected against exposure to the bottle contents by the annular sealing gasket and are then directed radially outwardly into the cap skirt opposite the pull member, thus minimizing the pull force required to dislodge the cap from the underlying bottle finish at the termination of the tearing action.
Inventors
- 👤 Thomas G. Moller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:18
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/40; B65D41/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
162 words
A tear-off convenience bottle 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 ring shaped gripping ear formed as an integral part of said skirt extending downwardly and radially outwardly from said free edge, a tearing zone commencing at said skirt free edge on either side of said gripping ear and extending upwardly across said skirt in an outwardly diverging pattern, each of said tearing zones blending into a circular path lying in close proximity to the periphery of said cap top panel at the commencement of said radiused juncture portion, said tearing zones extending rearwardly from said gripping ear to a point substantially beyond the midsection of said cap top panel and flaring radially outwardly and terminating in close proximity to said cap skirt, whereby the major portion of said cap top panel is separated from said cap skirt upon opening.
Claim 2
Dependent Claim
162 words
A tear-off convenience bottle 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 ring shaped gripping ear formed as an integral part of said skirt extending downwardly and radially outwardly from said free edge, a tearing zone commencing at said skirt free edge on either side of said gripping ear and extending upwardly across said skirt in an outwardly diverging pattern, each of said tearing zones blending into a circular path lying in close proximity to the periphery of said cap top panel at the commencement of said radiused juncture portion, said tearing zones extending rearwardly from said gripping ear to a point substantially beyond the midsection of said cap top panel and flaring radially outwardly and terminating in close proximity to said cap skirt, whereby the major portion of said cap top panel is separated from said cap skirt upon opening.
Claim 3
Dependent Claim
17 words
A tear-off convenience bottle cap as in claim 1, including stiffening means formed in said gripping ear.
Claim 4
Dependent Claim
170 words
A tear-off convenience bottle 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 downwardly and radially outwardly from said free edge, a tearing zone commencing at said skirt free edge on either side of said gripping ear and extending upwardly across said skirt in an outwardly diverging pattern, each of said tearing zones blending into a path lying in close proximity to the periphery of said cap top panel, a sealing gasket disposed within said cap so as to completely overlie said peripheral paths of said tearing zones, said tearing zones extending rearwardly from said gripping ear to a point substantially beyond the midsection of said cap top panel and flaring radially outwardly and terminating in close proximity to said cap skirt whereby the major portion of said cap top panel is separated from said cap skirt upon opening.
Claim 5
Dependent Claim
170 words
A tear-off convenience bottle 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 downwardly and radially outwardly from said free edge, a tearing zone commencing at said skirt free edge on either side of said gripping ear and extending upwardly across said skirt in an outwardly diverging pattern, each of said tearing zones blending into a path lying in close proximity to the periphery of said cap top panel, a sealing gasket disposed within said cap so as to completely overlie said peripheral paths of said tearing zones, said tearing zones extending rearwardly from said gripping ear to a point substantially beyond the midsection of said cap top panel and flaring radially outwardly and terminating in close proximity to said cap skirt whereby the major portion of said cap top panel is separated from said cap skirt upon opening.
Claim 6
Dependent Claim
21 words
A tear-off convenience bottle cap as in claim 3, said sealing gasket being adhesively affixed to the interior of said cap.
Claim 7
Dependent Claim
153 words
A tear-off convenience bottle 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 downwardly and radially outwardly from said free edge, a tearing zone commencing at said skirt free edge on either side of said gripping ear and extending upwardly across said skirt in an outwardly diverging pattern, each of said tearing zones blending into a path lying in close proximity to the periphery of said cap top panel, said tearing zones extending rearwardly from said gripping ear so as to partially surround said cap top panel and an annular sealing gasket adhesively affixed to said cap interior so as to completely overlie said tearing zones along said path whereby removal of said cap causes tearing of said gasket along said path.
Claim 8
Dependent Claim
153 words
A tear-off convenience bottle 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 downwardly and radially outwardly from said free edge, a tearing zone commencing at said skirt free edge on either side of said gripping ear and extending upwardly across said skirt in an outwardly diverging pattern, each of said tearing zones blending into a path lying in close proximity to the periphery of said cap top panel, said tearing zones extending rearwardly from said gripping ear so as to partially surround said cap top panel and an annular sealing gasket adhesively affixed to said cap interior so as to completely overlie said tearing zones along said path whereby removal of said cap causes tearing of said gasket along said path.
Claim 9
Dependent Claim
23 words
A tear-off convenience closure as in claim 5, the mass of said sealing gasket being disposed radially outwardly of said tearing zone path.
Claim 10
Dependent Claim
167 words
A tear-off convenience bottle 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 path lying in close proximity to the periphery of said cap top panel, said tearing zone extending rearwardly from said gripping ear to at least partially surround said cap top panel and an annular sealing gasket adhesively affixed to said cap interior so as to completely overlie said tearing zone along said path with the mass of said sealing gasket being disposed radially outwardly of said tearing zone path and leaving a thinned out section of sealing gasket overlying said tearing zone path whereby removal of said cap causes tearing of said gasket along said path.
Claim 11
Dependent Claim
167 words
A tear-off convenience bottle 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 path lying in close proximity to the periphery of said cap top panel, said tearing zone extending rearwardly from said gripping ear to at least partially surround said cap top panel and an annular sealing gasket adhesively affixed to said cap interior so as to completely overlie said tearing zone along said path with the mass of said sealing gasket being disposed radially outwardly of said tearing zone path and leaving a thinned out section of sealing gasket overlying said tearing zone path whereby removal of said cap causes tearing of said gasket along said path.
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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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |