Patent US3830399A successfully refreshed from Google Patents.
US3830399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container closure
Assignee: Individual
•
Filing: 1973-07-11
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Granted: 1974-08-20
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Expires: 1993-07-11
Abstract
Abstract An easily removable closure plate for a container, the plate having a first annular line of weakness extending about its peripheral area, and second and third lines of weakness meeting at an initial tear area located between the center and peripheral area of the plate. The second line of weakness extends outwardly along an arc from the initial tear area to the first line of weakness while the third line of weakness extends inwardly along an arc to and around the center of the plate. To sever and remove the plate, an elongated generally triangular flat tab is rotatably mounted to the plate at the initial tear area. The tab is raised to initially sever the plate at the initial tear area, then the tab is rotated to extend outwardly beyond the periphery of the plate with the narrower end of the tab generally aligned with the center of the plate, and then the tab is rotated about its longitudinal axis while revolved about the periphery of the plate to progressively sever the plate along the lines of weakness with the severed portions being progressively wound about the tab. An annular reinforcing rib is provided about the center of the plate while a plurality of radially extending straight reinforcing ribs are also provided in the plate. Indicia is provided on the plate and the tab to indicate the proper rotated position of the tab prior to continued severance and winding of the severed plate portions on the tab. Additionally, the tab is provided with a recess along one side for guiding the severed wound portions thereon. Also, the opposite ends of the tab are bent upwardly away from the plate to facilitate rotation of the tab without obstruction.
Inventors
- 👤 F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:04
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
218 words
For use on a container; a movable closure plate adapted to be incorporated as a wall or other part of a container to close the interior thereof, said plate having a first line of weakness spaced from and extending continuously around a peripheral area of said plate, an initial tear area located on the plate between the central portion of the plate and the first line of weakness, said plate having a second line of weakness extending from said initial tear area outwardly to said first line of weakness, said plate having a third line of weakness extending from said initial tear area to the central area of the plate and terminating at said central area of said plate, and a tab attached to said closure plate at said initial tear area for severing portions of said plate at said initial tear area upon raising the tab from the plate, said second and third lines of weakness being configured such that after initially severing the plate at said initial tear area the tab may then be wound about a longitudinal axis of the tab and revolved about the closure to sever additional portions of the plate along said first, second and third lines of weakness and to progressively wind said severed portions of the plate about said tab.
Claim 2
Dependent Claim
218 words
For use on a container; a movable closure plate adapted to be incorporated as a wall or other part of a container to close the interior thereof, said plate having a first line of weakness spaced from and extending continuously around a peripheral area of said plate, an initial tear area located on the plate between the central portion of the plate and the first line of weakness, said plate having a second line of weakness extending from said initial tear area outwardly to said first line of weakness, said plate having a third line of weakness extending from said initial tear area to the central area of the plate and terminating at said central area of said plate, and a tab attached to said closure plate at said initial tear area for severing portions of said plate at said initial tear area upon raising the tab from the plate, said second and third lines of weakness being configured such that after initially severing the plate at said initial tear area the tab may then be wound about a longitudinal axis of the tab and revolved about the closure to sever additional portions of the plate along said first, second and third lines of weakness and to progressively wind said severed portions of the plate about said tab.
Claim 3
Dependent Claim
62 words
The closure plate defined in claim 1 wherein said second line of weakness extends on an arc from said initial tear area outwardly to said first line of weakness, and said third line of weakness extends on an arc from said initial tear area generally inwardly to said center area in the same general angular direction as said second line of weakness.
Claim 4
Dependent Claim
21 words
The closure plate defined in claim 2 wherein said third line of weakness extends around said central area of the plate.
Claim 5
Dependent Claim
44 words
The closure plate defined in claim 3 wherein said plate contains radially extending reinforcement means at angularly spaced locations about said plate, and reinforcement means extending around and in close proximity to the center of the plate inwardly of said third line of weakness.
Claim 6
Dependent Claim
37 words
The closure plate defined in claim 3 wherein said third line of weakness extends approximately 360* about the center of the plate and terminates in closely spaced relation to a portion of said third line of weakness.
Claim 7
Dependent Claim
46 words
The closure plate defined in claim 4 wherein said radially extending reinforcement means are straight ribs formed in the plate and wherein said reinforcement means about the center is a circular rib, said straight ribs and circular ribs being located on the underside of said plate.
Claim 8
Dependent Claim
22 words
The closure plate defined in claim 1 wherein said plate contains reinforcement means extending radially at angularly spaced locations on the plate.
Claim 9
Dependent Claim
86 words
The closure plate defined in claim 7 including means rotatably mounting said tab to said closure plate at said initial tear area and wherein said tab initially extends transversely across the plate such that after the closure is initially opened, at said initial tear area, the tab is rotatable about said means in a plane generally parallel to said plate to project a portion of the tab beyond the plate to be gripped for winding the tab to continue opening of the closure plate as aforesaid.
Claim 10
Dependent Claim
32 words
The closure plate defined in claim 1 wherein said tab is defined along its length by opposite side edges converging beyond the point of attachment of said tab to said closure plate.
Claim 11
Dependent Claim
33 words
The closure plate defined in claim 9 wherein at least one of the side edges of said tab is recessed for receiving and guiding thereon in coiled arrangement severed portions of said plate.
Claim 12
Dependent Claim
32 words
The closure plate defined in claim 9 wherein said tab has a length at least equal to the greatest distance between the center of the plate and the first line of weakness.
Claim 13
Dependent Claim
29 words
The closure plate defined in claim 11 wherein said tab has an overall length greater than one-half the diametrical distance of said plate between said first line of weakness.
Claim 14
Dependent Claim
91 words
The closure plate defined in claim 1 further including means rotatably mounting said tab to said closure plate at Said initial tear area and wherein said tab initially extends transversely across the plate such that after the closure is initially opened, the tab is rotatable about said means in a plane generally parallel to said plate to project a portion of the tab beyond the plate to be gripped for winding the tab to continue opening of the closure plate along said first, second and third lines of weakness as aforesaid.
Claim 15
Dependent Claim
48 words
The closure plate defined in claim 13 further including indicia means on said tab and said closure plate for indicating the proper rotated position of said tab about said first means for continuing severance of the plate along said first, second and third lines of weakness as aforesaid.
Claim 16
Dependent Claim
39 words
The closure plate defined in claim 14 wherein said indicia means includes a protrusion on said tab and an indentation on said closure plate adapted to be placed in registry to indicate the proper rotated position of said tab.
Claim 17
Dependent Claim
210 words
For use on a container; a removable closure adapted to be incorporated as a wall or other portion of a container comprising a closure plate having a first line of weakness spaced from and extending continuously around a peripheral area of the plate, an initial tear area located on the plate between the center of the plate and the first line of weakness, said plate having a second line of weakness extending from said initial tear area outwardly to said first line of weakness, said plate having a third line of weakness extending from said initial tear area towards the center of the plate and then around the center of the plate and terminating short of an unweakened area on the plate, and a tab attached to said closure plate at said initial tear area for severing portions of said plate at said initial tear area and subsequently along said first, second and third lines of weakness, said first, second and third lines of weakness being arranged such that should the plate be severed throughout said first line of weakness, the entire plate may be removed as a unit by said tab by virtue of the discontinuance of said third line of weakness and the unweakened portion of the plate.
Claim 18
Dependent Claim
210 words
For use on a container; a removable closure adapted to be incorporated as a wall or other portion of a container comprising a closure plate having a first line of weakness spaced from and extending continuously around a peripheral area of the plate, an initial tear area located on the plate between the center of the plate and the first line of weakness, said plate having a second line of weakness extending from said initial tear area outwardly to said first line of weakness, said plate having a third line of weakness extending from said initial tear area towards the center of the plate and then around the center of the plate and terminating short of an unweakened area on the plate, and a tab attached to said closure plate at said initial tear area for severing portions of said plate at said initial tear area and subsequently along said first, second and third lines of weakness, said first, second and third lines of weakness being arranged such that should the plate be severed throughout said first line of weakness, the entire plate may be removed as a unit by said tab by virtue of the discontinuance of said third line of weakness and the unweakened portion of the plate.
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |