Patent US3681543A successfully refreshed from Google Patents.
US4113134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can closure
Assignee: Individual
•
Filing: 1977-11-17
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Granted: 1978-09-12
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Expires: 1997-11-17
Abstract
Abstract A container such as a beverage can has a flat top. An opening formed in the top has an inwardly reverted flange which prevents a sharp edge. The closure comprises an inside disc of a diameter greater than the diameter of the opening, and an outside button also of a diameter greater than that of the opening. The button has a raised dome like top, and the button and disc are joined by a narrow stem of a length such that both the button and disc tightly press against the can top and flange, respectively.
Inventors
- 👤 Leo A. Heintzelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:27
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/14; B65D43/18; Y; Y10; Y10S; Y10S220/00; Y10S220/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
In a can type container having a substantially flat top with inner and outer surfaces: the top having a circular opening of a given diameter formed therein; the opening having a surrounding, interior flange joined to the can top by an integral fold portion; a can closure for opening and closing said opening comprising a disc member within the can, said disc member being of a diameter at least greater than the given diameter of the opening; an outer button having a substantially flat lower face, and a dome form upper surface; a narrow stem connecting the disc member and the lower face of the button; and said stem being of a length such that the button lower face is tightly frictionally engaged against the outer surface of can top, and the disc member is tightly frictionally engaged against the flange.
Claim 2
Dependent Claim
141 words
In a can type container having a substantially flat top with inner and outer surfaces: the top having a circular opening of a given diameter formed therein; the opening having a surrounding, interior flange joined to the can top by an integral fold portion; a can closure for opening and closing said opening comprising a disc member within the can, said disc member being of a diameter at least greater than the given diameter of the opening; an outer button having a substantially flat lower face, and a dome form upper surface; a narrow stem connecting the disc member and the lower face of the button; and said stem being of a length such that the button lower face is tightly frictionally engaged against the outer surface of can top, and the disc member is tightly frictionally engaged against the flange.
Claim 3
Dependent Claim
17 words
The invention of claim 1, wherein: said disc member and said button are of the same diameter.
Claim 4
Dependent Claim
20 words
The invention of claim 1, wherein: the can top has a rim; and the opening is located adjacent the rim.
References Cited (Backward Citations)
US3236409A
Cited
US4023703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |