US3592353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing patch for evaporated milk cans
Assignee: Pet Inc
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Filing: 1969-09-02
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Granted: 1971-07-13
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Expires: 1989-09-02
Abstract
Abstract A can end closure with fill opening and a foil patch secured over said opening by means of a plastic adhesive. The filler hole is larger than conventional and the profile of the can lid includes a protective wall around the filling opening defining a well into which the seal is placed to protect it from accidental removal. The principal purpose of the invention is to eliminate the use of solder in covering the filling opening which in the past occasionally has resulted in pellets of solder being deposited in the contents of the can.
Inventors
- 👤 Eldred W Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:12
CPC Classifications
B; B65; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2842; B65B7/2871; B65D; B65D17/00; B65D17/50; B65D17/501; B65D17/502; B65D2517/00; B65D2517/0001; B65D2517/001; B65D2517/0011; B65D2517/0058; B65D2517/0074; B65D2517/0077; B65D2517/50; B65D2517/5002; B65D2517/5008; B65D2517/5024; B65D2517/5027; B65D2517/5029
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the adhesive being flowed between the peripheral edge of the foil and the inner surface of the upstanding wall.
Claim 2
Dependent Claim
103 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the adhesive being flowed between the peripheral edge of the foil and the inner surface of the upstanding wall.
Claim 3
Dependent Claim
125 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the foil being depressed in a circular central area of less diameter than the fill opening and concentric therewith and the adhesive being flowed around the edge of the fill opening to protect the edge from the contents of the can.
Claim 4
Dependent Claim
125 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the foil being depressed in a circular central area of less diameter than the fill opening and concentric therewith and the adhesive being flowed around the edge of the fill opening to protect the edge from the contents of the can.
Claim 5
Dependent Claim
107 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the depressed annular portion of the lid being provided with indentations on its upper surface and the adhesive being anchored within said indentations.
Claim 6
Dependent Claim
107 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the depressed annular portion of the lid being provided with indentations on its upper surface and the adhesive being anchored within said indentations.
Claim 7
Dependent Claim
15 words
The structure of claim 3 wherein the indentations are in the form of curved grooves.
Claim 8
Dependent Claim
199 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the upstanding wall of the lid terminating in an annular flat section which is connected to a second outwardly positioned annular flat section by an upwardly flared connection section, said second outwardly positioned annular flat section being connected to a third still farther outwardly positioned annular flat section by an upwardly flared connection section, said first annular section being on an approximate horizontal level with the depressed annular portion, the third annular section being at an approximate horizontal level with the top of the upstanding wall and the second annular flat section being at an intermediate horizontal level, the third annular section terminating in a raised rim and a downwardly depending skirt surrounding the lid.
Claim 9
Dependent Claim
199 words
In a can having closed sides, top, and bottom, the improvement which comprises a lid having a central fill opening surrounded by an upstanding wall spaced from and defining a depressed annular portion between the wall and the fill opening, a foil cover over the fill opening nested within the upstanding wall and overlying said annular portion, and a thermoplastic adhesive securing the foil cover to the upper surface of the annular portion in a seal engagement to close the fill opening without solder, the upstanding wall of the lid terminating in an annular flat section which is connected to a second outwardly positioned annular flat section by an upwardly flared connection section, said second outwardly positioned annular flat section being connected to a third still farther outwardly positioned annular flat section by an upwardly flared connection section, said first annular section being on an approximate horizontal level with the depressed annular portion, the third annular section being at an approximate horizontal level with the top of the upstanding wall and the second annular flat section being at an intermediate horizontal level, the third annular section terminating in a raised rim and a downwardly depending skirt surrounding the lid.
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |