US3693828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seamless steel containers
Assignee: Crown Cork and Seal Co Inc
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Filing: 1970-07-22
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Granted: 1972-09-26
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Expires: 1990-07-22
Abstract
Abstract A steel beverage or beer can of the seamless type having a unitary body including seamless side walls and an integral bottom with an end double seamed to the top of the side walls. The bottom comprises an outer frustoconical surface extending downwardly and inwardly from the side walls, an annular bead for supporting the can, an inner frustoconical surface extending upwardly and inwardly from the annular supporting bead, and a recessed domed central panel extending inwardly and upwardly along the axis of the can from the second frustoconical surface.
Inventors
- 👤 Raymond H P Kneusel
- 👤 Vinson S Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:34
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/06; B05B13/0645; B05B13/0681; B65; B65D; B65D1/00; B65D1/12; B65D1/14; B65D1/16; B65D1/165
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
223 words
An internal pressure resistant steel container comprising a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof and further comprising an end double seamed to the upper extremity of the side walls, said bottom comprising an outer substantially frustoconical surface extending downwardly and inwardly from said side walls toward the axis of said container at an angle in the range of 30* to 50*, a bead integrally connected with and extending downwardly from said outer frustoconical surface and providing an annular supporting surface for said can, said annular surface having a radius less than 90 percent of the container radius at said side walls, an inner substantially frustoconical surface integrally connected with and extending upwardly and inwardly from said bead toward the axis of said container at an angle in the range of 5* to 20*, the height of said inner frustoconical surface being less than but more than half the height of said outer frustoconical surface, and a downwardly concave central panel extending upwardly and inwardly from the peripheral edge of said central panel, said peripheral edge being integrally connected to the upper edge of said inner frustoconical surface, said central panel extending substantially above the uppermost portion of said outer frustoconical surface at the axis of said container.
Claim 2
Dependent Claim
223 words
An internal pressure resistant steel container comprising a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof and further comprising an end double seamed to the upper extremity of the side walls, said bottom comprising an outer substantially frustoconical surface extending downwardly and inwardly from said side walls toward the axis of said container at an angle in the range of 30* to 50*, a bead integrally connected with and extending downwardly from said outer frustoconical surface and providing an annular supporting surface for said can, said annular surface having a radius less than 90 percent of the container radius at said side walls, an inner substantially frustoconical surface integrally connected with and extending upwardly and inwardly from said bead toward the axis of said container at an angle in the range of 5* to 20*, the height of said inner frustoconical surface being less than but more than half the height of said outer frustoconical surface, and a downwardly concave central panel extending upwardly and inwardly from the peripheral edge of said central panel, said peripheral edge being integrally connected to the upper edge of said inner frustoconical surface, said central panel extending substantially above the uppermost portion of said outer frustoconical surface at the axis of said container.
Claim 3
Dependent Claim
28 words
The container of claim 1 wherein the radius of curvature of said downwardly concaved central panel is no greater than twice said radius of said annular supporting surface.
Claim 4
Dependent Claim
73 words
The container of claim 2 wherein said upper extremity of said side walls is necked-in such that the maximum outside diameter of said double seamed end is less than the outside diameter of said cylindrical side walls, said angle of said outer frustoconical surface with respect to the axis of said container permitting said annular supporting surface to rest upon and be supported by the central panel portion of said double seamed end.
Claim 5
Dependent Claim
208 words
A pressure resistant steel container capable of withstanding a substantial internal pressure without eversion comprising a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof and an end double seamed to a necked-in portion of the side walls at the upper extremity, the maximum outside diameter of the end being substantially less than the diameter of said cylindrical side walls beneath said end, said bottom comprising an outer surface extending downwardly and inwardly from said side walls toward the axis of saiD container, a bead integrally connected with and extending downwardly from said outer surface providing an annular supporting surface for said can, said outer surface extending sufficiently inwardly to permit said annular supporting surface to rest upon the substantially planar surface of the central panel of an end on a like container, an inner surface integrally connected with said bead and extending upwardly and inwardly from said annular bead toward the axis of said container, and a downwardly concave central panel integrally connected with said inner surface and extending upwardly and inwardly from said inner surface to the axis of said container, said central panel extending above the uppermost portion of said outer surface.
Claim 6
Dependent Claim
208 words
A pressure resistant steel container capable of withstanding a substantial internal pressure without eversion comprising a unitary body having seamless substantially cylindrical side walls and a bottom integrally formed with the side walls at the lower extremity thereof and an end double seamed to a necked-in portion of the side walls at the upper extremity, the maximum outside diameter of the end being substantially less than the diameter of said cylindrical side walls beneath said end, said bottom comprising an outer surface extending downwardly and inwardly from said side walls toward the axis of saiD container, a bead integrally connected with and extending downwardly from said outer surface providing an annular supporting surface for said can, said outer surface extending sufficiently inwardly to permit said annular supporting surface to rest upon the substantially planar surface of the central panel of an end on a like container, an inner surface integrally connected with said bead and extending upwardly and inwardly from said annular bead toward the axis of said container, and a downwardly concave central panel integrally connected with said inner surface and extending upwardly and inwardly from said inner surface to the axis of said container, said central panel extending above the uppermost portion of said outer surface.
Claim 7
Dependent Claim
30 words
The container of claim 4 wherein said outer surface is substantially frustoconical forming an angle in the range of 30* to 50* with respect to the axis of said container.
Claim 8
Dependent Claim
32 words
The container of claim 4 wherein said inner surface is a substantially frustoconical surface forming an angle in the range of 10* to 20* with respect to the axis of said container.
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |