US2759246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hollow articles
Assignee: Olin Corp
•
Filing: 1954-12-08
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Granted: 1956-08-21
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Expires: 1974-12-08
Abstract
No abstract record available.
Inventors
- 👤 Huntly M Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/14; B21C37/15; B21C37/151; B21C37/155; B21D; B21D26/00; B21D26/02; B21D26/033; B21D26/053; B21D26/059; B21D51/00; B21D53/00; B21D53/02; B21D53/04; B22; B22D; B22D11/00; B23; B23P; B23P15/00; B23P15/04; B23P15/26; F; F28; F28F; F28F1/00; F28F1/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49805; Y10T29/49826; Y10T29/49893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD FOR MAKING HOLLOW ARTICLES FROM SHEET METAL WHICH COMPRISES COATING A METAL SHEET WITH STOPWELD; FOLDING OVER THE LATERAL PORTIONS OF THE METAL SHEET LYING ADJACENT EACH OF A PAIR OF OPPOSITE EDGES THEREOF TO FORM A SECOND LAYER OF METAL WHICH ONLY PARTIALLY OVERLAPS AND LIES SUBSTANTIALLY AGAINST THE REMAINDER OF THE SHEET WITH STOP-WELD SAND WICHED THEREBETWEEN; ASSEMBLING THE FOLDED SHEET WITH A SECOND SHEET WITH THE EXPOSED SURFACE OF THE RESULTING LAPS IN CONTACT WITH THE SECOND SHEET AND WITH STOP-WELD SANDWICHED BETWEEN THE INNER FACES OF THE FIRST SAID SHEET AND THE SECOND SHEET; SECURING THE SHEETS AGAINST RELATIVE SLIPPAGE; HOT ROLLING THE ASSEMBLY TO SIMULTANEOUSLY ELONGATE THE ASSEMBLY, TO FORGE WELD THE LAPS OF THE FOLDED SHEET TO SAID SECOND SHEET AND TO REDUCE THE ASSEMBLY IN THICKNESS UNTIL IT IS SUBSTANTIALLY UNIFORM THROUGHOUT AND THE UNWELDED FACE HAVING STOP-WELD THEREBETWEEN ARE SUBSTANTIALLY IN CONTACT WITH EACH OTHER; AND THEREAFTER EXPANDING THE UNWELDED AREAS BETWEEN THE SHEETS WITH FLUID PRESSURE.
Claim 2
Independent Claim
167 words
A METHOD FOR MAKING HOLLOW ARTICLES FROM SHEET METAL WHICH COMPRISES COATING A METAL SHEET WITH STOPWELD; FOLDING OVER THE LATERAL PORTIONS OF THE METAL SHEET LYING ADJACENT EACH OF A PAIR OF OPPOSITE EDGES THEREOF TO FORM A SECOND LAYER OF METAL WHICH ONLY PARTIALLY OVERLAPS AND LIES SUBSTANTIALLY AGAINST THE REMAINDER OF THE SHEET WITH STOP-WELD SAND WICHED THEREBETWEEN; ASSEMBLING THE FOLDED SHEET WITH A SECOND SHEET WITH THE EXPOSED SURFACE OF THE RESULTING LAPS IN CONTACT WITH THE SECOND SHEET AND WITH STOP-WELD SANDWICHED BETWEEN THE INNER FACES OF THE FIRST SAID SHEET AND THE SECOND SHEET; SECURING THE SHEETS AGAINST RELATIVE SLIPPAGE; HOT ROLLING THE ASSEMBLY TO SIMULTANEOUSLY ELONGATE THE ASSEMBLY, TO FORGE WELD THE LAPS OF THE FOLDED SHEET TO SAID SECOND SHEET AND TO REDUCE THE ASSEMBLY IN THICKNESS UNTIL IT IS SUBSTANTIALLY UNIFORM THROUGHOUT AND THE UNWELDED FACE HAVING STOP-WELD THEREBETWEEN ARE SUBSTANTIALLY IN CONTACT WITH EACH OTHER; AND THEREAFTER EXPANDING THE UNWELDED AREAS BETWEEN THE SHEETS WITH FLUID PRESSURE.
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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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |