US3135045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming articles from thin sheet material
Assignee: ThyssenKrupp Budd Co
•
Filing: 1961-04-19
•
Granted: 1964-06-02
•
Expires: 1981-04-19
Abstract
No abstract record available.
Inventors
- 👤 Harry P Schane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:43
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF COLD FORMING A THIN SHELL HEMISPHERE OF CONSTANT THICKNESS, AREA BONDING A THIN SHEET OF STAINLESS STEEL HAVING SMALL VARIATIONS IN THE WALL THICKNESS TO A RELATIVE THICK SHEET OF CARBON STEEL HAVING SMALL VARIATIONS IN THE WALL THICKNESS TO PROVIDE A COMPOSITE SHEET OF COMBINED RANDOM WALL THICKNESS, DRAWING SAID COMPOSITE SHEET INTO A HEMISPHERE HAVING A DIFFERENT COMBINED RANDOM WALL THICKNESS, REMOVING SAID CARBON STEEL LEAVING A THIN SHELL STAINLESS STEEL HEMISPHERE OF WALL THICKNESS EQUAL TO THE ORIGINAL THICKNESS OF THE STAINLESS STEEL SHEET.
Claim 2
Independent Claim
90 words
THE METHOD OF COLD FORMING A THIN SHELL HEMISPHERE OF CONSTANT THICKNESS, AREA BONDING A THIN SHEET OF STAINLESS STEEL HAVING SMALL VARIATIONS IN THE WALL THICKNESS TO A RELATIVE THICK SHEET OF CARBON STEEL HAVING SMALL VARIATIONS IN THE WALL THICKNESS TO PROVIDE A COMPOSITE SHEET OF COMBINED RANDOM WALL THICKNESS, DRAWING SAID COMPOSITE SHEET INTO A HEMISPHERE HAVING A DIFFERENT COMBINED RANDOM WALL THICKNESS, REMOVING SAID CARBON STEEL LEAVING A THIN SHELL STAINLESS STEEL HEMISPHERE OF WALL THICKNESS EQUAL TO THE ORIGINAL THICKNESS OF THE STAINLESS STEEL SHEET.
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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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |