Patent US3108361A successfully refreshed from Google Patents.
US3108361A
Expired / Lapsed
US
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Fabrication of hollow articles
Assignee: Olin Corp
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Filing: 1956-03-20
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Granted: 1963-10-29
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Expires: 1976-03-20
Abstract
No abstract record available.
Inventors
- 👤 Neel Robert Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21D53/045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49369; Y10T29/49371
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
IN A PROCESS FOR FABRICATING A HOLLOW PANEL HAVING A SMOOTH SIDE AND AN OPPOSITE SIDE HAVING PROTRUSIONS FORMED BY DISTENTIONS CONFORMING TO THE HOLLOW PORTION OF SAID PANEL, THE STEPS COMPRISING FORMING A BLANK BY SUPERIMPOSING A FIRST SHEET ON A SECOND SHEET HAVING AN ELASTIC LIMIT DIFFERENTIABLE FROM THE ELASTIC LIMIT OF SAID FIRST SHEET, JOINING A PORTION OF SAID SHEETS TOGETHER TO DEFINE AN ENCLOSED UNJOINED AREA BETWEEN ADJACENT SURFACES OF SAID SHEETS, EXPANDING SAID BLANK TO FORM A PANEL BY INJECTING WITHIN SAID UNJOINED AREA FLUID PRESSURE OF SUFFICIENT MAGNITUDE TO DISTEND ONE OF SAID SHEETS HAVING THE LOWER ELASTIC LIMIT BUT OF INSUFFICIENT MAGNITUDE TO DISTEND THE OTHER OF SAID SHEETS HAVING THE HIGHER ELASTIC LIMIT, SAID ONE SHEET WITH SAID LOWER ELASTIC LIMIT HAVING A THICKNESS RELATIVE TO THE THICKNESS OF SAID OTHER SHEET HAVING THE HIGHER ELASTIC LIMIT SUCH THAT SAID ONE SHEET HAVING THE LOWER ELASTIC LIMIT WILL DISTEND AT A LOWER FLUID PRESSURE INJECTED INTO SAID UNJOINED AREA THAN SAID OTHER SHEET HAVING THE HIGHER ELASTIC LIMIT WHEREBY SAID PANEL IS PERMANENTLY DISTENDED ON ONE SIDE AND SMOOTH ON THE OTHER SIDE.
Claim 2
Dependent Claim
191 words
IN A PROCESS FOR FABRICATING A HOLLOW PANEL HAVING A SMOOTH SIDE AND AN OPPOSITE SIDE HAVING PROTRUSIONS FORMED BY DISTENTIONS CONFORMING TO THE HOLLOW PORTION OF SAID PANEL, THE STEPS COMPRISING FORMING A BLANK BY SUPERIMPOSING A FIRST SHEET ON A SECOND SHEET HAVING AN ELASTIC LIMIT DIFFERENTIABLE FROM THE ELASTIC LIMIT OF SAID FIRST SHEET, JOINING A PORTION OF SAID SHEETS TOGETHER TO DEFINE AN ENCLOSED UNJOINED AREA BETWEEN ADJACENT SURFACES OF SAID SHEETS, EXPANDING SAID BLANK TO FORM A PANEL BY INJECTING WITHIN SAID UNJOINED AREA FLUID PRESSURE OF SUFFICIENT MAGNITUDE TO DISTEND ONE OF SAID SHEETS HAVING THE LOWER ELASTIC LIMIT BUT OF INSUFFICIENT MAGNITUDE TO DISTEND THE OTHER OF SAID SHEETS HAVING THE HIGHER ELASTIC LIMIT, SAID ONE SHEET WITH SAID LOWER ELASTIC LIMIT HAVING A THICKNESS RELATIVE TO THE THICKNESS OF SAID OTHER SHEET HAVING THE HIGHER ELASTIC LIMIT SUCH THAT SAID ONE SHEET HAVING THE LOWER ELASTIC LIMIT WILL DISTEND AT A LOWER FLUID PRESSURE INJECTED INTO SAID UNJOINED AREA THAN SAID OTHER SHEET HAVING THE HIGHER ELASTIC LIMIT WHEREBY SAID PANEL IS PERMANENTLY DISTENDED ON ONE SIDE AND SMOOTH ON THE OTHER SIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |