US3018543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chambered sheet metal laminates and method of making
Assignee: Stolle Corp
•
Filing: 1955-07-13
•
Granted: 1962-01-30
•
Expires: 1975-07-13
Abstract
No abstract record available.
Inventors
- 👤 Edward G Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:54
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; F28F3/14; B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21D53/045; Y; Y10; Y10S; Y10S29/00; Y10S29/032; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49805; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF FABRICATING AN INTEGRAL, CHAMBERED SHEET METAL LAMINATE FROM A METAL SANDWICH SHEET CONSTITUTED BY AT LEAST TWO SHEETS OF METAL BONDED TOGETHER BY A BRAZING CORE OVER OPPOSED FACIAL AREAS OF THE SHEETS, SAID METHOD COMPRISING HEATING THE SANDWICH SHEET TO BRAZING TEMPERATURE AND CONFINING PART OF THE SURFACE AREA THEREOF BETWEEN DIES TO MAINTAIN THE BOND BETWEEN THE BRAZING CORE AND THE SHEETS OVER THE AREAS THUS CONFINED AND DISRUPTING THE BRAZING CORE OVER THE REMAINING AREA BY APPLYING FLUID PRESSURE BETWEEN THE METAL SHEETS TO SEPARATE THEM WHILE MAINTAINED THE SHEETS AT BRAZING TEMPERATURE.
Claim 2
Independent Claim
99 words
THE METHOD OF FABRICATING AN INTEGRAL, CHAMBERED SHEET METAL LAMINATE FROM A METAL SANDWICH SHEET CONSTITUTED BY AT LEAST TWO SHEETS OF METAL BONDED TOGETHER BY A BRAZING CORE OVER OPPOSED FACIAL AREAS OF THE SHEETS, SAID METHOD COMPRISING HEATING THE SANDWICH SHEET TO BRAZING TEMPERATURE AND CONFINING PART OF THE SURFACE AREA THEREOF BETWEEN DIES TO MAINTAIN THE BOND BETWEEN THE BRAZING CORE AND THE SHEETS OVER THE AREAS THUS CONFINED AND DISRUPTING THE BRAZING CORE OVER THE REMAINING AREA BY APPLYING FLUID PRESSURE BETWEEN THE METAL SHEETS TO SEPARATE THEM WHILE MAINTAINED THE SHEETS AT BRAZING TEMPERATURE.
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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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |