US3158122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brazing electron tube cooling fins
Assignee: EITEL MC CULLOUGH Inc
•
Filing: 1960-09-15
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Granted: 1964-11-24
•
Expires: 1980-09-15
Abstract
No abstract record available.
Inventors
- 👤 Give Louis P De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:12
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/225; B23; B23K; B23K1/00; B23K1/0008; B23K1/0012; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE METHOD OF FORMING A COOLING FIN STRUCTURE WHICH COMPRISES FORMING A CORRUGATED SILVER PLATED COPPER SHEET, BENDING SAID SHEET INTO CYLINDRICAL FORM AND PLACINT IT INTO A CYLINDRICAL COPPER HSELL, URGING A COPPER ANODE INTO THE CYLINDRICAL OPENING DEFINED BY THE CORRUGATIONS SO THAT THE OUTER RIDGES OF THE CORRUGATIONS ARE IN PHYSICAL CONTACT WITH THE SHELL AND THE INNER RIDGES OF THE CORRUGATIONS ARE IN PHYSICAL CONTACT WITH THE ADJACENT ANODE, RAISING THE TEMPERATURE OF THE ASSEMBLAGE TO FORM A SILVER COPPER EUTECTIC WHICH FLOWS TO THE CONTACT AREAS, AND SUBSEQUENTLY COOLING THE ASSEMBLY.
Claim 2
Independent Claim
96 words
THE METHOD OF FORMING A COOLING FIN STRUCTURE WHICH COMPRISES FORMING A CORRUGATED SILVER PLATED COPPER SHEET, BENDING SAID SHEET INTO CYLINDRICAL FORM AND PLACINT IT INTO A CYLINDRICAL COPPER HSELL, URGING A COPPER ANODE INTO THE CYLINDRICAL OPENING DEFINED BY THE CORRUGATIONS SO THAT THE OUTER RIDGES OF THE CORRUGATIONS ARE IN PHYSICAL CONTACT WITH THE SHELL AND THE INNER RIDGES OF THE CORRUGATIONS ARE IN PHYSICAL CONTACT WITH THE ADJACENT ANODE, RAISING THE TEMPERATURE OF THE ASSEMBLAGE TO FORM A SILVER COPPER EUTECTIC WHICH FLOWS TO THE CONTACT AREAS, AND SUBSEQUENTLY COOLING THE ASSEMBLY.
References Cited (Backward Citations)
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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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |