Patent US3209440A successfully refreshed from Google Patents.
US3209440A
Expired / Lapsed
US
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Method of bonding heat exchanger having nested conduit sections
Assignee: Individual
•
Filing: 1961-05-01
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Granted: 1965-10-05
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Karmazin John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:51
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/26; F28F1/28; B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; B21D53/085; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49361; Y10T29/49366; Y10T29/49377; Y10T29/49378; Y10T29/4938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF MAKING A HEAT EXCHANGER HAVING A PLURALITY OF NESTED CONDUIT SECTIONS WHICH INCLUDES FORMING A LENGTH OF SOLDER TO PROVIDE RECESS MEANS THEREIN. APPLYING A FLUX TO SAID LENGTH OF SOLDER TO CAUSE SAID FLUX TO BE DEPOSITED WITHIN SAID RECESS MEANS, INSERTING SAID LENGTH OF SAID FLUX-BEARING SOLDER INTO SAID NESTED CONDUIT SECTIONS, APPLYING A MIXTURE OF POWDERED SOLDER, FLUX AND A LIQUID CARRIER TO THE EXTERIOR OF SAID CONDUIT SEC-
Claim 2
Independent Claim
75 words
THE METHOD OF MAKING A HEAT EXCHANGER HAVING A PLURALITY OF NESTED CONDUIT SECTIONS WHICH INCLUDES FORMING A LENGTH OF SOLDER TO PROVIDE RECESS MEANS THEREIN. APPLYING A FLUX TO SAID LENGTH OF SOLDER TO CAUSE SAID FLUX TO BE DEPOSITED WITHIN SAID RECESS MEANS, INSERTING SAID LENGTH OF SAID FLUX-BEARING SOLDER INTO SAID NESTED CONDUIT SECTIONS, APPLYING A MIXTURE OF POWDERED SOLDER, FLUX AND A LIQUID CARRIER TO THE EXTERIOR OF SAID CONDUIT SEC-
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |