Patent US3340588A successfully refreshed from Google Patents.
US3340588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making heat exchangers
Assignee: Individual
•
Filing: 1962-12-11
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Granted: 1967-09-12
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Expires: 1982-12-11
Abstract
No abstract record available.
Inventors
- 👤 Heinz E Mueller
- 👤 Dietrich E Singelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:16
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/027; F; F28; F28D; F28D7/00; F28D7/04; F28F; F28F3/00; F28F3/02; F28F3/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE METHOD OF FABRICATING A SPIRAL HEAT EXCHANGER HAVING A MEANS PROVIDED FOR CONDUCTING A FLUID COOLANT THERETHROUGH COMPRISING THE STEPS OF POSITIONING A CORRUGATED RADIATING MEMBER IN CONTACT WITH THE OUTER SURFACE OF A LATERALLY ELONGATED FLUID CONDUCTING TUBULAR MEMBER, BRAZING SAID POSITIONED MEMBERS BY PASSAGE THROUGH A HEATED FURNACE USING A CONTINUOUS BRAZING PROCESS, INSERTING FILLER BLOCKS INTO THE RECESSES IN THE CORRUGATIONS OF SAID RADIATING MEMBER, ATTACHING A SEPERATING STRIP TO THE OUTERMOST EXTREMITIES OF THE CORRUGATIONS ON SAID RADIATING MEMBER, WINDING SAID BRAZED HEAT EXCHANGER AND ATTACHED SEPARATING STRIP INTO SPIRAL FORM, SAID SEPARATING STRIP SERVING TO PREVENT MESHING ACTION OF ADJACENTLY DISPOSED SECTIONS OF SAID CORRUGATING MEMBER, AND REMOVING SAID FILLER BLOCKS FROM THE CORRUGATIONS IN SAID RADIATING MEMBER THEREBY ALLOWING SUBSTANTIALLY FREE PASSAGE OF HEAT CARRYING GASEOUS FLUID THROUGH THE AREA BETWEEN ADJACENT WINDINGS OF THE TUBULAR MEMBER.
Claim 2
Independent Claim
144 words
THE METHOD OF FABRICATING A SPIRAL HEAT EXCHANGER HAVING A MEANS PROVIDED FOR CONDUCTING A FLUID COOLANT THERETHROUGH COMPRISING THE STEPS OF POSITIONING A CORRUGATED RADIATING MEMBER IN CONTACT WITH THE OUTER SURFACE OF A LATERALLY ELONGATED FLUID CONDUCTING TUBULAR MEMBER, BRAZING SAID POSITIONED MEMBERS BY PASSAGE THROUGH A HEATED FURNACE USING A CONTINUOUS BRAZING PROCESS, INSERTING FILLER BLOCKS INTO THE RECESSES IN THE CORRUGATIONS OF SAID RADIATING MEMBER, ATTACHING A SEPERATING STRIP TO THE OUTERMOST EXTREMITIES OF THE CORRUGATIONS ON SAID RADIATING MEMBER, WINDING SAID BRAZED HEAT EXCHANGER AND ATTACHED SEPARATING STRIP INTO SPIRAL FORM, SAID SEPARATING STRIP SERVING TO PREVENT MESHING ACTION OF ADJACENTLY DISPOSED SECTIONS OF SAID CORRUGATING MEMBER, AND REMOVING SAID FILLER BLOCKS FROM THE CORRUGATIONS IN SAID RADIATING MEMBER THEREBY ALLOWING SUBSTANTIALLY FREE PASSAGE OF HEAT CARRYING GASEOUS FLUID THROUGH THE AREA BETWEEN ADJACENT WINDINGS OF THE TUBULAR MEMBER.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |