US3291704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation apparatus having corrugated heat transfer surfaces
Assignee: General Electric Co
•
Filing: 1963-06-28
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Granted: 1966-12-13
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Diedrich Gunther Ernst
- 👤 Charles W Lotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:15
CPC Classifications
F; F28; F28D; F28D9/00; B; B01; B01D; B01D1/00; B01D1/22; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A HEAT TRANSFER WALL FOR WATER DISTILLATION APPARATUS HAVING ON ONE SIDE AN EVAPORATING SURFACE AND ON THE OTHER SIDE A CONDENSING SURFACE, THE IMPROVEMENT COMPRISING: A PLURALITY, OF ELONGATED PROTUBERANCES SEPARATED BY DEPRESSIONS ON SAID EVAPORATING SURFACE, SAID PROTUBERANCES BEING SUBSTANTIALLY PARALLEL AND HAVING (1) A PITCH P OF FROM 0.050 INCH TO 0.500 INCH, (2) A HEIGHT H OF FROM 0.025 INCH TO 0.250 INCH, AND (3) WHEREIN THE RATIO P/H IS APPROXIMATELY 2:1 TROUGHOUT THE RANGE OF DIMENSIONS OF SAID PITCH AND HEIGHT SAID WALL HAVING A LENGTH L WHICH COMPARES TO HEIGHT (H) IN A RATIO OF FROM 50:1 TO 5000:1.
Claim 2
Dependent Claim
106 words
IN A HEAT TRANSFER WALL FOR WATER DISTILLATION APPARATUS HAVING ON ONE SIDE AN EVAPORATING SURFACE AND ON THE OTHER SIDE A CONDENSING SURFACE, THE IMPROVEMENT COMPRISING: A PLURALITY, OF ELONGATED PROTUBERANCES SEPARATED BY DEPRESSIONS ON SAID EVAPORATING SURFACE, SAID PROTUBERANCES BEING SUBSTANTIALLY PARALLEL AND HAVING (1) A PITCH P OF FROM 0.050 INCH TO 0.500 INCH, (2) A HEIGHT H OF FROM 0.025 INCH TO 0.250 INCH, AND (3) WHEREIN THE RATIO P/H IS APPROXIMATELY 2:1 TROUGHOUT THE RANGE OF DIMENSIONS OF SAID PITCH AND HEIGHT SAID WALL HAVING A LENGTH L WHICH COMPARES TO HEIGHT (H) IN A RATIO OF FROM 50:1 TO 5000:1.
References Cited (Backward Citations)
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Cited
US3175962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |