US3229762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded heat exchanger
Assignee: Schmidtsche Heissdampf GmbH
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Filing: 1964-04-28
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Granted: 1966-01-18
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Expires: 1984-04-28
Abstract
No abstract record available.
Inventors
- 👤 Vollhardt Frohmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:30
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/18; F28F9/182; F22; F22B; F22B1/00; F22B1/02; F22B1/021; F22B1/08; F28D; F28D7/00; F28D7/005; F28F1/00; F28F1/006; F28F2210/00; F28F2210/02; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/432; Y10S165/433; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
HEAT EXCHANGING OR EVAPORATING ELEMENT OF WELDED CONSTRUCTION FOR WASTE-HEAT BOILERS OR SIMILAR HEAT EXCHANGERS, ESPECIALLY FOR HEATING WITH GASEOUS HEATING MEDIA OF VERY HIGH PRESSURE, COMPRISING A JACKET, HEAT EXCHANGING TUBES LOCATED IN SAID JACKET CONVEYING THE HEATING MEDIUM, DISTRIBUTING HEADS LOCATED AT BOTH ENDS OF SAID JACKET SERVING AS CONDUCTORS OF THE HEATING MEDIUM TO AND FROM SAID HEAT EXCHANGING TUBES, SAID HEADS BEING OF SOLID INTEGRAL CONSTRUCTION HAVING AT THEIR SURFACES FACING THE ENDS OF SAID JACKET, EXTENSIONS MACHINED FROM THE SOLID CONSTRUCTION OF SAID HEADS FOR RECEIVING THE ENDS OF SAID HEATING TUBES, AN INTEGRAL CYLINDRICAL WEB UPON SAID HEADS FOR CONNECTION WITH SAID JACKET, ADDITIONAL EXTENSIONS ON A SIDE WALL OF SAID HEADS INTEGRAL
Claim 2
Dependent Claim
119 words
HEAT EXCHANGING OR EVAPORATING ELEMENT OF WELDED CONSTRUCTION FOR WASTE-HEAT BOILERS OR SIMILAR HEAT EXCHANGERS, ESPECIALLY FOR HEATING WITH GASEOUS HEATING MEDIA OF VERY HIGH PRESSURE, COMPRISING A JACKET, HEAT EXCHANGING TUBES LOCATED IN SAID JACKET CONVEYING THE HEATING MEDIUM, DISTRIBUTING HEADS LOCATED AT BOTH ENDS OF SAID JACKET SERVING AS CONDUCTORS OF THE HEATING MEDIUM TO AND FROM SAID HEAT EXCHANGING TUBES, SAID HEADS BEING OF SOLID INTEGRAL CONSTRUCTION HAVING AT THEIR SURFACES FACING THE ENDS OF SAID JACKET, EXTENSIONS MACHINED FROM THE SOLID CONSTRUCTION OF SAID HEADS FOR RECEIVING THE ENDS OF SAID HEATING TUBES, AN INTEGRAL CYLINDRICAL WEB UPON SAID HEADS FOR CONNECTION WITH SAID JACKET, ADDITIONAL EXTENSIONS ON A SIDE WALL OF SAID HEADS INTEGRAL
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |