US3084742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus
Assignee: Babcock and Wilcox Co
•
Filing: 1959-01-09
•
Granted: 1963-04-09
•
Expires: 1979-01-09
Abstract
No abstract record available.
Inventors
- 👤 David K Davies
- 👤 Earl E Schoessow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:24
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A HIGH TEMPERATURE HIGH PRESSURE HEAT EXCHANGER FOR HEAT TRANSFER BETWEEN A CORROSIVE HEATING FLUID AND AN ELECTROLYTIC VAPORIZABLE LIQUID HAVING PRESSURE PARTS INCLUDING A CARBON STEEL SHELL HAVING THICK-WALLED CARBON STEEL TUBE SHEETS CONNECTED TO OPPOSITE ENDS OF SAID SHELL AND DEFINING THEREBETWEEN A HEATING CHAMBER HAVING CARBON STEEL INTERNAL BOUNDARY SURFACES, MEANS DEFINING HEATING FLUID INLET AND OUTLET CHAMBERS AT THE OUTER SIDES OF SAID TUBE SHEETS, MEANS FOR SUPPLYING A HIGH TEMPERATURE CORROSIVE HEATING FLUID TO SAID INLET CHAMBER, A STAINLESS STEEL LAYER LINING THE WALLS OF SAID INLET AND OUTLET CHAMBERS AND THE OUTER SIDE OF SAID TUBE SHEETS, A GROUP OF STAINLESS STEEL TUBES HAVING THEIR OPPOSITE END PORTIONS EXPANDED INTO SAID TUBE SHEETS AND DIRECTLY WELDED TO THE STAINLESS STEEL LAYER ON SAID TUBE SHEETS TO FORM WITH SAID INLET AND OUTLET CHAMBERS A CHEMICALLY INERT FLOW PATH FOR SAID CORROSIVE FLUID, AND MEANS FOR SUPPLYING AN ELEC-
Claim 2
Dependent Claim
154 words
A HIGH TEMPERATURE HIGH PRESSURE HEAT EXCHANGER FOR HEAT TRANSFER BETWEEN A CORROSIVE HEATING FLUID AND AN ELECTROLYTIC VAPORIZABLE LIQUID HAVING PRESSURE PARTS INCLUDING A CARBON STEEL SHELL HAVING THICK-WALLED CARBON STEEL TUBE SHEETS CONNECTED TO OPPOSITE ENDS OF SAID SHELL AND DEFINING THEREBETWEEN A HEATING CHAMBER HAVING CARBON STEEL INTERNAL BOUNDARY SURFACES, MEANS DEFINING HEATING FLUID INLET AND OUTLET CHAMBERS AT THE OUTER SIDES OF SAID TUBE SHEETS, MEANS FOR SUPPLYING A HIGH TEMPERATURE CORROSIVE HEATING FLUID TO SAID INLET CHAMBER, A STAINLESS STEEL LAYER LINING THE WALLS OF SAID INLET AND OUTLET CHAMBERS AND THE OUTER SIDE OF SAID TUBE SHEETS, A GROUP OF STAINLESS STEEL TUBES HAVING THEIR OPPOSITE END PORTIONS EXPANDED INTO SAID TUBE SHEETS AND DIRECTLY WELDED TO THE STAINLESS STEEL LAYER ON SAID TUBE SHEETS TO FORM WITH SAID INLET AND OUTLET CHAMBERS A CHEMICALLY INERT FLOW PATH FOR SAID CORROSIVE FLUID, AND MEANS FOR SUPPLYING AN ELEC-
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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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |