US3289645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapour generator nose arch supports
Assignee: Babcock International Ltd
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Filing: 1964-08-10
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Granted: 1966-12-06
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Richard H Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:05
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/62; F22B37/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A VAPOR GENERATOR COMPRISING: TUBULOUS WALL STRUCTURE DEFINING AN UPRIGHT FURNACE CHAMBER, SAID WALL STRUCTURE HAVING A SIDE THEREOF EXTENDING INWARDLY OF SAID FURNACE CHAMBER AT AN UPPER REGION THEREOF TO DEFINE A HOLLOW ARCH WHICH IS IMPERVIOUS TO GAS FLOW, A LATERAL GAS PASSAGEWAY ABOVE SAID ARCH AND COMMUNICATING WITH SAID FURNACE CHAMBER, A BEAM DISPOSED OUTSIDE SAID FURNACE CHAMBER AND WITHIN SAID HOLLOW ARCH, SAID BEAM SPANNING SAID SIDE OF SAID WALL STRUCTURE AND SUPPORTING A PORTION THEREOF BELOW THE ARCH, AND MEANS INCLUDING LENGTHS OF FLUID-CONDUCTING TUBES EXTENDING WITHIN SAID HOLLOW ARCH ALONG THE LENGTH OF SAID BEAM IN HEAT TRANSFER RELATIONSHIP THEREWITH FOR HEATING SAID BEAM DURING OPERATION OF THE VAPOR GENERATOR TO MINIMIZE DIFFERENTIAL THERMAL EXPANSION BETWEEN SAID WALL STRUCTURE AND SAID BEAM.
Claim 2
Dependent Claim
128 words
A VAPOR GENERATOR COMPRISING: TUBULOUS WALL STRUCTURE DEFINING AN UPRIGHT FURNACE CHAMBER, SAID WALL STRUCTURE HAVING A SIDE THEREOF EXTENDING INWARDLY OF SAID FURNACE CHAMBER AT AN UPPER REGION THEREOF TO DEFINE A HOLLOW ARCH WHICH IS IMPERVIOUS TO GAS FLOW, A LATERAL GAS PASSAGEWAY ABOVE SAID ARCH AND COMMUNICATING WITH SAID FURNACE CHAMBER, A BEAM DISPOSED OUTSIDE SAID FURNACE CHAMBER AND WITHIN SAID HOLLOW ARCH, SAID BEAM SPANNING SAID SIDE OF SAID WALL STRUCTURE AND SUPPORTING A PORTION THEREOF BELOW THE ARCH, AND MEANS INCLUDING LENGTHS OF FLUID-CONDUCTING TUBES EXTENDING WITHIN SAID HOLLOW ARCH ALONG THE LENGTH OF SAID BEAM IN HEAT TRANSFER RELATIONSHIP THEREWITH FOR HEATING SAID BEAM DURING OPERATION OF THE VAPOR GENERATOR TO MINIMIZE DIFFERENTIAL THERMAL EXPANSION BETWEEN SAID WALL STRUCTURE AND SAID BEAM.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |