Patent US1373434A successfully refreshed from Google Patents.
Patent US3078830A successfully refreshed from Google Patents.
US3078830A
Expired / Lapsed
US
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Tubulous boiler walls
Assignee: Babcock International Ltd
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Filing: 1959-03-17
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Granted: 1963-02-26
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Expires: 1979-03-17
Abstract
No abstract record available.
Inventors
- 👤 Richard H Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:39
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/208; F22B37/36; F22B37/365; F22B37/62; F22B37/64; F22B37/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A FURNACE CHAMBER DEFINED BY UPRIGHT WALLS, ONE OF SAID WALLS COMPRISING A PLURALITY OF SEPARATED, VERTICALLY STACKED WALL SECTIONS EACH INCLUDING BUCKSTAY MEANS FOR BOTTOM SUPPORTING EACH OF SAID VERTICALLY STACKED WALL SECTIONS TO CARRY THE LOAD THEREOF, MEANS FOR TOP SUPPORTING EACH OF SAID BUCKSTAY MEANS AND LOAD CARRIED THEREBY FROM A SUPERJACENT WALL SECTION, AND A GROUP OF HORIZONTALLY DISPOSED TUBES SCREENING EACH OF SAID WALL SECTIONS, EACH GROUP OF TUBES BEING SUPPORTED FROM THE WALL SECTION STACKED ABOVE THE WALL SECTION SCREENED THEREBY.
Claim 2
Dependent Claim
88 words
IN A FURNACE CHAMBER DEFINED BY UPRIGHT WALLS, ONE OF SAID WALLS COMPRISING A PLURALITY OF SEPARATED, VERTICALLY STACKED WALL SECTIONS EACH INCLUDING BUCKSTAY MEANS FOR BOTTOM SUPPORTING EACH OF SAID VERTICALLY STACKED WALL SECTIONS TO CARRY THE LOAD THEREOF, MEANS FOR TOP SUPPORTING EACH OF SAID BUCKSTAY MEANS AND LOAD CARRIED THEREBY FROM A SUPERJACENT WALL SECTION, AND A GROUP OF HORIZONTALLY DISPOSED TUBES SCREENING EACH OF SAID WALL SECTIONS, EACH GROUP OF TUBES BEING SUPPORTED FROM THE WALL SECTION STACKED ABOVE THE WALL SECTION SCREENED THEREBY.
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |