US3311091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube wall for fluid heating devices, and a method of producing such tube wall
Assignee: Burmeister and Wain AS
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Filing: 1966-01-10
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Granted: 1967-03-28
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Expires: 1986-01-10
Abstract
No abstract record available.
Inventors
- 👤 Kollerup Vagn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:02
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/14; F22B37/101; F22B37/102; F22B37/20; F22B37/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A TUBE WALL ADAPTED TO FORM A BOUNDARY WALL OF A FURNACE CHAMBER IN A TUBULOUS VAPOR GENERATOR, COMPRISING A PLURALITY OF PARALLEL TUBES ALL EXTENDING IN A COMMON PLANE AND EXPOSED TO HEAT FROM SAID FURNACE CHAMBER, SAID HEATED TUBES CONSISTING OF A FIRST GROUP OF TUBES AND A PLURALITY OF SECONDARY TUBE GROUPS EACH LOCATED BETWEEN TWO SUCCESSIVE TUBES OF SAID FIRST TUBE GROUP AND COMPRISING AT LEAST ONE TUBE, A PLURALITY OF PLATE MEMBERS EXTENDING IN THE LONGITUDINAL DIRECTION OF SAID PARALLEL TUBES, EACH OF SAID PLATE MEMBERS BEING DISPOSED BEHIND THE TUBES OF THE SECONDARY TUBE GROUP LOCATED BETWEEN TWO SUCCESSIVE TUBES OF SAID FIRST TUBE GROUP AS VIEWED FROM THE FURNACE CHAMBER, SAID PLATE MEMBERS HAVING A CONCAVE CURVILINEAR CROSS-SECTION AS VIEWED FROM THE FURNACE CHAMBER AND BEING WELDED TO TWO SUCCESSIVE TUBES OF SAID FIRST TUBE GROUP AT THE FREE LONGITUDINAL EDGES OF SAID PLATE MEMBER, AND CONNECTING MEANS EFFECTING A GAS-TIGHT CONNECTION BETWEEN EACH TUBE OF SAID SECONDARY GROUP AND THE ASSOCIATED PLATE MEMBER.
Claim 2
Dependent Claim
171 words
A TUBE WALL ADAPTED TO FORM A BOUNDARY WALL OF A FURNACE CHAMBER IN A TUBULOUS VAPOR GENERATOR, COMPRISING A PLURALITY OF PARALLEL TUBES ALL EXTENDING IN A COMMON PLANE AND EXPOSED TO HEAT FROM SAID FURNACE CHAMBER, SAID HEATED TUBES CONSISTING OF A FIRST GROUP OF TUBES AND A PLURALITY OF SECONDARY TUBE GROUPS EACH LOCATED BETWEEN TWO SUCCESSIVE TUBES OF SAID FIRST TUBE GROUP AND COMPRISING AT LEAST ONE TUBE, A PLURALITY OF PLATE MEMBERS EXTENDING IN THE LONGITUDINAL DIRECTION OF SAID PARALLEL TUBES, EACH OF SAID PLATE MEMBERS BEING DISPOSED BEHIND THE TUBES OF THE SECONDARY TUBE GROUP LOCATED BETWEEN TWO SUCCESSIVE TUBES OF SAID FIRST TUBE GROUP AS VIEWED FROM THE FURNACE CHAMBER, SAID PLATE MEMBERS HAVING A CONCAVE CURVILINEAR CROSS-SECTION AS VIEWED FROM THE FURNACE CHAMBER AND BEING WELDED TO TWO SUCCESSIVE TUBES OF SAID FIRST TUBE GROUP AT THE FREE LONGITUDINAL EDGES OF SAID PLATE MEMBER, AND CONNECTING MEANS EFFECTING A GAS-TIGHT CONNECTION BETWEEN EACH TUBE OF SAID SECONDARY GROUP AND THE ASSOCIATED PLATE MEMBER.
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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |