US3233074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming tubes with longitudinally extending fins
Assignee: Babcock International Ltd
•
Filing: 1962-09-19
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Granted: 1966-02-01
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Expires: 1982-09-19
Abstract
No abstract record available.
Inventors
- 👤 Smith Allan Keppie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:43
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/225; B21C37/26; B23K9/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A MACHINE ADAPTED TO FORM TUBES WITH LONGITUDINALLY EXTENDING FINS HAVING POSITIONING MEANS FOR POSITIONING EDGES OF METAL STRIPS PARALLEL TO THE AXIS OF A TUBE AND AT DIAMETRICALLY OPPOSITE LOCATIONS IN READINESS FOR A WELDING OPERATION; ELECTRIC FUSION WELDING MEANS ADAPTED SIMULTANEOUSLY TO EFFECT AT OPPOSITE SIDES OF A PLANE CONTAINING THE AXIS OF THE TUBE AND PASSING THROUGH THE RADIALLY INNER EDGES OF THE STRIPS FUSION WELDS BETWEEN THE STRIPS AND THE TUBE, SAID LAST NAMED MEANS INCLUDING TWO WELDING HEADS, ONE WELDING HEAD AT ONE SIDE OF THE SAID PLANE AND ARRANGED TO DIRECT AN ELECTRODE TOWARDS THE JUNCTION OF THE TUBE AND ONE STRIP AND THE OTHER WELDING HEAD AT THE OTHER SIDE OF THE PLANE AND ARRANGED TO DIRECT AN ELECTRODE TOWARDS THE JUNCTION OF THE TUBE AND
Claim 2
Dependent Claim
133 words
A MACHINE ADAPTED TO FORM TUBES WITH LONGITUDINALLY EXTENDING FINS HAVING POSITIONING MEANS FOR POSITIONING EDGES OF METAL STRIPS PARALLEL TO THE AXIS OF A TUBE AND AT DIAMETRICALLY OPPOSITE LOCATIONS IN READINESS FOR A WELDING OPERATION; ELECTRIC FUSION WELDING MEANS ADAPTED SIMULTANEOUSLY TO EFFECT AT OPPOSITE SIDES OF A PLANE CONTAINING THE AXIS OF THE TUBE AND PASSING THROUGH THE RADIALLY INNER EDGES OF THE STRIPS FUSION WELDS BETWEEN THE STRIPS AND THE TUBE, SAID LAST NAMED MEANS INCLUDING TWO WELDING HEADS, ONE WELDING HEAD AT ONE SIDE OF THE SAID PLANE AND ARRANGED TO DIRECT AN ELECTRODE TOWARDS THE JUNCTION OF THE TUBE AND ONE STRIP AND THE OTHER WELDING HEAD AT THE OTHER SIDE OF THE PLANE AND ARRANGED TO DIRECT AN ELECTRODE TOWARDS THE JUNCTION OF THE TUBE AND
References Cited (Backward Citations)
US1797795A
Cited
US1831343A
Cited
US2132975A
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US2632081A
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US2667559A
Cited
US2680182A
Cited
US2827551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |