US3120400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded tubular attachment to a pressure member and method of making same
Assignee: Babcock and Wilcox Co
•
Filing: 1960-07-27
•
Granted: 1964-02-04
•
Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Otis R Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:02
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/08; F16L41/082; F16L41/084; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/18; F28F9/182; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
FUSION WELDED TUBE ATTACHMENTS TO A PRESSURE MEMBER WHICH COMPRISES A PLURALITY OF TUBE SEATS FORMED THROUGH THE WALL OF THE PRESSURE MEMBER, FILLETS FORMED IN THE FACE OF THE PRESSURE MEMBER CONTIGUOUS WITH THE PERIPHERY OF THE TUBE SEATS, FRUSTO-CONICALLY SHAPED TUBE ENDS FITTED INTO SAID TUBE SEATS AND SO POSITIONED THAT THE CONICAL SURFACES ARE TANGENT TO THE ARC OF THE FILLETS WHEREBY THE SURFACES OF THE TUBE ENDS PROJECTING BEYOND SAID PRESSURE MEMBER AND THE OUTER FACE OF SAID PRESSURE MEMBER FROM OBTUSE ANGLED WELD GROOVES WITH THEIR APEXES DEFINING A SEGMENT OF AN ARC, AND FUSION WELDS IN SUCCESSIVE PASSES COMPLETELY UNITING SAID TUBES AND PRESSURE MEMBER, EACH OF SAID WELD PASSES BEING SINUOUS AND CONTINUOUS AROUND AT LEAST A SUBSTANTIAL PERIPHERAL PORTION OF A PLURALITY OF THE WELD GROOVES.
Claim 2
Dependent Claim
134 words
FUSION WELDED TUBE ATTACHMENTS TO A PRESSURE MEMBER WHICH COMPRISES A PLURALITY OF TUBE SEATS FORMED THROUGH THE WALL OF THE PRESSURE MEMBER, FILLETS FORMED IN THE FACE OF THE PRESSURE MEMBER CONTIGUOUS WITH THE PERIPHERY OF THE TUBE SEATS, FRUSTO-CONICALLY SHAPED TUBE ENDS FITTED INTO SAID TUBE SEATS AND SO POSITIONED THAT THE CONICAL SURFACES ARE TANGENT TO THE ARC OF THE FILLETS WHEREBY THE SURFACES OF THE TUBE ENDS PROJECTING BEYOND SAID PRESSURE MEMBER AND THE OUTER FACE OF SAID PRESSURE MEMBER FROM OBTUSE ANGLED WELD GROOVES WITH THEIR APEXES DEFINING A SEGMENT OF AN ARC, AND FUSION WELDS IN SUCCESSIVE PASSES COMPLETELY UNITING SAID TUBES AND PRESSURE MEMBER, EACH OF SAID WELD PASSES BEING SINUOUS AND CONTINUOUS AROUND AT LEAST A SUBSTANTIAL PERIPHERAL PORTION OF A PLURALITY OF THE WELD GROOVES.
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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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |