US3267570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring and controlling the width of the welding gap in the production of helical seam pipe
Assignee: DRIAM SA
•
Filing: 1963-01-16
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Granted: 1966-08-23
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Winkler Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:56
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/032; B23K9/0325; B23K11/00; B23K11/08; B23K11/082; B23K11/084; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/49771; Y10T29/49773
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD FOR CONTINUOUS MEASUREMENT AND CONTROL OF THE CHANGEABLE WIDTH OF THE WELDING GAP DURING THE MANUFACTURE OF PIPES WITH WELDED HELICOIDAL SEAMS, COMPRISING THE STEPS OF SUBJECTING THAT PORTION OF SAID WELDING GAP CLOSELY ADJACENT TO THE WELDING SPOT TO THE PENETRATION THERETHROUGH OF THE RAYS OF A RADIOACTIVE ISOTOPE, MEASURING THE FLUCTUATIONS IN QUANTITY OF SAID RAYS IN RESPONSE TO CHANGES IN SAID WIDTH, AND UTILIZING SAID FLUCTUATIONS FOR THE CONTROL OF SAID WIDTH.
Claim 2
Independent Claim
77 words
A METHOD FOR CONTINUOUS MEASUREMENT AND CONTROL OF THE CHANGEABLE WIDTH OF THE WELDING GAP DURING THE MANUFACTURE OF PIPES WITH WELDED HELICOIDAL SEAMS, COMPRISING THE STEPS OF SUBJECTING THAT PORTION OF SAID WELDING GAP CLOSELY ADJACENT TO THE WELDING SPOT TO THE PENETRATION THERETHROUGH OF THE RAYS OF A RADIOACTIVE ISOTOPE, MEASURING THE FLUCTUATIONS IN QUANTITY OF SAID RAYS IN RESPONSE TO CHANGES IN SAID WIDTH, AND UTILIZING SAID FLUCTUATIONS FOR THE CONTROL OF SAID WIDTH.
References Cited (Backward Citations)
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Cited
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US2859349A
Cited
US2965758A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |