US3360177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube welding apparatus
Assignee: Sandvik AB
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Filing: 1965-04-13
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Granted: 1967-12-26
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Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Enkvist Sven Holger Gothe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:16
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A JOINTING DEVICE FOR PROGRESSIVELY WELDING THE LONGITUDINALLY EXTENDING SLIT IN A TUBE FOLLOWING FORMATION OF THE TUBE FROM FLAT STRIP MATERIAL TO ESTABLISH A LONGITUDINAL SEAM AS THE TUBE MOVES LONGITUDINALLY OF ITSELF FROM THE TUBE FORMING MEANS, THE COMBINATION COMPRISING PRESSURE ROLLS AND WELDING MEANS MOUNTED ON A FRAME WHICH IN TURN IS ROTATABLY MOUNTED ABOUT THE AXIS OF SAID TUBE, THE TORQUE FOR ROTATING SAID FRAME BEING LESS THAN THAT REQUIRED TO ROTATE THE TUBE, A FEELER MEANS LOCATED IN ADVANCE OF SAID FRAME AND WHICH IS ARRANGED TO FOLLOW ANY LATERAL DEVIATION OF SAID TUBE SLIT AS THE TUBE COMES FROM THE TUBE FORMER, AND MEANS INTERCONNECTING SAID FEELER MEANS AND FRAME TO EFFECT A CORRESPONDING ROTARY ADJUSTMENT OF SAID FRAME AND WELDING MEANS THEREON THEREBY TO MAINTAIN SAID WELDING MEANS IN ALIGNMENT WITH THE TUBE SLIT.
Claim 2
Dependent Claim
142 words
IN A JOINTING DEVICE FOR PROGRESSIVELY WELDING THE LONGITUDINALLY EXTENDING SLIT IN A TUBE FOLLOWING FORMATION OF THE TUBE FROM FLAT STRIP MATERIAL TO ESTABLISH A LONGITUDINAL SEAM AS THE TUBE MOVES LONGITUDINALLY OF ITSELF FROM THE TUBE FORMING MEANS, THE COMBINATION COMPRISING PRESSURE ROLLS AND WELDING MEANS MOUNTED ON A FRAME WHICH IN TURN IS ROTATABLY MOUNTED ABOUT THE AXIS OF SAID TUBE, THE TORQUE FOR ROTATING SAID FRAME BEING LESS THAN THAT REQUIRED TO ROTATE THE TUBE, A FEELER MEANS LOCATED IN ADVANCE OF SAID FRAME AND WHICH IS ARRANGED TO FOLLOW ANY LATERAL DEVIATION OF SAID TUBE SLIT AS THE TUBE COMES FROM THE TUBE FORMER, AND MEANS INTERCONNECTING SAID FEELER MEANS AND FRAME TO EFFECT A CORRESPONDING ROTARY ADJUSTMENT OF SAID FRAME AND WELDING MEANS THEREON THEREBY TO MAINTAIN SAID WELDING MEANS IN ALIGNMENT WITH THE TUBE SLIT.
References Cited (Backward Citations)
US3075484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |