Patent US3122115A successfully refreshed from Google Patents.
US3122115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for making tubes or pipes
Assignee: Individual
•
Filing: 1961-02-08
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Granted: 1964-02-25
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 Siegwart Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:51
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; B21C37/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
A METHOD OF MAKING A TUBE FROM AN ELONGATED, TWOFACED SHEET HAVING TWO LONGITUDINAL EDGE PORTIONS AND A CENTRAL PORTION INTERMEDIATE SAID EDGE PORTIONS, COMPRISING THE STEPS OF (A) ANGULARLY FOLDING ONE OF SAID EDGE PORTIONS RELATIVE TO SAID CENTRAL PORTION UNTIL SAID ONE EDGE PORTION AND ONE FACE OF SAID CENTRAL PORTION DEFINE AN ACUTE ANGLE; AND SAID ONE EDGE PORTION PROJECTS FROM SAID ONE FACE IN AN OUTWARD DIRECTION; (B) FOLDING ONE PART OF THE OTHER EDGE PORTION ON THE REMAINING PART OF SAID OTHER EDGE PORTION IN SUCH A MANNER THAT THE TWO PARTS JOINTLY FORM AN OPEN LONGITUDINAL CHANNEL; (C) ANGULARLY FOLDING SAID OTHER EDGE PORTION RELATIVE TO SAID CENTRAL PORTION UNTIL SAID OTHER EDGE PORTION DEFINES WITH SAID ONE FACE OF SAID CENTRAL PORTION AN OBTUSE ANGLE AND PROJECTS FROM SAID ONE FACE IN SAID OUTWARD DIRECTION; (D) THEREAFTER HELICALLY WINDING SAID STRIP HAVING SAID FOLDED EDGE PORTIONS ABOUT AN AXIS INTO A PLURALITY OF SUCCESSIVE TURNS SO ABOUT AN AXIS INTO A PLURALITY SAID TURNS JOINTLY FORM A TUBE AND SAID EDGE PORTIONS PROJECT RADIALLY OUTWARD FROM THE CENTRAL PORTION OF SAID STRIP; (E) ENGAGING SAID ONE FOLDED EDGE PORTION OF ONE TURN IN THE CHANNEL FORMED BY THE OTHER FOLDED EDGE PORTION OF AN ADJACENT TURN TO FORM A SEAM; AND (F) FOLDING SAID SEAM ON SAID TUBE.
Claim 2
Independent Claim
225 words
A METHOD OF MAKING A TUBE FROM AN ELONGATED, TWOFACED SHEET HAVING TWO LONGITUDINAL EDGE PORTIONS AND A CENTRAL PORTION INTERMEDIATE SAID EDGE PORTIONS, COMPRISING THE STEPS OF (A) ANGULARLY FOLDING ONE OF SAID EDGE PORTIONS RELATIVE TO SAID CENTRAL PORTION UNTIL SAID ONE EDGE PORTION AND ONE FACE OF SAID CENTRAL PORTION DEFINE AN ACUTE ANGLE; AND SAID ONE EDGE PORTION PROJECTS FROM SAID ONE FACE IN AN OUTWARD DIRECTION; (B) FOLDING ONE PART OF THE OTHER EDGE PORTION ON THE REMAINING PART OF SAID OTHER EDGE PORTION IN SUCH A MANNER THAT THE TWO PARTS JOINTLY FORM AN OPEN LONGITUDINAL CHANNEL; (C) ANGULARLY FOLDING SAID OTHER EDGE PORTION RELATIVE TO SAID CENTRAL PORTION UNTIL SAID OTHER EDGE PORTION DEFINES WITH SAID ONE FACE OF SAID CENTRAL PORTION AN OBTUSE ANGLE AND PROJECTS FROM SAID ONE FACE IN SAID OUTWARD DIRECTION; (D) THEREAFTER HELICALLY WINDING SAID STRIP HAVING SAID FOLDED EDGE PORTIONS ABOUT AN AXIS INTO A PLURALITY OF SUCCESSIVE TURNS SO ABOUT AN AXIS INTO A PLURALITY SAID TURNS JOINTLY FORM A TUBE AND SAID EDGE PORTIONS PROJECT RADIALLY OUTWARD FROM THE CENTRAL PORTION OF SAID STRIP; (E) ENGAGING SAID ONE FOLDED EDGE PORTION OF ONE TURN IN THE CHANNEL FORMED BY THE OTHER FOLDED EDGE PORTION OF AN ADJACENT TURN TO FORM A SEAM; AND (F) FOLDING SAID SEAM ON SAID TUBE.
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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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |