Patent US3201963A successfully refreshed from Google Patents.
US3201963A
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Apparatus for rolling tubing into a convoluted contour
Assignee: Individual
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Filing: 1963-02-15
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Granted: 1965-08-24
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Expires: 1983-02-15
Abstract
No abstract record available.
Inventors
- 👤 William H Leinbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:26
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A MANDREL FOR SUPPORTING TUBING FOR ROLLING THE TUBING INTO A CONVOLUTED CONTOUR COMPRISING A FIRST CONVOLUTED MANDREL PORTION HAVING A PITCH DIAMETER EQUAL TO THE INTERNAL PITCH DIAMETER OF THE FINISHED CONVOLUTIONS ON THE TUBING AND HAVING A SECOND CONVOLUTED PORTION EXTENDING FROM SAID FIRST MENTIONED CONVOLUTED PORTION AND HAVING A PITCH DIAMETER EQUAL TO THE EXTERNAL PITCH DIAMETER OF THE FINISHED FORM AND OF A LARGER PITCH DIAAMETER THAN THE PITCH DIAMETER OF THE FIRST CONVOLUTED MANDREL PORTION.
Claim 2
Dependent Claim
80 words
A MANDREL FOR SUPPORTING TUBING FOR ROLLING THE TUBING INTO A CONVOLUTED CONTOUR COMPRISING A FIRST CONVOLUTED MANDREL PORTION HAVING A PITCH DIAMETER EQUAL TO THE INTERNAL PITCH DIAMETER OF THE FINISHED CONVOLUTIONS ON THE TUBING AND HAVING A SECOND CONVOLUTED PORTION EXTENDING FROM SAID FIRST MENTIONED CONVOLUTED PORTION AND HAVING A PITCH DIAMETER EQUAL TO THE EXTERNAL PITCH DIAMETER OF THE FINISHED FORM AND OF A LARGER PITCH DIAAMETER THAN THE PITCH DIAMETER OF THE FIRST CONVOLUTED MANDREL PORTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |