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Patent US3207834A successfully refreshed from Google Patents.
US3207834A
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Method of bending unfilled pipes and tubes
Assignee: Walterscheid GmbH
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Filing: 1962-10-16
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Granted: 1965-09-21
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Geisthoff Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:27
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B21; B21D; B21D11/00; B21D11/06; B21D7/00; B21D7/02; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF BENDING A RESILIENTLY DEFORMABLE PIPE HAVING A LONGITUDINAL AXIS, COMPRISING THE STEPS OF TEMPORARILY AND ELASTICALLY DEFORMING SAID PIPE RADIALLY OUTWARDLY AT DIAMETRICALLY OPPOSITE LOCATIONS SUBSTANTIALLY IN AN AXIAL PLANE OF SAID PIPE, WHILE SIMULTANEOUSLY BENDING SAID PIPE PLANE ABOUT AN ARCUATE SURFACE BEYOND THE ELASTIC LIMIT TO PERMENENTLY DEFORM SAID PIPE.
Claim 2
Independent Claim
55 words
A METHOD OF BENDING A RESILIENTLY DEFORMABLE PIPE HAVING A LONGITUDINAL AXIS, COMPRISING THE STEPS OF TEMPORARILY AND ELASTICALLY DEFORMING SAID PIPE RADIALLY OUTWARDLY AT DIAMETRICALLY OPPOSITE LOCATIONS SUBSTANTIALLY IN AN AXIAL PLANE OF SAID PIPE, WHILE SIMULTANEOUSLY BENDING SAID PIPE PLANE ABOUT AN ARCUATE SURFACE BEYOND THE ELASTIC LIMIT TO PERMENENTLY DEFORM SAID PIPE.
References Cited (Backward Citations)
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |