US3564889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyramid roll bending machine for forming sheet metal
Assignee: WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN
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Filing: 1968-08-30
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Granted: 1971-02-23
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Expires: 1988-08-30
Abstract
Abstract THE COMBINATION COMPRISING A BOTTOM YOKE THAT IS MOVABLY MOUNTED FOR CROSSWISE MOVEMENT WITH RESPECT TO THE LONGITUDINAL AXIS OF UPPER BENDING ROLLS IN A PYRAMID ROLL BENDING MACHINE IS PROVIDED. TWO BOTTOM ROLLS AND SUPPORT MEANS FOR THE BOTTOM ROLLS ARE MOUNTED ON THE MOVABLE BOTTOM YOKE. THE BOTTOM YOKE INCLUDES BEARING MEANS SLIDABLY RESTING ON A COOPERATING BEARING LOCATED IN A FRAME MEANS AT EACH END OF THE BOTTOM YOKE. A SCREW SHAFT IS LOCATED IN THE FRAME MEANS FOR MOVING THE BOTTOM YOKE THEREBY CARRYING ANY STRUCTURE MOUNTED THEREON TO ANY DESIRED POSITION. IN MORE SPECIFIC EMBODIMENTS, DRIVE MEANS IS MOUNTED ON THE MOVBLE BOTTOM YOKE FOR DRIVING THE BOTTOM ROLLS.
Inventors
- 👤 Rudolf Herburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:16
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |