Centrifugal method for producing hollow axially symmetric bodies
Abstract
Abstract THE DISIRED GENERALLY AXIALLY SYMMETRIC SHAPE OF A HOLLOW BODY IS DEFINED BY INTERIOR WALLS OF A MOLD STRUCTURE MOUNTED FOR ROTATION ABOUT A VERTICAL SPIN AXIS. FIBER STRANDS ARE UNIFORMLY DISTRIBUTED ABOUT THE SPIN AXIS TO EXTEND THROUGH THE MOLD WITH THE OPPOSITE ENDS SLIDABLY ENGAGED TO MOVE ALONG THE MANDREL TOWARDS ONE ANOTHER. THE ENTIRE ASSEMBLY IS SPUN TO MOVE THE FIBER STRANDS WITHIN THE MOLD RADIALLY OUTWARD BY CENTRIFUGAL FORCE TOWARD THE INTERIOR MOLD WALLS, GRADUALLY SLIDING THE FIBER ENDS TOGETHER RO RELEASE ADDITIONAL FIBER LENGTHS INTO THE MOLD. WHEN THE FIBERS LIE AGAINST THE INTERIOR MOLD SURFACES, A LIQUID BINDER IS RELEASED TO FLOW RADIALLY OUTWARD BY CENTRIFUGAL FORCE COATING THE FIBERS COVERING THE INTERIOR MOLD SURFACES. THE BINDER HARDENS DURING CONTINUED SPINNING, BINDING THE FIBERS TOGETHER TO FORM A FIBER REINFORCED HOLLOW BODY OF THE DESIRED SHAPE.
Inventors
- 👤 Juan A Haener
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |