Preform roller
Abstract
Abstract A METHOD AND APPARATUS FOR MANUFACTURING AN IMPROVED FIBER PREFORM WHICH MAY BE USED IN THE SUBSEQUENT BAG MOLDING OF FIBER REINFORCED PLASTIC ARTICLES SUCH AS TANKS OR THE LIKE. THE METHOD COMPRISES THE STEPS OF RANDOMLY DEPOSITING SHORT REINFORCING FIBER ON A FORM, BINDING THE FIBERS TOGETHER WITH A SETTABLE RESIN BINDER, AND ROLLING THE RESIN COATED FIBERS ON THE FORM INTO A DIMENSIONALLY NIFORM POROUS MAT. THE APPARATUS INCLUDES A ROTATABLE LAY-UP FORM, MEANS FOR RANDOMLY DEPOSITING THE REINFORCING FIBERS IN A POROUS LAYER ON THE FORM, MEANS TO COAT THE FIBERS WITH A SETTABLE RESIN BINDER, AND MEANS TO PROGRESSIVELY PRESS THE FIBERS ALONG THE LENGTH OF THE FORM INTO A UNIFORM WALL THICKNESS.
Inventors
- 👤 Arthur J Wiltshire
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |