Non-woven fabric-like member
Abstract
Abstract THIS INVENTION IS DIRECTED TO A NON-WOVEN FABRRIC THAT IS CONTINUOUS AND FREE OF INDEPENDENT SEPARATE FIBERS; AND METHOD FOR PRODUCING SUCH A FABRIC THAT INCLUDES DRAWING A CELLULAR STRUCTURE AT ITS ORIENTATION TEMPERATURE OVER A SHAPED SURFACE TO STRETCH THE CELL WALLS UNTIL THEY RUPTURE; AND AN APPARATUS INCLUDING AN ANNULAR EXTRUSION DIE AND A MANDREL WITH A FRUSTO-CONICAL CONE PORTION AIMED AT, LARGER THAN AND COAXIAL WITH THE EXTRUDER DIE AND A CYLINDER PORTION CONNECTED TO, OF EQUAL EXTERNAL DIMENISON WITH, AND ALIGNED WITH THE CONES BASE, THE CYLINDER PORTION BEING FLATTENED AT ITS OUTER EDGE AND HAVING A UNIFORM UNINTERRUPTED DIMENSIONAL CHANGE FROM ITS CIRCULAR DIMENSION.
Inventors
- 👤 H Schirmer
Bibliographic Details
Claims Analysis
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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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |