Method of producing pads or mats of mineral fibers
Abstract
Abstract THE PRODUCTION OF A MAT OF GLASS FIBERS OF IMPROVED STRUCTURAL INTEGRITY, COHESIVENESS, INCREASED DENSITY, RESILIENCE AND TRACTIVE RESISTANCE IN LONGITUDINAL AND TRANSVERSE DIRECTIONS BY COMBINING WITH THE MAT A THIN LAYER OF CONNECTING FIBERS HAVING STRETCH AND PLIABILITY CHARACTERISTICS GREATER THAN THOSE OF THE GLASS FIBERS, AND "NEEDLING" THE COMBINED MAT WITH NEEDLES PROVIDED WITH BARBS WHICH ENTRAIN THE CONNECTING FIBERS INTO THE MAT IN A TRANSVERSE DIRECTION RELATIVE TO THE MAT SURFACES, WHICH BIND THE GLASS FIBER INTO A WELL INTEGRATED MAT USEFUL FOR THERMAL AND ACOUSTIC INSULATION, STRUCTURAL MEMBERS, LAMINATES FOR FABRIC AND OTHER SHEET MATERIAL, PACKING PLASTIC REINFORCEMENTS, FILTERS, AND OTHER INDUSTRIAL APPLLICATIONS.
Inventors
- 👤 Andre Gruget
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |