Apparatus for manufacturing of separable fastener elements
Abstract
Abstract A THREE LEVEL HERMAPHRODITE SEPARABLE FASTENER ELEMENT HAVING A FLEXIBLE BASE SHEET, A LARGE NUMBER OF CLOSELY SPACED FLEXIBLE AND RESILIENT HOOKS SECURED TO AND EXTENDING VERTICALLY FROM THE BASE SHEET AND A NETWORK OF CRISSCROSSED, RELATIVELY MOVABLE, FLEXIBLE, RESILIENT STRANDS SECURED TO THE BASE SHEET AND LYING IN A PLANE BETWEEN THE OPEN ENDS OF THE HOOKS AND THE BACKING SHEET. WHEN TWO SUCH FASTENER ELEMENTS ARE PRESSED TOGETHER TO FORM A CLOSURE THE HOOKS OF EACH ELEMENT BECOME ENMESHED WITH THE STRANDS OF THE OTHER. ALSO, APPARATUS FOR CONTINUOUS FORMING OF SUCH FASTENED ELEMENT FROM THREE CONTINUOUS PREFABRICATED WEBS OF HOOK-FORMING, MESH-FORMING AND BASE SHEET-FORMING MATERIALS RESPECTIVELY. THE APPARATUS INCLUDES MULTIPLE SETS OF SHAPED METAL BANDS WHICH CONVERGE WITH THE HOOK-FORMING AND MESH-FORMING WEBS, LONGITUDINALLY CORRUGATING THE WEBS AND HOLDING THEM IN PREDETERMINED SHAPE WHILE BEIN HEAT SET AND SECURED TO THE BASE-SHEET-FORMING WEB.
Inventors
- 👤 George H Erb
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |