Separable fastener of the flexible hooking type
Abstract
Abstract A THREE LEVEL HARMAPHRODITE SEPARABLE FASTENER ELEMENT HAVING A FLEXIBLE BASE SHEET, A LARGE NUMBER OF CLOISELY SPACED FLEXIBLE AND RESILIENT HOOKS SECURED TO AND EXTENDING VERTICALLY FROM THE BASE SHEET AND A NETWORK OF CROSS-CROSSED, 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 FASTENER ELEMENT FROM THREE CONTINUOUS PREFABRICATED WEBS OF HOOK-FORMING, MESHFORMING AND BASE SHEET-FORMING MATERIALS RESPECTIVELY. THE APPARATUS INCLUDES MULTIPLE SETS OF SHAPED METAL BANDS WHICH CONVERGE WITH THE HOOK-FORMING AND MESHFORMING WEBS, LONGITUDINALLY CORRUGATING THE WEBS AND HOLDING THEM IN PREDETERMINED SHAPE WHILE BEING HEAT SET AND SECURED TO THE BASE-SHEET FORMING WEB.
Inventors
- 👤 George H Erb
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |