Separable fastener
Abstract
Abstract A hook member is formed from non-woven sheet material for use in a separable fastening device of the type having two complementary members each provided with an engaging surface having thereon a very large number of hooking elements of the hook and loop type; the members are joined by pressing the engaging surfaces together with a large number of hooks and loops becoming inter-engaged whereupon they become resistant to separation by forces generally parallel to the interface plane of the surfaces and are readily separable by peeling forces applied substantially normal to the plane. The hooks in the hook member are formed from portions of the non-woven sheet displaced out of the plane thereof into a generally upright position by the steps of displacing the portions of the sheet material, and deflecting and heat treating these portions to form the hooks.
Inventors
- 👤 George H Erb
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |