Method of manufacturing footwear
Abstract
Abstract A METHOD OF MOLDING AN ARTICLE OF FOOTWEAR FROM A LIQUID PRODUCT, CHARACTERIZED IN THAT SAID LIQUID PRODUCT IS POLYMERIZABLE AND CROSS-LINKABLE AT AMBIENT TEMPERATURES. LIQUID PRODUCTS, SUCH AS POLYESTER, POLYURETHANES, OR ELASTOMERS, OF DIFFERENT HARDNESSES OR COLORS CAN BE USED SUCCESSIVELY TO FILL ONLY DESIRED PARTS OF THE MOLD TO CREATE DIFFERENT ZONES. THE DESIRED ZONES OF THE ARTICLE ARE MANUFACTURED BY USING INTERCHANGEABLE REMOVABLE CORES, AND PLUGS WITH POUR HOLED AND VENTS, THE CASTING OF THE ARTICLE INTERRUPTED TO PERMIT REMOVAL OF A CORE AND INSERTION OF A PLUG, BUT SAID INTERRUPTION BEING OF SUCH DURATION THAT THE PREVIOUSLY CAST MATERIAL IS NOT FULLY POLYMERIZED. THE MOLD AND LAST MAY BE CONSTITUTED OF THE SAME MATERIAL AS THE ARTICLE OF FOOTWEAR TO BE MANUFACTURED.
Inventors
- 👤 Jean-Gabriel Barre
- 👤 Jean-Marie Diez
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |