Molding footwear lasts
US4044417A · kind A · utility
5Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1975 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Dec 31, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/40
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Footwear lasts are molded by preparing an oversized model of the last to be molded; isolating, applying mold release to, and covering with liquid ISP at least first and second surface portions of the model; allowing the ISP cure to form at least first and second mold portions; and using the mold portions to mold plastic lasts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.