Method and apparatus for manufacturing waterproof footwear with attached compressible lining
US8883058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2014 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jun 19, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/084
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for making a lined waterproof footwear product, and footwear product formed therefrom, are provided. A last, having an exterior surface configured to correspond to the size and shape of the interior surface of the footwear product, is covered with a microcellular lining material. An injection mold comprises shells having a pre-determined configuration to mold an upper portion that attaches to the lining during the molding process. In the finished footwear product, the molded upper portion has a molded foot portion that extends around the wearer's foot and an upwardly-extending molded portion that covers a part of the lining while leaving another part of the lining uncovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.