Waterproof shoe construction and manufacture
US4819345A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B7/125
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A waterproof shoe construction and its method of manufacture is disclosed. The shoe has a liner which is impervious to liquid water but pervious to water vapor, a first innersole and a second innersole with a rib. There is a film impervious to liquid water but pervious to water vapor cemented between the first and second innersoles. A horizontal stitch connects the shoe side panels and the rib of the second innersole between the walls of a channel-shaped welt top, which welt bottom is cemented to the top of an outersole. The method of manufacture is a special blend of stitch down and cement construction techniques which allows for a comfortable, waterproof shoe at a lower manufacturing cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.