Self-ventilating footwear
US6205680A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B7/082
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Self-ventilating footwear using two simple check valves attached to a midsole insert that comprises a compression member and a displacement compartment, wherein the midsole insert is inserted into the lower part of a shoe. The check valves are located on the forefoot and heel of the shoe and operate by compression of the user's foot which forces air out of the heel valve and, in turn, creates a vacuum in the displacement compartment which draws air in through the forefoot valve. By walking or running, the user repeatedly compresses the displacement compartment and drives the airflow through the displacement compartment. The simple nature of the valve and compartment arrangement improves the ease of manufacture and reduces the cost of the footwear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.