Shoe midsole with ventilation devices
US5299368A · kind A · utility
Inventor
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B7/082
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A shoe midsole has a heel portion provided with an elastic shock-absorbing member which is embedded therein and which has an arcuate projection, an air chamber, a plurality of cavities located in the peripheries of the arcuate projection, a plurality of first air ducts through which the cavities communicate with the air chamber, and a plurality of through holes extending from the top surface of the arcuate projection to communicate with the air chamber. The elastic shock-absorbing member further has a plurality of second air ducts extending inwards along the peripheries thereof to communicate with the cavities. The heel portion is provided with a plurality of recesses corresponding in location and number to the second air ducts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.