Shoe having a sole structure and an air pump device for blowing air into a shoe interior space
US10477914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2017 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jan 21, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/206
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A shoe has an air pump device comprising a bellows formed in a cavity in a heel area of the sole structure. The cavity has an average height of at least 4 mm and extends horizontally over most of the surface of the heel area, so that a support strip of the compressible material of the at least one intermediate layer remains between the cavity and the outside edges of the sole structure on the sides and at the heel, wherein the support strip extends vertically over the full height of the cavity and the average width of the support strip is not more than 20% of the maximum width of the heel area measured transversely to the walking direction. The compressible material has an average hardness between 30 and 55 Shore-A at least in the area of the support strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.