Ball and socket 3D cushioning system
US7665232B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2007 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Sep 7, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B21/26
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a sliding element for a shoe sole. The sliding element includes an upper sliding surface and a lower sliding surface, wherein the lower sliding surface is arranged below the upper sliding surface so as to be slideable in at least two directions. The upper sliding surface can form a lower side of an upper heel cup and the lower sliding surface can form an upper side of a lower heel cup, wherein the upper heel cup and the lower heel cup have corresponding substantially spherical shapes. Complex multi-dimensional sliding and cushioning movements between the upper sliding surface and the lower sliding surface are made possible by the corresponding three-dimensional shapes of the two substantially spherical surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.