Shoe insert
US6138383A · kind A · utility
Inventors
Key dates
| Filing date | Aug 9, 1999 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Aug 9, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B17/18
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention in a shoe insert to be fitted into and maintained in a conventional walking or running shoe to provide support and cushioning to the foot of such shoe wearer. The shoe insert is to fit into a shoe to grip to the shoe insole and is manufactured from a vio-elastic polyperic material having a recovery or compression set less than two (2) percent providing a rapid rate of force dissipation to a shoe wearer that is equal to their rate of gait, with further cushioning provided by a selection and formation of cavities in the insert surface that is in engagement with a shoe insole. The cavities preferably consist of spaced dome and cylindrical shaped cavities, with the dome shaped cavities spaced apart and located over points of greatest anticipated stress concentrations as the shoe wearer experiences during walking or running, each to partially collapse, expanding outwardly within the polymeric material to where a lower edge of each also expands outwardly, providing an absorbtion of force with a rapid rebound when the force is removed, providing a dampening spring action, with the spaced cylindrical cavities also included in the shoe insert that are each formed to have appro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.