Insole cushioning device with repelling magnetic field
US7694440B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2006 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Jan 19, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B1/0054
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A system is disclosed for an insole for use in an article of footwear. The insole includes a bottom cushion layer; a lower intermediate layer; a middle flexible layer; an upper intermediate layer; and an upper cushion layer. The layers are coupled together by either lamination or gluing. The lower intermediate layer and the upper intermediate layer are respectively embedded with a first array of magnet elements and a second array of magnet elements, such that the first array of magnet elements and the second array of magnet elements generate a repelling magnetic field that results in a repelling mechanical force that pulls the upper intermediate layer away from the lower intermediate layer. This invention is not affected by material fatigue due to prolonged pressure or temperature stress that is common in insoles for use in articles of footwear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.