Spring overshoe
US5845419A · kind A · utility
Inventor
Key dates
| Filing date | Sep 23, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Sep 23, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B25/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A spring shoe that includes a foot engaging portion, an upper platform, an intermediate platform, a first specifically configured spring, a lower platform, and a second specifically configured spring. The foot engaging portion engages the foot of the user. The upper platform is attached to the foot engaging portion. The intermediate platform is spaced vertically below the upper platform and is attached thereto by the first specifically configured spring. The lower platform is spaced vertically below the intermediate platform and is attached thereto by the second specifically configured spring. Each of the first and second specifically configured springs are a one-piece continuous wire formed into a pair of spaced-apart conically-shaped helical coils connected to each other by an integrally formed torsion bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.