Shoe with elastically flexible extension
US9661896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Mar 28, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B23/227
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A footwear article includes a foot-attachment structure configured to attach to a foot, and longitudinally opposite front and rear ends. The footwear article further includes a downward-facing exposed sole surface. A cantilever extension, in a natural condition, adjoins the sole surface at a junction, and projects rearwardly and downwardly from the junction. The extension has a proximal end and a distal end that are longitudinally opposite each other. The extension is supported at only the proximal end. The extension is configured to elastically resist upward rotation of the extension toward the sole, and is configured to be pushed upward toward the sole by the upward force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.