Short shoe spike
US6338208B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43C15/168
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A replaceable spike for sport shoes, molded from a durable plastic-type material, comprising a main body, concavo-convex disc having a top portion and a bottom portion. The top portion has a threaded post extending outwardly for removably attaching the spike to the sole of the shoe. The bottom portion, which is connected to the top portion, contains a plurality of nubs extending outwardly from the bottom portion for providing traction between the shoe and a supporting ground surface, while alleviating damage to the ground surface. Preferably, the nubs are at least three different sizes (small, medium, and large), based upon a fractal-like design, to provide surface roughness on multiple scales for increased traction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.