Wheel for roller skate and the like
US5129709A · kind A · utility
Inventor
Key dates
| Filing date | May 2, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | May 2, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63C17/24
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A wheel adapted to be rotated about a normally horizontal axis perpendicular to a normal direction of travel has a hub centered on the axis and a central core body made of a hard material and coaxially surrounding the hub. This core body has an annular outer surface centered on and turned radially away from the axis and having a pair of axially opposite edges. A pair of similar side-wall bodies of a soft material symmetrically flank and are joined to the core body and each have an annular surface having a radial outer edge joining the core body at a respective one of the edges thereof and a radial inner edge at the hub. The surfaces of the side-wall bodies curve continuously from their outer edges to their inner edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.