Synthetic grass sport surfaces
US6989179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2004 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jun 7, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A synthetic grass sport surface (10) suited for use in a baseball field includes an infill layer (16) of particulate material evenly spread among rows of ribbons (14) extending upwardly from a backing mat (12). The infill layer (16) includes a top covering sub-layer (26) of non-marking material, such as recycled rubber used in the manufacture of soles for running shoes. A checkered pattern of alternating color tones is formed on the synthetic grass surface (16) for improving the natural appearance thereof. The synthetic grass surface also includes a synthetic grass warning track (34) having different tangible properties to alert a player stepping thereon that he is approaching an obstacle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.