| 摘要 |
<p>A ground cover (1) for protecting the grass of sports fields includes a plurality of tubes (2) joined together along seams (3) and having open ends (6) and partially closed ends (7). In use, air is pumped into the cover (1) through an inflation inlet (4) and passes into a distributing tube (5) from which it enters all the other tubes (2). The ends (6) are greater in height than the ends (7) of the tubes (2) so as to provide a slope down which rainwater may fall. With the tubes (2) inflated, a subatmospheric pressure is created beneath the cover by extracting air through an outlet (8), and the reduced air pressure draws the cover onto the ground, thus opposing wind forces which may tend to lift the cover. Such a cover can be used without permanent securing means and is less likely to cause grass disease than conventional arrangements.</p> |
