| 摘要 |
<p>AN AIR MAT APPARATUS An air mat apparatus comprises a mat body, an air source for feeding the mat body with air and a changeover valve connected between the air source and the mat body, the mat body being divided into a plurality of airtight chambers in grid-like arrangement, each airtight chamber being connected through an air pipe to the changeover valve, the changeover valve comprising a valve body and a drive motor for driving the valve body, the valve body comprising a changeover element driven by the drive motor and a cylindrical casing into which the changeover element is airtightly inserted so as to be rotatable.</p> |
