摘要 |
<p>The protection device comprises support elements, which serve as mountings and distance holder from the covering and from its component pieces. An upper protection layer is provided in form of a grid or mesh made of metallic material. An emptying unit is provided, which has multiple structural plates made of metallic grilling (40,41). Each plate is made of parallel support rods made of metallic material by rectangular cross-section and orthogonal rods made of metal. An independent claim is also included for a start-up system comprises a protection device and a clamping portion made of copper, aluminum, iron or metallic alloy.</p> |