| 摘要 |
<p>The present invention relates to a cover consisting of a frame and a lid, which both are coupled to each another by an articulated joint. Holes (2) for fastening anchors are provided along the circumference of the frame and a recess (3) for a pipe is exactly formed on the frame inner portion. Another recess being formed on the frame upper portion has a lug (4) at the point opposite to said articulated joint. An exactly machined hole passing through the frame is performed in said lug (4). The hole houses a bush (1) with a thread for a sunk screw. The lid, fitted in the frame, has on a side opposite to said articulated joint, a shaped element (5) with a hole for the sunk screw. In the lid surface being in contact with the frame, there is formed a dovetail groove (8) with an outlet (6), and a packing is inserted in said dovetail groove (8).</p> |
