| 摘要 |
<p>Covers useful for covering the open end of an access conduit that may contain fluid control equipment. A cover according to one embodiment of the disclosure comprises a disc-shaped base portion having a top surface and a bottom surface, with a plurality of risers attached to its bottom surface. There is a contact shoe attached to each riser, the contact shoes have a curvature, and are disposed sufficiently on the bottom surface of the base portion so as to exert an outward mechanical force against the inner wall of a conduit that is capped by a cover according to the disclosure, when such cover is in its installed position, thus providing a secure, yet conveniently removable access cover / conduit assembly.</p> |
