| 摘要 |
Provided herein are covers useful for covering the open end of an access conduit that may contain fluid control equipment. A cover according to the invention 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 associated with each of the risers, and 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 invention, when such cover is in its installed position, thus providing a secure, yet conveniently removable access cover/conduit assembly.
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