Patent ID: 7559717
Filing Date: 2009-07-14
Classification: E03B

Abstract:
1. A cover useful for covering an open end of a tubular access conduit, which comprises: a) a substantially-circular, disc-shaped base portion having a top surface, a bottom surface, and a circumferential edge; b) a circular rib disposed on said bottom surface of said base portion, wherein said circular rib itself has a top surface which is in a raised disposition with respect to said bottom surface, said circular rib forming a ring of raised elevation on said bottom surface; c) a plurality of risers attached to and extending upwardly from said circular rib; d) a plurality of contact shoes, each of which contact shoes are attached to one and only one of said risers, said contact shoes each having a textured convex outer surface, and a curvature which is different from the curvature of said circular rib, when said cover is viewed from the bottom perspective, and wherein said cover is a single injection-molded article.