| US 7,559,717 B2 | ||
| Subterranean conduit cover | ||
| Gary W. Salas, 11031 Hard Rock Rd., Austin, Tex. 78750 (US) | ||
| Filed on Jun. 12, 2007, as Appl. No. 11/811,849. | ||
| Prior Publication US 2008/0310914 A1, Dec. 18, 2008 | ||
| Int. Cl. E02D 29/14 (2006.01) | ||
| U.S. Cl. 404—25 [52/19; 220/787] | 15 Claims |
| 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.
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