Patent ID: 7574831
Filing Date: 2009-08-18
Classification: E02D,E03F

Abstract:
1. A modular passageway component comprising: a generally cylindrical body including an upper portion, a lower portion, and a generally flat annular ring intermediate the upper portion and the lower portion; the upper portion including a vertical wall extending upwardly from and terminating at a bottom of the vertical wall at the generally flat annular ring, the vertical wall adapted to receive a second passageway component; the lower portion including a pan having an opening therein, the pan extending downwardly from and terminating at a top of the pan at the generally flat annular ring and having an inclined shape in cross-section, said inclined shape slanting inwardly, from the top of the pan at the generally flat annular ring to a bottom of the pan, toward a central axis of the generally cylindrical body, and the pan being adapted to seatably receive a cover; and a cover seated in the pan, the cover having a shape complementary to the pan.