Patent ID: 8967674
Filing Date: 2015-03-03
Classification: B29C,B29K,B29L,F16L,Y10S

Abstract:
1. A ribbed pipe fitting to be used for connecting large-diameter corrugated pipe in underground burial applications, comprising: (a) a main section of pipe of twelve to sixty inches internal diameter having a generally cylindrical wall structure centered about an axis with a fluid-flow passageway extending therethrough; (b) said wall structure having a generally smooth inner circumferential surface and an exterior surface defined by a plurality of axially spaced circumferentially extending solid ribs, said plurality of ribs being uniformly shaped and spaced throughout the entire length of said exterior surface; (c) each of said ribs being defined by a crown portion and a pair of opposing radially extending circumferential sidewalls connecting said crown portion to a circumferentially extending waterway section of said wall structure disposed between said rib and an adjacent said rib; (d) the dimensional profile of said wall structure being characterized by the following table: (e) said wall structure being rotationally molded as a single one-piece solid, seamless, modular unit.