Patent ID: 6460574
Filing Date: 2002-10-08
Classification: E03F,Y02A,Y10T

Abstract:
A sewer pipe structure comprising a storage tank connectable at an upstream end to an inflow pipe to receive therefrom an inflow of sewage or sewage/water mixture and connectable at a downstream end to an outflow pipe through which the sewage or sewage/water mixture can flow from the storage tank, wherein:the sewage or sewage/water mixture accumulated in the storage tank has a volume which increases during a period of high rate of inflow and which decreases during a subsequent period of lower rate of inflow; and wherein the sewer pipe structure is formed from modular prefabricated sections which include at least: one storage pipe section which has a cross-sectional area greater than the cross-sectional areas of the inflow pipe and the outflow pipe and which forms at least part of the storage tank; an inflow end cap fastenable to a first end of the sewer pipe structure to thereby close the first end of the pipe structure, the inflow end cap having connecting means for connecting the inflow end cap to the inflow pipe and for allowing inflow of sewage or sewage/water through the inflow end to the pipe section; and an outflow end cap fastenable to a second end of the sewer pipe structure to thereby close the second end of the pipe structure, the outflow end cap having connecting means for connecting the outflow end cap to the outflow pipe and for allowing outflow of sewage or sewage/water mixture from the pipe section through the outflow end cap to the outflow pipe.