초록 ▼

The improved pipe may advantageously comprise a `D` shape wherein the widened, bottom contacting, base portion of the pipe is the flat portion of the `D`. The pipe may also have wings which extend the width of the base portion beyond the point at which the curved wall of the pipe contacts the base p

The improved pipe may advantageously comprise a `D` shape wherein the widened, bottom contacting, base portion of the pipe is the flat portion of the `D`. The pipe may also have wings which extend the width of the base portion beyond the point at which the curved wall of the pipe contacts the base portion. The pipe may also have filter plugs removeably engaged in fluid inlet/outlet orifices. In some embodiments, the orifices will be positioned on the bottom of the pipe as part of the widened bottom contacting base portion.

대표청구항 ▼

[ What is claimed is:] [1.] A pipe comprising:an exterior surface, the surface comprising a widened, bottom contacting, base portion, the base portion having edges and being non-convex adjacent edges;a plurality of orifices;a plurality of filter plugs removeably engaged in the orifces such that the

[ What is claimed is:] [1.] A pipe comprising:an exterior surface, the surface comprising a widened, bottom contacting, base portion, the base portion having edges and being non-convex adjacent edges;a plurality of orifices;a plurality of filter plugs removeably engaged in the orifces such that the plugs can be installed or removed without replacing the pipe, the plugs;allowing the passage of liquids through the plugs, and thus through the orifices;the plugs sized and dimensioned to prevent the flow of liquids through the orifices unless the liquids pass through the plugs;and the plugs preventing the passage of at least some solids sized smaller than the orifices from passing through the orifices.