Liquid drainage unit
AssigneeRing Industrial Group, L.P.
InventorCarl D. Ring
Life of this patent
Estimating the term…
Abstract
A pre-assembled drainage line unit includes a flexible longitudinally extending perforated sleeve member and a loose aggregation of lightweight elements contained within the sleeve member. A pliable, water permeable barrier material extends along the sleeve member and overlies at least a portion of the aggregation to prevent the passage of solid materials, such as sand and dirt, into the aggregation.
Claims14
A preassembled drainage line unit comprising a longitudinally extending perforated sleeve member, a loose aggregation of lightweight plastic elements contained within said sleeve member, and barrier means extending longitudinally along said sleeve member and overlying at least a portion of said aggregation of elements to prevent the passage of solid materials into said aggregation of elements, said barrier means being located between said sleeve member and said aggregation of elements.
A preassembled drainage line unit comprising a longitudinally extending perforated conduit, a loose aggregation of lightweight plastic elements surrounding said conduit, a generally cylindrical mesh tube of netting enveloping said aggregation and bounding the same relative to said conduit, the ends of said netting being respectively fastened about the ends of said conduit, and barrier means extending longitudinally along said tube of netting and overlying at least a portion of said aggregation of elements to prevent the passage of solid materials into said aggregation, said barrier means being located between said tube of netting and said aggregation of elements.
A method of manufacturing a drainage line unit, the method including the steps of:
- closing a forward end of a continuous sleeve of netting and of a barrier sheet material;
- feeding the continuous sleeve of netting and the barrier sheet along a direction of manufacture with the barrier sheet located within the sleeve of netting;
- feeding a plurality of loose aggregate into the sleeve of netting to substantially fill the space within the netting, the barrier sheet located between the sleeve of netting and the aggregate and angularly overlying at least a portion of the aggregate so as to prevent the passage of solids into the aggregate.
Dependencies are inferred from the claim text.