Corrugated pipe with perforation protecting cover
AssigneeAdvanced Drainage Systems, Inc.
InventorJames B. Goddard
Life of this patent
Estimating the term…
Abstract
A pipe having an axially extending bore is defined by a corrugated outer wall having alternating, axially-adjacent, annular crests and valleys. The wall of the pipe has a hole disposed in a valley which provides fluid communication between the bore and the outside. The pipe also has a cover which extends between and is attached to axially adjacent crests. The cover is disposed over the hole to prevent material in which the pipe may be disposed from obstructing the hole and permitting fluid flow through the hole.
Claims19
An elongated pipe comprising:
- a corrugated outer wall having alternating, axially-adjacent, annular crests and valleys and having an axially-extending bore, the corrugated outer wall comprising:
- a fluid-impermeable valley;
- and
- two porous valleys disposed on opposing sides of the fluid-impermeable valley, and having a plurality of through-holes disposed therein;
- and
- a semi-cylindrical, fluid-impermeable cover comprising:
- a radially, inward-extending ridge disposed near an axial midpoint of the cover;
- and
- two uncorrugated portions extending away from opposing sides of the radially, inward-extending ridge;
- wherein the radially, inward-extending ridge engages the fluid-impermeable valley of the corrugated outer wall such that the two uncorrugated portions extend over at least the two porous valleys, thereby forming an open flowpath between the plurality of through-holes disposed in the porous valleys and backfill surrounding the corrugated outer wall so as to prevent the backfill from obstructing the plurality of through-holes.
A distribution system comprising:
- a corrugated pipe configured to be buried within a material, and having a plurality of annular crests and valleys and a passage, the corrugated pipe comprising:
- a fluid-impermeable valley;
- and
- two porous valleys disposed on opposing sides of the fluid-impermeable valley, and having a plurality of perforations for distributing a substance between the passage and the material;
- and
- a semi-cylindrical, fluid-impermeable cover comprising:
- a radially, inward-extending ridge disposed near an axial midpoint of the cover and fitted within the fluid-impermeable valley of the corrugated outer wall, and
- two uncorrugated portions extending away from opposing sides of the radially, inward-extending ridge;
- wherein the two uncorrugated portions extend over at least the two porous valleys, thereby forming an open flow path between the plurality of perforations and the material in which the corrugated pipe is buried so as to prevent the material from obstructing the plurality of perforations when the corrugated pipe is buried within the material.
A corrugated pipe assembly configured to be buried within a material, the corrugated pipe assembly comprising:
- a corrugated pipe having a plurality of annular crests and valleys, and a passageway, the corrugated pipe comprising:
- a plurality of fluid-impermeable valleys;
- and
- two porous valleys disposed on opposing sides of each of the plurality of fluid-impermeable valleys, and having a group of perforations disposed in each of the porous valleys;
- and
- a plurality of semi-cylindrical, fluid-impermeable covers, each cover comprising:
- a radially, inward-extending ridge disposed near an axial midpoint of the cover;
- and
- two uncorrugated portions extending away from opposing sides of the radially, inward-extending ridge;
- wherein the ridge of each cover engages one of the plurality of fluid-impermeable valleys, thereby maintaining an open flowpath for distributing a substance between the material and the passageway via the groups of perforations.
Dependencies are inferred from the claim text.