Pipe with an outer wrap

Patent metadata

Field	Value
Publication number	US-11898688-B2
Application number	US-202218145959-A
Country	US
Kind code	B2
Filing date	Dec 23, 2022
Priority date	Jun 5, 2015
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with an outer wrap. In one embodiment, a pipe includes an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. The pipe also includes an outer wrap applied to the outer wall. The outer wrap may include fibers and plastic. The outer wrap may span the corrugation crests producing a smooth outer surface.

First claim

What is claimed is:

1. A pipe, comprising:
an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section;
an outer wrap applied to the outer wall, the outer wrap spanning the corrugation crests producing a smooth outer surface;
a bell at a first end of the bore and integrally formed with the bore; and
a spigot at a second end of the bore,
wherein the spigot comprises a smaller outer diameter than an outer diameter of the bell,
wherein the outer wrap is an isotropic material that comprises a layer of fibers embedded in plastic.

2. The pipe of claim 1 , wherein the outer wrap completely covers the bell and the spigot.

3. The pipe of claim 1 , wherein the fibers comprise continuous strand fiberglass.

4. The pipe of claim 1 , wherein the fibers comprise continuous strand carbon fiber.

5. The pipe of claim 1 , wherein the fibers comprise short strands of fiberglass.

6. The pipe of claim 5 , wherein the short strands of fiberglass have a length ranging from about 0.25 inches to about 1 inch.

7. The pipe of claim 1 , wherein the plastic of the outer wrap is fused to the outwardly-extending corrugation crests.

8. The pipe of claim 1 , wherein outer wrap is applied in an overlapping helical pattern completely covering the corrugated outer wall.

9. The pipe of claim 1 , wherein:
the corrugated outer wall comprises plastic,
the outer wrap comprises plastic, and
the plastic of the corrugated outer wall and the plastic of the outer wrap are welded together.

10. The pipe of claim 1 , wherein the corrugation crests and the corrugation valleys form annular corrugations.

11. A pipe, comprising:
an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section;
an outer wrap applied to the outer wall, the outer wrap spanning the corrugation crests producing a smooth outer surface;
a bell at a first end of the bore and integrally formed with the bore; and
a spigot at a second end of the bore,
wherein the spigot comprises a smaller outer diameter than an outer diameter of the bell,
wherein the outer wrap completely covers the bell and the spigot, and
wherein the outer wrap is an isotropic material that comprises a layer of fibers embedded in plastic.

12. The pipe of claim 11 , wherein the fibers comprise continuous strand fiberglass.

13. The pipe of claim 11 , wherein the fibers comprise continuous strand carbon fiber.

14. The pipe of claim 11 , wherein the fibers comprise short strands of fiberglass.

15. The pipe of claim 11 , wherein the plastic of the outer wrap is fused to the outwardly-extending corrugation crests.

16. The pipe of claim 11 , wherein outer wrap is applied in an overlapping helical pattern completely covering the corrugated outer wall.

17. The pipe of claim 11 , wherein:
the corrugated outer wall comprises plastic,
the outer wrap comprises plastic, and
the plastic of the corrugated outer wall and the plastic of the outer wrap are welded together.

18. The pipe of claim 11 , wherein the corrugation crests and the corrugation valleys form annular corrugations.

Assignees

• Advanced Drainage Syst

Inventors

• Vanhoose Bill Russell
• Piazza Nicholas James
• Vitarelli Ronald Robert
• Atchison Owen Michael
• Frost Tyler James

Classifications

• F16L9/127 Primary

  the walls consisting of a single layer · CPC title

• B29C48/0018

  combined with shaping by orienting, stretching or shrinking, e.g. film blowing (B29C48/0017 takes precedence) · CPC title

• B29C48/09

  Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels · CPC title

• B29C48/131

  Curved articles · CPC title

• B29C48/151

  Coating hollow articles · CPC title