Divided conduit

Patent metadata

Field	Value
Publication number	US-9673603-B2
Application number	US-201514711241-A
Country	US
Kind code	B2
Filing date	May 13, 2015
Priority date	Apr 18, 2011
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A divided conduit containing a thermoplastic conduit and at least one strip-shaped film having a first longitudinal edge and a second longitudinal edge which are embedded into the inner surface of the conduit forming at least two flexible, longitudinal channels for enveloping cables or other elongated structures.

First claim

What is claimed is:

1. A divided conduit comprising a thermoplastic conduit having an inner surface and a strip-shaped film having a first longitudinal edge and a second longitudinal edge, wherein the thermoplastic conduit comprises a first thermoplastic polymer having a first melting temperature, wherein the strip-shaped film comprises a second thermoplastic polymer having a second melting temperature, wherein the second melting temperature is greater than the first melting temperature, wherein the first longitudinal and second longitudinal edges of the strip-shaped film are embedded in the inner surface of the conduit forming at least two flexible, longitudinal channels for enveloping cables.

2. The divided conduit of claim 1 , wherein the distance between the first longitudinal and second longitudinal edge of the strip-shaped film is between about 32 and 60% of the circumference of the inner surface of the conduit.

3. The divided conduit of claim 1 , wherein the distance between the first longitudinal and second longitudinal edge of the strip-shaped film is greater than the inside diameter of the conduit.

4. The divided conduit of claim 1 , wherein the divided conduit comprises at least two strip-shaped films each having a first longitudinal edge and a second longitudinal edge, wherein the first longitudinal and second longitudinal edges of the strip-shaped films are embedded in the inner surface of the conduit forming at least three flexible, longitudinal channels for enveloping cables.

5. The divided conduit of claim 1 , wherein at least one of the flexible, longitudinal channels further comprise a pull line.

6. The divided conduit of claim 1 , wherein at least one of the flexible, longitudinal channels further comprise a cable.

7. The divided conduit of claim 1 , wherein the film comprises perforations.

8. The divided conduit of claim 1 , wherein the film comprises fiber reinforcements.

9. A divided conduit comprising a thermoplastic conduit having an inner surface and a strip-shaped film having a first longitudinal edge and a second longitudinal edge, wherein the thermoplastic conduit comprises a first thermoplastic polymer having a first melting temperature, wherein the strip-shaped film comprises a second thermoplastic polymer having a second melting temperature, wherein the second melting temperature is greater than the first melting temperature, wherein the film comprises fiber reinforcements, wherein the strip-shaped film is oriented, and wherein the first longitudinal and second longitudinal edges of the strip-shaped film are embedded in the inner surface of the conduit forming at least two flexible, longitudinal channels for enveloping cables.

10. The divided conduit of claim 9 , wherein at least one of the inner surface of the conduit and the strip-shaped film comprises a textured surface.

11. The divided conduit of claim 9 , wherein the divided conduit comprises at least two strip-shaped films each having a first longitudinal edge and a second longitudinal edge, wherein the first longitudinal and second longitudinal edges of the strip-shaped films are embedded in the inner surface of the conduit forming at least three flexible, longitudinal channels for enveloping cables.

12. The divided conduit of claim 9 , wherein at least one of the flexible, longitudinal channels further comprise a pull line.

13. The divided conduit of claim 9 , wherein the film comprises perforations.

14. A divided conduit comprising a thermoplastic conduit having an inner surface and a strip-shaped film having a first longitudinal edge and a second longitudinal edge, wherein the strip-shaped film comprises a thermoset polymer, wherein the first longitudinal and second longitudinal edges of the strip-shaped film are embedded in the inner surface of the conduit forming at least two flexible, longitudinal channels for enveloping cables.

15. The divided conduit of claim 14 , wherein the film comprises fiber reinforcements.

16. The divided conduit of claim 14 , wherein the film comprises perforations.

17. The divided conduit of claim 14 , wherein the divided conduit comprises at least two strip-shaped films each having a first longitudinal edge and a second longitudinal edge, wherein the first longitudinal and second longitudinal edges of the strip-shaped films are embedded in the inner surface of the conduit forming at least three flexible, longitudinal channels for enveloping cables.

18. The divided conduit of claim 14 , wherein at least one of the flexible, longitudinal channels further comprise a pull line.

19. The divided conduit of claim 14 , wherein the distance between the first longitudinal and second longitudinal edge of the strip-shaped film is between about 32 and 60% of the circumference of the inner surface of the conduit.

Assignees

• Milliken & Co

Inventors

• Hepfinger John M
• Zeiler Bernhard

Classifications

• B29C47/062

  Operations & Transport · mapped topic

• H02G3/0481

  with a circular cross-section (H02G3/0468, H02G3/0475 take precedence) · CPC title

• B29C65/028

  making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined · CPC title

• F16L11/121

  specially profiled cross sections · CPC title

• F16L9/19

  Multi-channel pipes or pipe assemblies · CPC title