Corrosion resistant electrical conduit system

Patent metadata

Field	Value
Publication number	US-10283236-B2
Application number	US-201615550455-A
Country	US
Kind code	B2
Filing date	Feb 12, 2016
Priority date	Feb 13, 2015
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A corrosion resistant conduit system that protects against corrosion and against electrical shortage. The corrosion resistant conduit system includes: a multilayer conduit having a metal layer disposed between two polymeric layers, a conduit fitting having an electrically conductive component and a body having one or more layers of polymeric material, and means for conductively coupling the metallic layer of the multilayer tube to the electrically conductive component of the fitting, which provides a continuous electrical path throughout the corrosion resistant conduit system.

First claim

We claim:

1. A corrosion resistant conduit system comprising:
a multilayer conduit having a first end, a second end and a hollow region extending therebetween and comprising a metallic layer disposed between an exterior polymeric layer and the hollow region;
a conduit fitting comprising an electrically conductive component, a polymeric outer layer, an interior and first and second openings for receiving multilayer conduits and providing access to the interior;
means for conductively coupling the metallic layer of the multilayer conduit to the electrically conductive component of the fitting,
wherein a continuous electrical path is formed throughout the corrosion resistant conduit system,
wherein the electrically conductive component of the conduit fitting is a metallic layer disposed between the polymeric outer layer and the interior, and
wherein the conduit fitting further comprises an inner layer of polymeric material disposed between the metallic layer and the interior.

2. The corrosion resistant conduit system according to claim 1 , wherein the multilayer conduit further comprises an interior polymeric layer disposed between the metallic layer and the hollow region.

3. The corrosion resistant conduit system according to claim 1 , wherein the multilayer conduit further comprises an interior polymeric layer disposed between the metallic layer and the hollow region.

4. The corrosion resistant conduit system according to claim 3 , wherein the polymer materials of the interior and exterior layers of the multilayer conduit and the inner and outer layers of the conduit fitting include multiple layers of polymer materials or cross-linked polymers or comprise polyethylene and/or polypropylene.

5. The corrosion resistant conduit system according to claim 1 , wherein the metallic layer of the conduit and the electrically conductive component of the conduit fitting are fabricated from steel or aluminum or copper or titanium or magnesium.

6. The corrosion resistant conduit system according to claim 1 , wherein the electrically conductive component of the conduit fitting is a metallic body, a ground bar or an electrically conductive screw or a grounding ring.

7. The corrosion resistant conduit system according to claim 1 , wherein the electrically conductive component of the conduit fitting is a grounding ring comprising:
a substantially flat annular base having an exterior perimeter and an interior perimeter that defines an opening;
a continuous perimetrical side wall extending from the exterior perimeter of the annular base; and
one or more legs extending from the perimetrical side wall to distal ends, each leg having one or more teeth extending inwardly, wherein the teeth penetrate the exterior polymeric layer of the multilayer conduit pipe and electrically contact the metallic layer.

8. The corrosion resistant conduit system according to claim 1 , wherein the conduit fitting has a body made from a polymeric material and the electrically conductive component is a ground bar, a grounding terminal, a threaded metallic stud, or a threaded metallic boss.

9. The corrosion resistant conduit system according to claim 1 , wherein the conduit fitting is a push-fit, snap-fit, quarter-turn or releasable connector.

10. The corrosion resistant conduit system according to claim 1 , wherein the conduit fitting further comprises a passage extending between the first and second openings, wherein the passage has at least one conduit stop to limit the insertion of a conduit into the fitting.

11. The corrosion resistant conduit system according to claim 1 , wherein the electrically conductive component is an annular grounding band for electrically connecting the multilayer conduits.

12. A corrosion resistant conduit system comprising:
a multilayer conduit having a first end, a second end and a hollow region extending therebetween and comprising a metallic layer disposed between an exterior polymeric layer and the hollow region;
a conduit fitting comprising an electrically conductive component, a polymeric outer layer, an interior and first and second openings for receiving multilayer conduits and providing access to the interior;
means for conductively coupling the metallic layer of the multilayer conduit to the electrically conductive component of the fitting,
wherein a continuous electrical path is formed throughout the corrosion resistant conduit system, and
wherein the conduit fitting further comprises one or more apertures filled with a clear plastic material and located intermediate the first and second openings, wherein the apertures provide a view of the interior.

13. The corrosion resistant conduit system according to claim 1 , wherein the conduit fitting further comprises a plurality of teeth located between the first opening and the interior and between the second opening and the interior, wherein the plurality of teeth engage the polymeric exterior layer of the multilayer conduit and secure the multilayer conduit in the fitting.

Assignees

• Abb Technology Ag
• Tremelling Darren Dale
• Zant Nikolaus Peter
• Gao Yan
• Lam Letisha Mclaughlin
• Drane Mark
• Dinh Cong Thanh
• De La Borbolla Ian Rubin
• White Ronald
• Abb Schweiz Ag

Inventors

• Tremelling Darren Dale
• Zant Nikolaus Peter
• Gao Yan
• Lam Letisha Mclaughlin
• Drane Mark
• Dinh Cong Thanh
• De La Borbolla Ian Rubin
• White Ronald

Classifications

• H01B7/2806 Primary

  Protection against damage caused by corrosion · CPC title

• H01R4/64

  Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail · CPC title