# US 2018/0025807 A1 · Corrosion resistant electrical conduit system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025807 A1 - Document ID: US20180025807A1 - Status: Published application - Kind: A1 - Application number: 15/550,455 - Filed: 2016-02-12 - Published: 2018-01-25 - Earliest claimed: 2015-02-13 - Assignees: ABB Technology AG - Applicants: ABB Technology AG - Inventors: Darren Dale Tremelling; Nikolaus Peter Zant; Yan Gao; Letisha McLaughlin Lam; Mark Drane; Cong Thanh Dinh; Ian Rubin de la Borbolla; Ronald White - Web page: https://patentgrep.com/patent/US20180025807A1 ## CPC - H01B 7/2806: {Protection against damage caused by corrosion} - H01R 4/64: Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## 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. ## Claims ### 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; and wherein a continuous electrical path is formed throughout the corrosion resistant conduit system. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) The corrosion resistant conduit system according to claim 1, wherein the electrically conductive component of the conduit fitting is a metallic layer disposed between the polymeric outer layer and the interior. ### Claim 4 (depends on 3) The corrosion resistant conduit system according to claim 3, wherein the conduit fitting further comprises an inner layer of polymeric material disposed between the metallic layer and the interior. ### Claim 5 (depends on 4) The corrosion resistant conduit system according to claim 4, wherein the multilayer conduit further comprises an interior polymeric layer disposed between the metallic layer and the hollow region. ### Claim 6 (depends on 5) The corrosion resistant conduit system according to claim 5, 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. ### Claim 7 (depends on 1) 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. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 1) 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. ### Claim 10 (depends on 1) 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. ### Claim 11 (depends on 1) The corrosion resistant conduit system according to claim 1, wherein the conduit fitting is a push-fit, snap-fit, quarter-turn or releasable connector. ### Claim 12 (depends on 1) 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. ### Claim 13 (depends on 1) 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. ### Claim 14 (depends on 1) The corrosion resistant conduit system according to claim 1, 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. ### Claim 15 (depends on 1) 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.