GB2274746A - Shielded conduit - Google Patents

Shielded conduit Download PDF

Info

Publication number
GB2274746A
GB2274746A GB9300859A GB9300859A GB2274746A GB 2274746 A GB2274746 A GB 2274746A GB 9300859 A GB9300859 A GB 9300859A GB 9300859 A GB9300859 A GB 9300859A GB 2274746 A GB2274746 A GB 2274746A
Authority
GB
United Kingdom
Prior art keywords
conduit
coating
fitting
length
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9300859A
Other versions
GB9300859D0 (en
Inventor
John Anthony Rolfe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POWERCENTRE HOLDINGS Ltd
Original Assignee
POWERCENTRE HOLDINGS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by POWERCENTRE HOLDINGS Ltd filed Critical POWERCENTRE HOLDINGS Ltd
Priority to GB9300859A priority Critical patent/GB2274746A/en
Publication of GB9300859D0 publication Critical patent/GB9300859D0/en
Publication of GB2274746A publication Critical patent/GB2274746A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0406—Details thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

A conduit length or a conduit fitting has a coating which provides electromagnetic shielding. A steel conduit comprising a channel and a cover is coated externally or internally with a point loaded with an electrically conductive material. The coating may be continuous or a mesh, and may be applied before or after assembly of the conduit parts. The joints between parts are sealed with gaskets of rubber filled with aluminium. The conduit is used for cables carrying data signals.

Description

Data Cable Conduit Svstems This invention relates to conduit systems for cabling transmitting electrical data signals.
Unless such cabling is electromagnetically shielded the electrical data signals may be corrupted by external electromagnetic radiation sources (such as an adjacent like cable) and may be monitored externally from the electromagnetic radiation therefrom making the data unsecure.
In order to avoid these problems it is known to run such cabling in conduit systems comprising conduit lengths and fittings thereof made of aluminium, which provides electromagnetic shielding. However, such systems are expensive and an object of the present invention is to provide conduit lengths and fittings therefor which provide electromagnetic shielding but which are not so expensive as the known aluminium lengths and fittings.
To this end the invention includes a conduit length or a conduit fitting for use therewith for a conduit system for data cabling wherein the conduit length or fitting includes a coating providing the conduit length or fitting with an electromagnetic shield.
The invention also includes a method of providing a conduit length or fitting therefor with electromagnetic shielding which comprises applying a coating to the length or fitting which provides such shielding. It will be appreciated that the coating may be applied to conduit length and fittings prior to their assembly to form a conduit system, or in some circumstance to a system which has already been assembled and installed.
In order that the invention may be well understood, some embodiments thereof which are given by way of example only will now be described.
A preferred embodiment of the invention comprises a steel conduit length formed in two parts - that is an open channel and a cover for closing the channel.
In order to provide the conduit with an electromagnetic shield, an alumina loaded paint is applied to the parts to form a coating thereon. The coating may extend over only the external or only the internal surfaces of the channel and over only the outwardly facing or only the inwardly facing surface of the cover.
Conduit fittings, such as a box, bend, elbow or tee, for use with conduit lengths as described above are steel fittings - each of which may be formed as one part or by more than one part - provided with an alumina loaded paint coating.
The conduit length and the fittings therefor may be internally compartmentalised by partitioning so that cables can be run in respective compartments and in this case the partitioning is preferably also made of steel and provided with an alumina loaded paint coating. Joints between the parts of the conduit lengths and the parts of conduit fittings as well as between the conduit lengths and the conduit fittings are preferably gasketted using gaskets having electromagnetic radiation shielding properties. For example, rubber or other material gaskets loaded with aluminium or other particles may be utilised.
It will be understood that the invention is applicable to cases where the conduit length and conduit fitting are formed in materials other than steel, which materials provide no or at least inadequate electromagnetic shielding.
Also, it is to be understood that the coating may be provided by means other than an alumina loaded paint. Alternatives for the coating may comprise one or more of the following: copper, silver, nickel, iron, zinc, stainless steel, chromium carbide, chromium carbon fibre, glass fibre, graphite, glass beads and manganese in a suitable carrier. Also, the coating may comprise a plastics material such as p.v.c. or a nylon which advantageously may be applied by a dipping process or by spraying. It should also be noted that whilst the coatings described above would be continuous over the surfaces to which they are applied, the coating may instead comprise a mesh applied to those surfaces.

Claims (2)

CLAIMS:
1. A conduit length or a conduit fitting for use therewith for a conduit system for data transmission cabling, wherein said conduit length or fitting has a coating providing said conduit length or fitting with an electromagnetic shield.
2. A method of providing a conduit length or a conduit fitting for use therewith for a conduit system for data transmission cables with electromagnetic shielding comprising providing the conduit length or fitting with a coating which provides such shielding.
GB9300859A 1993-01-18 1993-01-18 Shielded conduit Withdrawn GB2274746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9300859A GB2274746A (en) 1993-01-18 1993-01-18 Shielded conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9300859A GB2274746A (en) 1993-01-18 1993-01-18 Shielded conduit

Publications (2)

Publication Number Publication Date
GB9300859D0 GB9300859D0 (en) 1993-03-10
GB2274746A true GB2274746A (en) 1994-08-03

Family

ID=10728854

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9300859A Withdrawn GB2274746A (en) 1993-01-18 1993-01-18 Shielded conduit

Country Status (1)

Country Link
GB (1) GB2274746A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006136412A1 (en) * 2005-06-22 2006-12-28 Witex Ag Set of floor tiles comprising intermediate elements for cable channels
WO2011027002A3 (en) * 2009-09-07 2011-06-30 Icore International Limited Cable-raceways
ITMI20100593A1 (en) * 2010-04-09 2011-10-10 Lamiflex Spa ULTRALIGHT CABLE CHANNEL FOR SHIELDING OF ELECTRIC AND MAGNETIC FIELDS.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279359A (en) * 1969-12-17 1972-06-28 Manfred Dahl Trunking for the protected passage of conduits, tubing, pipes or the like
EP0159307A1 (en) * 1984-03-20 1985-10-23 Kabelwerk Eupen AG Cablerie d'Eupen SA Kabelfabriek Eupen NV Method for applying an electrically conducting wire to a protection tube for a cable
EP0330082A2 (en) * 1988-02-20 1989-08-30 Zipper-Technik Gmbh Cable holding device
GB2249673A (en) * 1990-09-12 1992-05-13 Shrinemark Limited Shielded conduit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279359A (en) * 1969-12-17 1972-06-28 Manfred Dahl Trunking for the protected passage of conduits, tubing, pipes or the like
EP0159307A1 (en) * 1984-03-20 1985-10-23 Kabelwerk Eupen AG Cablerie d'Eupen SA Kabelfabriek Eupen NV Method for applying an electrically conducting wire to a protection tube for a cable
EP0330082A2 (en) * 1988-02-20 1989-08-30 Zipper-Technik Gmbh Cable holding device
GB2249673A (en) * 1990-09-12 1992-05-13 Shrinemark Limited Shielded conduit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006136412A1 (en) * 2005-06-22 2006-12-28 Witex Ag Set of floor tiles comprising intermediate elements for cable channels
WO2011027002A3 (en) * 2009-09-07 2011-06-30 Icore International Limited Cable-raceways
US8748746B2 (en) 2009-09-07 2014-06-10 Icore International Limited Cable-raceways
ITMI20100593A1 (en) * 2010-04-09 2011-10-10 Lamiflex Spa ULTRALIGHT CABLE CHANNEL FOR SHIELDING OF ELECTRIC AND MAGNETIC FIELDS.

Also Published As

Publication number Publication date
GB9300859D0 (en) 1993-03-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)