GB2184512A - Fire resistant covering - Google Patents

Fire resistant covering Download PDF

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Publication number
GB2184512A
GB2184512A GB08629414A GB8629414A GB2184512A GB 2184512 A GB2184512 A GB 2184512A GB 08629414 A GB08629414 A GB 08629414A GB 8629414 A GB8629414 A GB 8629414A GB 2184512 A GB2184512 A GB 2184512A
Authority
GB
United Kingdom
Prior art keywords
heat
protective casing
covering
resistant
tape
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.)
Granted
Application number
GB08629414A
Other versions
GB8629414D0 (en
GB2184512B (en
Inventor
Heinz Eilentropp
Jean Jaques Desbordes
Walter Steffes
Klaus Schwamborn
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.)
HEW Kabel Heinz Eilentropp KG
Original Assignee
HEW Kabel Heinz Eilentropp KG
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 HEW Kabel Heinz Eilentropp KG filed Critical HEW Kabel Heinz Eilentropp KG
Publication of GB8629414D0 publication Critical patent/GB8629414D0/en
Publication of GB2184512A publication Critical patent/GB2184512A/en
Application granted granted Critical
Publication of GB2184512B publication Critical patent/GB2184512B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/10—Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/4436—Heat resistant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Insulated Conductors (AREA)
  • Thermal Insulation (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
  • Insulating Bodies (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Inorganic Insulating Materials (AREA)
  • Fireproofing Substances (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

A protective casing against the external action of heat and fire for a rubber tube (1) consists of a mica-comprising tape wrapping (2) directly surrounding the tube (1), a dense wrapping (6) of ceramic threads, preferably metal-coated disposed on top of this, and a netted material (7) based on glass silk in the form of a compression sleeve holding these coverings together. Preferably a heat-reflecting covering (4) e.g. aluminium coated glass silk is interposed between the wrappings (2) and (6) and a non-inflammable heat-resistant outer sheath (8) e.g. of silicone rubber is provided. The tube (1) may carry fluid or electrical or optical cables. <IMAGE>

Description

SPECIFICATION Protective casing for rope-shaped material The present invention relates to a protective casing for rope-shaped material serving to protect the material against the action of heat and fire from outside. Examples of such rope-shaped material include media-carrying pipes, hoses or pipe-bundle cables, and electrical cables or lines, for the pneumatic, hydraulic, electrical or optical tra nsm ission of, for exam ple, control pulses, measurements or the like.
Media-carrying pipes, hoses or pipe-bundle cables are used in the most varied engineering fields. For example, high-pressure or ultra-high-pressure hoses, (also known as hydrauliccables),are required for hydraulic actuating and driving systems; like the pipe-bundle cables, they also serve as power and information carriers in pneumatic or hydraulic measuring, control, or regulating systems. Such pressure-transmitting cables are used wherever electrical transmission is disadvantageous or not permissible on safety grounds (e.g. because of a fire risk).
In the event of a fire, or when the required hoses, pipes or pipe-bundle cables are exposed to heating producing similar effects, the aim, particularly in ship-building, but also in the chemical or petrochemical industry, is to keep the pressurized, media-carrying hoses or pipes in working orderfor as long as possible in orderto be able to continue to use the pneumatic or hydraulic lines to carry outthe measuring and regulating operations required on safety grounds after the fire has been detected, for example, in automatic installations with remote transmission.
For this purpose, it is also already known,for example, forthe transmission of measurements, control pulsesorthe liketousepipe-bundlecables with heat-resistant metal pipes, or for pipe-bundle cables to be run in metal pipes, and fortheseto be provided with a suitable thermal insulation. Apart from the high cost of such arrangements and the high installation cost involved in laying them, these known designs cannot always be used because of laying requirements.
In the case of pipe designs with small, media-carrying pipes made of thermoplastic materials, it is also already known for a fire-resistant plastics mixture to be used fora sheath. However, this melts and runs at highertemperatures and, in the event of a fire, can very rapidly lay bare the medium-carrying pipe or hose and expose it directly to the action of the external heat. Thus, operation can no longer be maintained.
The development of electrical cables or lines with improved fire-resisting properties is also a priority task in electrical power or data transmission engineering. Materials for insulation and/orsheaths with flame-resisting additives have now become generally known, as also is the provision of fire-resisting orthermaily-insulating layers in the structure of the cable or line. The objective is always to improve the maintenance of operation, i.e. to extend the time for which emergency operation can be maintained to trip switching operations.
However, so far, neither selection of specific materials nor changes in the cable or line structure have led to significant improvements in fire-resisting characteristics, leaving aside the problems of converting a cable or line design optimisedfor electrical purposes to one suitable for mechanical purposes.
The underlying object of the invention is therefore to find a way of protecting such types of pipes, hoses, cables or lines made of or containing materials which are very sensitive to heat when they are exposed to relatively high temperatures, e.g. in the event of a fire, so that operation is still maintained for an adequate time. This problem is particularly evident whenever hydraulic high-pressure hoses, for example, are pressurized to pressures of, for example, 100 bar and over.
According to the invention, there is provided a protective casing for rope-shaped materials against the external action of heat and fire comprising an inner covering consisting at least predominantly of an inorganic material and applied directly to the rope-shaped material, a heat-distributing covering of high temperature-resistant material overlying said single-ormulti-layercovering,andafurther covering of heat-resistant and/or fire-resistant material surrounding said heat-distributing covering and acting as a compression sleeve. The casing will normally include an outer sheath of non-inflammable, heat-resistant material.
The particular advantages of such a layered structure line is the fact that the rope-shaped material, e.g. a medium or media-carrying core ora cable, are protected against the direct action of heat in that the overlying coverings and layers already ensure uniform distribution of the heat over the circumference and the length of the hose, pipe or cable, either by thermal reflection orthermal conduction. This screening zone in which the use of materials which breakdown at increased temperatures is deliberately avoided, undergoes additional compression or consolidation bya kind of compression sleeve.This results in the inner coverings remaining in their concentric positions around a media-carrying pipe or pipe-bundle cable, or an electrical cable even when exposed to heat, and thus acting against the medium pressure prevailing inside the hose or pipe, for example, over its entire circumference. The durability of a hose, pipe or pipe-bundle cable protected by a casing in accordance with the invention is significantly increased in spite of the high operating pressures prevailing at the temperatures encountered during a fire. The same is also trueforthe live cores of electrical cables, for example, which can even survive a fire when they are located within a protective casing in accordance with the invention.
One particularly advantageous embodiment ofthe invention is obtained when the protective casing comprises a wrapping which directly surrounds the rope-shaped material and consists at least predominantly of an inorganic material, a heat-reflecting covering over this wrapping, a heat-distributing covering of high temperature-resistant material applied over it, at least one netting of a heat and/orfire-proof material disposed over the heat-distributing covering and acting as a compression sleeve, and an outer sealing protective sheath of a fire-resistant or fire-prooftype.
In the case of hydraulic hoses, for example, such a type of sheath allows operation to be maintained at temperatures in excess of 8000C and operating pressures of more than 180 bars for an adequately long period.
It has also been found to be desirable forthe inorganic layer or layers directly surrounding the hose pipe, pipe-bundle cable, or electrical cable or line to be made of mica, for example, disposed on a substrate tape, in the first place to improve the flexibility ofthe protective casing and secondly to increase operating reliability. These tapes, which may advantageously be of differentwidths in the individual layers, arethen wound around the rope-shaped material in the same or in different directions of winding with the mica coating advantageouslyfacing inwardly.
The heat-reflecting covering is preferably made of a metal-coated glass silktape. In this case, two tapes wound edgeto edge could, for example, be used and, in orderto obtain a closed radiation shield, itis particularly importantthatthe metal side ofthetape should face outwards, i.e.towards any possible source of heat. Alternatively, the heat-reflecting covering may be of a metal applied by vapour deposition.
The heat-distributing covering is preferably made of one or more layers of densely-wrapped heat-resistantthreads orfibres. These threads or fibres, which may be made of ceramic material or contain such a material and coated with metal, form a good heat conducting and distributing layer by virtue ofthe metal coating and also form a kind of heat insulation inthe direction of the elongate material by virtue ofthe insulating heat-resistant core.
All the layers or coverings referred to so far as surrounding the medium or media-carrying core are influenced by an adjoining covering of heat-resistant material, preferably made of a netted glass silk material. This covering simultaneously acts as a compression sleeve for the coverings lying beneath it, particularly in the event of a fire, when it is important that the protective casing should ensure that operation is maintained for a certain length of time.
To produce a protective casing in accordance with the invention, it is preferred to proceed byfirst wrapping a multi-layer bandage of mica-coated tapes around the pipe, hose, pipe-bundle cable or electrical cable or line which is itself in working order, with the mica facing inwardly, and then winding a metal-coated glass silktape on top ofthe wrapping with the coating facing outwards. This layer of tape is then denselywrapped with metal-coated ceramicthreads, for example, and covered first with a netted glass silk material acting as a compression sleeve, and lastly with a fire-resistant and non-inflammableouterprotective sheath.The outer sheath can be made of any suitable materials, such as, for example, high temperature-resistant and flame-resistant elastomers or thermoplastic materials; such as materials based on fluoropolymers in the form of tapes, eithersintered or unsintered. If extrudable materials are to be used for manufacturing reasons, preference will still be given to materials exhibiting such resistance to high temperatures. Silicone rubbers have been found to be particularly suitable in this connection, e.g. forwater-proofcoverings.
Alternatively, the outer sheath may be in the form of a wrapping of steel tape, or may be made of an inorganic material.
Advantageously, the mica-coated tapes can have different widths from layerto layer; expedientlythey are wound edge to edge increasing inwidthtowards the outside.
The invention will now be further described with reference to the drawings, in which: Figure 1 is a schematic side view of part of a flexible,flame-proof hydraulic pressure hose having a protective casing according to the invention, the casing being progressively cut away to illustrate its construction; and Figures2 and 3 are each temperature/time graphs to illustrate respectively two tests carried out on hoses as shown in Figure 1.
Referring to Figure 1,a rubber high pressure hose 1 of a known type is directly surrounded by a covering 2 made of mica ora material containing mica. Expediently mica-coated tapes 3 are used, having a glass silk substrate with the mica coating facing inwardly. The covering 2 is covered by a wrapping 4 made by winding one or more tapes of glass silk coated with aluminium; the metal coating serves as a heat shield and therefore faces outwardly. The wrapping 4 is covered with a heat-distributing covering 5 made of ceramic th reads or fibres 6 wound denselyaroundthe wrapping 4.
An adjoining glass silk netting layer7 which can also be formed by a glass silktape, particularly with rope-shaped material of fairly large diameter, embraces the ceramic threads firmly; it also acts on the underlying coverings 2 and 4. Byway of example, an outersealing sheath 8 is made ofaflame-resistant silicone rubberwhich is highly resistant to tearing.
Despite the presence of the multi-layer protective casing in accordance with the invention and the long endurance times thereby achieved in the event of a fire, the hydraulic hose is still adequatelyflexible; the hose can also be installed in a space-saving fashion.
With an outside diameter of 25 mm, for example, for the inner pressure hose 1 and an 8 mm thick mica covering 2, the outside diameter of the hose protected by a casing in accordance with the invention only increases 55 mm overall.
The following experiments were carried out on hydraulic hoses having a protective casing in accordance with the invention: Experiment (a) A hydraulic hose constructed as described with reference to Figure 1 was secured so asto extend horizontally over a tray filled with oil. Five temperature sensors (numbered 9 to 13 in Figure 2) were positioned at intervals of 10 cm in a line extending cross-wise of the house in a plane parallel to the plane of the hose with one sensor 13 secured directly to the surface of the hose at the side thereof facing the tray of oil. Two furthertemperature sensors were respectively located within the hose 1 (sensor 14) and between the hose 1 and the covering 2 (sensor 15). The hydraulic hose was in an unpressurised state.
The oil was ignited and the maximum temperature ofabout840"Cwas reached after about 3 minutes.
The fire of the heat source (a predetermined quantity of burning hydraulic oil) went out after 15 minutes.
The temperature measured by the sensor 14 with in the hose 1 was about 11 00C during the fire; the temperature measured by sensor 15 between the hose 1 and the covering 2 was about 1 200C. The test results are shown in Figure 2.
Experiment (h) Three hydraulic hoses constructed as described with reference to Figure 1 and provided with a protective casing in accordance with the invention, were tested simultaneously; these hoses were additionally subjected to an internal static pressure of 190 bars for the test period of 28 minutes.
The test results are shown in Figure 3. Here the curves Temp. 9 to Temp. 12 reproduce the temperatures in the vicinity ofthe hoses; the curves T 16 to 18 showthetemperatureofthe pressurising medium with in the three hydraulic hoses used in the test.
These tests show that the operating capacity ofthe medium-carrying hose beneath a protective casing in accordance with the invention is maintained without the external temperature having any significant effect. Despite the high operating pressure prevailing in the high temperature (fire) conditions, the hose remains undamaged.
The invention is not, however, limited to this case which isparticularlycritical owingtothe simultaneous action of the high temperature produced by the fire and the internal pressure. Any pipe or any pipe-bundle cable made of metal or non-metallic material can be protected by a casing in accordance with the invention. Instead ofthe hose 1, any electrical or optical cable can be provided with a protective casing which makes it possible to bring the cable safely through a fire without it being damaged or maintenance of operation being jeopardized.
It is obvious that the maintenance of operation and the protection of the cable can also be influenced by a particular construction of the cable, independent of the protective casing in accordance with the invention,forexample, by replacing ordinary insulating materials by insulating materials which areflame-resistant or resistant to the effects of increased temperatures.
The terms "high temperature resistant", "heat-resistant" and "fire-resistant" or "fire-proof" as used herein have their usual meaning in the art, that is that the materials so qualified do not deteriorate to any substantial degree when subjected to temperatures which are substantially above ambient temperature, and, in particular, are such as are likely to be encountered during afire.
Similarly, the term "flame-proof" has it usual meaning that a material so designated does not deteriorate appreciably when directly subjected to a flame.

Claims (23)

1. A protective casing for rope-shaped materials againstthe external action of heat and fire comprising an inner covering consisting at least predominantly of an inorganic material and applied directly to the rope-shaped material, a heat-distributing covering of high temperature-resistant material overlying said singleor multi-layer covering, and a further covering of heat-resistant and/or fire-resistant material surrounding said heat-distributing covering and acting as a compression sleeve.
2. A protective casing as claimed in Claim 1, comprising an inner covering consisting at least predominantly of an inorganic material, a heat-reflecting covering overlying the inner covering, a heat-distributing covering of high temperature-resistant material overlying said heat-reflecting covering, at least one covering in the form of a net made of a heat- and/orfire-resistant material overlying said heat-reflecting covering, and a non-inflammable, heat-resistant outer sheath.
3. A protection casing as claimed in Claim 1 or Claim 2, wherein said inner covering comprises a single-ormulti-layerwinding of a tape consisting at least predominantly of an inorganic material.
4. A protective casing as claimed in any one of Claims 1 to 3, wherein said inorganic material is mica.
5. A protective casing as claimed in Claim 4, wherein the mica is disposed on a substrate in the form of a tape.
6. A protective casing as claimed in Claim 5, wherein the mica coating always faces inwardly.
7. A protective casing as claimed in Claim 2, or any one of Claims 3 to 6 as dependentthereon, wherein said heat-reflecting covering is made of a metal-coated glass silk tape.
8. A protective casing as claimed in Claim 7, wherein the metal coating ofthetapefaces outwards.
9. A protective casing as claimed in Claim 7 or Claim 8, wherein the metal-coated tape is wound on.
10. A protective casing as claimed in Claim 7, wherein the heat-radiating coating is made of metal applied byvapourdeposition.
11. A protective casing as claimed in any one of the preceding Claims, wherein said heat-distributing covering consists of one or more layers of densely wrapped heat-resistant th reads, fibres, or strips.
12. A protective casing as claimed in Claim 1 1, wherein said threads, fibres or strips consist of ceramic material, or contain such a material, and are coated with metal.
13. A protective casing as claimed in any one of the preceding Claims, wherein said further covering acting as a compression sleeve is made of a glass silk material in the form of a net.
14. A protective casing as claimed in Claim 2 or any one of Claims 3 to 13 as dependentthereon, wherein said outer sheath is made of an extruded silicone rubber.
15. A protective casing as claimed in Claim 2 or any one of Claims 3 to 13 as dependentthereon, wherein said outer sheath is made of a flame-resistant, high temperature-resistant elastomer orthermoplastic material.
16. A protective casing as claimed in Claim 2 or any one of Claims 3 to 13 as dependentthereon, wherein said outer sheath is in the form of a wrapping of steel tape.
17. A protective casing as claimed in Claim 2Or any one of Claims 3 to 13 as dependentthereon, wherein said outer sheath is made of an inorganic material.
18. A method of manufacturing a protective casing as claimed in Claim 1,wherein a multi-layer wrapping of mica-coated tape ortapes is wound around said rope-shaped material, with the mica facing inwards, a metal-coated glass silk tape is then wound on said wrapping with the coating facing outwards, this tape layer is denselywrapped with metal-coated ceramicthreadsand the assembly coveredfirstwith a glass silk material in the form of a net serving as a compression sleeve and lastly with an outer protective sheath.
19. A method as claimed in Claim 18,wherein said mica-coated tapes have widths which are different from layer to layer.
20. A method as claimed in Claim 19, wherein the tapes are wound edge to edge with the tape width increasing towards the outside.
21. A protective casing for a rope-shaped material substantially as hereinbefore described with reference to and as shown in Figure 1 of the drawings.
22. A rope-shaped material provided with a protective casing as claimed in any one of Claims 1 to 17and21.
23. A rope-shaped material as claimed in Claim 22 constituted by a pipe, hose, or pipe-bundle cable, carrying a medium or media, or an electrical cable or line, for the pneumatic, hydraulic, electrical, or optical transmission of control pulses, measurements, or the like.
GB8629414A 1985-12-18 1986-12-09 Protective casing for rope-shaped material Expired - Lifetime GB2184512B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853544810 DE3544810A1 (en) 1985-12-18 1985-12-18 PROTECTIVE COVER AGAINST OUTSIDE HEAT AND FIRE FOR STRING-SHAPED GOODS

Publications (3)

Publication Number Publication Date
GB8629414D0 GB8629414D0 (en) 1987-01-21
GB2184512A true GB2184512A (en) 1987-06-24
GB2184512B GB2184512B (en) 1990-02-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB8629414A Expired - Lifetime GB2184512B (en) 1985-12-18 1986-12-09 Protective casing for rope-shaped material

Country Status (13)

Country Link
JP (1) JPS62246726A (en)
KR (1) KR870006162A (en)
BE (1) BE905955A (en)
DD (1) DD254460A5 (en)
DE (1) DE3544810A1 (en)
FI (1) FI87832C (en)
FR (1) FR2591715B1 (en)
GB (1) GB2184512B (en)
IT (1) IT1213549B (en)
NO (1) NO865124L (en)
PL (1) PL263005A1 (en)
SE (1) SE463974B (en)
SU (1) SU1658827A3 (en)

Cited By (26)

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GB2195817A (en) * 1986-09-18 1988-04-13 Kabelmetal Electro Gmbh Flame resistant electrical line
EP0284900A2 (en) * 1987-03-31 1988-10-05 AT&T Corp. Optical fiber building cables
WO1989000765A1 (en) * 1987-07-10 1989-01-26 Raychem Limited Electrical wire with mineral layer
WO1989000763A1 (en) * 1987-07-10 1989-01-26 Raychem Limited Electrical wire
WO1989000762A1 (en) * 1987-07-10 1989-01-26 Raychem Limited Electrical wire and cable
WO1989000764A1 (en) * 1987-07-10 1989-01-26 Raychem Limited Wire
EP0361312A2 (en) * 1988-09-30 1990-04-04 Asahi Glass Company Ltd. Light energy transmitting optical fiber cable
WO1990004128A1 (en) * 1988-10-14 1990-04-19 Dantec Ltd. A composite hose
EP0407266A1 (en) * 1989-07-05 1991-01-09 Hutchinson Protective lining against heat and fire for pipes and similar elements having an elongated shape
GB2247340A (en) * 1990-08-24 1992-02-26 Stc Plc Fire resistant electric or optic cable
WO1992012449A1 (en) * 1991-01-14 1992-07-23 W.L. Gore & Associates, Inc. High-strength isolated core cable
EP0883008A1 (en) * 1997-06-06 1998-12-09 Auxitrol SA Optical cable for data transmission in rough environnment
GB2327529A (en) * 1997-07-08 1999-01-27 City Electrical Factors Ltd Fire-resistant electric cable
EP1058140A1 (en) * 1999-06-05 2000-12-06 Alcatel Fire resistent electrical or optical cable
WO2001084685A1 (en) * 2000-04-27 2001-11-08 Verta Ag Thermal insulation device, in particular for elongated bodies
EP1437264A1 (en) * 2003-01-13 2004-07-14 Verta AG Protecting device for elongated objects
EP1316830A3 (en) * 2001-12-03 2004-11-24 Alcatel Dual-layer fire retardant cable structure with air gap
EP2159614A1 (en) * 2008-08-29 2010-03-03 Corning Cable Systems LLC Flame-retardant fiber optic assembly
WO2011011268A1 (en) * 2009-07-24 2011-01-27 Parker-Hannifin Corporation Fire resistant hose assembly
US8176943B2 (en) 2008-11-21 2012-05-15 Parker-Hannifin Corporation High temperature fire sleeve
CN102681115A (en) * 2012-03-09 2012-09-19 北京倚天凌云云母科技有限公司 Fire-resistant heat-insulating belt for optical fiber cable
EP2059710A4 (en) * 2006-09-05 2012-10-24 Wellstream Int Ltd Composite pipe having non-bonded internal liner, method and assembly for the production thereof
WO2014184791A1 (en) * 2013-05-13 2014-11-20 Israel Aerospace Industries Ltd. A robotic supply system
EP3051020A1 (en) * 2015-01-28 2016-08-03 Honeywell International Inc. Device with improved heat resistance
WO2020225572A1 (en) * 2019-05-09 2020-11-12 Teesside University Multilayer coating
US11465002B2 (en) 2014-09-10 2022-10-11 Dymat Construction Products, Inc. Systems and methods for fireproofing cables and other structural members

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DE29913737U1 (en) 1999-08-06 2000-02-10 Habia Cable GmbH, 40217 Düsseldorf High temperature resistant cable
EP2443032A4 (en) 2009-06-15 2014-06-11 Oubada Hawass Doing Business As Aerial X Equipment Aerial distribution system
DE102010004809A1 (en) 2010-01-15 2011-07-21 Westfalia Metallschlauchtechnik GmbH & Co. KG, 57271 Line element for use in exhaust systems of motor vehicles, and in gas turbines, district heating lines and chimney systems, has two-layer, coaxial structure that is made of inner flexible metal hose that is wound from multiple strip layers
EP2581916A1 (en) * 2011-10-14 2013-04-17 Siemens Aktiengesellschaft Ignition cable for high mechanical and/or thermal loads
US9188257B2 (en) * 2012-05-03 2015-11-17 Gates Corporation Flame resistant hose reinforced with fiberglass cord fabric
HUE060679T2 (en) * 2017-09-25 2023-04-28 Zhejiang Helen Plastic Co Ltd Wear-resistant multi-layer retractable water pipe
CN107682945B (en) * 2017-10-31 2024-07-02 山东华宁电伴热科技有限公司 High-voltage-resistant skin effect heating cable
CN109003736A (en) * 2018-08-30 2018-12-14 安徽华上电缆科技有限公司 A kind of dedicated double flame retardant type power cables of fire-fighting
CN111048262B (en) * 2019-12-17 2021-07-09 东莞市骏豪电线科技有限公司 Manufacturing method of high-temperature-resistant fireproof electric wire and electric wire
RU2725720C1 (en) * 2020-03-06 2020-07-03 Василий Алексеевич Прусаков Fire-resistant multilayer article for fire protection of building structures

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EP2159614A1 (en) * 2008-08-29 2010-03-03 Corning Cable Systems LLC Flame-retardant fiber optic assembly
US8176943B2 (en) 2008-11-21 2012-05-15 Parker-Hannifin Corporation High temperature fire sleeve
US8689838B2 (en) 2008-11-21 2014-04-08 Parker-Hannifin Corporation High temperature fire sleeve
WO2011011268A1 (en) * 2009-07-24 2011-01-27 Parker-Hannifin Corporation Fire resistant hose assembly
US8955552B2 (en) 2009-07-24 2015-02-17 Parker-Hannifin Corporation Fire resistant hose assembly
CN102681115B (en) * 2012-03-09 2014-06-18 北京倚天凌云云母科技有限公司 Fire-resistant heat-insulating belt for optical fiber cable
CN102681115A (en) * 2012-03-09 2012-09-19 北京倚天凌云云母科技有限公司 Fire-resistant heat-insulating belt for optical fiber cable
WO2014184791A1 (en) * 2013-05-13 2014-11-20 Israel Aerospace Industries Ltd. A robotic supply system
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FI864690A (en) 1987-06-19
IT1213549B (en) 1989-12-20
SE8605411L (en) 1987-06-19
SE463974B (en) 1991-02-18
SU1658827A3 (en) 1991-06-23
NO865124D0 (en) 1986-12-17
FI87832C (en) 1993-02-25
GB8629414D0 (en) 1987-01-21
DD254460A5 (en) 1988-02-24
GB2184512B (en) 1990-02-07
JPS62246726A (en) 1987-10-27
FR2591715A1 (en) 1987-06-19
BE905955A (en) 1987-04-16
FR2591715B1 (en) 1989-04-28
FI864690A0 (en) 1986-11-18
FI87832B (en) 1992-11-13
KR870006162A (en) 1987-07-09
PL263005A1 (en) 1987-10-19
DE3544810A1 (en) 1987-06-19
SE8605411D0 (en) 1986-12-17
IT8622568A0 (en) 1986-12-04
NO865124L (en) 1987-06-19

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