EP1676071A1 - Procede et appareil permettant de produire un tuyau flexible durci par rf et tuyau flexible ainsi produit - Google Patents

Procede et appareil permettant de produire un tuyau flexible durci par rf et tuyau flexible ainsi produit

Info

Publication number
EP1676071A1
EP1676071A1 EP04786632A EP04786632A EP1676071A1 EP 1676071 A1 EP1676071 A1 EP 1676071A1 EP 04786632 A EP04786632 A EP 04786632A EP 04786632 A EP04786632 A EP 04786632A EP 1676071 A1 EP1676071 A1 EP 1676071A1
Authority
EP
European Patent Office
Prior art keywords
hose
liner
oven
feeder
jacket
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Withdrawn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
EP04786632A
Other languages
German (de)
English (en)
Other versions
EP1676071A4 (fr
Inventor
James Kendall
Sylvain Chenard
David L Lord
Eric St.Laurent
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.)
Hydro Quebec Laboratoire Des Technologies De L'ene
NIEDER Inc
Original Assignee
HYDRO QUEBEC LABORATOIRE DES T
Hydro-Quebec-Laboratoire des Technologies de l'Energie
Ansul Canada 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
Priority claimed from CA002443194A external-priority patent/CA2443194A1/fr
Priority claimed from US10/670,266 external-priority patent/US7213630B2/en
Application filed by HYDRO QUEBEC LABORATOIRE DES T, Hydro-Quebec-Laboratoire des Technologies de l'Energie, Ansul Canada Ltd filed Critical HYDRO QUEBEC LABORATOIRE DES T
Publication of EP1676071A1 publication Critical patent/EP1676071A1/fr
Publication of EP1676071A4 publication Critical patent/EP1676071A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0272—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using lost heating elements, i.e. heating means incorporated and remaining in the formed article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0861—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using radio frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/20—Straightening or flattening of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/82—Cores or mandrels
    • B29C53/821—Mandrels especially adapted for winding and joining
    • B29C53/824—Mandrels especially adapted for winding and joining collapsible, e.g. elastic or inflatable; with removable parts, e.g. for regular shaped, straight tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/24—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B29K2105/0845—Woven fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

Definitions

  • the present invention relates to a method and apparatus for producing an RF cured hose, and is also directed to the hose itself.
  • Hoses are known in the art and exist for a variety of different purposes.
  • hoses are constructed of a jacket, made of woven or non-woven material, and a liner inserted inside the jacket and bonded thereto.
  • the polyester liner is exposed to a considerable amount of heat during the curing process. This creates a large number of pinholes in the resulting hose, which decreases its efficiency, and alters the properties of the polyester, reducing the lifetime of the hose.
  • the conventional steam method prevents the production of hoses in continuous lengths. There is thus a need for a process and apparatus for making a hose which reduces the occurrence of pinholes, and permits the production of the hose in continuous lengths.
  • an apparatus for making a hose comprising: a weaving machine and a liner feeder for forming said hose by weaving a jacket about said liner as said liner is being fed into said weaving machine, said liner being provided with an adhesive layer on an outer surface, said adhesive layer being doped with a radiation absorbing element; a feeder for receiving and for flattening said hose; an oven located downstream from said feeder, including a bore through which said hose passes, said oven including means for applying radiation to said hose so that said radiation absorbing element heats following the application of radiation for bonding said liner to said jacket; a winder, located downstream a predetermined distance away from said oven for pulling and winding said hose, said winder being further provided with pressure means for internally pressurizing a portion of said hose located between said winder and said feeder, whereby when said hose is in said
  • this object is achieved with a method for curing a hose comprising: (a) providing a woven jacket; (b) inserting a liner provided with an adhesive layer on an outer surface thereof into said jacket to form a hose, said adhesive layer being doped with a radiation absorbing element;
  • this object is achieved with a hose comprising a woven jacket, a liner and an adhesive layer located between said jacket and said liner, said adhesive layer being doped with a radiation absorbing element.
  • Figure 1 is a schematic top view of an apparatus for making a hose according to a preferred embodiment of the invention
  • Figure 2 is a perspective view of an applicator plate module according to a preferred embodiment of the invention
  • Figure 3 is a cross-sectional view of a hose according to a preferred embodiment of the invention.
  • the apparatus 10 includes a weaving machine 11 for weaving an outer jacket 101 on a liner 103.
  • the liner is provided with an adhesive layer 105 on its outer surface, the adhesive layer being doped with a radiation absorbing element, the purpose of which will be explained hereinafter.
  • the woven hose is then passed through a feeder 13 including at least one pair of rolls 15 which pinch and flatten the hose and prevent air from passing beyond the feeder back into the weaving machine 11.
  • the hose is then passed through an oven 17 and then threaded onto a winder 19.
  • the winder is equipped with means for pressurizing the inside of the hose, preferably a rotary air joint, such as those that are commercially available.
  • the purpose of these means is to continually pressurize the hose between the winder 19 and the feeder 13 and thus force the liner against the jacket.
  • the feeder controls the rate at which the apparatus runs, and the winder essentially takes up the slack under a predetermined tension.
  • the oven is started.
  • the oven includes at least one applicator plate module 21, such as the one illustrated in Fig. 2. In a preferred embodiment of the invention, four such applicator plate modules are positioned within the oven. It will be appreciated that although the total length of the oven 17 remains constant for different hose diameters, the modules 21 can be configured according to the diameter.
  • the total length of the oven 17 is approximately 234 inches, and each module has a length of approximately 41.5 inches.
  • the applicator plate module 21 includes an elongated frame 23 having two opposite ends 25 and a bore 27 coincident with said bore of said oven.
  • a plurality of longitudinally spaced apart plates 29 lie in a plane perpendicular to an axis of the bore 27.
  • the plates have applied thereto an alternating voltage at a predetermined frequency.
  • the voltages range from 0-4/5 kV, and the frequency is in the range of 1-14 MHz. It will be readily understood that the speed of the hose curing varies by hose diameter and the materials involved.
  • a 15 inch hose will cure at about 16 ft/min, whereas a 6-inch hose will cure at about 10 ft/min.
  • the oven of the present invention acts in a way similar to a microwave oven, by heating only the radiation absorbing element which bonds the liner to the jacket, and not the whole hose, as in the prior art.
  • the adhesive layer is formed by co-extending a layer of adhesive grade resin that is compatible with the base tube resin. This could be any resin that provides adequate adhesion and can be simultaneously extended with the base tube.
  • an ultrasonic leak detector 53 located between the oven and the winder, detects leaks in the hose.
  • the leak detector 53 is composed of existing ultrasonic sensors, placed in a closed cell foam box through which the hose passes.
  • the hose can be marked by a defect marker 55 operatively associated with the detector 53 at the leak to remove it in subsequent processing. This is advantageous since it avoids a hydrostatic testing step further down the manufacturing process.
  • the system is preferably controlled by a computer which monitors, displays and controls all of the system parameters. Once the parameters have been defined for a given hose, they only need to be called up and the system will automatically run under the appropriate conditions.
  • the weaving of the hose is done in lengths of 1000 feet or more, depending on the diameter of hose being produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Cette invention concerne un appareil permettant de fabriquer un tuyau flexible et comprenant une machine à tisser et un distributeur de revêtement intérieur permettant de former un tuyau flexible par tissage d'une gaine autour d'un revêtement intérieur tandis que celui-ci est introduit dans la machine à tisser. Le revêtement intérieur comprend une couche adhésive appliquée sur une surface extérieure, laquelle couche adhésive est dopée à l'aide d'un élément absorbant les rayonnements. Cet appareil comprend un distributeur chargé de recevoir et d'aplatir le tuyau flexible et un four placé en aval du distributeur et comprenant un alésage à travers lequel passe le tuyau flexible, lequel four comprend un module servant à appliquer un rayonnement sur le tuyau flexible de façon que l'élément absorbant les rayonnements chauffe à la suite de l'application du rayonnement afin que le revêtement intérieur soit collé à la gaine. Un enrouleur est placé en aval à une distance prédéterminée du four afin de tirer et d'enrouler le tuyau flexible et comprend un pressuriseur chargé de pressuriser l'intérieur d'une partie du tuyau flexible située entre l'enrouleur et le distributeur de façon que lorsque le tuyau flexible se trouve dans le four, le pressuriseur pousse le revêtement intérieur contre la gaine. Une unité de commande est utilisée pour commander les différents éléments de l'appareil. Cette invention concerne également un procédé de durcissement d'un tuyau flexible ainsi que le tuyau flexible ainsi produit.
EP04786632A 2003-09-26 2004-09-20 Procede et appareil permettant de produire un tuyau flexible durci par rf et tuyau flexible ainsi produit Withdrawn EP1676071A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA002443194A CA2443194A1 (fr) 2003-09-26 2003-09-26 Methode et dispositif de fabrication d'un tuyau souple durci par rf et tuyau souple ainsi fabrique
US10/670,266 US7213630B2 (en) 2003-09-26 2003-09-26 Method and apparatus for producing an RF cured hose, and the hose so produced
PCT/CA2004/001711 WO2005031206A1 (fr) 2003-09-26 2004-09-20 Procede et appareil permettant de produire un tuyau flexible durci par rf et tuyau flexible ainsi produit

Publications (2)

Publication Number Publication Date
EP1676071A1 true EP1676071A1 (fr) 2006-07-05
EP1676071A4 EP1676071A4 (fr) 2011-05-04

Family

ID=34394975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786632A Withdrawn EP1676071A4 (fr) 2003-09-26 2004-09-20 Procede et appareil permettant de produire un tuyau flexible durci par rf et tuyau flexible ainsi produit

Country Status (2)

Country Link
EP (1) EP1676071A4 (fr)
WO (1) WO2005031206A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9933327B2 (en) 2015-08-20 2018-04-03 General Electric Company Method for detecting leaks in a fuel circuit of a gas turbine fuel supply system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988188A (en) * 1973-01-31 1976-10-26 Samuel Moore And Company Dimensionally stable, flexible hydraulic hose having improved chemical and temperature resistance
DE2904934A1 (de) * 1979-02-09 1980-08-21 Holzapfel Geb Joncker Anita Verfahren zur herstellung von textilen schlaeuchen mit geschweisster elastischer einlage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1140845A (fr) * 1980-10-23 1983-02-08 Peter J. Nixon Tuyau souple
US4495970A (en) * 1983-04-18 1985-01-29 Thyssen-Bornemisza Inc. Large diameter plastic pipe
EP0157956A1 (fr) * 1984-03-26 1985-10-16 MATHER & PLATT LIMITED Procédé de fabrication de tuyaux revêtus de caoutchouc
JPH09506974A (ja) * 1994-03-15 1997-07-08 エナジー アンド エンヴァイロメンタル テクノロジーズ コーポレイション 選択した距離から伝搬された超音波を探知する装置およびその方法
CA2323774A1 (fr) * 1998-03-17 1999-09-23 Ameritherm, Inc. Compositions a activation rf utilisees dans l'adhesion, la liaison et le revetement
US6596122B1 (en) * 1998-07-10 2003-07-22 Edison Welding Institute, Inc. Simultaneous butt and lap joints

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988188A (en) * 1973-01-31 1976-10-26 Samuel Moore And Company Dimensionally stable, flexible hydraulic hose having improved chemical and temperature resistance
DE2904934A1 (de) * 1979-02-09 1980-08-21 Holzapfel Geb Joncker Anita Verfahren zur herstellung von textilen schlaeuchen mit geschweisster elastischer einlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005031206A1 *

Also Published As

Publication number Publication date
EP1676071A4 (fr) 2011-05-04
WO2005031206A1 (fr) 2005-04-07

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