USRE37775E1 - Hose assembly - Google Patents
Hose assembly Download PDFInfo
- Publication number
- USRE37775E1 USRE37775E1 US09/329,634 US32963499A USRE37775E US RE37775 E1 USRE37775 E1 US RE37775E1 US 32963499 A US32963499 A US 32963499A US RE37775 E USRE37775 E US RE37775E
- Authority
- US
- United States
- Prior art keywords
- assembly
- liner
- set forth
- further characterized
- inner liner
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims abstract description 53
- 239000000446 fuel Substances 0.000 claims abstract description 33
- 239000004952 Polyamide Substances 0.000 claims abstract description 31
- 229920002647 polyamide Polymers 0.000 claims abstract description 31
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 11
- 230000015556 catabolic process Effects 0.000 claims abstract description 6
- 238000006731 degradation reaction Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 230000001788 irregular Effects 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920002292 Nylon 6 Polymers 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 6
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 claims description 5
- 229920000571 Nylon 11 Polymers 0.000 claims description 5
- 229920000299 Nylon 12 Polymers 0.000 claims description 5
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 4
- 239000002816 fuel additive Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229920001774 Perfluoroether Polymers 0.000 claims description 2
- 238000010306 acid treatment Methods 0.000 claims description 2
- 238000009832 plasma treatment Methods 0.000 claims description 2
- 238000003486 chemical etching Methods 0.000 claims 1
- 238000003851 corona treatment Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 12
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 7
- 238000005530 etching Methods 0.000 description 5
- 239000004604 Blowing Agent Substances 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920002313 fluoropolymer Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 2
- QHSJIZLJUFMIFP-UHFFFAOYSA-N ethene;1,1,2,2-tetrafluoroethene Chemical compound C=C.FC(F)=C(F)F QHSJIZLJUFMIFP-UHFFFAOYSA-N 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920001007 Nylon 4 Polymers 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920006355 Tefzel Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
-
- 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
- F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
-
- 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
- F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not 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
- F16L11/127—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 electrically conducting
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2327/00—Polyvinylhalogenides
- B32B2327/12—Polyvinylhalogenides containing fluorine
- B32B2327/18—PTFE, i.e. polytetrafluoroethylene
-
- 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
-
- 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
- F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer
Definitions
- the subject invention relates to a hose construction. More specifically, the subject invention relates to a hose assembly comprising a polymeric fluorocarbon inner liner having an expanded polyamide outer liner disposed thereabout.
- Hose assemblies for conveying fuels are well-known in the art. Such assemblies are exposed to a variety of fuel mixtures and fuel additives in addition to extreme engine temperatures. Thus, such hose assemblies must be chemically as well as heat resistant to degradation as a result of chemical and heat exposure.
- Polymeric fluorocarbon materials such as polytetrafluoroethylene possess the requisite chemical and temperature resistant properties for most fuel hose applications.
- polymeric fluorocarbon materials exhibit relatively poor tensile and hoop strengths.
- fluorinated materials are prone to kinking.
- Such kinking remains permanent and provides a continual resistance to fluid flow through the hose assembly.
- attachment of securing or coupling members to the hose assembly is unreliable.
- U.S. Pat. No. 3,547,162 to Schaerer discloses a pipe assembly wherein an inner cross-linked polyolefin liner is supported within an expanded urethane or PVC outer liner.
- a hose assembly comprising a tubular inner liner and an outer liner disposed about the inner liner.
- the inner liner comprises a polymeric fluorocarbon material resistant to chemical and heat degradation.
- the hose assembly is characterized by the outer liner, comprising an expanded polyamide material for increasing the strength of the hose assembly.
- the present invention provides a hose assembly including an inner liner having chemical and heat resistant properties and an expanded polyamide outer liner providing support and strength to the inner liner thereby increasing the hose assembly's hoop and tensile strength.
- the present hose assembly is resistant to kinking and possess sufficient strength for allowing the attachment of securing or coupling members thereto.
- An advantage of the present hose assembly's outer liner comprising an expanded polyamide material is a substantial reduction in the weight of the hose assembly while maintaining the necessary hose strength.
- the present hose assembly's expanded polyamide outer liner not only provides strength to the hose assembly but also provides ample protection from external heat and chemical degradation at a substantially reduced weight.
- FIG. 1 is a perspective view partially broken away and in cross-section of an alternate embodiment of the subject invention
- FIG. 2 is a perspective view partially broken away and in cross-section of the preferred embodiment of the subject invention.
- FIG. 3 is a schematic view, of a fuel system showing three separate applications of the subject invention.
- a hose assembly made in accordance with the present invention is generally shown at 10 in FIGS. 1 and 2.
- the assembly 10 includes a tubular inner liner 12, an outer liner 14 disposed about the inner liner 12, an integral conductive means 16 coextensive with the length of the inner liner 12, and a coupling means 18 (FIG. 3) adapted to engage the ends of the hose assembly 10.
- the tubular inner liner 12 comprises a polymeric fluorocarbon material resistant to both chemical and heat degradation, thus allowing a variety of fluids, particularly automotive fuels and fuel additives, e.g., detergents, alcohols, etc., to pass through the inner liner 12 without corroding or degradating the inner liner 12.
- the inner liner 12 is preferably extruded using well-known melt or paste extrusion techniques and has a wall thickness of between 0.001 and 0.120 inches.
- the inner liner 12 may be made of any number of polymeric fluorocarbon materials, the inner liner 12 is ideally made from a polymer of the following: polytetrafluoroethylene (PTFE), the homopolymer of tetrafluoroethylene sold under the trademark TEFLON by DuPont; perfluorinated ethylene-propylene (FEP), the copolymer of tetrafluoroethylene and hexafluoropropylene sold under the trademark TEFLON FEP by DuPont; perfluoroalkoxy fluorocarbon resin (PFA), the copolymer of tetrafluoroethylene-perfluorovinyl ether sold under the trademark TEFLON PFA by DuPont; or ethylene tetrafluoroethylen (ETFE), the copolymer of ethylene and tetrafluoroethylene sold under the trademark TEFZEL by DuPont.
- PTFE polytetrafluoroethylene
- FEP per
- polychlorotrifluoroethylene the homopolymer of chlorotrifluoroethylene, and polychlorotfifluoroethylene-ethylene
- the copolymer of chlorotrifluoroethylene and ethylene may also be used.
- the outer liner 14, best shown in FIGS. 1 and 2, is disposed about the inner liner 12.
- the outer liner 14 comprises a polyamide material for increasing the strength of the hose assembly 10. More specifically, the outer liner 14 allows the inner liner 12 to be bent without kinking. That is, the outer liner 14 provides strength to the inner liner 12 upon bending. This is commonly referred to as hoop strength. Thus, by disposing the outer liner 14 about the inner liner 12, the hoop strength of the inner liner 12 is increased. Further, the outer liner 14 adds to the working pressure of the hose. That is, the outer liner 14 provides strength to the inner liner 12 and allows the inner liner 12 to accommodate a fluid under pressure.
- the outer liner 14 adds to the tensile strength of the hose assembly 10.
- the outer liner 14 increases the tensile strength of the hose assembly 10 sufficiently to fixedly connect the coupling member 18 (FIG. 3) to the hose assembly 10.
- the outer liner 14 may be made of any number of polyamide materials, preferably the outer liner 14 is made from a polyamide material selected from the following: nylon 6; nylon 6,6; nylon 11; or nylon 12. It should be noted the selection of a particular polyamide material should be based upon the physical requirements of the particular hose assembly application. For example, nylon 6 and nylon 6,6 offer higher heat resistant properties than nylon 11 or nylon 12, whereas nylon 11 and nylon 12 offer better chemical resistant properties than nylon 6 or nylon 6,6. Thus, the ultimate selection of a polyamide material should be based upon requirements of a particular hose assembly application. In addition to those polyamide materials previously mentioned, other nylon materials such as: nylon 6,12; nylon 6,9; nylon 4; nylon 4,2; nylon 4,6; nylon 7; and nylon 8 may also be used.
- Ring containing polyamides including aliphatic-aromatic polyamides e.g., nylon 6,T and nylon 6,I may also be used.
- the outer liner 14 may also comprise various polyamide blends. Again, it is noted that the selection of a particular polyamide material is dependent upon the specific physical requirements of a particular hose assembly application.
- the outer liner 14 is comprised of an expanded polyamide material, as shown in FIGS. 1 and 2.
- the outer liner 14 may comprise an unexpanded polyamide material (not shown).
- expanded and unexpanded polyamide outer liners 14 both offer the hose assembly 10 increased hoop and tensile strength, the expanded polyamide material is preferred.
- the expanded polyamide material offers the hose assembly 10 substantially the same degree of strength as the unexpanded material while significantly reducing the weight of the hose assembly 10. That is, the expanded polyamide material is significantly lighter in weight than the unexpanded polyamide material due to the presence of void spaces therein formed during the expansion process.
- the expansion process generally takes place while extruding the outer liner 14.
- foaming generally requires blowing agents such as CELOGEN HT 550TM, an exothermic blowing agent sold by Uniroyal Chemicals or EXTIVEX 537TM, an endothermic blowing agent sold by J. M. Huber Corporation.
- the blowing agent is generally intermixed with the polyamide material during the extrusion of the outer liner 14 and causes expansion of the polyamide by producing gas, thereby forming void spaces within the outer liner 14.
- Methods for fabricating the present hose assembly 10 are well-known in the art.
- One particular well-known method involves a two-part extrusion process typically known as “cross-head” extrusion.
- the typical “cross-head” extrusion method involves first extruding an inner liner, such as the polymeric fluorocarbon inner liner 12, then extruding an outer liner thereover, such as the expanded polyamide outer liner 14.
- This method of fabrication is particularly effective when utilizing an inner liner 12 comprising polytetrafluoroethylene. This is primarily due to the difficulty encountered in extruding polytetrafluoroethylene. That is, polytetrafluoroethylene generally must be paste extruded whereas thermoplastic polymeric fluorocarbon materials may often be melt extruded.
- coextrusion methods of fabricating may be applicable. As commonly known in the art, coextrusion methods involve utilizing two extruders at once thereby forming both inner and outer liners simultaneously.
- the present hose assembly 10 may be modified to eliminate such relative movement between the inner 12 and outer 14 liners.
- One embodiment for eliminating relative movement between the inner 12 and outer 14 liners involves etching an outer surface 20 of the inner liner 12 prior to disposing the outer liner 14 thereabout, as shown in FIG. 2.
- Etching techniques are well-known in the art. Examples of common etching techniques include acid treatment, plasma treatment, and mechanical scuffing.
- the outer surface 20 of the inner liner 12 maintains an irregular configuration 22 as shown in FIG. 2.
- the irregular configuration 22 comprises a rough surface having a plurality of cavities and protuberances therein.
- the outer liner 14 is extruded thereover. During this extrusion, an inner surface 24 of the outer liner 14 shapes into mating engagement with the irregular configuration 22 of the outer surface 20 of the inner liner 12 thereby resulting in a mechanical bond therebetween. This mechanical bond prohibits relative movement (rotational or longitudinal) between the inner 12 and outer 14 liners.
- FIG. 1 An alternative embodiment for eliminating relative movement between the inner 12 and outer 14 liner is shown in FIG. 1.
- the alternative embodiment includes disposing at least one braided layer between the inner 12 and outer 14 liners. More specifically, the alternative embodiment includes a braided or woven layer 26 disposed in an interleaving fashion, or wrapped tightly about the outer surface 20 of the inner liner 12.
- the material used for the braided layer 26 is a glass fiber. Glass fibers are preferred due to their relative low cost and superior heat resistant properties.
- the braided or woven fibers may be tightly wound or they may be loosely wound about the inner liner 12, having wide gaps between adjacent fibers.
- the assembly 10 further includes intermediate coating 28 dispersed in the braided layer 26.
- the intermediate coating 28 ideally comprises a fluorocarbon polymer in a dispersion.
- the intermediate coating 28 as applied, comprises a fluorocarbon polymer and at least one dispersing agent.
- the dispersion agent is water. It will be appreciated that any suitable dispersion agent may be used.
- the preferred fluorocarbon polymer is a material selected from the following: the polymer of tetrafluoroethylene (PTFE); the copolymer of tetrafluoroethylene and hexafluoroproplene (FEP); the copolymer of tetrafluoroethylene-perfluorovinyl ether (PFA); or the copolymer of ethylene and tetrafluoroethylene (PETFE).
- PTFE polymer of tetrafluoroethylene
- FEP copolymer of tetrafluoroethylene and hexafluoroproplene
- PFA tetrafluoroethylene-perfluorovinyl ether
- PETFE ethylene and tetrafluoroethylene
- the intermediate coating 28 essentially comprising only the fluorocarbon material, dispersed throughout the braided layer and secured or bonded to the outer surface 20 of the inner liner 12.
- An outer surface 29 of the intermediate coating 28 maintains an irregular configuration 31 including a rough surface.
- the outer liner 14 is extruded thereover.
- the inner surface 24 of the outer liner 14 shapes into mating engagement with the irregular configuration 31 of the intermediate coating 28 thereby resulting in the mechanical bond therebetween. This mechanical bond prohibits relative movement (rotational or longitudinal) between the braided layer 26/intermediate coating 28 and outer liner 14.
- the inner liner 12 preferably includes an integral longitudinal conductive means 16 coextensive with the length of the inner liner 12 for conducting an electrical charge along the length of the inner liner 12.
- the integral conductive means 16 comprises a conductive strip 30 of carbon black, as shown in FIG. 1.
- the integral conductive means 16 may comprise an inner layer 32 of carbon black positioned adjacent an inner surface 33 of the inner liner 12 as shown in FIG. 2.
- the integral conductive means 16 may be interdispersed throughout the inner liner 12 by intermixing carbon black throughout the polymeric fluorocarbon material while the inner liner 12 is extruded (not shown).
- the braided layer 26, intermediate coating 28, and outer liner 14 are all preferably electrically non-conductive. This is important in that electrical charges applied to the exterior of the hose assembly 10 will not be conducted along its length nor to the fluid passing therethrough. It will be appreciated that the integral conductive means may comprise conductive material other than carbon black.
- the assembly 10 further includes coupling means 18 as shown in FIG. 3.
- the coupling means 18 is adapted to engage the ends of the hose assembly 10 for interconnecting the hose assembly 10 to a flow of fluid, e.g., fuel flow to and from a fuel tank 35.
- the coupling means 18 includes a coupler 18 or joint having an insert portion 34 for inserting into and engaging the inner surface 33 (FIGS. 1 and 2) of the inner liner 12.
- the insert portion 34 may have a plurality of barbs 36 for engaging the inner surface 33 (FIGS. 1 and 2) of the inner liner 12, as best viewed in FIG. 3.
- the coupling means 18 may also include an engaging portion (not shown) extending longitudinally from the insert portion 34 for engaging a fitting (not shown).
- the engaging portion may comprise a male threaded member or female threaded member (not shown).
- the engaging portion may comprise any configuration that will cooperate with the member to which it is to be connected with.
- the engaging portion may comprise a socket to receive a mating ball joint (not shown).
- the coupling means 18 may provide an additional insert portion 34 for inserting into and engaging the interior surface of the inner liner 12 of another hose assembly 10 as shown in FIG. 3.
- the coupling means 18 may operate as a joint between independent hose assemblies 10 thereby interconnecting them to allow fluid flow therebetween.
- the coupling means 18 is preferably made from an organic polymeric material and mechanically connected to the hose assembly 10, as shown in FIG. 3.
- the coupling means 18 may be molded to the hose assembly (not shown).
- FIG. 3 discloses an engine 37, fuel tank 33, and three distinct uses of the present hose assembly 10.
- a fuel line for conveying fuel between a fuel rail 40 and the fuel tank 35 is shown at 38.
- the fuel rail 40 provides a flow of fuel to a plurality of fuel jumpers 42.
- a gas manifold and throttle body may be substituted for the fuel tail 443.
- the fuel jumpers 42 are interconnected to the fuel rail 40 by way of the coupling means 18, as shown in FIG. 3 or alternatively, may be molded directly to the fuel rail 40 (not shown).
- Fuel injectors for injecting fuel into individual fuel cylinders are shown in phantom at 44.
- the fuel injectors 44 may include male supports 46 for inserting and engaging the inner surface of the fuel jumper 42, in a similar manner as the insert portion 34 of the coupling mean 18 engages the inner surface 33 of the inner liner 12 (previously described).
- each hose assembly 10 includes a polymeric fluorocarbon inner liner 12 and an expanded polyamide outer liner 14. Due to possible variances in diameter among each hose assembly 10, i.e., fuel line 38, fuel rail 40, and fuel jumper 42, it will be understood that the insert portions 34 of the coupling means 18 used to interconnect each hose assembly 10 must vary correspondingly to accommodate each specific hose assembly 10 diameter.
- the present hose assembly has been described for conveying fuels, it will be readily appreciated that the present hose assembly 10 may be used for conveying a variety of fluids, e.g., cooling fluids, lubricating fluids, etc.
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- Laminated Bodies (AREA)
Abstract
Description
Claims (28)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/329,634 USRE37775E1 (en) | 1991-09-25 | 1999-06-10 | Hose assembly |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/765,438 US5170011A (en) | 1991-09-25 | 1991-09-25 | Hose assembly |
US08/351,721 USRE35527E (en) | 1991-09-25 | 1994-12-08 | Hose assembly |
US09/329,634 USRE37775E1 (en) | 1991-09-25 | 1999-06-10 | Hose assembly |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/765,438 Reissue US5170011A (en) | 1991-09-25 | 1991-09-25 | Hose assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE37775E1 true USRE37775E1 (en) | 2002-07-02 |
Family
ID=25073558
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/765,438 Ceased US5170011A (en) | 1991-09-25 | 1991-09-25 | Hose assembly |
US08/351,721 Expired - Lifetime USRE35527E (en) | 1991-09-25 | 1994-12-08 | Hose assembly |
US09/329,634 Expired - Lifetime USRE37775E1 (en) | 1991-09-25 | 1999-06-10 | Hose assembly |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/765,438 Ceased US5170011A (en) | 1991-09-25 | 1991-09-25 | Hose assembly |
US08/351,721 Expired - Lifetime USRE35527E (en) | 1991-09-25 | 1994-12-08 | Hose assembly |
Country Status (6)
Country | Link |
---|---|
US (3) | US5170011A (en) |
EP (1) | EP0534588B1 (en) |
JP (1) | JP2733172B2 (en) |
CA (1) | CA2072225C (en) |
DE (1) | DE69221570T2 (en) |
ES (1) | ES2104834T3 (en) |
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- 1992-06-17 DE DE69221570T patent/DE69221570T2/en not_active Expired - Fee Related
- 1992-06-17 EP EP92305564A patent/EP0534588B1/en not_active Expired - Lifetime
- 1992-06-17 ES ES92305564T patent/ES2104834T3/en not_active Expired - Lifetime
- 1992-06-24 CA CA002072225A patent/CA2072225C/en not_active Expired - Fee Related
- 1992-09-25 JP JP4256680A patent/JP2733172B2/en not_active Expired - Lifetime
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1994
- 1994-12-08 US US08/351,721 patent/USRE35527E/en not_active Expired - Lifetime
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050183786A1 (en) * | 2000-08-09 | 2005-08-25 | Martucci Norman S. | Corrugated hose assembly |
US20050098223A1 (en) * | 2002-08-28 | 2005-05-12 | Herbert Martin | Tube for the electrostatic coating of workpieces |
US6986366B2 (en) * | 2002-08-28 | 2006-01-17 | Dürr Systems, Inc. | Tube for the electrostatic coating of workpieces |
US20040201217A1 (en) * | 2003-04-10 | 2004-10-14 | Mobley John E. | Conductive tubular insert for a fuel transport system, and method |
US6880862B2 (en) * | 2003-04-10 | 2005-04-19 | Dayco Products, Llc | Conductive tubular insert for a fuel transport system, and method |
US20080029178A1 (en) * | 2006-08-01 | 2008-02-07 | Teleflex Fluid Systems, Inc. | Insulated hose assembly and method of manufacture |
US7588057B2 (en) | 2006-08-01 | 2009-09-15 | Teleflex Fluid Systems, Inc. | Insulated hose assembly and method of manufacture |
US20080087350A1 (en) * | 2006-10-12 | 2008-04-17 | Tokai Rubber Industries, Ltd. | Refrigerant-transporting hose |
EP2154402A3 (en) * | 2008-08-11 | 2011-05-11 | LeadX Aktiengesellschaft | Multi-layer hose product and method for producing same |
Also Published As
Publication number | Publication date |
---|---|
US5170011A (en) | 1992-12-08 |
CA2072225C (en) | 1995-08-01 |
EP0534588A3 (en) | 1994-06-29 |
EP0534588A2 (en) | 1993-03-31 |
USRE35527E (en) | 1997-06-10 |
JPH05196177A (en) | 1993-08-06 |
JP2733172B2 (en) | 1998-03-30 |
ES2104834T3 (en) | 1997-10-16 |
EP0534588B1 (en) | 1997-08-13 |
DE69221570D1 (en) | 1997-09-18 |
DE69221570T2 (en) | 1998-03-26 |
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