US20050008353A1 - Heated hose for carrying molten thermoplastic material - Google Patents
Heated hose for carrying molten thermoplastic material Download PDFInfo
- Publication number
- US20050008353A1 US20050008353A1 US10/874,711 US87471104A US2005008353A1 US 20050008353 A1 US20050008353 A1 US 20050008353A1 US 87471104 A US87471104 A US 87471104A US 2005008353 A1 US2005008353 A1 US 2005008353A1
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- United States
- Prior art keywords
- hose
- dispensing device
- liquid dispensing
- opening
- cuff
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
A hose for transferring heated liquid, such as molten thermoplastic material. The hose includes a conduit that has an inlet end adapted to couple with a source of heated liquid, such as a heated supply tank, and a discharge end adapted to couple with a liquid dispensing apparatus, such as an applicator gun. In one embodiment, the hose may be covered by a woven outer sheath of polyamide that protects the underlying hose against abrasion damage. In another embodiment, the hose may include a hose cuff mechanically coupled with the liquid dispensing apparatus to bolster resistance to axial tensile forces and bending forces applied to the hose.
Description
- This application claims the benefit of U.S. Provisional Application No. 60/485,456 filed on Jul. 8, 2003, and the disclosure of which is hereby incorporated by reference herein.
- This invention relates to heated hoses and, in particular, to heated hoses for carrying molten thermoplastic material.
- Various manufacturing processes involve the transfer of a pressurized heated liquid from a source, such as a melter tank, through heated lengths of flexible heated hose to a liquid dispensing device, such as an applicator gun or a dispenser. The liquid dispensing device dispenses heated liquid onto a target surface in the form of a continuous bead or ribbon or as intermittent beads, droplets or deposits. Among the heated liquids frequently dispensed in this manner are thermoplastic materials, such as hot melt adhesives, that may be liquid or solid at room temperature. Such thermoplastic materials are commonly pumped through a heated hose to a liquid dispensing device, such as an applicator gun. Generally, conventional heated hoses include a central conduit for conveying the heated thermoplastic material from the source to the liquid dispensing device and multiple plies of thermal and electrical insulation, heaters, and electrical wiring surrounding the central conduit.
- Many manufacturing processes utilize production line techniques in which the liquid dispensing device must be moved by an operator about an assembly line during application of the heated liquid to the target surface. As would be expected, the required length of hose between the source and the liquid dispensing device varies from one manufacturing process to another. In. many production line settings, the length of the heated hoses exceeds 10 feet. As the operator moves about the assembly line, the lengthy hose contacts surrounding objects, such as the article or workpiece receiving the dispensed heated liquid.
- Conventional heated hoses are typically covered by an outer protective covering or sheath formed from a braided polyester monofilament. In assembly line environments, these hoses may fail due to tears in the sheath resulting from chaffing, abrasion or wear resulting from intermittent contact with objects in the work environment. In rough duty assembly lines, rapid failure of the protective sheath may necessitate frequent hose replacements, which are expensive and temporarily halt the manufacturing process. One conventional solution is to design the protective sheath from a rigid corrugated plastic, such as nylon. However, the corrugations may rub and scrape against the workpiece receiving the heated liquid, which damages the workpiece.
- The terminal ends of conventional hoses terminate in hose fittings that facilitate fluid couplings with the heated liquid source and with the liquid dispensing device. A rigid hose cuff applied in association with the hose fitting creates a rigid interface over the region of contact between the liquid dispensing device and the hose. As the hose flexes and bends with movement about the assembly line, the hose cuffs serve to reduce hose damage by limiting flexing at the point where the hose couples to the hose fitting of the liquid dispensing device.
- Nonetheless, the weakest point of the flexible hose, which represents the point most susceptible to breakage of insulation or electrical wires, is at this interface between the hose cuff and the hose. Traditional hose cuffs are not directly attached to the housing of the liquid dispensing device. Instead, the hose cuff is only indirectly coupled with the liquid dispensing device by the hose fitting. As a result, abrupt tensile forces applied to the hose, such as when the hose is snagged by an obstruction in the assembly line environment, and persistent tensile forces incidental to movement about the assembly line are transmitted directly to the hose cuff and the hose fitting. The tensile forces may cause the outer protective sheath of the hose to retract and pull back from underneath the hose cuff and fret, unravel, and/or fray. Damage to the outer protective sheath may expose and/or place unexpected stresses and strains on the underlying electrical wires and potentially precipitate secondary failures, such as wire breakage and electrical shorts.
- In view of the deficiencies in conventional heated flexible hoses discussed above, it would be desirable to provide a heated flexible hose for coupling a source of thermoplastic material with a liquid dispensing device in which the hose has an increased durability.
- In one embodiment of the invention, an apparatus for transferring a heated liquid includes a conduit having an inlet end adapted to be coupled in fluid communication with a heated liquid source and a discharge end adapted to be coupled in fluid communication with a liquid dispensing device. Extending between the inlet end and the discharge end of the conduit are a thermal insulation layer and a heating element positioned between the thermal insulation layer and the conduit. The heating element is adapted to generate and transfer heat to the conduit. The apparatus further includes a woven outer covering extending between the inlet end and the discharge end of the hose and having a surrounding relationship with the thermal insulation layer. The woven outer covering is constructed from a plurality of braided polyamide monofilaments.
- The polyamide woven outer covering of the invention prevents damage to the underlying flexible hose, yet presents a smooth surface that does not damage objects in the assembly line environment, including the workpiece receiving the heated liquid. The polyamide woven outer covering also has an improved durability as compared with conventional sleeves. However, the flexibility of the polyamide woven outer covering does not hinder movement of the liquid dispensing device about the assembly line during application of heated liquid to the intended target surface.
- In another embodiment of the invention, an apparatus comprises a heated hose having an inlet end adapted to couple in fluid communication with a heated liquid source and a discharge end adapted to couple in fluid communication with a liquid dispensing device. Extending between the inlet end and the discharge end of the conduit are a thermal insulation layer and a heating element positioned between the thermal insulation layer and the conduit. The heating element is adapted to generate and transfer heat to the conduit. Attached to the discharge end of the hose is a hose cuff with at least one coupling element directly securing the hose cuff to the liquid dispensing device. The securement of coupling element with the liquid dispensing device prevents relative axial movement between the hose cuff and the liquid dispensing device.
- In accordance with another embodiment of the invention, a method of attaching a heated hose to a liquid dispensing device includes coupling a fitting at a discharge end of the hose with the liquid dispensing device and directly coupling a hose cuff at the discharge end of the hose with a portion of the liquid dispensing device. The direct coupling prevents relative axial movement between the hose cuff and the liquid dispensing device during use.
- A hose cuff constructed in accordance with the principles of the invention provides a more robust connection between the flexible hose and the liquid dispensing device. The hose cuff of the invention prevents, or at least reduces the incidence of, premature failure of the outer protective sheath of the flexible hose proximate to the hose cuff by reducing the effect of tensile forces and bending forces applied to the flexible hose and, in particular, to the hose's protective outer sheath during use in an assembly line environment. As a result, the insulation or electrical wires at the interface between the hose cuff and the hose are less likely to break or short.
- A hose constructed in accordance with the principles of the invention may replace a pre-existing conventional hose. It follows that the hose of the invention may be retrofitted in existing assembly line manufacturing processes for coupling a heated liquid source, such as a melter tank, and a liquid dispensing device, such an applicator gun or a dispenser.
- Various objects and advantages of the invention shall be made apparent from the accompanying drawings of the illustrative embodiments and the descriptions thereof.
- The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the invention.
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FIG. 1 is a perspective view of the hose of the present invention connecting a supply tank to an applicator gun; -
FIG. 2 is an enlarged partial cross-sectional plan view of the hose ofFIG. 1 ; -
FIG. 3 is an exploded perspective view of the tubular body and collar portion of the hose cuff ofFIGS. 1 and 2 ; -
FIG. 4 is an end view of the collar portion of the hose cuff; and -
FIG. 5 is a cross-sectional view of an alternative embodiment of a hose cuff in accordance with the principles of the invention. - With reference to
FIG. 1 and in accordance with the principles of the present invention, an adhesive dispensing apparatus 10 includes ahose 12 that connects apump 14 of asupply tank 16 with anapplicator gun 18.Pump 14 provides a pressurized flow of the thermoplastic material, such as a hot melt adhesive, from thesupply tank 16 viahose 12 to theapplicator gun 18, which selectively dispenses thermoplastic material onto a target surface.Hose 12 has a preselected length, is generally cylindrical in cross-section, and has a flexibility sufficient to permit bending as an operator moves theapplicator gun 18 about the assembly line environment surrounding adhesive dispensing apparatus 10. This allows the operator to freely position and orient theapplicator gun 18 for precisely dispensing thermoplastic material onto the intended target surface. Thesupply tank 16 and theapplicator gun 18 may be heated to maintain the thermoplastic material in flowable condition until dispensed. Asuitable applicator gun 18 is described in U.S. Pat. No. 4,245,759, the disclosure of which is hereby incorporated by reference herein in its entirety. - With reference to
FIGS. 1 and 2 , thehose 12 includes a central conduit ortube 22, typically of generally circular cross-section, through which thermoplastic material can flow from thesupply tank 16.Tube 22 has aninlet end 24 equipped with a threadedhydraulic fitting 25 that connects to a complementary threaded fitting (not shown) onpump 14 and adischarge end 26 equipped with a threadedhydraulic fitting 27 that connects to a complementary threaded fitting 29 carried by theapplicator gun 18. The length oftube 22, typically formed from a high temperature engineering polymer resin, such as polytetrafluoroethylene (PTFE), is covered by a wovenmetal cover 28. - Helically wrapped about the woven
metal cover 28 is a layer of electrically-insulatingtape 30, preferably fiberglass electrical tape. Aheating element 32 and a temperature-sensingdevice 34, such as a resistance temperature detector (RTD), are each helically wound about the wovenmetal cover 28 along the length of thehose 12 and are separated from the wovenmetal cover 28 bytape 30. Theheating element 32 transfers heat through thetube 22,metal cover 28, andtape layer 30 to thermoplastic material resident insidetube 22. The temperature-sensingdevice 34 detects the temperature oftube 22, which is representative of the temperature of the thermoplastic material withintube 22, and provides a signal to a controller (not shown) that regulates the power delivered toheating element 32 and/or the power delivered for heating thesupply tank 16. Of course, theheating element 32 and the temperature-sensingdevice 34 may be omitted fromhose 12 and thesupply tank 16 will not be heated for transferring certain thermoplastic materials. - Multiple electrical leads 36-40 are likewise helically wrapped along the length of the
hose 12 and separated from theheating element 32 andtemperature sensing device 34 by another helically-wound layer of electrically-insulatingtape 42. The electrical leads 36-40 are coupled with devices (not shown), such as a heater and a temperature sensor, inside theapplicator gun 18 and to establish a ground connection for theapplicator gun 18. The opposite ends of the electrical leads 36-40, theheating element 32 and the temperature-sensingdevice 34 are operatively connected to anelectrical plug 20 that is intended to couple the electrical leads 36-40 of thehose 12 with a control panel at thesupply tank 16. Extending along the length of thehose 12 is ametal braided cable 44 separated from the electrical leads 36-40 by a helically wound layer of electrically-insulatingtape 46 and a thermal insulation layer 48 (e.g., Ararmid fibers). The metal braidedcable 44 is used to establish an electrical ground connection with theapplicator gun 18 via one of the electrical leads 36-40. Covering the metal braidedcable 44 is at least onethermal insulation layer 50 and a helically wound layer of tape 52 (e.g., polyethylene tape) that holds thethermal insulation layer 50 in place. Suitable hose constructions for the various layers and leads ofhose 12 are described, for example, in U.S. Pat. Nos. 4,553,023 and 4,455,474, the disclosures of which are hereby incorporated by reference herein in their entirety. - With continued reference to
FIGS. 1 and 2 , abraided sleeve 54 overliestape 52 and covers the full length ofhose 12 to thereby serve as a flexible, protective cover. Thebraided sleeve 54 is compressively attached at the opposite ends ofhose 12 by metal band clamps 56, 58 but is otherwise unattached along its length totape 52. Thebraided sleeve 54 is formed from a monofilament of a durable thermoplastic resin, such as a nylon or polyamide (based on either polyamide 6; polyamide 6,6;polyamide 12; or polyamide alloys or blends), woven into a braided form. The invention contemplates that any other suitable polyamides formed by the condensation of dibasic organic acids and diamines may also be used. Polyamides have a greater durability than polyester, which is used in conventional protective sleeves. Thebraided sleeve 54 may be constructed to expand radially so that thesleeve 54 may slide overhydraulic fittings hose 12. - In one specific embodiment of the invention, the
braided sleeve 54 is formed from oval-shaped monofilaments (0.019″ by 0.060″) each containing one (1) fiber per monofilament, has a wall thickness between about 0.040″ and 0.050″, includes eighty (80) interlaced carriers, has an expanded outer diameter of about 2″, and has a pull-down diameter of about 1.5″. A braided sleeve particularly suitable for use as braidedsleeve 54 in the invention is commercially available under the ALTA-FLEX TUFF trade name from Alta Technologies, Inc. of Pennington, N.J. - The
braided sleeve 54 provides continuous abrasion resistance believed to be superior to conventional outer protective sheaths typically formed from a braided polyester or polyester monofilament. As a result, the longevity ofhose 12 is increased because thebraided sleeve 54 is less likely to be torn, thereby exposing the underlying hose components. Thebraided sleeve 54 is less likely to damage the article or workpiece receiving the thermoplastic material, as compared with conventional protective sheaths of rigid corrugated plastic, because the exterior surface is relatively smooth (i.e., non-corrugated) and free of corrugations or other undulating structure. Thebraided sleeve 54 slides smoothly across the workpiece without causing abrasion and without snagging or tearing. - With reference to
FIGS. 2-4 , placed over the respective inlet and discharge ends 24, 26 are respective hose cuffs 60, 62 that lend rigidity to these portions ofhose 12.Hose cuff 62 aids in preventing loosening of thebraided sleeve 54 from compressive securement by metal band clamp 58 at the discharge end 26 ofhose 12. To that end, thehose cuff 62 applies a radial compressive force to thebraided sleeve 54, which assists a metal band clamp 58 in securing thebraided sleeve 54 with thehose 12. -
Cuff 62 includes atubular body 64 having a tubular sidewall 65 of a suitable radial thickness to be structurally rigid and a two-piece collar 66 assembled from a pair of substantially identical semi-circular collar portions 66 a, 66 b each having anaxial opening axis 91. In certain embodiments, thetubular body 64 and the collar portions 66 a, 66 b are molded from any suitable rigid thermoplastic resin, such as RYTON polyphenylene sulfide commercially available from Chevron Phillips Chemical Company of The Woodlands, Texas. One of a pair of tube-encasedbundles 70, 72, each containing a subset of electrical leads 36-40, projects through a corresponding one of theaxial openings single bundle 70, 72, one of the two collar portions 66 a, 66 b may lack the corresponding one of theaxial openings axial openings openings axial openings circular opening 74 fortube 22, although the invention is not so limited as theaxial openings - With reference to
FIGS. 3 and 4 , each of the collar portions 66 a, 66 b features a corresponding one ofsemi-circular openings FIG. 4 ) that, when the two collar portions 66 a, 66 b are assembled to formcollar 66, collectively form a substantiallycircular opening 74 fortube 22. The two collar portions 66 a, 66 b are secured together byconventional fasteners 81 that engage registered fastener holes 75 formed in each semi-circular collar portion 66 a, 66 b. Surrounding the outer periphery of each of the collar portions 66 a, 66 b is anannular lip 76 that extends radially inward toward thecircular opening 74.Lip 76 engages acircumferential groove 77 formed in thesidewall 63 of thetubular body 64 when the collar portions 66 a, 66 b are assembled to formcollar 66 and are attached to thecuff 62.Lip 76 is defined by a groove 79 formed in the assembled collar portions 66 a, 66 b that receives a radially-outward extendingrim 78 defined intubular body 64 bygroove 77. Contact between the interlockedlip 76 and rim 78 provides resistance to relative axial movement between the assembled collar portions 66 a, 66 b and thecuff 62. - Each of a pair of diametrically
opposed keys 80 projecting from thesidewall 63 oftubular body 64 is received and captured in one of a pair of correspondingkeyways 83, which are defined as corresponding axial gaps between thelips 76 of the assembled collar portions 66 a, 66 b. Formed on the interior of the collar portions 66 a, 66 b areflats 82 that mate, when the collar portions 66 a, 66 b are assembled and attached to thetubular body 64, with a hexagonal-shaped shoulder 84 onhydraulic fitting 27. Contact between theflats 82 and the shoulder 84 and contact between thekeys 80 andkeyways 83 collectively operate to prevent relative rotation between thetubular body 64 and the assembled collar portions 66 a, 66 b. The arrangement and configuration of theflats 82 and the geometry of the shoulder 84 are selected to provide the requisite contribution to the rotation resistance. - Slotted
openings tubular body 64 such that thegroove 77 is positioned axially betweenopenings tubular body 64. Each of the slottedopenings tubular body 64, although the invention is not so limited in that the slottedopenings openings tubular body 64. - After assembly and with reference to
FIGS. 1-4 ,hose cuff 62 is attached to the discharge end 26 of thehose 12, andhydraulic fitting 27 ofhose 12 is engaged with a complementary hydraulic fitting on theapplicator gun 18. Thedischarge end 26 of thehose 12 is positioned inside a recess defined between two assembled housing halves orshells applicator gun 18. The slottedopenings posts shells shells openings posts posts tubular body 64 and parallel to the major axis of the slottedopenings openings posts hose 12 when thedischarge end 26 is attached to theapplicator gun 18. The mechanical engagement between the slottedopenings posts hose 12 so that thebraided sleeve 54 is less likely to detach fromhose 12. In addition, the aforementioned mechanical engagement provides additional pull-out or pull-off resistance to the discharge end 26 ofhose 12. - With reference to
FIG. 5 in which like reference numerals refer to like features inFIGS. 1-4 and in an alternative embodiment of the invention, a singleshallow groove 100 may extend circumferentially about thetubular body 64. Thegroove 100 is dimensioned and configured to engage a corresponding radially-inward extending flange ornecked region 102 of a pair of shells, of which shell 94 a is shown, of an applicator gun (not shown but similar to applicator gun 18) to provide a locking interface between thehose 12 and the applicator gun. A person of ordinary skill in the art will appreciate that thetubular body 64 ofhose cuff 62 may be modified with one or more cutouts or grooves connectable with complementary structure on a housing of an arbitrary applicator gun. - While the present invention has been illustrated by a description of various preferred embodiments and while these embodiments have been described in considerable detail in order to describe the best mode of practicing the invention, it is not the intention of applicant to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications within the spirit and scope of the invention will readily appear to those skilled in the art. The invention itself should only be defined by the appended claims, wherein I claim:
Claims (17)
1. An apparatus for transferring a heated liquid from a heated liquid source to a liquid dispensing apparatus, comprising:
a conduit having an inlet end adapted to be coupled in fluid communication with the heated liquid source and a discharge end adapted to be coupled in fluid communication with the liquid dispensing device;
a thermal insulation layer extending between said inlet end and said discharge end of said conduit;
a heating element extending between said inlet end and said discharge end of said conduit and positioned between said thermal insulation layer and said conduit, said heating element adapted to generate and transfer heat to said conduit; and
a woven outer covering extending between said inlet end and said discharge end of said hose and having a surrounding relationship with said hose, said woven outer covering including a plurality of braided polyamide monofilaments.
2. The hose of claim 1 wherein said woven outer covering includes a plurality of oval-shaped monofilaments.
3. The hose of claim 1 wherein said woven outer covering is formed from eighty monofilament carriers.
4. The hose of claim 1 wherein said woven outer covering has an outer surface free of undulating structures.
5. The hose of claim 1 further comprising:
a hose cuff attaching said woven outer covering to said discharge end of said hose, said hose cuff including at least one coupling element for securing said hose cuff to the liquid dispensing device and preventing relative axial movement between said hose cuff and the liquid dispensing device.
6. An apparatus for transferring a heated liquid from a heated liquid source to a liquid dispensing device, comprising:
a conduit having an inlet end adapted to be coupled in fluid communication with the heated liquid source and a discharge end adapted to be coupled in fluid communication with the liquid dispensing device;
a thermal insulation layer extending between said inlet end and said discharge end of said conduit;
a heating element extending between said inlet end and said discharge end of said conduit and positioned between said thermal insulation layer and said conduit, said heating element adapted to generate and transfer heat to said conduit; and
a hose cuff attached to said discharge end of said hose, said hose cuff including at least one coupling element for directly securing said hose cuff to the liquid dispensing device and preventing relative axial movement between said hose cuff and the liquid dispensing device.
7. The hose of claim 6 wherein said hose cuff includes a sidewall, and said coupling element comprises a recess in said sidewall, said recess shaped to engage a complementary portion of the liquid dispensing device.
8. The hose of claim 7 wherein said sidewall is cylindrical, and said recess includes a major axis aligned substantially tangential to a circumference of said sidewall.
9. The hose of claim 6 wherein said hose cuff includes a sidewall and said coupling element comprises an opening extending through said sidewall, said opening shaped to engage a complementary portion of the liquid dispensing device.
10. The hose of claim 9 wherein said sidewall is cylindrical, and said opening includes a major axis aligned substantially tangential to a circumference of said sidewall.
11. The hose of claim 6 wherein said hose cuff includes a tubular body having a first open end, a second open end, and a collar covering said first open end, said tubular body is substantially centered about an axis extending between said first and second open ends, said collar includes a first opening, and said hose includes a first electrical lead projecting through said first opening.
12. The hose of claim 11 wherein said collar includes a second opening, and said hose includes a second electrical lead projecting through said second opening.
13. The hose of claim 12 wherein said collar includes a third opening substantially centered about said axis, and said hose includes a tube confining the heated liquid during transfer and projecting through said third opening, said first opening and said second opening being radially spaced from said third opening.
14. The hose of claim 13 wherein said first opening and said second opening are positioned on opposite sides of said third opening.
15. A method of attaching a hose between a liquid source and a liquid dispensing device, comprising:
coupling a fitting at a discharge end of the hose with the liquid dispensing device; and
directly coupling a hose cuff at the discharge end of the hose with a portion of the liquid dispensing device for preventing relative axial movement between the hose cuff and the liquid dispensing device during use.
16. The method of claim 15 wherein directly coupling further comprises:
engaging the hose cuff with the liquid dispensing device.
17. The method of claim 15 wherein directly coupling further comprises:
engaging a groove on the hose cuff with a post inside a shell of the liquid dispensing device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/874,711 US20050008353A1 (en) | 2003-07-08 | 2004-06-23 | Heated hose for carrying molten thermoplastic material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US48545603P | 2003-07-08 | 2003-07-08 | |
US10/874,711 US20050008353A1 (en) | 2003-07-08 | 2004-06-23 | Heated hose for carrying molten thermoplastic material |
Publications (1)
Publication Number | Publication Date |
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US20050008353A1 true US20050008353A1 (en) | 2005-01-13 |
Family
ID=33567785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/874,711 Abandoned US20050008353A1 (en) | 2003-07-08 | 2004-06-23 | Heated hose for carrying molten thermoplastic material |
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US (1) | US20050008353A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US20070114055A1 (en) * | 2005-11-22 | 2007-05-24 | Herborth Jason T | Insulated article and method of making same |
WO2013066713A1 (en) * | 2011-10-31 | 2013-05-10 | Nordson Corporation | Hot melt adhesive dispensing system having an integral fluid and electrical connector |
US20140119715A1 (en) * | 2012-10-25 | 2014-05-01 | Graco Minnesota Inc. | Heater power control system |
US20140361099A1 (en) * | 2013-06-05 | 2014-12-11 | Finishing Brands Holdings Inc. | System and Method for Thermal Control of Flow Through a Conduit |
US20170009926A1 (en) * | 2014-02-14 | 2017-01-12 | Parker-Hannifin Corporation | Heated hose and method |
WO2018194926A1 (en) * | 2017-04-21 | 2018-10-25 | Nordson Corporation | Dispensing system |
WO2019155047A1 (en) * | 2018-02-12 | 2019-08-15 | Paul Dunn | A heating system for preventing freezing of a fluid in a conduit |
US10493880B2 (en) | 2014-09-11 | 2019-12-03 | Faurecia Automotive Seating, Llc | Trim-cover fastener for vehicle seat |
EP3306160B1 (en) | 2016-07-15 | 2021-11-17 | Nordson Corporation | Adhesive transfer hose having a barrier layer and method of use |
EP4023425A1 (en) * | 2020-12-30 | 2022-07-06 | Graco Minnesota Inc. | Heated whip hose |
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US4518016A (en) * | 1983-07-08 | 1985-05-21 | Nordson Corporation | Hot melt adhesive hose cuff |
US4667084A (en) * | 1984-04-30 | 1987-05-19 | Meltex Verbindungs-Technik Gmbh | Electrically heated hose for heating melted adhesive and atomizing air fed to a spraying head |
US4616894A (en) * | 1985-01-14 | 1986-10-14 | Nordson Corporation | Electrical connector for hot melt hose unit and gun |
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US5608963A (en) * | 1992-06-12 | 1997-03-11 | Aeroquip Corporation | Method of forming hose and fire sleeve end assembly |
US6152386A (en) * | 1998-11-06 | 2000-11-28 | Nordson Corporation | Handgun and hose assembly for dispensing liquids |
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US7159905B1 (en) * | 2003-03-03 | 2007-01-09 | Stark Patricia A | Material feed hose system and method of constructing a material feed hose system |
US20060289560A1 (en) * | 2005-05-06 | 2006-12-28 | Illinois Tool Works Inc. | Hot melt adhesive hose assembly having redundant components |
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US7544890B2 (en) * | 2005-11-22 | 2009-06-09 | Pratt & Whitney Canada Corp. | Insulated article and method of making same |
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US20140361099A1 (en) * | 2013-06-05 | 2014-12-11 | Finishing Brands Holdings Inc. | System and Method for Thermal Control of Flow Through a Conduit |
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WO2018194926A1 (en) * | 2017-04-21 | 2018-10-25 | Nordson Corporation | Dispensing system |
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Legal Events
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Owner name: NORDSON CORPORATION, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAFITTE, BRUCE A.;REEL/FRAME:015513/0742 Effective date: 20040623 |
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