ES1168960U - High flow light hose assembly (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Hose set consisting of: an inner tube including one or more elastomeric materials and a thermoplastic material, where the inner tube has a first length and a first circumference less than a minimum expansion pressure, where the inner tube can expand to one or more of a) a second longer length and b) a second longer circumference after application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure; and an outer tube covering the inner tube, where the former has a length and a welded seam along the length of the outer tube and said seam consists of molten material from this tube. (Machine-translation by Google Translate, not legally binding)

Description

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DESCRIPTION

High flow light hose assembly Field of the invention

[0001] The present invention relates to a hose assembly, preferably a garden hose assembly, which includes a tube with an outer jacket made of textile or non-textile material, which is lightweight, durable and versatile. The tube can expand longitudinally along the longitudinal axis of the hose between the ends thereof or radially or circumferentially, until an expanded state is obtained in response to the application of at least a minimum liquid pressure in an inner tube of the hose. When the pressure of the liquid decreases to less than the minimum pressure of the liquid, the hose assembly will contract. The two-layer construction of the hose assembly allows it to be stored in relatively compact spaces and, in comparison with conventional hose constructions, allows similar flows to be obtained with approximately half the weight and improved maneuverability. In one embodiment, the jacket is formed around the tube in a continuous process that welds a textile or non-textile material, preferably with hot air, into the jacket. The welded joint forms a region of the shirt that ideally has twice the thickness of the rest of the shirt. This thicker region is a stiffer section of the shirt, which makes the hose more controllable and has a more uniform use.

Background of the invention

[0002] Different types or styles of garden hoses are known in the art, which are available in the market.

[0003] For example, conventionally the conventional hoses are polymeric and can be reinforced, have a substantially fixed length and a low radial expansion after the internal application of the liquid pressure. Due to its construction, some conventional hoses can be relatively heavy and difficult to use and store.

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[0004] Recently, garden hoses have been introduced that can expand longitudinally several times along its length, as compared to the length of a hose in a counter or non-pressurized state. In some embodiments, said hoses have a construction that includes a jacket surrounding an expandable liquid transport tube. Radially and longitudinally expandable hoses are popular for different reasons including, but not limited to, lightweight construction and ease of storage when not in use.

[0005] Longitudinally expandable hoses can be purchased from various commercial suppliers. Hoses are also described in various patents and publications, see for example: US Patents. UU. No. 6,948,527; 7,549,448; 8,371,143; 8,776,836; 8,291,942; 8,479,776; 8,757,213; as well as the US patent application publications. UU. No. 2014/0150889 and 2014/0130930.

[0006] A problem with some of the longitudinally expandable hoses is that they can tangle, bulge, fail or leak at one or more points along their length, for example, at a point of connection to a coupler or connector in the end of the hose, after several cycles of expansion and contraction.

Summary of the invention

[0007] The problems described above and others are solved with the hose assemblies of the present invention, which are relatively light, durable and versatile compared to traditionally conventional hoses. In some embodiments, the hose assemblies provide a similar flow rate to conventional garden hoses, at approximately half the weight. The hose assemblies also provide improved maneuverability due to their light weight and tangle resistance as it has a two-layer non-bonded jacket construction, in addition to being easy to store compared to conventional hoses.

[0008] According to an embodiment or objective of the present invention, a set of

hose is delivered composed of a lightweight thermoplastic or elastomeric inner tube,

surrounded by an outer tube of textile or non-textile material, which serves as a jacket for the tube

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inside. This shirt also prevents the length of the product from changing under different pressure conditions. The length of the product is fixed by the length of the outer jacket. The inner tube can expand longitudinally along the longitudinal axis of the hose between the ends of this or the couplers, as well as along a radial axis of the tube, when pressure is applied to a minimum or higher pressure value of the liquid in the inner tube. When the pressure decreases to less than the minimum liquid pressure, the inner tube of the hose assembly will contract longitudinally and radially. The radial and longitudinal contraction rates depend on the composition of the inner tube. The outer tube limits the radial and longitudinal expansion of the inner tube in a realization.

[0009] There is also another embodiment or objective of the present invention, which is to provide a hose assembly with an outer tube of textile or non-textile material, welded around the inner tube and which includes a welded seam that extends along of a longitudinal axis of said assembly. The welded seam has a greater thickness, that is to say the thickness of the wall, in comparison with the thickness of the wall of an outer tube of seamless textile or non-textile material.

[0010] Another embodiment or objective of the present invention is to provide a method for producing a hose assembly consisting of a sewing or hot air welding process, where the outer tube is formed by welding around the inner tube, ideally air welding hot and through a continuous process. The circumferential size of the outer tube can be modified to produce hose assemblies with different maximum internal diameters of the inner tube.

[0011] An embodiment or objective of the present invention is to provide a method for producing a hose assembly that includes the steps for obtaining a textile or non-textile material that is synthetic or polymeric or a combination of both, where the sides are heated of the material at a melting temperature or higher and joining the sides around the inner tube to form a weld. As the textile or non-textile material or a combination of both joins along the inner tube, the outer tube is formed with a welded seam along the length of the hose assembly. Favorably, the preparation process of the hose assembly of the present invention i) allows the fabrication of an outer tube with a weld that can be more resistant than the original material, ii) has costs of

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relatively low labor force and iii) also produces a construction with the inner tube inserted in the outer tube, as part of the welding process.

[0012] There is also another embodiment or objective of the present invention, which is to provide the hose assembly with a desirable tear strength, so as to avoid the failure of one or more of the inner and outer tubes at pressures. of work. In various embodiments, the inner tube and the outer tube have breakage strength ranges between 1,379 kPa (200 psi) and 8,274 kPa (1,200 psi) or approximately 10,342 kPa (1500 psi) measured according to the resistance test break described in ASTM D380-94 (2012). The desirable tear strength can be obtained from hose assemblies with inner and outer tubes with a total weight between 74.4 g / m (2.5 lb per 50 ft of tube length) and 163.68 g / m (5.5 lb per 50 ft of tube length). An embodiment or objective of the present invention is to provide a hose assembly capable of withstanding water pressures in the range of 2,758 kPa (400 psi). Although the hose is of a robust construction, the assembly is relatively light, for example, approximately 0.12 kg per meter (4 lb by 50 ft) in a preferred embodiment.

[0013] In one aspect, a hose assembly is delivered consisting of: an inner tube that includes one or more elastomeric materials and a thermoplastic material, where the inner tube has a first length and a first circumference less than a minimum expansion pressure , where the inner tube can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum expansion pressure or higher; and an outer tube covering the inner tube, where the former has a length and a welded seam along said length of the outer tube, which encompasses the molten material of the outer tube.

[0014] In another aspect, a process is delivered to produce a hose assembly consisting of: obtaining an inner tube that includes one or more elastomeric materials and a thermoplastic material, where the inner tube has a first length and a first circumference less than a minimum expansion pressure, where the inner tube can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the liquid pressure on an inner surface of the tube

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inside at minimum or higher expansion pressure; obtain a material that has a first and second end, a first and second side, where the sides are between the ends; wrap the material around the inner tube and splice the first and second side of the material and heat the material to melt and join the first side to the second side along the length of the sides and, thus, form an outer tube with a seam welded along the length of the hose assembly, where during the formation of the outer tube, a section of the inner tube is located inside the outer tube.

[0015] In a further aspect, the hose assembly with fabric jacket is delivered

composed of an inner tube consisting of a thermoplastic material, where this tube has a length and a first circumference less than a minimum expansion pressure, where the inner tube can expand to a second larger circumference after the

application of liquid pressure on an inner surface of the inner tube at the pressure of

minimum or higher expansion, and an outer tube covering the inner tube, where the first one is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; and where the inner and outer tubes have a total weight between 74.4 g / m and 163.68 g / m, and a breaking strength of 1,379 kPa and 10,342 kPa measured in accordance with ASTM D380-94 (2012) .

[0016] In a further aspect, the hose assembly with fabric jacket is delivered

composed of an inner tube consisting of one or more elastomeric materials and a thermoplastic material, where this tube has a first length and a first circumference less than a minimum expansion pressure, where the inner tube can be expanded to one or more of ) a second larger length and b) a second larger circumference after the application of the liquid pressure on an inner surface of the inner tube at the pressure of

minimal or higher expansion; an outer tube that covers the inner tube, where the first one does not

is attached, connected or spliced to the inner tube between the end couplers of the hose assembly; where the outer tube consists of a textile material; and where the inner and outer tubes have a total weight between 74.4 g / m and 163.68 g / m, and a breaking strength between 1,379 kPa and 10,342 kPa measured in accordance with ASTM D380-94 (2012 ).

[0017] In a further aspect, the hose assembly is delivered composed of an inner tube consisting of one or more elastomeric materials and a thermoplastic material, where

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This tube has a first length and a first circumference of less than a minimum expansion pressure, where the inner tube can be expanded to one or more of a) a second larger length and b) a larger second circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure; an outer tube covering the inner tube, where the first is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; and where the inner and outer tubes have a total weight between 74.4 g / m and 163.68 g / m, and a breaking strength between 1,379 kPa and 10,342 kPa measured in accordance with ASTM D380-94 (2012 ).

[0018] In a further aspect, the hose assembly with fabric liner is delivered composed of an inner tube consisting of a thermoplastic material, where this tube has a length and a first circumference less than a minimum expansion pressure, where the inner tube can be expanded to a second larger circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure, and an outer tube covering the inner tube, where the first one does not is attached, connected or spliced to the inner tube between the end couplers of the hose assembly; and where the inner and outer tubes as a whole have a resistance to breakage by linear mass density between 18.53 kPa ^ m / g to 100 kPa ^ m / g, where said resistance is measured in accordance with ASTM D380- 94 (2012).

[0019] In a further aspect, the hose assembly with a fabric jacket is delivered composed of an inner tube consisting of an elastomeric material and a thermoplastic material, where this tube has a first length and a first circumference less than a pressure of minimum expansion, where the inner tube can be expanded to one or more of a) a second larger length and b) a second larger circumference after the application of the liquid pressure on an inner surface of the inner tube to the expansion pressure minimum or higher; an outer tube covering the inner tube, where the first is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; where the outer tube consists of textile material; and where the inner and outer tubes as a whole have a resistance to breakage by linear mass density between 18.53 kPa ^ m / g at 100 kPa ^ m / g, where said resistance is measured in accordance with the standard

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ASTM D380-94 (2012); and where the inner and outer tube have a total weight between 74.4 g / m and 163.68 g / m.

[0020] In a further aspect, the hose assembly is delivered composed of an inner tube consisting of one or more elastomeric materials and a thermoplastic material, where this tube has a first length and a first circumference less than a minimum expansion pressure , where the inner tube can be expanded to one or more of a) a second larger length and b) a larger second circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum expansion pressure or higher; an outer tube covering the inner tube, where the first is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; and where the inner and outer tubes as a whole have a resistance to breakage by linear mass density of between 52 kPa ^ m / g and 100 kPa ^ m / g, where said resistance is measured in accordance with ASTM D380-94 (2012).

Brief description of the drawings

[0021] Read the detailed description of the invention and analyze the drawings to obtain a better understanding of the invention and to know other features and advantages. Where:

[0022] FIG. 1 is a partial longitudinal and transverse side view of an embodiment of a hose assembly of the present invention, in a longitudinally and circumferentially contrafda position;

[0023] FIG. 2 is a partial longitudinal and transverse side view of an embodiment of a hose assembly of the present invention, in an expanded position; Y

[0024] FIG. 3 is a partial longitudinal side view of an embodiment of the hose assembly of the present invention, which particularly illustrates a welded seam of the outer tube produced by a sewing method with hot air, which covers an inner tube within the outer tube.

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Detailed description of the invention

[0025] In this specification, all the numbers given in this document individually designate a reference value in a realization, regardless of whether or not the word "approximately" or similar ones is used in this regard. In addition, when a term such as "about" or "about" is used together with a value, the numerical range may also vary for example by 1%, 2%, 5%, or more in other independent embodiments.

[0026] The hose assembly of the present invention includes an inner tube with a jacket made of textile or non-textile material, where said assembly has a relatively light weight, is durable and versatile. The inner tube can be expanded circumferentially or longitudinally to an expanded position or state, in response to the internal application of at least a minimum liquid pressure in the inner tube. In further embodiments, the inner tube can be expanded longitudinally along the longitudinal axis of the tube, in response to the internal application of at least a minimum liquid pressure in the inner tube. The circumference of the jacket controls the radial expansion of the inner tube. The length of the jacket controls the longitudinal expansion of the inner tube. The inner tube contracts longitudinally, radially or circumferentially when the pressure of the liquid inside the tube decreases to less than the minimum liquid pressure, to a counter or non-expanded position or state. Inner tubes containing elastomers generally contract more rapidly than inner tubes with compositions containing thermoplastic polymers, such as polyvinyl chloride. In one embodiment, the outer tube jacket is formed around the inner tube in a continuous process that welds a textile or non-textile material, preferably with hot air, into the jacket.

[0027] Now, in relation to the drawings, where similar reference numbers refer to similar parts in all different views; a hose assembly 10 is illustrated in FIG. 1 and 2, where FIG. 1 illustrates the hose assembly in a counter or out of order position and FIG. 2 an expanded position. The hose assembly 10 includes an inlet 14 and an outlet 16, with a liquid conduit 12 located between them. The set of

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hose includes an inner tube 20 that extends between couplers or connectors, see for example, the male coupler 60 and the female coupler 50. The inner tube 20 expands and contracts automatically. The inner tube 20 has an inner surface 22 and an outer surface 24, see FIG. 1 and 2 for example. By using the hose assembly as a garden hose, when a liquid is introduced, water for example, into the inner tube 20 and exerts at least a minimum liquid pressure on an inner surface 22, the inner tube 20 expands, so general radially, from the first circumference to a second larger circumference in an expanded position; and longitudinally between the couplers 50 and 60. In some embodiments, the inner tube 20 is formed from a material that can be expanded longitudinally to a length that is usually at least twice, preferably double or quadruple, and ideally four times the length of the inner tube 20 when it is in a counter or relaxed position. The inner tube 20 can be formed such that the second circumference provides an inner surface of the tube 22 with a desired inner diameter, for example of about 1.27 cm (0.5 in) or 1.59 cm (0.625 in) . When the liquid pressure decreases to less than the minimum liquid pressure, the inner tube 20 relaxes or contracts radially, preferably back to the first circumference in one embodiment. In other embodiments, the inner tube may not contract until the first circumference.

[0028] The thickness of the inner tube 20 may vary according to the materials of its construction. In various embodiments, the wall thickness of the inner tube generally ranges from about 1.0 to 2.0 mm, ideally 1.2 to 1.8 mm, preferably from 1.40 to 1.65 mm, measured in direction. radial in a counter position.

[0029] The hose assembly 10 also includes an outer jacket or tube cover 40 which is also connected between the first and second couplers, see for example the male couplers 60 and the female couplers 50. In one embodiment, the outer tube 40 it is not connected or spliced to the inner tube 20 or an outer sliding coating layer 30, described below, between the couplers. In other words, the outer tube 40 is preferably not assembled, connected, attached or attached to the inner tube 20 or the sliding coating layer 30, when present, along the entire length of the inner tube 20 and the layer of sliding liner 30 between the first and second end of the outer tube 40 and, in this way, the tube 40 can move freely in relation to the inner tube 20 or

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the sliding coating layer 30, when the hose assembly expands or contracts. In one embodiment, the radial, circumferential or longitudinal expansion of the inner tube 20 is limited by the dimensions, that is, the maximum length or the inner diameter or the circumference of the outer tube 40. The outer tube 40 is configured to protect the inner tube 20 and the sliding coating layer 30, when present, against cuts, frictions, abrasions, perforations, excessive expansions (breakage) or UV exposure.

[0030] In various embodiments, the outer tube 40 can be braided or woven into a fabric that is subsequently formed in the tube. Some embodiments use nonwoven fabrics. In further embodiments, the outer tube is formed from a non-textile material, such as a film, a fiber reinforced film, a sheet or a similar construction. Suitable materials include, among others, polyolefins, polyesters and polyamides such as nylon. Natural materials can be used in some embodiments. In some embodiments, polyester is preferred. The outer tube 40 must be formed from a material that is sufficiently malleable and resistant to withstand the desired internal pressure, which can be exerted by the outer surface 24 of the inner tube 20. The thickness of the outer tube 40 depends on the thread denier when materials similar to fabric are used. This will be determined by the desired internal pressure as mentioned above.

[0031] In some embodiments, the hose assembly 10 is formed such that the outer tube 40 has an outer diameter between 0.635 cm and 2.175 cm or approximately 1.27 cm and 2.54 cm, when the inner tube 20 it is subjected to a pressure of about 413.7 kPa (60 psi). This inner tube can be pressurized with any suitable procedure such as, among others, the tear strength test method described herein, modified in such a way that the inner tube is pressurized at the defined pressure. The outside diameter can be measured with a gauge.

[0032] An important aspect of the present invention is that the outer tube 40 or the hose assembly sleeve is formed around the inner tube 20, preferably by a continuous process. In a preferred embodiment, the hot air welding process is used. Although the described method uses the term "fabric", it is understood that the process can be applied and includes each of the materials indicated in this document.

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During the process, a piece of cloth (or other material), with the first and second ends and the first and second sides located between them, is formed to produce a tubular structure. A part of the first and second sides is heated to a temperature where the material that forms the fabric, particularly the polymer, melts and the sides meet, with the inner tube present inside or surrounded by the outer tube forming the fabric. A weld 46 is formed in the area where the fabric is heated and the sides are joined. As the fabric joins along the sides, the welded fabric forms a welded spine or seam 48, which extends longitudinally along the length of the fabric and encompasses the molten fabric. In a preferred embodiment, the welded seam has an overlap or weld width of 9.5 mm (0.375 in) +/- 1.5 mm (0.0625 mm), generally measured perpendicular to the seam length. In another embodiment, the variation is +/- 3 mm. In one embodiment, the process that forms the welded seam is one of the continuous type, where the fabric is heated with hot air at temperatures ranging between 550 and 750 ° C and preferably between 600 and 700 ° C. The welding process also produces a welded seam with a wall thickness that is usually at least 50% larger, it is desirable that it be at least 75% larger and preferably 100% larger, that is twice greater than the average thickness of the non-welded fabric of the outer tube.

[0033] In one embodiment, the inner tube 20 is provided from a reel or coil. In another embodiment, the inner tube 20 is provided directly from an ascending extrusion line. The inner tube enters a folding clamping device that contains a series of guides and is combined with a woven and flat fabric. The fabric is provided from a source of fabric, such as a bulk container, and is straightened and tensioned as it enters the folding fastener. The folding fastening device forms the fabric around the inner tube, shapes the fabric in a round tubular structure and creates the desired or correct overlap for welding. The tubular fabric profile and the inner tube leave the folding clamping device. At the exit of the folding fastening device, a nozzle directs hot air between the overlapping side surfaces of the fabric. The hot air heats the fabric to its melting point or above it, just before the fabric and the inner tube pass through a set of pressure rollers, which force the surfaces of the heated fabric against each other under pressure. At this point a strong bond is formed between the two surfaces of the fabric. The fabric and tube can be wound on a reel for later assembly or cut to size and processed immediately on a finished hose. Different

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companies sell hot air sewing devices, such as Miller Weldmaster of Navarre, OH.

[0034] The inner tube 20 can be formed from any polymeric or elastic material

suitable. Elastomeric materials are preferably used when the inner tube 20 can be expanded longitudinally. Suitable materials include, among others, rubbers, whether natural, synthetic and combinations of both thermoplastics and various thermoplastic elastomers that include thermoplastic vulcanizates. Suitable thermoplastic elastomers include, among other styrene block copolymers, such as SEBS, SEEPS, SBS and SIS. In one embodiment, the elastomeric inner tube has a hardness ranging from 20 to 60 Shore A, ideally from 25 to 60 Shore A, and preferably from 30 to 50 Shore A, measured in accordance with ASTM D-2240. Suitable thermoplastics include, among others, vinyl polychloride (PVC). Non-exclusive examples of suitable PVC grades include standard and high molecular weights. The inner tubes containing thermoplastic have a hardness ranging from 50 to 80 Shore A and preferably from 60 to 70 Shore A, measured in accordance with ASTM D-2240. In various embodiments, the inner or expandable tubes or any of the constructions described in one or more of the following patents and publications may be used, and are incorporated herein for reference purposes: US Pat. UU. No. 6,948,527; 7,549,448; 8,371,143; 8,776,836; 8,291,942; 8,479,776; 8,757,213; 8,936,046; 9,022,076; as well as the US patent application publications. UU. No. 2014/0150889; 2014/0345734; 2015/0007902; 2015/0041016; 2015/0129042 and the publications

International No. WO2014 / 169057; and WO2015 / 023592.

[0035] The inner tube compositions of the present invention may include additional additives that include, but are not limited to, antioxidants, foaming agents, pigments, thermal stabilizers, UV stabilizers / absorbers, processing additives, flow enhancing agents, nanoparticles , platelet fillers and non-platelet fillers.

[0036] In some embodiments of the present invention, the sliding coating layer 30 is provided on the outer surface 24 of the inner tube 20, see FIG. 1 and 2. In a preferred embodiment, the sliding coating layer 30 can be extruded onto or co-extruded with the inner tube layer 20. Other methods of

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application, such as the coating, provided that the sliding coating performs its intended function. In some embodiments of the present invention, a sliding liner may not be required according to the selected materials and the manufacturing method of the inner tube.

[0037] The sliding coating layer 30 may be of continuous or discontinuous layers or layers. In a preferred embodiment, the sliding coating layer is continuous, at least before the first expansion of the inner tube 20, after the application of said layer. Depending on the thickness of the sliding coating layer 30, the relatively thin layers may have cracks, divisions, cracks, fractures or similar effects, after one or more expansions of the inner tube 20. However, it is important to note that it has been shown that These layers are still effective. That said, the initial thickness of the sliding coating layer 30 generally ranges from about 0.025 mm to 0.51 mm, ideally from 0.05 to 0.25 m and preferably from 0.10 to 0.20 mm, or about 0.15 mm measured in radial direction.

[0038] As illustrated in FIG. 1 and 2, the sliding coating layer 30 is between the inner tube 20 and the outer tube cover 40. In a preferred embodiment, the sliding coating layer is not directly connected to the outer tube cover 40 between the first and second coupler, p. eg, the male coupler 60 and the female coupler 50, such that this cover 40 can slide or move relative to the sliding liner layer 30 during the expansion and contraction of the hose assembly 10. In an expanded position, The outer surface of the sliding coating layer 30 is in contact with the inner surface of the outer tube cover 40.

[0039] The sliding coating layer includes a lubricant, which is optionally incorporated or mixed with the transport material.

[0040] In one embodiment, the lubricant is a siloxane polymer, a copolymer or a fluorinated polymer or a combination thereof. Dow-Corning markets a master mix of siloxane polymer, MB50-321 ™, and Wacker has Genioplast ™. McLube markets a fluorinated polymer called MAC 1080 ™. In some embodiments, the lubricant is

present in the sliding coating layer in an amount that is generally of

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approximately 1 to 40 parts, ideally 2 to 30 parts and preferably in an amount of 3 to 20 parts, based on 100 total parts by the weight of the sliding coating layer. In other embodiments, the lubricant may be a liquid, semi-solid or solid material, which serves to reduce friction between the inner tube and the outer tube. Non-exclusive examples of other lubricants include, among others, oils such as silicone oil, waxes, polymers and elastomers.

[0041] As described herein, in one embodiment the lubricant is mixed with a transport material that helps fix the lubricant on an outer surface of the inner tube. Suitable materials include, among others, polyolefins, thermoplastic elastomers or a combination of both. In one embodiment, the transport material includes a polyolefin and one or more of the thermoplastic elastomers used in the inner tube layer.

[0042] Together with the lubricant, the sliding coating layer may also contain additional additives that include, among others, antioxidants, foaming agents, pigments, thermal stabilizers, UV stabilizers / absorbers, processing additives, flow improvement agents , nanoparticles, platelet fillers and non-platelet fillers. If so desired, other lubricants or sliding lining layers known to those skilled in the art can also be used.

[0043] The hose assembly 10 includes a male coupler 60 at a first end and a female coupler 50 at a second end. The male coupler 60 includes an external threaded section 62 and an internal connector 63, permanently connected, such as by means of a snap fit, to the main body 66 of the female coupler 60. The connector 63 includes a rod 64 which initially has a further part small of the diameter 63 connected to a larger part of the diameter, which in turn is connected to the inner side of the threaded section 62. The liquid that passes through the male coupler 60 advances through an internal connector 63, generally through an opening 67 in the rod 64 and exits at the end of the connector 63 which is inside the threaded section 62. In one embodiment, the rod 64 is inserted into the inner tube 20. A part of the outer tube cover 40 is also located between the rod 64, the inner tube 20 and the ferula 68 of the male coupler 60. The inner tube 20 and the outer tube 40 are operatively connected and attached to the male coupler 60, by expanding the rod 64 externally to the splint 68. In other embodiments, the splint can be

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bend towards a relatively rigid rod to capture the inner tube and the outer tube between them and fix the tubes in the male coupler 60. Other fixing mechanisms can also be used.

[0044] The female coupler 50 includes a main body 56 with an internal threaded section 52, operatively and rotatably connected to a second end of the hose assembly 10, opposite the end containing the male coupler 60. The threaded section 52 is constructed of such that it can be operatively connected to a female connector of a pin, tap or other similar valve control device.

[0045] The internal connector 53 of the female coupler 50 rotates around the main body 56, such that this body also rotates in relation to the inner tube 20 and the outer tube 40, which are operatively connected or attached to the rod 54 A splint 51 is placed on the outer sleeve or tube 40 and the inner tube 20. Subsequently, the splint 51, the inner tube 20 and the outer tube with a fabric jacket 40 are installed on the rod 63. Then, the rod 63 expands to secure the hose in the connector. As mentioned above in relation to the male coupler, alternative constructions can be used to fix the inner tube 20 and the outer tube 40 to the female coupler 50. As illustrated in FIG. 1, the connector 53 includes a receptacle 55 in the form of a cavity, socket or the like, which fits the flange 57 of the main body 56. In the embodiment illustrated, the flange 57 is a ring-like element that protects internally from the main body 56 and includes an end located inside receptacle 55. The flange structure allows the main body 56 to rotate or rotate around the connector 53. The base of the threaded section 52 has a washer 59 to provide the desired seal between the female coupler and the device that is connected by screwing into the threaded section 52.

[0046] Alternatively, other couplers, connectors or hose end connections may be used, including, but not limited to, clamping, toothed or crimped (external) couplings that are made of plastic, metal or a combination of both.

[0047] The hose assembly 10 is illustrated in a counter position in relation to the length and circumference in FIG. 1. In this position, the elastic inner tube 20 is located

in a counter or relaxed state without an internal force applied to the inner surface 22,

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that is sufficient to expand or stretch the inner tube 20. Depending on the material used for the outer tube cover 40, there may be a gap between it and the sliding coating layer 30, if present or the inner tube 20, when the hose assembly is in a counter position.

[0048] The pressure of the liquid inside the inner tube 20 can be increased, for example, if the liquid is prevented from being expelled through the outlet 16, such as by means of an associated or similar nozzle (not shown) and liquid is introduced under pressure at the inlet 14 of the hose assembly 10. After a minimum threshold pressure is reached or exceeded, the inner tube 20 undergoes a longitudinal or circumferential expansion. The expansion of the inner tube 20 causes a decrease in the thickness of its wall and an increase in the diameter or circumference of said tube or the length of the inner tube in some embodiments. Therefore, a larger volume of the liquid may be present in the inner tube 20 in the expanded position, compared to the volume of the liquid that may exist in a counter position, less than the minimum liquid pressure.

[0049] Depending on the construction of the outer tube cover 40, when it is in the expanded position it may exhibit a relatively cylindrical and uniform arrangement along the length, see FIG. 2 for example.

[0050] The standard water pressure leaving the faucet of a municipal water system is approximately 310.3 to 517.1 kPa (45 to 75 psi) and usually around 413.7 kPa (60 psi ). Said pressure has a sufficiently higher level than the minimum liquid pressure required for the expansion of the hose. The minimum pressure of the liquid that causes the expansion of the inner tube 20 of the hose assembly 10, will vary according to the construction or composition of both. When a nozzle or other flow restriction device is connected to the male coupler 60 of the hose assembly 10, with the female coupler 70 operatively connected to a wrench, the inner tube 20 will expand when the valve on the key is opened or turned on. as the pressurized water flows to the hose. If the nozzle prevents the flow of liquid through the inner tube, the pressure inside it will reach substantially the same pressure value as that which comes from the source of liquid pressure, such as 289.6 kPa (60 psi) in the case of the standard municipal water supply. When liquid is discharged from outlet 16 of hose assembly 10 by means of a nozzle

17

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If appropriate, the pressure inside the inner tube 20 is reduced. The hose assembly will remain in an expanded position when the liquid pressure is maintained above the minimum liquid pressure. In a preferred embodiment, the couplers are full-pass connectors. They are not designed to create back pressure inside the hose.

[0051] The hose assemblies formed by the present invention are relatively light compared to a conventional garden hose. The hose assemblies of the present invention have the ability to withstand water pressures in the range of 2758 kPa (400 psi) and remain relatively light. For example, a 15-meter (50-foot) hose assembly of the present invention that includes end couplers or connectors can weigh between 1.8 to 2.3 kilos (4 to 5 pounds), with 15-inch inner and outer tubes meters in length approximately.

[0052] The hose assemblies of the present invention are also characterized by i) a given or combined weight of the inner tube and the outer tube according to the length or ii) the linear mass density. The constructions described in this document provide a hose assembly with an inner and outer tube with a combined total weight that is generally between 74.4 g / m and 163.68 g / m or 89.28 g / m and 148.80 g / mo well between 96.72 g / m and 133.92 g / m.

[0053] In relation to the ability of the hose assemblies of the present invention to withstand the pressure of water or other liquid within a desired range, the inner tube and the outer tube possesses a determined breaking strength. When mentioned in this document, the breaking strength is defined as the pressure measured inside the inner tube at the first failure of one of the inner and outer tubes, measured between 20 ° C to 24 ° C. Breaking strength depends on the construction of the hose assembly. In some embodiments, the outer tube, such as an outer fabric or textile jacket, may fail due to a tear or tear before the inner tube fails. The failure of the inner tube is characterized by a rupture that causes liquid leakage from inside the said tube. The hose assemblies of the present invention in preferred embodiments have an inner and outer tube with a breaking strength between 1,379 kPa and 8,274 kPa or 8,963 kPa and 10,342 kPa or between 2,758 kPa and 6,895 kPa or even between 4,137 kPa and 6,205 kPa, measured in accordance with the breaking strength test of ASTM D380-94 (2012).

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[0054] The tear strength test is performed by the tear strength test procedure. The section of the hose assembly containing an inner and outer tube to be tested should be cut to a length of 61 cm +/- 7.62 cm, (2 ft +/- 3 in). A male coupler is connected to the first end of the hose section that includes the inner tube and the outer tube and a female coupler is connected to a second end of the section. The female coupler is connected to a male connector of a test apparatus that includes a tank with a sufficient volume of water to complete the test. The test sample is held vertically in the test apparatus. The air is allowed to escape into the hose before testing. The male coupler is covered. The water temperature is maintained in a range of 20 ° C to 24 ° C, for example, by the use of a heating or cooling element. The test apparatus includes a positive displacement pump with a capacity of 8.3 liters per minute and 6895 kPa (2.2 gallons per minute and 1,000 psi). An electric motor drives the pump. The pump transfers the water through a liquid pipeline past a pressure transducer, for example the one marketed by Dynisco of Franklin, MA as the PT130-1M model that measures the pressure of the liquid, and with the section to be tested located at the liquid line downstream of the pressure transducer. The test apparatus may also include a pressure relief valve that can be adjusted to open at a given pressure, such as 6895 kPa (1,000 psi), to prevent pressure build-up to levels that could damage the pump or pipes of the device After connecting the hose section to the test apparatus, the pump is operated and the water flows to it, past the pressure transducer, and to the section of the hose that is plugged into the male end. The pressure increases in the process pipe between the pump and the valve, which is shown on the screen of the Dynisco model 1290, with maximum content capacity, of the pressure transducer. The pressure at which the first failure of the inner tube or the outer tube is observed is recorded as the breaking strength. The breakage resistance test is performed with the section of the hose submerged in water, to absorb part of the energy released when it breaks.

[0055] The hose assemblies of the present invention are also characterized, in some embodiments, by a breaking strength by linear mass density, for example kPa / (g / m) or kPa ^ m / g. The constructions described in this document provide a hose assembly with an outer tube and an inner tube that together have a resistance to breakage by linear mass density that generally varies between 18.53 kPa ^ m / g

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at 100 kPa ^ m / g or between 30.89 kPa ^ m / g and 95 kPa ^ m / g or even between 42.77 kPa ^ m / g and 85 kPa ^ m / g. The ranges indicated above apply particularly when the inner tube includes a thermoplastic material. The constructions that include inner thermoplastic tubes of the present invention can offer a light weight and high resistance to breakage. In other embodiments, the constructions provide a hose assembly with an outer tube and an inner tube that together have a resistance to breakage by linear mass density that generally ranges from 52 kPa ^ m / g to 100 kPa ^ m / g between 52 kPa ^ m / g and 95 kPa ^ m / g or even between 55 kPa ^ m / g and 85 kPa ^ m / g. For reasons of clarity, the inner tube in said constructions may include one or more elastomeric materials and a thermoplastic material. As described above, the breaking strength is measured according to the breaking strength test of ASTM D380-94 (2012).

[0056] In view of this, it is clear that the hose assemblies of the present invention exhibit tear resistance by linear mass density very desirable for the outer tube and inner tube assemblies and, therefore, are suitable for various applications, especially for garden hoses. The hose assemblies of the present invention offer many advantages and have the ability to achieve high tear strength and at the same time be relatively light, as indicated by the tear strengths by desired linear mass density. If some of the prior art constructions are generally discussed, lighter or thinner hose constructions in some embodiments may have relatively lower tear strengths while more or less heavy or thick hose constructions can achieve tear strengths. older in some embodiments. The inventors have successfully achieved increases in tear strength by developing a relatively light weight per length, as depicted in the parameter of tear strength by linear mass density.

[0057] Hose assemblies are very flexible and can be easily stored in compact spaces where a conventional garden hose does not fit, such as a bucket or similar container. In accordance with the present invention, the hot air welding or sewing process allows manufacturing a hose assembly with less labor, by arranging the automatic insertion of the inner tube into the outer tube that forms around it as part of the process Welding

[0058] The hose assemblies of the present invention are particularly suitable for cold water applications.

[0059] Due to the flexibility and versatility of the hose assemblies, a

fastening system as a hook and loop type, for example VELCRO®, for

5 Check the hose assembly while not in use. You can connect a strap

fastening to one end of the hose by spreading one end of a fastener by a female eyelet of both, so that the fastener can be permanently attached to the hose assembly.

[0060] The hose assemblies of the present invention can also be formed from 10 FDA-approved ingredients for non-food contact applications, such as

for example, RV and the marine drinking water service.

[0061] Examples

[0062] High temperature rupture

[0063] As described in the previous example, garden hose assemblies are

15 underwent a breakage test at 49 ° C (120 ° F), to determine their performance in

high temperature conditions The construction of this invention did not lose so much resistance to breakage at high temperature compared to existing constructions.

[0064] Puncture resistance

[0065] As described above, a pointed penetrator was forced against a pressurized hose assembly 20. The maximum force required to create a leak was recorded. This

construction performed similarly to conventional heavy-duty construction.

[0066] Comparison of weight by length and breakage strength test

[0067] Table 1 presents the comparison of the following hose assemblies from the weight by length and the tear strength test. Breaking strength was measured according to the tear strength test described in this document. The weight per hose length was calculated from a tube section of 61 cm +/- 7.62 cm. The

5 measurement of weight per length excludes the weight of any connector or final coupler. The weight was measured with a digital laboratory weight with visualization of the product weight in grams.

[0068] The following hose assemblies were tested:

 Example 1

 The inner tube included high molecular weight PVC and the outer tube was woven polyester with an 840 denier strand in the warp and weft directions, with a welded seam present along the outer tube.

 Example 2

 The inner tube included high molecular weight PVC and the outer tube was woven polyester with an 840 denier strand in the warp and weft directions, with a welded seam present along the outer tube.

 Comparative Example 1

 Telebrands Corp of Fairfield, NJ

 Comparative Example 2

 Flexable ™ (2016) Flexable Extreme (Sam’s Club) marketed by Tristar Products, Inc. of Fairfield, NJ

 Comparative Example 3

 X-hose ™ (2016) PRO Extreme marketed by National Express, Inc. of Norwalk, CT

 Comparative Example 4

 Teknor Apex for light work (model 8500) from Teknor Apex, Pawtucket, RI

 Comparative Example 5

 Teknor Apex for medium work (model 8535)

 Comparative Example 6

 Teknor Apex Neverkink® Heavy Duty

(model 8692)

Table 1

 Proof

 Comp. Test 1 Comp. Test 2 Comp. Test 3 Comp. Test 4 Comp. Test 5 Comp. Test 6 Test 1 Test 2

 Weight per length (g / m)

 52.4 56.5 55.4 154.2 165.68 237.9 122.3 104.2

 Breaking Strength (kPa)

 2641 2399 2537 1551 *** 2068 *** 2757 *** 6500 * 7374 **

 Breaking strength by linear mass density (kPa * m / g)

 50.4 42.5 45.8 10.1 12.5 11.6 53.1 70.8

* Average of 700 tests

** Average of 2 tests. The hoses tested had no failures and the indicated value 5 represents the highest average pressure achieved before the pressure relief valve was opened.

***Specification

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[0069] As shown in Table 1, the examples of the present invention have relatively high results for the tear strength test and are still more or less light compared to conventional tube garden hoses. Examples 1 and 2 also exhibit a breaking strength by linear mass density and desirable breaking strength results compared to comparative examples, especially in relation to comparative examples 1 to 3, which include elastomeric inner tubes. Comparative examples 4 to 6 include thermoplastic materials. Examples 1 and 2 achieve better results of resistance to breakage by linear mass density and resistance to breakage than said constructions.

[0070] The invention also refers to the following:

[0071] 1. A hose assembly consisting of: an inner tube that includes one or more elastomeric materials and a thermoplastic material, where the inner tube has a first length and a first circumference less than a minimum expansion pressure, where the tube inner can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure; and an outer tube covering the inner tube, where the former has a length and a welded seam along said length of the outer tube, which encompasses the molten material of the outer tube.

[0072] 2. The hose assembly according to point 1, where the outer tube has a first and second end and two sides between the ends, where the two sides are attached to the welded seam and where the second length is as minimum twice as large as the first length.

[0073] 3. The hose assembly according to points 1 or 2, where the outer tube has an inner surface with a circumference and the second circumference of the inner tube is less than or equal to the circumference of the inner surface of the outer tube .

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[0074] 4. The hose assembly according to any of points 1 to 3, where the assembly also includes a male coupler connected to the first ends of the inner tube and the outer tube, and a female coupler connected to the second ends of said tubes.

[0075] 5. The hose assembly according to any of points 1 to 4, where the assembly also includes a sliding coating layer in direct contact with the inner tube.

[0076] 6. The hose assembly according to any of points 1 to 5, where the welded seam has a weld width of 9.5 mm +/- 3.0 mm and where said seam has a weld thickness which is at least 50% larger than the thickness of the outer tube fabric in a welded seamless section.

[0077] 7. The hose assembly according to item 6, where the weld seam weld has a width of 9.5 mm +/- 1.50 mm and where the weld thickness is at least 75% more larger than the thickness of the outer tube material in a welded seamless section.

[0078] 8. The hose assembly according to item 7, where the weld thickness of the welded seam is at least 100% larger than the thickness of the outer tube material in a welded seamless section.

[0079] 9. The hose assembly according to any of points 1 to 8, where the inner tube consists of the thermoplastic material, where said material includes vinyl polychloride and where the inner tube can be expanded to a second larger circumference .

[0080] 10. The hose assembly according to any of points 1 to 8, where the inner tube consists of the elastomeric material and where this tube can be expanded to the second longest length and the second largest circumference.

[0081] 11. A process for producing a hose assembly consisting of: obtaining an inner tube that includes one or more elastomeric materials and a thermoplastic material, where

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the inner tube has a first length and a first circumference of less than a minimum expansion pressure, where the inner tube can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the pressure of the liquid on an inner surface of the inner tube at the minimum or higher expansion pressure; obtain a material that has a first and second end, a first and second side, where the sides are between the ends; wrap the material around the inner tube and splice the first and second side of the material and heat the material to melt and join the first side to the second side along the length of the sides and, thus, form an outer tube with a seam welded along the length of the hose assembly, where during the formation of the outer tube, a section of the inner tube is located inside the outer tube.

[0082] 12. The process according to item 11, including the overlapping step of the first and second sides of the 9.5 mm +/- 3.0 mm fabric.

[0083] 13. The process according to item 12, including the overlapping step of the first and second sides of the 9.5 mm +/- 1.5 mm fabric.

[0084] 14. The process according to any of items 11 to 13, where the heating step includes heating the material with hot air at a temperature between 550 ° C and 750 ° C.

[0085] 15. The process according to any of items 11 to 14, including the step to partially form the material around the inner tube with a folding clamping device and the molding of the material in a round and tubular profile by means of the use of a die.

[0086] 16. The process according to any of points 11 to 15, including also the passage to pass the inner tube and the outer tube through a set of rollers, which force the surfaces of the heated material against each other under pressure , after the heating step.

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[0087] 17. The process according to any of items 11 to 16, wherein the heating step includes heating the material with hot air at a temperature between 100 ° C and 700 ° C.

[0088] 18. The process according to any of items 9 to 17, where the second length is at least twice as long as the first length.

[0089] 19. The process according to any of points 11 to 18, where the inner tube consists of the thermoplastic material, where said material includes vinyl polychloride and where the inner tube can be expanded to a second larger circumference.

[0090] 20. The process according to any of points 11 to 18, where the inner tube consists of the elastomeric material and where this tube can be expanded to the second longest length and the second largest circumference.

[0091] 21. A hose assembly consisting of: an inner tube consisting of one or more elastomeric materials and a thermoplastic material, where this tube has a first length and a first circumference less than a minimum expansion pressure, where the tube interior can be expanded to one or more of a) a second larger length and b) a second larger circumference after application of the liquid pressure on an inner surface of the inner tube to the minimum or higher expansion pressure; an outer tube covering the inner tube, where the first is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; and where the inner and outer tubes have a total weight between 74.4 g / m and 163.68 g / m, and a breaking strength between 1,379 kPa and 10,342 kPa measured in accordance with ASTM D380-94 (2012 ).

[0092] 22. The hose assembly according to item 21, where the inner tube and the outer tube have a total weight between 89.28 g / m and 148.80 g / m.

[0093] 23. The hose assembly according to any of points 21 and 22, where the inner tube and the outer tube have a total weight between 96.72 g / m and 133.92 g / m.

[0094] 24. The hose assembly according to any of points 21 to 23, where the breaking strength is between 2,758 kPa and 8,963 kPa.

[0095] 25. The hose assembly according to any of points 21 to 24, where the breaking strength is between 4,137 kPa and 8,274 kPa.

5 [0096] 26. The hose assembly according to any of items 21 to 25, where the

outer tube consists of a textile material that is one or more braided materials, woven or nonwoven.

[0097] 27. The hose assembly according to any of points 21 to 25, where the outer tube is formed from a film, a fiber reinforced film or a sheet.

10 [0098] 28. The hose assembly according to any of items 21 to 27, where the

Second length is at least twice as long as the first length.

[0099] 29. The hose assembly according to any of points 21 to 28, where the second length is between 2 to 4 times greater than the first length.

[0100] 30. The hose assembly according to any of points 21 to 29, where the end connectors include a male coupler connected to the first ends of the tube

inner and outer and a female coupler connected to the second ends of the inner and outer tube, where both tubes together have a resistance to breakage by linear mass density between 18.53 kPa ^ m / g to 63.18 kPa ^ m / g.

[0101] 31. The hose assembly according to any of points 21 to 27 or 30, 20 where the inner tube consists of thermoplastic material.

[0102] 32. The hose assembly according to item 31, where the thermoplastic material includes polyvinylchloride and where the inner tube can be expanded to a second larger circumference.

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[0103] 33. The hose assembly according to any of points 21 to 30, where the inner tube consists of the elastomeric material and where this tube can be expanded to the second longest length and the second largest circumference.

[0104] 34. The hose assembly according to any of points 21 to 33, wherein the inner tube includes a sliding lining layer in direct contact with said tube.

[0105] 35. The hose assembly according to any of points 21 to 34, where the inner tube has a wall thickness of approximately 1.0 mm to 2.0 mm, measured in radial direction in a counter position.

[0106] 36. The hose assembly according to any of points 21 to 35, where the inner tube has a wall thickness of approximately 1.40 mm to 1.65 mm, measured in radial direction in a counter position.

[0107] 37. The hose assembly according to any of points 21 to 36, where the outer tube has a length and seam welded along the length of the outer tube and said seam consists of molten material of this tube .

[0108] 38. The hose assembly according to item 37, where the welded seam has a welding width of 9.5 mm +/- 1.5 mm, measured perpendicular to the length.

[0109] 39. A hose assembly consisting of: an inner tube consisting of an elastomeric material and a thermoplastic material, where this tube has a first length and a first circumference less than a minimum expansion pressure, where the inner tube is it can expand to one or more of a) a second larger length and b) a second larger circumference after the application of the liquid pressure on an inner surface of the inner tube to the minimum or higher expansion pressure; an outer tube covering the inner tube, where the first is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; and where the inner and outer tubes as a whole have a resistance to breakage by linear mass density between 52 kPa ^ m / g at 100

kPa ^ m / g, where said resistance is measured in accordance with ASTM D380-94 (2012); and where the inner and outer tube have a total weight between 74.4 g / m and 163.68 g / m.

[0110] 40. The hose assembly according to item 39, where the inner tube and the outer tube have a total weight between 74.4 g / m and 163.68 g / m and a breaking strength between

5 1,379 and 10,342 kPa in accordance with ASTM D380-94 (2012).

[0111] 41. The hose assembly according to any of points 39 and 40, where the resistance to breakage by linear mass density is between 52 kPa ^ m / g and 95 kPa ^ m / g.

[0112] 42. The hose assembly according to any of points 39 to 41, where the resistance to breakage by linear mass density is between 52 kPa ^ m / g and 85 kPa ^ m / g.

10 [0113] 43. The hose assembly according to any of items 39 to 42, where the

outer tube consists of a textile material that is one or more braided materials, woven or nonwoven.

[0114] 44. The hose assembly according to any of points 39 to 43, where the second length is at least twice as long as the first length.

15 [0115] 45. The hose assembly according to any of items 39 to 44, where the

Second length is between 2 to 4 times greater than the first length.

[0116] 46. The hose assembly according to any of points 39 to 45, where the end connectors include a male coupler connected to the first ends of the inner tube and the outer tube, and a female coupler connected to the second ends of sayings

20 tubes

[0117] 47. The hose assembly according to any of points 39 to 43 or 46, where the inner tube consists of thermoplastic material.

[0118] 48. The hose assembly according to any of points 39 to 46, where the inner tube consists of the elastomeric material and where this tube can be expanded to the second longest length and the second largest circumference.

[0119] 49. The hose assembly according to any of points 39 to 48, where the inner tube has a wall thickness of approximately 1.2 mm to 1.8 mm, measured in

radial direction in a counter position.

[0120] 50. The hose assembly according to any of points 39 to 49, where the outer tube has a length and seam welded along the length of the outer tube and said seam consists of molten material of this tube , and where the seam has a width of

10 welding of 9.5 mm +/- 1.5 mm, measured perpendicular to the length.

[0121] Although, according to patent statutes the best manner and preferred realization was established, the scope of the invention is not limited thereto, but by the scope of the appended claims.

Claims (38)

1. Hose assembly consisting of: an inner tube that includes one or more elastomeric materials and a thermoplastic material, where the inner tube has a first length and a first circumference 5 less than a minimum expansion pressure, where the inner tube can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure; Y an outer tube covering the inner tube, where the first has a length and a welded seam along the length of the outer tube and said seam consists of molten material of this tube. 2. Hose assembly according to claim 1, wherein the outer tube has a first and second end and two sides between the ends, where the two sides are attached to the welded seam and where the second length is at least two more times. big than the 15 first length. 3. Hose assembly according to claims 1 or 2, wherein the outer tube has an inner surface with a circumference and the second circumference of the inner tube is less than or equal to the circumference of the inner surface of the outer tube. 4. Hose assembly according to any one of claims 1 to 3, wherein the assembly also includes a male coupler connected to the first ends of the tube inner and outer tube, and a female coupler connected to the second ends of said tubes. 5 10 fifteen twenty 25 5. Hose assembly according to any one of claims 1 to 4, wherein the assembly further includes a sliding coating layer in direct contact with the inner tube. 6. Hose assembly according to any one of claims 1 to 5, wherein the welded seam has a weld width of 9.5 mm +/- 3.0 mm and wherein said seam has a weld thickness that is at least 50% larger than the thickness of the outer tube fabric in a welded seamless section. 7. Hose assembly according to claim 6, where the weld seam weld has a width of 9.5 mm +/- 1.50 mm and where the weld thickness is at least 75% larger than the thickness of the outer tube material in a welded seamless section. 8. Hose assembly according to claim 7, wherein the weld thickness of the welded seam is at least 100% larger than the thickness of the outer tube material in a welded seamless section. 9. Hose assembly according to any of claims 1 to 8, wherein the inner tube consists of the thermoplastic material, wherein said material includes vinyl polychloride and where the inner tube can be expanded to a second larger circumference. 10. Hose assembly according to any one of claims 1 to 8, wherein the inner tube consists of the elastomeric material and where this tube can be expanded to the second longest length and the second largest circumference. 11. Hose assembly consisting of: an inner tube that includes one or more elastomeric materials and a thermoplastic material, where the inner tube has a first length and a first circumference less than a minimum expansion pressure, where the inner tube can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure; an outer tube covering the inner tube, where the first is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; Y where the inner tube and the outer tube have a total weight between 74.4 g / m and 163.68 g / m and a breaking strength between 1,379 and 10,342 kPa, measured in accordance with ASTM D380-94 (2012) ). 12. Hose assembly according to claim 11, wherein the inner tube and the outer tube have a total weight between 89.28 g / m and 148.80 g / m. 13. Hose assembly according to any of claims 11 and 12, wherein the inner tube and the outer tube have a total weight between 96.72 g / m and 133.92 g / m. 10 14. Hose assembly according to any of claims 11 to 13, wherein the Breaking strength is between 2,758 kPa and 8,963 kPa. 15. Hose assembly according to any of claims 11 to 14, wherein the breaking strength is between 4,137 kPa and 8,274 kPa. 16. Hose assembly according to any of claims 11 to 15, wherein the outer tube consists of a textile material that is one or more braided materials, woven or not tissues. 17. Hose assembly according to any of claims 11 to 15, wherein the outer tube is formed from a film, a fiber reinforced film or a sheet. 18. Hose assembly according to any of claims 11 to 17, wherein the second length is at least twice as long as the first length. 19. Hose assembly according to any of claims 11 to 18, wherein the second length is between 2 to 4 times greater than the first length. 20. Hose assembly according to any of claims 11 to 19, wherein the end connectors include a male coupler connected to the first ends of the inner and outer tube and a female coupler connected to the second ends of the inner and outer tube, wherein both tubes together have a resistance to breakage by density of 5 linear mass between 18.53 kPa ^ m / g at 63.18 kPa ^ m / g. 21. Hose assembly according to any of claims 11 to 17 or 20, wherein the inner tube consists of thermoplastic material. 22. Hose assembly according to claim 21, wherein the thermoplastic material includes vinyl polychloride and where the inner tube can be expanded to a second 10 largest circumference. 23. Hose assembly according to any of claims 11 to 20, wherein the inner tube consists of the elastomeric material and where this tube can be expanded to the second longer length and the second largest circumference. 24. Hose assembly according to any of claims 11 to 23, wherein the inner tube includes a sliding coating layer in direct contact with said tube. 25. Hose assembly according to any of claims 11 to 24, wherein the inner tube has a wall thickness of approximately 1.0 mm to 2.0 mm, measured in radial direction in a counter position. 26. Hose assembly according to any of claims 11 to 25, wherein the inner tube has a wall thickness of approximately 1.40 mm to 1.65 mm, measured in radial direction in a counter position. 27. Hose assembly according to any of claims 11 to 26, wherein the outer tube has a length and seam welded along the length of the outer tube and said seam consists of molten material of this tube. 28. Hose assembly according to claim 27, wherein the welded seam has a welding width of 9.5 mm +/- 1.5 mm, measured perpendicular to the length. 29. Hose assembly consisting of: an inner tube that includes one or more elastomeric materials and a thermoplastic material 5, where the inner tube has a first length and a first circumference less than a minimum expansion pressure, where the inner tube can be expanded to one or more of a) a second longer length and b) a second longer circumference after the application of the liquid pressure on an inner surface of the inner tube at the minimum or higher expansion pressure; 10 an outer tube that covers the inner tube, where the first one is not attached, connected or spliced to the inner tube between the end couplers of the hose assembly; Y where the inner and outer tubes as a whole have a resistance to breakage by linear mass density of between 52 kPa ^ m / g and 100 kPa ^ m / g, where said resistance is measured in accordance with ASTM D380-94 ( 2012), and where the inner and outer tube 15 have a total weight between 74.4 g / m and 163.68 g / m. 30. Hose assembly according to claim 29, wherein the inner tube and the outer tube have a total weight between 74.4 g / m and 163.68 g / m and a breaking strength between 1,379 and 10,342 kPa according with ASTM D380-94 (2012). 31. Hose assembly according to any of claims 29 and 30, wherein the resistance to breakage by linear mass density is between 52 kPa ^ m / g and 95 kPa ^ m / g. 32. Hose assembly according to any one of claims 29 to 31, wherein the breaking strength by linear mass density is between 52 kPa ^ m / g and 85 kPa ^ m / g. 33. Hose assembly according to any of claims 29 to 32, wherein the outer tube consists of a textile material that is one or more braided, woven or nonwoven materials. 34. Hose assembly according to any of claims 29 to 33, wherein the second length is at least twice as long as the first length. 35. Hose assembly according to any of claims 29 to 34, wherein the second length is between 2 to 4 times greater than the first length. 36. Hose assembly according to any one of claims 29 to 35, wherein the end connectors include a male coupler connected to the first ends of the tube 10 inner and outer tube, and a female coupler connected to the second ends of said tubes. 37. Hose assembly according to any of claims 29 to 33 or 46, wherein the inner tube consists of thermoplastic material. 38. Hose assembly according to any one of claims 29 to 36, wherein the inner tube consists of the elastomeric material and where this tube can be expanded to the second longer length and the second largest circumference. 39. Hose assembly according to any of claims 29 to 38, wherein the inner tube has a wall thickness of approximately 1.2 mm to 1.8 mm, measured radially in a counter position. 20 40. Hose assembly according to any of claims 29 to 39, wherein the outer tube has a length and seam welded along the length of the outer tube and said seam consists of molten material of this tube, and where the seam has a welding width of 9.5 mm +/- 1.5 mm , measured perpendicular to the length.