NZ603211B - Expandable and contractible hose - Google Patents

Abstract

603211 A hose (10) which automatically extends longitudinally and expands laterally upon the application of a fluid pressure is disclosed. The hose can automatically extend longitudinally up to six times its unexpanded or contracted length in an extended condition. Upon release of the fluid pressure within the hose, the hose will automatically contract to a contracted condition. The hose includes an inner tube (14) made from an elastic material and an outer tube (12) made from a nonelastic material. The inner tube is positioned concentrically within the outer tube. The outer tube is secured to the inner tube only at a first end of the inner and outer tubes and at a second end of the inner and outer tubes. A first coupler (18) is secured to a first end of the inner and outer tubes. A second coupler (16) is secured to a second end of the inner and outer tubes. The first coupler may be a female coupler and the second coupler may be a male coupler. The second coupler couples the hose to a water flow restrictor, such as a nozzle or sprayer, which allows water under pressure to discharge while also providing a fluid back pressure within the hose. In the extended condition the inner tube is stretched such that the wall thickness of the inner tube is decreased. ure within the hose, the hose will automatically contract to a contracted condition. The hose includes an inner tube (14) made from an elastic material and an outer tube (12) made from a nonelastic material. The inner tube is positioned concentrically within the outer tube. The outer tube is secured to the inner tube only at a first end of the inner and outer tubes and at a second end of the inner and outer tubes. A first coupler (18) is secured to a first end of the inner and outer tubes. A second coupler (16) is secured to a second end of the inner and outer tubes. The first coupler may be a female coupler and the second coupler may be a male coupler. The second coupler couples the hose to a water flow restrictor, such as a nozzle or sprayer, which allows water under pressure to discharge while also providing a fluid back pressure within the hose. In the extended condition the inner tube is stretched such that the wall thickness of the inner tube is decreased.

Description

EXPANDABLE AND CONTRACTIBLE HOSE FIELD OF THE ION The present invention s to a hose for carrying water. In particular, a hose that automatically contracts to a contracted state when there is no pressurized water within the hose and automatically expands to an extended state when pressurized water is introduced into the hose. In the contracted state the hose is relatively easy to store and easy to handle because of its relative short length and its relative light weight and in the extended state the hose can be d to where ever the water is required The hose is comprised of an elastic inner tube and a separate and ct non-elastic outer tube positioned around the circumference of the inner tube and attached and connected to the inner tube only at both ends and is separated, unattached unbonded and unconnected from the inner tube along the entire length of the hose n the first end and the second end.

BACKGROUND OF THE INVENTION Hoses which are used to carry various fluids are known in the art. One of the problems encountered with these hoses is storage of the hose when it is not being used to transport the fluids. While current hoses are flexible and can be d around a cylinder or drum for storage and transport, the length and width of the hose cannot be reduced. Another problem encountered with wrapped or coiled hoses is that they tend to kink when unwrapped or uncoiled. This problem is usually encountered by the average homeowner when using a garden hose to water their grass, plants, or wash their vehicles.

Firefighters have a on to the kinking problem. The hoses that they use collapse into a relatively flat state when the fluids are removed from the hoses. The hoses are then stored in layers which are formed by the hose being laid back and forth upon itself. When the firefighters use the hoses stored like this, they only have to pull at one end of the hose and it unfolds in a straight line without kinking. This is not a practical solution to a homeowner’s problem of hose storage because s hoses are relatively small in diameter, compared to fire hoses, and almost all garden hoses do not collapse into a flat condition when the water is emptied from the hose. Another problem with hoses known in the art is that they are heavy bulky and difficult to unravel when lying on the ground and also difficult to handle and drag around to the place where the fluid is needed both when they are filled with a fluid and equally as difficult to handle and drag around when they are empty and needing to be returned to there original place of storage. Also, if the user does not have a device for winding the hose then he must try to place the hose on the ground in a way as to not entangle the hose within itself because if the hose does become entangled within itself this makes it difficult and frustrating to unravel the hose the next time the hose is used.

Therefore, what is needed in the art is a hose that can be automatically contracted and reduced in length when not in use, and automatically expanded and extended to a length which is cal for use, and tically returned to the reduced length when not in use.

Also, a hose which is vely light in weight and will not kink when taken from storage and filled with fluid for use. Alternatively, there is a need to at least provide the public with a useful DESCRIPTION OF THE PRIOR ART [0004a] Reference to any prior art in this ication is not, and should not be taken as, an acknowledgement or any form of suggestion that it forms part of the common general knowledge in the field of endeavor in any country in the world.

R.H. Vansickle et al., U.S. Patent No. 368 discloses a flexible hose comprising an elastomer liner tube surrounded by a plurality of layers of metallic wire reinforcement and an external cover, the inner reinforcing 15 layer comprising a single thickness of helically wound wires interlaced by textile yarns with the wires lying in a smooth cylindrical (followed by page 3) configuration and all interlacing crimp being in the textile yarns. One or more onal reinforcing layers of wire are wound helically without 20 interlacing textile yarns and with an insulating layer of mer between each layer of reinforcement. A layer of braided wire may be provided over the other reinforcing layers and beneath the cover.

J.C. Hamrick, U.S. Patent No.3,520,725 discloses a vacuum cleaning system in which a pliable but flexurally rigid vacuum hose normally stored within a suction conduit has little or no stretchability when the hose is being moved to extended or retracted stored condition in the conduit to facilitate movement of the hose through bends in the conduit, and wherein a piston on the hose 20 is deformable so as to be moved past an abutment carried by an outlet receptacle on the outer end of the conduit, and wherein interengagement between the piston and the abutment ise limits extension or tion of the hose, as the case may be, relative to the conduit.

Buhrmann et al., U.S. Patent No. 3,682,202 discloses an improved collapse— ant, reinforced hose of flexible polymeric material ing a semi-rigid generally circumferentially disposed supporting structure which es preferably a single layer of textile fabric reinforcement, the major portion ofwhich is composed of treated polyester or nylon fibers.

The polyester or nylon fibers are treated with an organic polyisocyanate and preferably a solution of at least 2 percent organic polyisocyanate in a non~reactive t. The hose has substantially improved bursting strength and ance to vacuum collapse without the need of additional support, such as a metal wire insert. The invention is particularly useful for flexible radiator hoses used in automotive vehicle cooling systems.

Sullivan, U.S. Patent No. 4,009,734 ses a e self-retracting coiled tubing having desirable recoil strength and elastic memory is described. The coiled tubing is adaptable especially as a etracting air tube for transmitting fluids under pressure to pneumatic equipment. The coiled tubing comprises an extruded seamless plastic tube prepared by extruding a mixture comprising a ally extended polyester and from about 10% to about 50% of a polybutylene terephthalate polymer.

Logan, US. Patent No. 4,091,063 discloses a molded hose construction and method of making same is provided wherein such hose construction has y spaced convolutions and a controlled flexibility defined by alternating crests and troughs, and the hose construction has an meric inner layer, an elastomeric outer layer, and an intermediate rcing layer made of a fabric material having a substantial open space between cooperating threads defining the fabric material; and the layers are bonded as a unitary structure by strike- through columns of elastomeric material extending through said substantial space with the alternating crests and troughs having a controlled wall thickness throughout which assures the controlled flexibility, and the crests and troughs having been formed with the elastomeric layers in a semi-cured condition to assure said controlled wall thickness thereof.

Home, US. Patent No. 908 discloses a plastic hose is sed in which a reinforcement layer is made from a combination of yarns and monofilaments to provide stereo interstices where mechanical bonds between the reinforcement and its adjacent element of the hose can be established.

Piccoli et a1., U. S. Patent No. 4,553,568 discloses a flexible hose d to regain its original shape after crushing due to a novel braided-spiral reinforcement layer containing one braid member which is a vely stiff, uncrimped monofilament and a second braid member which is a flexible textile material crimped around the stiff monofilament at each contact point in the braided spiral layer. The braided spiral imparts improved crush and kink resistance to the hose structure. This hose is particularly useful as a gasoline pump dispensing hose which is subject to frequent crushing by vehicle wheels during service.

Champleboux, US. Patent No. 4,895,185 discloses a device with flexible hose, particularly for an expandable packer, wherein hose is reinforced by armature layers made of flexible cables disposed helically and is attached at least at one end by compression of said layers against rigid pieces, characterized by the suppofiing elements and gripping elements, which are coaxial, having non-adhesive conical compression surfaces which diverge toward the end and by at least one wedge provided with slits being driven between reinforcing layers to ensure compression.

Walton et al., US. Patent No. 4,989,643 discloses a high performance composite hose having enhanced durability, reliability and ity for use in high re, high ature and/or ional environments such as harged truck, bus, bile, marine and generating engines. The composite hose comprises one or more plies of balanced fabric having a high performance elastomer d to the inner and outer surfaces of each fabric ply- Mercer, US. Patent No. 5,023,959 discloses a systen for extending and retractng the waste hose for a waste disposal system that is lly found on recreational vehicles and includes power or crank-driven hose extender means for extending the collapsible hose from its collapsed mode stored on—board the recreational vehicle, to its ed configuration which it is used for dumping waste from an RV holding tank into an inlet of an RV waste dump station.

Whaley, US. Patent No. 5,036,890 discloses a device which may be inserted into the hydrant end of a conventional garden or water hose for the purpose of reinforcing that portion of the hose which is apt to be kinked or broken due to short bending of the hose at the hydrant end by tension imposed on the hose during use. The reinforcement device comprises a length of coiled ent material having a resilient gasket mounted on one end thereof which may be inserted or removed from a hose at will.

LoJacono, Jr. et al., US. Patent No. 5,246,254 discloses an inking device used in ction with a garden variety water hose, wherein the device includes a housing defined by a tubular body having a coupling member bly mounted to the r body so as to be connected to a water faucet, wherein the opposite end of the r body is threaded so as to connect to a garden—type hose, and finther includes an elongated flexible nylon cable that is fixedly secured to a boss member formed in the internal wall of the tubular body, whereby the cable is formed with a length so as to be readily positioned within the full length of the hose.

Igarashi US. Patent No. 5,264,262 discloses a refrigerant transporting hose having a laminar structure including an inner tube consisting of at least one layer, an outer tube disposed radially outwardly of and coaxially with the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes. The inner tube includes a resin layer formed of a resin composition.

Mezzalira, US. Patent No. 5,477,888 discloses a hose (10) which comprises at least one tubular layer (3) of plastic or rubber material, a mesh-network (4) of the chain type presenting mesh lines (5) and mesh rows (6) having a tubular shape being wound on the external surface of said inner layer, a le external layer (7), and is characterized in that said mesh rows are slanted in relation to the longitudinal axis of the hose. According to a preferred ment the lines (5) of said meshes are slanted in relation to the longitudinal axis Y of the hose, following a direction opposite to the direction of the mesh rows (6).

Kanao, US. Patent No. 5,555,915 discloses a cleaner hose includes a hose body, connection cylinders to be connected to a cleaner operating pipe and a cleaner body, respectively, which are connected to ends of the hose body, respectively, and a reinforcement wire material wound in the hose body spirally and continuously over the whole length of hose body. The reinforcement wire material is shaped like a steeply slanted spiral in a predetermined length portion near one of or both of the ends of the hose body so that adjacent spiral portions of the reinforcement wire material are close to each other while a hose wall of the hose body is loosened toward the inner circumferential e. On the other hand, the reinforcement wire material is shaped like a gently slanted spiral in an ediate portion except the one of or both of the ends of the hose body so that adjacent spiral portions of the rcement wire material are separated from each other in the direction of a pipe axis.

Grieve et al., US. Patent No. 107 discloses a retractable conduit formed from a sheet of memory—set polyester. To manufacture the memory-set strip, the polyester sheet is wound into a d coiled position. It is then heated and cooled in a manner to memory-set the sheet in a coiled form. After this process the sheet of polyester will automatically return to the coiled condition after it has been uncoiled. In one form, suitable as a splash block, the distal end of the ter sheet is wider than the end attachable to a downspout. In another form the polyester sheet is sheathed in an ted polyethylene tube, to form a retractable hose. In a preferred form, the distal end of the hose is supported on a spool which will roll along the ground as the hose is wound and unwound to further ensure that the hose retracts properly. The tube can also be provided with holes to act as a sprinkler if desired.

Carter, US. Patent No. 5,816,622 discloses a protective sleeve for a garden hose includes a protective shell section having a lly tubular body with an inner bore shaped for receiving a coupling of the garden hose snugly therein. A flexible strain relief section is releasably attached to the shell n n the flexible strain relief section has a generally tubular body. A locking member of the strain relief section releasably attaches the strain relief section to the shell section. The locking member is receivable within an opening formed in the body of the shell section. The locking member is resiliently e from a relaxed condition in which it extends through the opening and engages the body of the shell section for preventing axial nt of the strain relief section away from the shell section, to an inwardly flexed on in Which the locking member flexes inwardly out of the opening and disengages the body of the shell n for allowing relative axial movement between the shell and strain relief sections. The strain relief section has an outer e that defines a gripping surface for facilitating the attachment of the garden hose with another garden hose.

Horst et a1., U.S. Patent No. 5,894,866 discloses a garden hose assembly is provided and comprises holding means comprising at least a portion of such hose assembly with the holding means and portion being adapted to be coiled around an associated support for holding the portion at a desired position to enable use of the hose assembly in a hands—free manner.

Fujimoto, U.S. Patent No. 6,024,132 discloses a flexible hose comprises a bellows hose wall 1 composed of an inner wall 2 and an outer wall 3 each made of a soft resin and a spiral hard reinforcement 4 interposed there between. As the hose contracts, a spiral groove 7 is formed inside of the hose. The inner wall 2 is not partially bonded or fused with the outer wall 3 and the hard spiral reinforcement 4 to form unbonded sites or fragments 8. As the hose cts, the unbonded fragments 8 are separated from the outer wall 3 and the spiral hard ement 4 and move to the inward direction of the hose, and close the spiral groove 7. ore, even a fluid flows to any udinal direction, the flexible hose s a flow resistance.

Akedo et al., US. Patent No. 6,024,134 discloses a ted tape comprising a main layer of a polyester—series thermoplastic polyurethane resin and a covering layer formed of a soft vinyl chloride resin fused with at least one surface of the main layer is spirally wound, and its adjacent side edges are bonded each other to form a hose wall.

Wells et al., US. Patent No. 6,098,666 discloses a tubing assembly for conveying fluid under pressure such as from a source of air pressure in a vehicle to an ke system of the vehicle. The assembly includes a flexible first and second tubing member, each having an outer surface and extending axially from a forward distal end to a rearward distal end.

Ericksen, US. Patent No. 6,568,610 discloses a flexible water spray wand for tion to a standard garden hose, having a housing connectable at a lower end to the garden hose and at an upper end to a flexible tube assembly connected at an opposite end to a spray nozzle. The pistol grip housing includes a water flow control valve such as a trigger mechanism operatively connected to a water valve for controlling the flow of water from the nozzle of the wand.

Ragner et al., US. Patent No. 527 discloses a linearly self—actuated hose for use in transporting fluids (liquids, gases, solid les, and combinations of these three). Hoses (30) and (30b) have a biasing spring (36) extends along the full length, and can comprise single or multiple springs and/or multiple diameter spring coils. Spring (3 6) is covered with hose cover material (32) on the outside and hose cover material (34) on the inside to form a sealed hose and are bowed inward or outward radially between the individual spring coils depending on the intended use of hose (30) or (30b), respectfully to give the cover materials room to move out of the way when the hose retracts and the coils of spring (36) are forced close together.

Weyker, U.S. Patent No. 6,955,189 discloses a garden hose assembly includes an elongated and flexible tubular member that includes an open first end, an open second end and a peripheral wall extending between the first and second open ends. A cross-section taken traversely to a longitudinal axis of the r member has a generally oblong shape when the r member is filled with a fluid and a substantially flattened shape when the r member is not filled with a fluid. The tubular member has an outer e d a fluorescent color. A threaded female coupler is fluidly coupled to the first end and a threaded male coupler is fluidly coupled to the second end.

Ragner, U.S. Patent No. 7,549,448 discloses a linearly self-actuated hose for use in transporting fluids (liquids, gases, solid particles, and combinations of these three). Hose (30) has a biasing spring (36) that extends along its full length, and can comprise single or multiple springs and/or multiple diameter spring coils. Spring (36) is covered with hose cover material (32) on the outside and hose cover material (34) on the inside to form a sealed hose and are bowed inward or d radially between the individual spring coils depending on the intended use of hose (30) to give the cover als room to move out of the way when the hose retracts and the coils of spring (36) are forced close together.

SUMMARY OF THE INVENTION A water hose which automatically expands longitudinally and automatically expands laterally upon the application of water pressure within the hose is disclosed. The hose can preferably automatically expand longitudinally up to six times its unexpanded or contracted length and can ably automatically expand laterally up to six times its unexpanded width.

Upon e of water pressure within the hose, the hose will preferably automatically contract to a contracted condition. The hose preferably includes an expandable inner tube made from an elastic material and a separate, distinct outer tube made from a non-elastic material, positioned around the outer circumference and length of the inner tube and secured to the inner tube only at the first and second end and is unattached, unconnected, unbonded, and unsecured to the inner tube along the entire length of the inner tube n the first end and the second end and is able to move freely with respect to the inner tube along the entire length of the inner tube between the first end and the second end.

Accordingly, it is an objective of the present invention to provide a hose that automatically expands longitudinally and automatically expands laterally upon the application of water re within the hose.

It is a further, ative objective of the present invention to provide a hose that automatically contracts upon release of a fluid pressure within the hose. The contracted length may be up to six times shorter that an expanded length.

It is yet r, alternative ive of the present invention to provide a hose that is relatively light compared to a non-expanding/non-contracting hose.

It is a still further, alternative objective of the present invention to provide a hose that will not kink or become entangled upon itself when in use.

It is a still further, ative objective of the present invention to provide a hose including indicia, such as words, on an outer tube or sleeve.

It is a still further, alternative objective of the present invention to provide a hose that can be readily coupled and uncoupled to a source of water such as a faucet on a house.

It is a still further, alternative objective to at least provide the public with a useful .

Other objects and advantages of this invention will become nt from the following description taken in conjunction with any accompanying drawings wherein are set forth, by way of illustration and example, certain embodiments of this invention. Any drawings contained herein constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof.

BRIEF PTION OF THE FIGURES FIGURE 1 is a udinal side view of an embodiment of the present invention in a contracted position; FIGURE 2 is a cross section view taken along line 2-2 in Fig. 1; FIGURE 3 is a longitudinal view of an embodiment of the present invention in an expanded position; FIGURE 4 is a cross sectional view taken along line 4-4 in Fig. 3; FIGURE 5 is a cross sectional, perspective view of a section of the embodiment of Fig. 3 taken along line 4-4 in Fig. 3; FIGURE 6 is a cross sectional, perspective view of a section of the embodiment of Fig. 1 taken along line 2-2 in Fig. 1; FIGURE 7 is a ctive view of an embodiment of a male coupler d to an end of a hose when the hose is in its extended ion; and FIGURE 8 is a perspective view of an embodiment of a female coupler secured to an end of a hose when the hose is in its contracted condition.

DETAILED DESCRIPTION OF THE INVENTION While the t invention is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be bed a presently preferred, albeit not limiting, embodiment with the understanding that the present disclosure is to be considered an exemplification of the present invention and is not intended to limit the invention to the specific embodiments illustrated.

Figures 1-8, which are now referenced, illustrate embodiments of the present ion and the manner in which it may be led. Figs. 1 and 3 illustrate a preferred embodiment of the automatically expandable and contractible hose of the present invention. The hose is self-expanding upon application of water pressure and increased water volume within the hose. The hose is also self-contracting upon release of water pressure and water volume from within the hose. The hose 10 is composed of two separate and distinct tubes 12 and 14. The inner tube 14 is formed from a al that is elastic with an elongation ratio of up to 6 to 1 and can expand up to 4 to 6 times its relaxed or unexpanded length when pressurized water is introduced into the elastic inner tube 14. A preferred material for the inner tube 14 is natural latex rubber. However, other synthetic materials, which have elastic properties similar to natural latex rubber, can also be used. The elastic inner tube 14 expands radially outwardly or laterally, with t to its length. The radial expansion of the inner tube 14 is constrained by the maximum diameter of the non-elastic outer tube 12. The outer tube 12 is formed from a nonelastic , vely soft, bendable, tubular webbing material. The preferred materials used to form the non-elastic outer tube 12 are braided or woven nylon, polyester, or polypropylene. Other braided or woven materials can also be employed to form the outer tube 12. The requirements of the outer tube 12 material are that it be soft, bendable, non-elastic, and strong enough to withstand internal pressures of up to 250 pounds per square inch, (psi).

The hose 10 also includes a female coupler 18 at a first end thereof and a male coupler 16 at a second end thereof. The male coupler 16 includes a threaded portion 20, a midportion 22, and a portion 24 onto which are secured the inner tube 14, the outer tube 12 and an expansion restrictor sleeve 26. The inner tube 14, the outer tube 12, and the ion restrictor sleeve 26 are secure to the male coupler as will be described herein after.

The female coupler 18 includes a threaded portion 28 on the interior of the female coupler, Figs. 1, 3, and 8. The threaded n 28 is constructed to receive the male threads 20 and enable coupling of one hose to r. The threaded portion 28 is also constructed to couple to a faucet or a water outlet on the exterior or interior of a house or residence. Most water s on homes or residences are provided with a standard size male coupler or fitting. Most conventional garden hoses or other hoses are provided with a standard size female coupler or fitting which will engage and couple the hose 10 to the faucet or water . The inner tube 14, the outer tube 12, and the expansion restrictor sleeve 27 are secure to the female coupler as will be bed herein after. In the preferred embodiment the female coupler also includes a washer 29 which helps to provide a fluid tight connection between the male and female couplers or any other male or female coupler. During assembly, the non-elastic outer tube 12 is attached and connected to the inner tube 14 only at the first end and second end by the male coupler 16 and the female r 18, The outer tube 12 is unattached, unconnected, ed, and unsecured to the elastic inner tube 14 along the entire length of the inner tube 14 between the first end and the second end and thus the outer tube 14 is able to move freely with respect to the inner tube along the entire length of the inner tube 14 when the hose expands or contracts.

The water hose 10 is illustrated in its contracted condition in Figs. 1, 2, 6, and 8. In this condition, the inner tube 14, which is elastic, is in a relaxed contracted condition wherein there are no forces being applied to the inner tube 14 to expand or stretch it. Also it should be noted that the outer tube 12 will not be in t with the inner tube 14 when the hose is in this contracted condition. There will be a space 15 between the inner tube 14 and the outer tube 12 (Fig. 6). As illustrated in Fig. 6, the thickness of the wall of the inner tube 14, in the contracted position, is relatively large ed to the thickness of the inner tube 14, in the expanded position, Fig. 5. The expansion of the elastic inner tube 14 laterally, is the result of an increase in the pressure and volume of water within the inner tube 14. This increase in water pressure and volume in the inner tube 14 also results in the expansion of the length of the elastic inner tube 14. The expansion of the inner tube 14, both laterally and longitudinally, results in a decrease in the wall thickness of the inner tube, an increase in the diameter of the inner tube thus increasing the volume of water that can flow through the inner tube 14. This decrease in wall thickness is clearly illustrated in Fig. 5, n the inside er of the inner tube has been expanded and extended because of an increase of water pressure and volume within the inner tube 14.

The outer tube 12 is preferably ucted of a non-elastic, soft tubular webbing. The webbing is made from a strong braided or woven nylon, polyester, or polypropylene fabric or any other tubular braided of woven, non-elastic fabric which can withstand an al re of up to 250 psi. In the expanded or extended condition of the water hose 10 as shown in Figs. 3-5, the inner tube 14 is expanded or stretched. In this expanded condition the non-elastic outer tube 12 constrains the lateral expansion of inner tube 14, as illustrated in Figs. 3 and 5. The outer tube 12 is also taunt, smooth, and relatively flat along its length in this extended condition, note Figs. 3 and 5. Since the outer tube 12 will not expand lly or longitudinally, the actual length and width of the outer tube 12 determines the maximum length and maximum width of the hose 10 in its expanded condition. Thus the diameter and length of the outer tube 12 determines the diameter and length of the water hose upon the application of water pressure to the interior of the elastic inner tube 14. This er and length of the non-elastic outer tube is the final diameter and the final length of the hose 10 when it is in its expanded condition and in use to ort or deliver water.

In a preferred ment of the present invention the water hose 10 automatically expands 4 to 6 times its contracted length. Thus, a ten foot hose in a contracted condition would automatically expand to 40 to 60 feet when water under pressure is supplied to the interior of the inner tube 12 of the hose. The water re within the hose is accomplished by introducing water under pressure into one end of the hose and restricting the flow of the fluid out of the other end of the hose. For example, when the hose 10 is utilized as a garden hose around a house, coupler 18 is secure to a faucet or water outlet on an exterior wall of the house.

The faucet is turned on or opened so that water under pressure can now enter the hose 10. A relatively normal pressure for water within a house is 60 psi. However, the pressure of water within a hose can vary widely, depending on a number of circumstances. For example, the pressure of water ed by a water utility. The pressure of water supplied by a pump and sustained by an air bladder, when water is supplied from a well, etc. A nozzle or other fluid distributor is secured to male coupler 16 at the te end of hose. The nozzle can be a conventional nozzle which varies the rate and spray pattern of water exiting from the nozzle.

Many nozzles are ed so as to be able to be comfortably gripped and used by an individual.

These nozzles also have a pivoting on-off handle which operates an internal valve. This internal valve permits, limits, and stops the flow of water through the nozzle.

The nozzle provides various amounts of restriction of water at the end of the hose depending on how large the opening in the nozzle is. The smaller the opening in the nozzle, the more the nozzle restricts the release of water at the end of the hose, and the higher the re and water volume inside the hose. The larger the opening in the nozzle, the less the nozzle restricts the release of water at the end of the hose, and the lower the pressure and water volume inside the hose. The re coming from a typical house is imately 60 psi. If the flow of fluid at the other end of the present invention was turned off and totally restricted, the psi inside the inner tube would be the same as the pressure coming from the house, 60 psi. At this high pressure, the inner tube 14 and the outer tube 12 according to one embodiment would expand to its maximum length of fifty feet. As water at the end of the hose is released, the re becomes reduced inside the hose and the hose begins to contract. However, the hose will ably remain fully expanded even when the pressure at the opposite end is reduced below the typical pressure of 60 psi coming from a house. In one example, the water pressure coming from the house was 60 psi and the water pressure exiting the nozzle at the other end of the hose was 35 psi. This 35 psi of pressure inside the elastic inner tube 14 was enough pressure to cause the inner tube 14 to expand laterally and udinally until its lateral and longitudinal expansion became constrained by the non-elastic outer tube 12 and expanded to the maximum length and width of the non-elastic outer tube 12. In a red embodiment, the hose 10 expands from ten feet in length in its contracted condition to fifty feet in length in its expanded condition.

Figs. 7 and 8 illustrate how male and female couplers 16 and 18 respectively are secured to the hose of a preferred embodiment of the present ion. In Fig. 7 the male coupler 16 includes a plurality of threads 20. The male coupler 16 also includes a tubular extension 32 which extends into the ors of the inner tube 14, the outer tube 12 and the expansion restrictor sleeve 26. The tubular extension 32 has a hollow interior 34 through which fluids can flow. A securing device 34 encompasses the outer sleeve 26, the outer tube 12, and the inner tube 14 and secures these elements to the tubular extension 34. A separate flow restrictor 37 is illustrated within coupler 16. Other types of flow restrictors, such as hose nozzles, sprayers, etc. can also be employed. Anything that restricts the flow of the fluid within the hose can be employed. As can be seen in Fig. 7, the outer tube 12 is relatively smooth, the inner tube wall is vely thin, compared to its thicker contracted ion and the expansion restrictor sleeve 26 is restricting the ion of the inner and outer tubes at the junction of the securing device 34. t the sleeve 26, the inner tube would immediately expand outwardly in a step function and probably rupture. The sleeve 26 permits the inner tube 14 to gradually expand and taper outwardly, thus preventing rupturing of the inner tube at this junction. Other types of connections, such as clamping and swaging can also be employed to secure the male coupler to the inner tube 14, the outer tube 14, and the sleeve 26. By using other types of connections, an ion restrictor sleeve may not be needed.

Fig. 8 illustrates the female coupler 18 secured to the hose of an embodiment of the present invention. The hose in Fig. 8 is in the cted condition. The female coupler 18 is provided with a plurality of internal threads 28. The threads 28 are designed to interact and cooperate with complementary threads 20 on a male coupler to provide a fluid tight connection between the male and female rs 16 and 18. The female coupler 18 also includes a tubular extension 36 which extends into the interiors of the inner tube 14, the outer tube 12 and the expansion restrictor sleeve 27. The tubular extension 36 has a hollow or 38 through which water can flow. A securing device 40 encompasses the outer sleeve 27, the outer tube 12, and the inner tube 14 and secures these ts to the tubular extension 36. As can be seen in Fig. 8, the soft fabric outer tube 12 is not , but folded, compressed and tightly gathered around the circumference of the inner tube 14, the inner tube 14 wall is relatively thick, compared to its extended condition and the sleeve 27 is not restricting expansion of the inner and outer tubes at the junction of the securing device 40. Without the sleeve 27, the inner tube 14 would immediately expand outwardly in a step function and probably rupture upon the application of water pressure to the interior of hose 10. The sleeve 27 permits the inner tube 14 to gradually expand and taper outwardly, thus preventing ing of the inner tube at this junction. Other types of connections, such as ng and swaging can also be employed to secure the female coupler to the inner tube 14, the outer tube 12, and the sleeve 27. By using other types of connections, an expansion restrictor sleeve may not be needed.

Another feature of embodiments of the present ion is the savings in weight of the hose. The hose 10 in its contracted condition is vely light and after it is expanded 4 to 6 times, the weight of the hose does not increase. Also, because the hose does not contain any metal components such as springs, wire mesh or other metal parts along the entire length of the hose between the male connector and the female connector a ten foot contracted hose may only weigh less than 2 pounds and in the expanded condition, (not counting the weight of the fluid inside the expanded hose) the fifty foot hose would also only weigh less than 2 pounds. In contrast however, a tional rubber ½ inch ID 50 foot hose could weigh up to 12 pounds. This saving in weight enables the hose to be easily carried, easily dragged, easily handled and easily used by anyone who uses the hose but especially by individuals who do not posses exceptional strength or do not want to drag, carry or lug around heavy, bulky, tional rubber hoses.

Another feature of ments of the present invention is that the outer tube 12 is reduced or decreased in length when there is no pressure within inner tube 14. With no pressure or volume in the elastic inner tube 12 the inner tube automatically contracts. The condition of the outer tube 12 when the inner tube 14 is in the contracted condition is illustrated in Figs. 1, 2 and 6. Because the outer tube is unconnected, unattached, unsecured, or unbonded to the inner tube along the entire length of the hose between the first end and the second end, the soft fabric material of the outer tube 12 can move freely with respect to the inner tube. The fact that the outer tube can move freely with respect to the inner along the entire length of the hose enables the outer tube to become folded, compressed and tightly ed around the e of the circumference of the inner tube along its length in the contracted condition when there is not water pressure within the inner tube 14. This folded, compressed and tightly gathered ion of the outer tube 12 prevents the hose 10 from kinking and also helps prevent it from becoming entangled upon itself. Thus, an empty hose 10 in the contracted ion is easily stored without worry of the hose kinking or becoming entangled, as most tional hoses do. This tendency of the hose 10 to not become kinked or entangled enables a user to store the hose 10 in a very small space with no worry of having to untangle or unkink the hose when it is removed from storage and used. A user of an embodiment of the present invention can take water hose 10 from a stored condition, secure a nozzle or other restrictor on one end of the hose, secure the hose 10 to a water faucet and turn on the water without the fear of the hose becoming entangled or kinked or without the need to untangle or unkink the hose.

After they are used conventional garden hoses are normally carried or dragged back to their place of e and they are stored on a reel or coiled up upon themselves and laid on a flat surface. This requires time to carry and drag the hose and to properly store the hose and also requires an expense to purchase the hose reel. The water hose 10 of embodiments of the present invention automatically and quickly contracts to its original place of storage and can then be easily folded up, rolled up, or coiled up and stored in any container, even very small containers, or on any surface, thus saving time and expense for the owner of the hose.

Figs. 5 and 6 illustrate a preferred ment of the present invention.

During the ly of the hose in the preferred embodiment a ten foot elastic inner tube 14 in its relaxed or cted condition is inserted into the hollow interior of a 50 foot non-elastic outer tube 12. The ten foot inner tube 14 and the 50 foot outer tube 12 and the expansion ctor sleeve 27 are then all attached and secured together on a coupler at the first end. The ten foot inner tube is then stretched or expanded through the hollow interior of the outer tube 12 until the elastic inner tube 12 is expanded to 5 times its relaxed or contracted length, At this point in the assembly process the expanded elastic inner tube 12 and the non-elastic outer tube 14 are both clamped down and the inner tube 12 and the outer tube 14 are both 50 feet long. The inner tube 12, and the outer tube 14 and the expansion restrictor sleeve 27 are then attached and secured er to the coupler at the second end while the hose is still in the expanded condition. As previously stated, the elastic inner tube 14 and the non-elastic outer tube 14 are only attached and secured er at the first end and the second end. The inner tube 12 and the outer tube 14 are unattached, unbonded, unconnected and unsecured along the entire length of the hose between the first end and the second end. This allows the non-elastic outer tube to move freely with respect to the inner tube along the entire length of the hose between the first end and the second end.

When the clamp is removed at the second end from the expanded 50 foot elastic inner tube 14 and the 50 foot non-elastic outer tube 12, the expanded elastic inner tube 14 automatically contracts within itself back to its al relaxed length of ten feet. The length of the 50 foot non-elastic outer tube 12 is also reduced to only ten feet in the contracted condition because when the stretched and extended elastic inner tube 12 begins to contract from its expanded length, the unattached, unbonded, unconnected and unsecured soft fabric non-elastic outer tube 12 catches on the rubbery c inner tube 14 material causing the outer tube 12 to automatically become folded, compressed and y gathered around the outside circumference of the entire length of the contracted inner tube 14. Thus, e the 50 foot astic outer tube has many folds that are compressed and y gathered around the 10 foot contracted and relaxed inner tube 14, the folded, compressed and tightly gathered 50 foot outer tube 12 es the same 10 foot length as the 10 foot contracted inner tube 12.

When rized water is introduced into the elastic inner tube 12 in the contracted and relaxed condition, the elastic inner tube begins to expand laterally and longitudinally and the outer tube begins to unfold and uncompresses around the circumference of the elastic inner tube. Consequently, when the inner tube expands to its maximum length of 50 feet, the outer tube unfolds, and uncompresses along the entire length of the inner tube until it reaches the same 50 foot length as the inner tube in the expanded condition. Also, because the inner tube expands both longitudinally and laterally and its expansion is constrained by the nonelastic outer tube 12, the inner tube 14 fills all of the available space inside the non-elastic outer tube 12 and thus the surface of the unfolded, uncompressed outer tube 12 becomes smooth in the expanded condition as depicted in Fig. 5.

The hose in Fig. 5 is in its expanded condition after water under pressure has been introduced into the hose and the pressure and volume of the water has increased inside the inner tube 14. The ed length of the hose 10 is now, for e, 50 feet, 600 , or .24 meters. The volume of fluid within the hose 10 may be .943 gallons, 120 ounces, 3.569 liters, or 3180.64 cubic centimeters. The outer circumference of the hose 10 may be 2.12 inches or 5.39 centimeters. The diameter of the outer tube 12 may be .68 inches or 1.73 centimeters.

The diameter of the inner tube 14 may be .64 inches or 1.63 centimeters. The thickness of the wall of the inner tube 14 may be .031 inches or .079 centimeters. The thickness of the outer tube 12 may be .031 inches or .079 centimeters. The thickness of the outer tube 12 remains the same in both the expanded and contracted conditions. The material from which the inner tube 14 is formed can be any color. The hose in Fig. 6 is in its contracted ion and its example dimensions are as follows. The length of the hose is 10 feet, 3.33 yards, or 3.05 meters. The volume of fluid within the hose 10 is .025 gallons, 3.2 , .094 , or 94.635 cubic centimeters. The outer circumference of the hose 10 is 2 inches or 5.08 centimeters. The diameter of the outer tube 12 is .4 inches or 1.02 centimeters. The inside diameter (ID) of the inner tube 14 is, .25 inches or .635 centimeters. The outside diameter (OD) of the inner tube is .375. The thickness of the wall of the inner tube 14 is .125 inches or .317 eters. The thickness of the outer tube 12 is .031 inches or .079 centimeters.

The outer tube 12 is relatively smooth in the expanded condition, as seen in Figs. 3 and 5. This smooth surface enables the hose 10 to be used and manipulated with relative ease. In addition, the expanded elastic inner tube 14 and the smooth surface of the outer tube 12 prevents the hose from kinking. Also the smooth surface enables indicia to be placed on the outer surface. An example of this indicia is illustrated in Fig. 5, the words "Magic Hose". All types of indicia can be placed on the exterior of the outer tube 12, such as letters, numbers, patterns, designs, and/or pictures. Any type of indicia that can be affixed to the outer tube 12 can be used. The indicia can be any color also including black or white. The material from which the outer tube 12 is formed can also be any color.

The red embodiment of the present invention utilizes water to fill and expand the hose 10. However, other fluids can also be employed with the present invention, particularly liquids which are not corrosive to the inner tube 14. The temperatures of the fluids are preferably lower than temperatures which will alter the physical and chemical properties of the materials used in the hose. Also, because the inner tube is elastic it can expand if the water within the tube freezes. For example, if a garden hose were left outside in the winter, the water contained therein would freeze. Normal garden hoses would split, but a water hose of embodiments of the present invention would expand when the water turns to ice because the inner tube is elastic.

All patents and publications mentioned in this specification are tive of the levels of those skilled in the art to which the invention pertains. All patents and publications are herein orated by reference to the same extent as if each individual publication was specifically and dually indicated to be incorporated by reference.

It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to the ic form or arrangement herein described and shown. It will be apparent to those skilled in the art that various s may be made without departing from the scope of the invention and the invention is not to be considered limited to what is shown and described in the specification and any drawings/figures included herein.

One skilled in the art will readily appreciate that the present invention is well adapted to carry out the objectives and obtain the ends and advantages mentioned, as well as those nt n. The embodiments, methods, procedures and techniques described herein are presently representative of the preferred embodiments, are intended to be ary and are not intended as limitations on the scope. Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention and are d by the scope of the appended claims. Although the invention has been described in connection with specific preferred embodiments, it should be understood that the ion as claimed should not be unduly limited to such specific embodiments. Indeed, various cations of the described modes for carrying out the invention which are obvious to those skilled in the art are intended to be within the scope of the following claims.

Claims (30)

CLAIMS is:

1.Claim 1. A water hose comprising: a flexible elongated outer tube having a first end and a second end, an interior of said outer tube being substantially hollow; a flexible ted inner tube having a first end and a second end, an interior of said inner tube being ntially hollow, said inner tube being formed of an elastic material; a first coupler secured to said first end of said inner and said outer tubes; a second coupler secured to said second end of said inner and said outer tubes; and said first coupler fluidly coupling said hose to a source of pressurized water for receiving water under pressure, said second coupler coupling said hose to a water flow restrictor for discarging water under pressure, y said water flow restrictor creates an increase in water pressure between said first coupler and said second coupler within said hose as water is discharged from said hose, said increase in water pressure expands said elongated inner tube longitudinally along a length of said inner tube and laterally across a width of said inner tube resulting in a decrease in a wall thickness of said inner tube, thereby increasing a length of said hose to an ed condition and said hose being contracted to a decreased length when there is a decrease in water pressure between said first r and said second r.

2.Claim 2. The water hose of claim 1 wherein said outer tube is made from a material which will not stretch longitudinally or laterally when a force is applied to an interior of said outer tube.

3.Claim 3. The water hose of claim 1 or 2 wherein said outer tube in made from a material selected from the group consisting of nylon, polyester, or polypropylene.

4.Claim 4. The water hose of any one of the preceding claims wherein said inner tube is made from an elastic material with an elongation ratio of up to six to one and which can expand up to six times its contracted or unexpanded length.

5.Claim 5. The water hose of any one of the preceding claims including a restrictor sleeve secured to said first end of said inner and said outer tubes, r expansion ctor sleeve secured to said second end of said inner and said outer tubes, whereby said expansion restrictor sleeves provide a gradual transition of the laterally outward expansion of said inner tube when there is an increase in water pressure between said first coupler and said second coupler.

6.Claim 6. The water hose of any one of the preceding claims wherein said inner tube and said outer tube are made from materials which will not kink or become led upon itself when said inner and said outer tubes are in their expanded ion, the hose being expandable 4 to 6 times its contracted length.

7.Claim 7. The water hose of claim 5 including a securing device ng said ion restrictor sleeve, said outer tube, and said inner tube to said first coupler, another securing device securing said another expansion restrictor sleeve, said outer tube and said inner tube to said second coupler.

8.Claim 8. The water hose of any one of the preceding claims including indicia on said outer tube.

9.Claim 9. The water hose of claim 8 wherein said indicia is recognizable when said hose is in said extended condition and said indicia is not recognizable when said hose is in said retracted condition.

10.Claim 10. The water hose of any one of the ing claims wherein said water flow restrictor is ally formed with said second coupler.

11.Claim 11. The water hose of any one of the preceding claims wherein said flow restrictor is a fluid nozzle which is removeably secured to said hose.

12.Claim 12. The water hose of claim 7 wherein said ng devices extend around an outer circumference of said hose.

13.Claim 13. The water hose of any one of the preceding claims wherein said hose is a garden hose.

14.Claim 14. The water hose of any one of claims 1 to 12 wherein said hose is a fire hose used by firefighters.

15.Claim 15. The water hose of any one of the preceding claims wherein said outer tube can take up to 250 psi pressure.

16.Claim 16. The water hose of any one of the preceding claims including a female couple adapted for coupling to a water faucet connected to the first ends of the inner and outer tubes.

17.Claim 17. The water hose of claim 16 including a male couple connected to the second ends of the inner and outer tubes for discharging water.

18.Claim 18. The water hose of any one of the preceding claims wherein said inner tube and said outer tube are made from materials which will not kink when said inner and said outer tubes are in their contracted condition.

19.Claim 19. The water hose of claim 1 wherein the outer tube is unattached, unconnected, ded, and unsecured to the elastic inner tube along the entire length of the inner tube between the first end and the second end so that the outer tube is able to move freely with respect to the inner tube along the entire length of the inner tube when the hose expands and contracts.

20.Claim 20. The water hose of any one of the preceding claims wherein the hose is at least ten feet long in the contracted state.

21.Claim 21. The water hose of any one of the ing claims wherein the outer tube is not , but is randomly folded, compressed and tightly gathered around the circumference of the inner tube in its contracted state.

22.Claim 22. The water hose of any one of the preceding claims wherein the outer tube catches on rubbery outer e of the elastic inner tube and automatically becomes folded, compressed and tightly gathered around the outside circumference of the entire length of the contracted inner tube.

23.Claim 23. A method of transporting water comprising: introducing water into a hose, said hose including a non elastic, bendable elongated outer tube having a first end and a second end, an interior of said outer tube being ntially , an expandable, elastic elongated inner tube having a first end and a second end, an interior of said inner tube being substantially hollow, said inner tube being formed of an elastic material; securing a first r to said first end of said inner and said outer tubes; securing a second r to said second end of said inner and said outer tubes; said inner and said outer tubes being secured to each other only at said first and said second ends and unsecured to each other between said first and said second ends; connecting said first coupler to a source of pressurized water to receive water under pressure; connecting said second coupler to a water flow restrictor to discharge water under pressure; creating an increase in water pressure between said first coupler and said second coupler within said hose as water is discharged from said hose, said increase in water re automatically expanding said inner tube longitudinally along a length of said inner tube and laterally across a width of said inner tube resulting in a decrease in a wall thickness of said inner tube, thereby increasing a length and width of said hose to an ed condition; and tically contracting said hose to a decreased length and width by removing said water pressure differential between said first coupler and said second coupler, whereby said inner tube moves freely with t to said outer tube when there is no water pressure differential between said first coupler and said second coupler.

24.Claim 24. The method of transporting a water of claim 23 wherein said inner tube is elongated up to six times its contracted or unexpanded length.

25.Claim 25. The method of transporting water of claim 23 or 24 including securing an expansion restrictor sleeve to said first end of said inner and said outer tubes; securing another expansion restrictor sleeve to said second end of said inner and said outer tubes; whereby when said increase in fluid pressure expands said inner tube, said expansion restrictor sleeve and said another expansion restrictor sleeve restrain the ion of said inner and said outer tubes and prevent said inner tube from increasing in diameter as a step function.

26.Claim 26. The method of transporting water of any one of claims 23 to 25 including providing indicia on said outer tube and expanding said outer tube longitudinally along a length of said outer tube until said indicia is recognizable.

27.Claim 27. The method of transporting water of any one of claims 23 to 26 wherein said outer tube constrains the lateral or radial expansion and the longitudinal expansion of said inner tube upon an increase of said water pressure between said first coupler and said second coupler within said hose.

28.Claim 28. The water hose of claim 1 wherein: the inner and outer tubes are unsecured to each other between the first and second ends; the first coupler is a female coupler; the second coupler is a male coupler; said hose expands to the expanded condition when water under pressure is uced into the first end of the hose; the water flow restrictor is ured to vary the amount of restriction of water under pressure that is released from the water flow ctor whilst maintaining the length of the hose in the ed ion; and wherein the decrease in water pressure that causes the hose to contract is a result of water under pressure no longer being introduced into the first end of the hose.

29.Claim 29. A water hose substantially as before described with reference to the drawings.

30.Claim 30. A method of transporting water substantially as hereinbefore described. 2 12 36 14 36 14 <1. 12 PEG. Ll. FIG.