METHOD AND APPARATUS FOR IMPROVED WATER MASSAGE

Description

[0001] The invention relates to a method for water massage and to waterbeds of the type having a water-containing mattress for buoyantly supporting a person on the membrane.

[0002] Conventional waterbeds have been used in treating orthopedic and burn patients, stroke victims, the elderly and persons confined to bed for long periods of time. Such beds are useful in preventing bed sores. While waterbeds have been used for the treatments mentioned above, the treatment of muscular and circulatory ailments has been accomplished with whirlpool or circulating baths. Some of these require that the patient be lowered into the bath water in a chair carried by a hoist, while allows the torso of an infirmed patient to be safely immersed while providing a means for firmly supporting the patient and lifting the patient out of the water, when necessary.

[0003] Several prior devices have used relatively small water-filled pads for treating localized areas of the body. In such arrangements the person does not receive the benefits of buoyant support, coverage of the body is incomplete, the water piping apparently carries a small volume at a relatively high pressure and there is considerably more mechanical equipment required for obtaining the relatively isolated effects on the body torso.

[0004] There is also known in the wider field of water massage a wide variety of baths. Baths are without a doubt beneficial to mankind, but for use in therapy there is a disadvantageous effect on the skin tissue after a certain amount of time. Another disadvantage is that baths require an amount of pre-bath and post-bath activity, such as drawing the water, undressing, dressing and so forth. At health club facilities where bath water is treated with chemicals it must nevertheless be changed and retreated with such chemicals frequently.

[0005] U. S. Patent No. 4,607,405 discloses a jet stream waterbed in which a number of individual water jet assemblies are positioned within the enclosure having a top membrane, each having a ring of upstanding flexible water tubes fluidly connected to an individual water pump. The upper ends of the water tubes extend to a point close to the underside of the top of the mattress for imparting pulsating jets of water therein to massage a person lying on the mattress. In practice, the arrangement is complicated and expensive requiring multiple pumps for operation as well as increasing the difficulty in servicing due to the need to access the jet assemblies which are disposed within the mattress proper.

[0006] The present invention seeks to avoid these drawbacks and complexities by providing a method of imparting the pleasurable aspects of water massage to a user for rest and relaxation purposes comprising the steps of: supporting an entire person in a reclining position on a top membrane of an enclosure containing a layer of heated water of sufficient standing depth to support the entire person in a floating manner; drawing the heated water out of the enclosure; introducing the heated water under pressure into an interior of the enclosure to develop water jets that are laterally spaced apart and aimed upwardly to impinge upon the underside of the top membrane on which the person is supported to produce jet pressure massage effects on a plurality of areas of the person, characterized by the steps of introducing the heated water as an array of laterally spaced water jets into or adjacent the bottom of the layer of heated water in the enclosure and imparting sufficient pressure upon the heated water withdrawn from the enclosure to drive the water jets upwardly through the standing depth of the layer of heated water to impinge on the underside of the top membrane for producing a rippling effect under the person thereon.

[0007] The present invention further provides a waterbed for circulating streams of pressurized heated water to massage a reclining person supported thereon, the waterbed including an enclosure having a top membrane of water-impervious material for supporting the reclining person in a floating manner on a volume of water that extends at least the length and width of the person, base means for supporting the enclosure in an elevated position, a number of water inlet means and at least one water outlet supported by said base means in an elevated position and with the water inlet means being arranged for directing streams of pressurized heated water upwardly towards the underside of the top membrane and the water outlet being operable for conveying heated water out of the enclosure, a water pump in fluid communication with the water outlet to draw the water from the enclosure and in fluid communication with the water inlet means to develop jet streams of heated water to impinge on the underside of the top membrane, characterized by a retainer plate of water-impervious material positioned between the base means and the enclosure, said water inlet means comprising a number of water inlets sealingly clamped to said retainer plate and arranged to open into the interior of the enclosure through respective openings in the bottom membrane thereof, said water pump comprising a single pump adapted to impart sufficient pressure to the streams of heated water entering the enclosure through the water inlets to drive the streams from the bottom membrane of said enclosure up through the water therein to impinge on the underside of the top membrane.

[0008] One advantage of the invention is to apply massaging streams of water and to provide the pleasurable and therapeutic effects thereof on a human body without the necessity of submerging any part of the body. The near immersion of patients with the apparatus currently used for physical therapy at medical facilities requires careful supervision which can be reduced with the invention. The invention also provides an apparatus that is usable for rest and relaxation as well as for therapy. The apparatus can be located in a wide variety of places within a medical facility or residence and is not limited to location in a bathroom.

[0009] Another feature of the invention is to provide the circulating streams of water in an apparatus in which a body of the individual is buoyantly supported. It is understood that a person using the invention can be supported on the apparatus in any desired position i.e., in a reclining or in a prone position. Buoyant support alleviates painful pressure points.

[0010] Another feature of the invention is to provide an array of heated pressurized streams of water at preselected locations corresponding to areas of the body where massaging effects are most effectively applied such as the neck, shoulders, back, arms and legs.

[0011] Another feature of the invention is to provide a plurality of therapy treatments by aspirating an array of water jets, or by introducing air into a water mattress to generate an aspirated layer of water that impinges upon the underside of the membrane. Aspirated water jets provide an alternative mode of operation to the use of unaspirated water jets and may be preferred for pleasure or therapy by certain individuals.

[0012] A more specific advantage of the invention is to support the plumbing necessary to produce water jets while providing a sealing connection thereof to a waterbed mattress. This is accomplished by means of a stiff support member of a water-impervious material.

[0013] Still another advantage of the invention is to provide an aesthetic appearance by a waterbed which is accomplished by hiding the mechanical components within the base and frame assembly. The base and frame assembly may be formed with pockets at either the head or foot end in which fittings can be sealingly connected to the top membrane of the mattress for withdrawal of air.

[0014] There are basic advantages of the invention over whirlpool and circulating baths in conserving water, and reducing the cost of operation by lowering requirements for chemicals to treat the water.

[0015] Other features and advantages of the invention will appear in the following description, wherein reference is made to the accompanying drawings that form a part hereof, and in which there is shown by way of illustration several preferred embodiments of the invention. These embodiments, however, do not necessarily represent the full scope of the invention, but are merely illustrative, and therefore references are made to the claims at the end of the description for determining the scope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 

Fig. 1 is a perspective view of a first embodiment of a waterbed of the invention with parts broken away for a better view;

Fig. 2 is a longitudinal section view of the waterbed of Fig. 1 taken in a vertical plane;

Fig. 3 is a schematic plan view of the distribution of inlets, outlets and a heater that are seen in Fig. 1;

Fig. 4 is a detail section view of one of the inlet assemblies seen in Figs. 1 and 2;

Fig. 5 is a fragmentary, perspective view of one of the outlet assemblies seen in Figs. 1 and 2;

Fig. 6 is a plan view of the plumbing seen in Fig. 2;

Fig. 7 is a perspective view of a second embodiment of the invention with parts broken away for a better view;

Fig. 8 is a longitudinal section view of the waterbed of Fig. 7 taken in vertical plane;

Fig. 9 is a detail section view showing the manner of attaching a sealing cover shown in Fig. 8;

Fig. 10 is a plan view of the sealing cover of Figs. 8 and 9 and its surrounding area; and

Fig. 11 is a plan view of an air and water distributor seen in the embodiment of Fig. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] A first preferred embodiment of a waterbed that incorporates the present invention is illustrated in Figs. 1-6. Referring to Fig. 1, the waterbed has a rectangular base or pedestal 1 with a generally open interior that is traversed by vertical cross members 13 that extend longitudinally and transversely between its outer walls to provide additional support. These cross members 13 also effect a partitioning of the interior into smaller compartments.

[0018] Drawers 19, a typical item in waterbeds, are provided to slide in and out of the compartments through the sides of the pedestal 1. Access doors 39 are provided at the foot end of the pedestal 1 for access to the plumbing to be described more particularly below.

[0019] Also seen in Fig. 1 is a wood frame comprising a generally horizontally extending deck 2 that rests on top of the pedestal 1. The frame also has four up-standing sidewalls 3 rising upwardly from the deck 2 and surrounding the perimeter of a waterbed mattress 4 supported by the deck 2 and pedestal 1. The mattress 4 is made of a flexible vinyl membrane that is impervious to water and is sealed to form an envelope with top, bottom and side portions to contain a volume of water 33. For convenience of the description, these will each be referred to as a membrane with it being understood that they may in fact be portions of a larger membrane. The mattress 4 is partially filled through an uncapped filler assembly (not shown) with about one hundred and sixty gallons of water 33, which when contained in the mattress stands about nine inches deep. Although mattresses of various sizes and capacities are usable with the invention, it is preferred that mattresses of the invention contain a layer of water about nine to ten inches deep. The mattress 4 substantially fills the length and width of the frame cavity, with the top of the mattress 4 being about even with the top of the sidewalls 3, and the sides of the mattress 4 being contained against outward expansion by the sidewalls 3. A vinyl safety liner 5 seen in Figs. 4 and 5 is positioned under the mattress 4 and is folded upwardly along its sides to protect the wood frame and the area surrounding the waterbed from any leakage. The elements mentioned so far, except the access doors 39, are typically found in conventional waterbeds. An item of optional equipment used with most waterbeds is the elongated heating pad 6 illustrated in Figs. 1 and 3, which is positioned on the deck 2 underneath the safety liner 5 and is used to heat the water 33 above the average room temperature. Also included in the mattress 4 (though not shown in Fig. 1) are several baffles which damp and reduce waves within the mattress 4.

[0020] Conventional waterbeds have been used in treating orthopedic and burn patients, stroke victims, the elderly and persons confined to bed for long periods of time. Such beds are useful in preventing bed sores. While waterbeds have been used for treatments mentioned above, the treatment of muscular and circulatory ailments has been accomplished with whirlpool and other circulating baths. Some of these require that the patient be lowered into the bath water in a chair carried by a hoist. What I have conceived is that both of these treatments can be better performed by a waterbed in which heated water is circulated and in which jets of heated pressurized water are directed against the underside of a membrane on which a body is supported in a floating manner. Preferably the water is heated in a range between 80 and degrees F. when used for typical therapy sessions of thirty minutes. I have further conceived an arrangement of plumbing in a waterbed that produces water jets that impinge on the underside of the membrane. In providing this plumbing there is the problem of sealing the waterbed mattress around the area where inlet nozzles would introduce such jet streams into the mattress. Also, due to the large volume of water used in a waterbed mattress, the plumbing, and more importantly, the weight of the water contained in the plumbing, presents a heavy item to be supported.

[0021] I have solved the first problem by anchoring an array of inlet assemblies 31 and a plurality of outlet assemblies 32 in a stiff retainer plate 8 as seen in Figs. 1, 3 and 4. This plate 8 covers an area slightly larger than a human body, is centrally positioned on the deck 2, as seen in Fig. 1, and is positioned between the safety liner 5 and the bottom membrane of the mattress 4 as seen best in Figs. 4 and 5. The central location allows room for the elongated heating pad 6 to extend along the deck 2 on one side of the retainer plate 8 as seen in Fig. 3, in thermal contact with safety liner 5 and the bottom of the mattress 4 to direct heat to the body of water contained therein. The baffles are also positioned to the sides of the retainer plate 8 to be out of the way of water jets 34. The retainer plate 8 is preferably made of eighteen gauge metal, which will flex slightly, if necessary, to carry the loads imposed on it, but will not be deformed by such loads. The material used for the retainer plate 8 is impervious to water. Other materials including plastics could also be used, provided they have the above-mentioned qualities. A preferred type of metal is stainless steel due to its non-corrosive characteristics in moist environments. The retainer plate 8 should be smooth on its broad surfaces and along its edges so as not to perforate the bottom of the mattress 4 or the safety liner 5.

[0022] Referring to Fig. 3, eight inlet assemblies 31 are arranged in an array so as to direct jets of heated water against various areas along a body positioned on the top membrane of the mattress 4 as seen in Fig. 2. A pair of outlet assemblies 32 are located away from the inlet assemblies 31 and towards the foot end of the mattress 4 so as not to disturb the water jets 34 emanating from the inlet assemblies 31.

[0023] One of the inlet assemblies 31 and the manner in which it is anchored in the support plate 8 will now be described with reference to Fig. 4. As seen there, the deck 2 has a relatively large aperture 35 through which the inlet assembly 31 extends. The assembly 31 has a threaded fitting 7 with a flange that can be inserted through an opening in the bottom membrane of the mattress 4. The body of this fitting 7 can then be inserted through an aperture in the retainer plate 8 and an opening of corresponding size in the safety liner 5. A first washer 15 of synthetic, elastomeric material is captured between the underside of the fitting flange and the bottom membrane of the mattress 4. A second such washer 15 is pressed against the underside of the safety liner 5 by a PVC washer 16 and locknut 14 which threadingly engages the body portion of fitting 7 to sealingly clamp onto the combination of the mattress membrane 4, retainer plate 8 and safety liner 5. The weight of the water-filler mattress 4 prevents the retainer plate 8 and the inlet and outlet assemblies 31 and 32 from shifting position and stressing the membrane of the mattress 4. An inlet nozzle member 17 is received in an inner threaded bore within the fitting 7. The parts of the inlet assembly 31, aside from the washers 15, are preferably made of a polyvinyl chloride (PVC) material. Other materials, such as ABS (acrylonitrile-butadiene-styrene) plastic can also be used for these parts.

[0024] Referring now to Fig. 5, an outlet assembly 32 for drawing water by suction is anchored to the retainer plate 8 by a fitting 10 and a locknut 12 which clamp a pair of washers 15 of synthetic elastomeric material against the bottom of the mattress 4, the retainer plate 8 and the safety liner 5. Again, the fitting 10 extends through a larger opening 35 in the wooden deck 2. The outlet fitting 10 is provided with a safety grate 21 across its drain opening to prevent portions of the mattress 4 and other large objects from being sucked into the plumbing. The safety grate 21 is also believed to provide for an even draw of water from all directions.

[0025] Referring now to Figs. 2 and 6, an arrangement of plumbing passes through openings in the cross members 13 of the pedestal 1. Inlet assemblies 31 are coupled through inlet coupling unions 18 and T-shaped fittings 27 to respective branches of inlet feeder piping 9. The branches are connected to a main trunk of the feeder piping 9 through another T-shaped fitting 27 at one end and are terminated by plugs 28 at an opposite end. A water recirculation pump 11 is situated at floor level within the interior of the pedestal 1. The discharge side of the pump 11 is connected to the main trunk of the inlet piping 9, through a pump disconnect union 23, a series of elbow fittings 30 and a shut-off valve 24 just before the closest T-shaped fitting 27. Like the inlet and outlet assemblies 31 and 32, this piping 9 and its associated fittings 27 and 30 are preferably made of PVC material. The outlet assemblies 32 are connected to the return side of the pump 11 through outlet coupling unions 26, return piping 22, a T-shaped connector 29, a second shut-off valve 24, and a second pump disconnect union 23. The inlet and outlet coupling unions 18 and 26 provide a convenient means of connecting the piping 9 and 22 to the inlet and outlet assemblies 31 and 32, while the pump disconnect unions 23 and 24 provide a convenient means of assembling the waterbed and a means of disconnecting the piping 9 and 22 for servicing the pump 11. Shut-off valves 24 are provided so that the pump 11 can be disconnected without draining the water 33 from the mattress 4. Controls for the pump 11 and heating element 6 are housed in control box 20 and connected to the pump 11 and heating element 6 through conventional electrical connections as seen in Figs. 1 and 3.

[0026] Much has been said and written about the beneficial effects of whirlpool and circulating baths. My apparatus operates differently from these in directing jets of water 34 upwardly and generally parallel to impinge upon the underside of the top membrane of the waterbed mattress 4. This operation allows the waves reflected from the membrane to reinforce or partially cancel each other, and create a rippling effect under a body positioned on the mattress 4. Thus, the apparatus of the invention is believed to exemplify a method of water therapy not heretofore known. This method includes the steps of supporting a body on the top membrane of an envelope containing heated water, introducing an array of jets into the envelope generally upwardly and perpendicular to the top surface of the water to impinge upon the underside of the top membrane and create a multitude of ripples across the membrane, and drawing water from a region near one end of the envelope and recirculating this water to provide a continuous supply of water for the water jets 34.

[0027] I have found that the massaging affects of such a waterbed are improved by increasing the number and density of inlet assemblies 31. This however requires a pump of greater capacity and a considerable amount of additional piping and fittings, which adds to the expense of the waterbed. To reduce the expense and complexity of the waterbed, while expanding the range of therapeutic effects, I have provided a second embodiment of my invention in Figs. 7-9. In this embodiment I have provided two alternative modes of operation to introduce air and thereby aspirate the water being directed against and along the underside of the top membrane of a waterbed mattress 40. This mattress 40 is similar in construction to the mattress 4 in Fig. 1-6, however it can be seen more clearly in Fig. 8 that there is some slack in the top membrane allowing it to provide loose folds at its ends, which are lifted several inches above the top surface of the water 48.

[0028] In a first mode of operation illustrated in Fig. 8, an air inlet valve 41 is connected in a line of return piping 42 going to a water pump 43, and when the valve 41 is opened, it allows air to be sucked through the pump 43 and mixed with the water conveyed to water inlets 44 through inlet feed piping 45. This produces aerated water jets 78 emanating from the inlets 44 into the mattress 40.

[0029] To control the amount of air that collects in the mattress 40 above the layer of water 48, a plurality of air relief valves 49, seen in both Figs. 7 and 8, are mounted in a head 50 and a foot 51 of a base and frame assembly 52 that rises above and overhangs the respective ends of the mattress 40. By unscrewing the caps 53, seen best in Fig. 8 at the top ends of the air relief valves 49, a balance can be maintained between the air entering and leaving the mattress 40. Also, a desired amount of air can be allowed to accumulate in the mattress 40 prior to balancing the air intake and exhaust. The mattress 40 is also provided with an air pressure safety valve (not shown) so that if the air pressure should reach a certain high pressure limit, the valve will open. With a layer of pressurized air above the water 48 the application of water jets 78 provides a different type of effect that may be preferred by some users to effects obtained with the apparatus of the first embodiment.

[0030] In a second mode of air-injected operation, an air pump 54 seen in Fig. 8 is situated at floor level in the interior of the base and frame assembly 52 to supply pressurized air. An air inlet feed line 55 rises vertically upward into a cavity 87 in the head 50 of the base and frame assembly 52. As seen in Fig. 7 the air inlet feed line 55 has an 180-degree bend at its upper extent and travels back down and beneath the deck 58 of the base and frame assembly 52 as seen in Fig. 8. The inlet line 55 then extends laterally through a T-fitting 59 and an elbow fitting 60, respectively, and through unions 57 to a pair of air inlets 62, through which air is fed into the interior of the mattress 40. The rise of the air inlet feed line 55 above the water level keeps water 48 from being fed back into the air pump 54 when that pump is off. Nevertheless, the air pump 54 is preferably of the type in which its motor is sealed against moisture passing through its impeller portion.

[0031] Air is evacuated from the mattress in the second mode illustrated in Fig. 8 either through the relief valves 49 or through a suction pipe 56 that is connected through a series of elbow fittings 60 to the suction side of the air pump 54. This pipe 56 extends upwardly from the air pump 54 into the head 50 of the base and frame assembly 52 and through a portion of the vertical cavity 87 in which the air inlet piping 55 is also situated. The air suction pipe 56 then extends outwardly and down through a cavity 88 in a portion of the head 50 overhanging the head end of the mattress 40. A floating air intake unit 61 with upwardly opening apertures is connected through extensible tubing 70 to the suction pipe 56 to draw air off the top of the water 48.

[0032] For the second mode of air-injected operation the water pump 43 is connected to four water inlets 44 and two water outlets 47 in a manner illustrated in Figs. 7 and 8. The inlets 44 and outlets 47 are formed as integral parts of an air and water distributor fitting 46. The inlets 44 and outlets 47 are formed with threads around their outside circumference for connection to the plumbing. The water outlets 47 are connected through unions 63, elbow fittings 64 and T-fittings 65 (partially hidden) and a shut-off valve 66 to the return side of the water pump 43. The discharge outlet on the pump 43 is connected through a shut-off valve 67, T-fittings 68, elbow fittings 69, inlet feed piping 45 and unions 57 to the four water inlets 44. Pump disconnect unions can also be provided but have not been shown in Fig. 8.

[0033] To provide aerated streams of water with a minimum amount of plumbing, I have provided the wafer-shaped air and water distributor fitting 46, which is preferably made of an acrylic polymeric material, for inclusion in the interior of the waterbed mattress 40. The rectangular distributor fitting 46 have top and bottom planar sides that are relatively long and wide, as seen best in Fig. 7, to cover an area slightly larger than the body of a six-foot person of average weight. As seen in both Figs. 7 and 8, this distributor 46 is relatively thin compared to its length and width.

[0034] As illustrated best in Fig. 11 the interior of the distributor fitting 46 has a rectangular, inner chamber 72 that is separated by a rectangular, looped interior divider 73 from an outer chamber 74 that loops around the inner chamber 72 and divider 73. The outer chamber 74 is enclosed by three short exterior side-walls connecting the top and bottom sides of the distributor fitting 46 and a transverse divider 75 spaced from the interior divider 73 and extending between the sidewalls to separate the outer chamber 74 from a compartment 71 opening towards the foot end. The two air inlets 62 are spaced along the longitudinal axis of the distributor fitting 46 and open into the inner chamber 72. The four water inlets 44 are located to enter near the four corners of the outer chamber 74. Water jet ports 76 are spaced along the length of the top portion of the distributor fitting 46 that encloses the outer chamber 74 so that the four streams of pressurized water entering the outer chamber 74 are divided and dispersed into a greater number of pressurized streams leaving the manifold 46. An array of smaller air stream ports 77 are formed in the top portion of the distributor fitting 46 that encloses the inner chamber 72. These divide and distribute pressurized air from the two large streams entering chamber 72 into many smaller streams 79 of pressurized air leaving the distributor fitting 46 in Fig. 8. As the pressurized streams of water 78 and air 79 leave the distributor fitting 46 and flow towards the top membrane of the mattress 40, they will become mixed to form an aspirated layer of water along the underside of the mattress membrane.

[0035] Referring again to Fig. 11, the water outlets 47 are located in the compartment 71 opening towards the foot end of the waterbed so as to draw water out of the mattress 40 without interfering with the air and water jets 78 and 79 being directed towards the top membrane of the mattress 40. The water outlets 47 and two return ports 80 are formed with integral cross members 111 that perform the same function as the safety grates 21 in the first embodiment.

[0036] By dividing a few large streams of air and water into many smaller streams, a distributed aspirated layer of water can be provided for a pleasurable and therapeutic effect without unduly increasing the amount of piping to convey the air and water from the pumps 43 and 54 under the deck 58. The number of water inlets 44 can actually be reduced to two, the number of water outlets 47 can be reduced to one, and the number of air inlets 62 can be reduced to one, however, I prefer to provide the numbers shown in Fig. 11 for greater volume and stronger massaging effects over the full area of the user. For the greatest range of pleasurable and therapeutic effects, the distributor fitting 46 can be provided in the same embodiment as the air inlet valve 41 as seen in Fig. 8.

[0037] The integral air and water inlets and outlets 44, 47 and 62 in distributor fitting 46 are connected in slightly different manner to the plumbing, the deck 58 and retainer plate 81 than in the first embodiment. As seen in Fig. 8 the bottom membrane of the mattress 40, the retainer plate 81, a safety liner 82 and a large, rectangular, apertured gasket 83 are clamped between the bottom of the distributor 46 and locknuts 84. The retainer plate 81 and safety liner 82 are similar to those in the first embodiment, but the retainer plate 81 is centered in layer of foam material 85 to provide a flat surface underneath the bottom membrane of the mattress 40. The thickness of the sectioned layers in Figs. 7, 8 and 9 has been somewhat exaggerated as an aid in disclosing the details of carrying out the invention.

[0038] To insert the distributor fitting 46 into a sealed mattress of the type offered by mattress manufacturers, I have devised a seal cover 86 seen in Figs. 9 and 10 for sealing an opening 90 in the bottom membrane of the mattress 40. As seen in Fig. 10 the opening 90 is slightly shorter than the width of the distributor fitting 46. This opening 90 also has some width transverse to its longer dimension, so that it can be stretched to allow insertion of the distributor fitting 46. This cover 86 is made of the same material as the distributor fitting 46. A gasket 91 of less thickness than the large gasket 83 is seen in Fig. 9 and is used to sealingly press the portions of the mattress 40 against the distributor 46, the larger gasket 83 compensating for the added thickness of the cover 86. The cover 86 is fastened with countersunk screws 92 that are inserted with sealant through the cover 86 and into corresponding holes in the bottom of the distributor fitting 46. A simpler method, but one requiring additional equipment would be sealing the seams of an unsealed mattress membrane after the distributor fitting 46 is inserted. In both methods of inserting the distributor fitting 46, the holes for inlets and outlets 44, 47 and 62 are cut in the bottom of the mattress 40 prior to insertion of the distributor fitting 46.

[0039] Other aspects of the invention are provided by the base and frame assembly 52 seen in Figs. 7 and 8. The assembly 52 is formed by a wooden core that includes a pedestal 89 with cross members 93, the deck 58, and risers 94 within the head 50 and foot 51 of the assembly 52 that extend upwardly above the ends of the mattress 40 and over the top membrane. These risers 94 are formed with cavities 87 and 88 for housing air relief valves 49 and air piping 55 and 56. A cap 95 of nonporous, water-impervious material is attached to and covers the wood core. Where seams are found at the corners, smaller cap members 96 are used to cover any potential crevices. Portions of the cap 95 are bent around risers 94 to form depending lips 97 which hide interior pockets 98 in the head 50 and foot 51. These pockets 98 open downwardly towards the water line to receive loose folds of the top membrane of the mattress 40 as seen in Fig. 8. The sides of these pockets 98 are closed by the sidewalls 58a of the base and frame assembly 52 as seen in Fig. 7. In this embodiment the head 50 and foot 51 have been formed in the same configuration to save manufacturing expense, but only one of these, preferably the head 50, need be used for evacuating air, and the foot 51 could be shorter in height.

[0040] Still referring to Fig. 8, the air relief valves 49 and air suction pipe 56 are connected into the mattress 40 by inserting a fitting through a hole cut in the top membrane of the mattress 40 for that purpose. A first locknut 99 is used to attach the membrane to the fitting, and a second locknut 100 is used to fasten the fitting to a portion of the cap 95 defining the top of the pocket 98 in foot 51. Pipe couplings 101 are then used to connect a pipe 102 between a fitting 103 secured to the mattress and a fitting 109 that receives that valve cap 53.

[0041] The cap 95 for the bed and frame assembly 52 is preferably made of stainless steel, to provide an exterior for the waterbed that can be easily cleaned and sterilized, when used in medical facilities. Acrylic polymeric materials can also be used for the cap 95. The ends of the base and frame assembly 52 include vents 104 to allow heat from the pumps to escape. A layer of soundproofing material 105 is used to line the interior of the base and frame assembly 52 to muffle the sound of the pumps.

[0042] The water pump 43, the air pump 54, and a heater (not shown in Figs. 7-9 are electrically powered through cables 106 extending from control unit 107. This control unit 107 includes pneumatically actuated electrical switches (not shown) which are controlled from a control panel 108 on top of head 50 of the base and frame assembly 52 as seen in Fig. 7. This control panel 108 is connected through pneumatic lines 110 in Fig. 8 to the switches in the control unit 107.

[0043] Although the description has included many details to enable those skilled in the art to carry out the best mode of the invention, it should be apparent to these persons that other embodiments could be constructed that utilize the principles of the invention and that these might differ in some respects from the preferred embodiments. Therefore, to fairly define the scope of which I regard as my invention, I have made the following claims.

Claims

1. A method of imparting the pleasurable aspects of water massage to a user for rest and relaxation purposes comprising the steps of: supporting an entire person on a top membrane of an enclosure containing a layer of heated water of sufficient standing depth to support the entire person in a floating manner; drawing the heated water out of the enclosure; introducing the heated water under pressure into an interior of the enclosure to develop water jets that are laterally spaced apart and aimed upwardly to impinge upon the underside of the top membrane on which the person is supported to produce jet pressure massage effects on a plurality of areas of the person, characterized by the steps of introducing the heated water as an array of laterally spaced water jets into or adjacent the bottom of the layer of heated water in the enclosure and imparting sufficient pressure upon the heated water withdrawn from the enclosure to drive the water jets upwardly through the standing depth of the layer of heated water to impinge on the underside of the top membrane for producing a rippling effect under the person thereon.

2. The method of claim 1, characterized by the steps of splitting one of the water jets into smaller streams, laterally spacing the smaller streams apart, aiming the smaller streams upwardly towards the underside of the top membrane and imparting sufficient pressure to the water jets to cause the smaller streams to travel through the standing depth of the layer of water to reach a plurality of areas of the membrane which are adapted to support shoulders, back and legs of the person.

3. The method of claim 2, wherein the enclosure has a bottom, a head end and a foot end, characterized by the step of circulating the heated water in a direction along the body of the `person and across the smaller air streams, wherein the heated water is circulated from a water inlet located in the bottom and towards the head end of the enclosure to a water outlet located in the bottom and towards a foot end of the enclosure.

4. The method of claim 1, 2 or 3, characterized by the step of introducing air into the water drawn from the enclosure to aspirate the jets that are introduced into the interior of the enclosure to impinge upon the underside of the top membrane.

5. The method of claim 4, characterized by the step of maintaining a preselected amount of air pressure within the enclosure by exhausting excess air accumulated therein from the aspirated water jets.

6. The method of claim 5, characterized by the step of recirculating the excess air exhausted from the enclosure through an air pump connected to introduce the air into the interior of the enclosure.

7. The method of any of the preceding claims, characterized by the step of introducing air into the interior of the enclosure as a supply air stream that is separated from the water jets, and further comprising the step of distributing the supply air stream as smaller air streams that are laterally spaced apart and are directed upwardly and generally parallel to the water jets to form an aspirated layer of water along the underside of the top membrane.

8. A waterbed for circulating streams of pressurized heated water to massage a person supported thereon, the waterbed including an enclosure (4) having a top membrane of water-impervious material for supporting the person in a floating manner on a volume of water that extends at least the length and width of the person, base means (2) for supporting the enclosure (4) in an elevated position, a number of water inlet means (31) and at least one water outlet (32) supported by said base means (2) in an elevated position and with the water inlet means (31) being arranged for directing streams of pressurized heated water upwardly towards the underside of the top membrane and the water outlet (32) being operable for conveying heated water out of the enclosure (4), a water pump (11) in fluid communication with the water outlet (32) to draw the water from the enclosure (4) and in fluid communication with the water inlet means (31) to develop jet streams of heated water to impinge on the underside of the top membrane, characterized by a retainer plate (8) of water-impervious material positioned between the base means (2) and the enclosure (4), said water inlet means comprising a number of water inlets (31) sealingly clamped to said retainer plate (8) and arranged to open into the interior of the enclosure (4) through respective openings in the bottom membrane thereof, said water pump comprising a single pump (11) adapted to impart sufficient pressure to the streams of heated water entering the enclosure (4) through the water inlets (31) to drive the streams from the bottom membrane of said enclosure (4) up through the water therein to impinge on the underside of the top membrane.

9. The waterbed of claim 8, characterized in that the retainer plate comprises a cap (12) of nonporous, water-impervious material that encases exposed exterior portions of the base means (2).

10. The waterbed of claim 9, characterized in that the cap is made of metal such as stainless steel.

11. The waterbed of claim 8, 9 or 10, characterized in that the pump (11) is connected to the inlet means (31) and outlet (32) through piping which hangs from the retainer plate (12) and is also supported by the base means (2).

12. The waterbed of any of claims 8 to 11, characterized by air inlet means (41) coupled to the piping that conveys water to the water pump (43) for recirculation, for allowing air to be drawn into the water pump (43), and wherein the water pump (43) is operable to generate a supply of water mixed with air to the water inlets (44) so that jets of aspirated water are directed upwardly towards the underside of the enclosure (4).

13. The waterbed of claim 12, characterized in that a portion (50, 51) of the base means (2) extends above and overhangs the top membrane, said waterbed including air relief means (49) anchored to the base means (2), coupled to a fold of the top membrane that extends above the water and opening into the interior of the enclosure to evacuate air therefrom.

14. The waterbed of claim 13, characterized in that the fold in top membrane is one of a plurality of folds to permit air to be received and collected in the enclosure (4) above the water and under a person supported on the top membrane, the overhanging portion of the base means (2) comprising a head (50) forming a downwardly opening pocket in which a fold of the top membrane is received, the pocket being hidden from view behind a depending portion of the head (50), an air pump (54) being disposed within the base means (2) and connected through an inlet (62) to the interior of the enclosure (4) to introduce pressurized air therein, and air relief means (49) disposed in the head (50) of the base means (2) and extending into the pocket formed thereby, the air relief means (49) being coupled to the enclosure (4) and opening into the interior of the enclosure (4) to evacuate air therefrom.

15. The waterbed of claim 14, characterized by means (56) connecting the air relief means (49) to the air pump (54) to permit recirculation of air being evacuated from the enclosure (4).

16. The waterbed of any of claims 8 to 15, characterized by air inlets (62) opening into the interior of the enclosure (4) and aimed for directing streams of pressurized air upwardly towards the underside of the top membrane, and an air pump (54) disposed in the base means (2) and connected to supply pressurized air to the air inlets (62).

17. The waterbed of any of claims 8 to 16, characterized by a distributor fitting (46) adapted for disposition in the enclosure (4) and for connection to water inlet piping, water outlet piping and air inlet piping to provide in said enclosure (4) an aspirated body of water, said distributor fitting (46) including two opposite sides each facing away from the other, two inlet openings (44) for water formed in a first one of the sides for connection to the water inlet piping, inlet opening (62) for air formed in the first one of the sides for connection to the air inlet piping, an outlet opening (47) for water formed in the first one of the sides and adapted for connection to the water outlet piping to convey water out of the interior of the enclosure (4) when the distributor fitting (46) is disposed therein, a plurality of outlet openings (76) for water formed in a second one of the sides, the plurality of outlet openings (76) for water being relatively smaller and more numerous than the two inlet openings (44) for water to divide water supply streams into smaller streams, a plurality of outlet opening (77) for air formed in the second one of the sides, the plurality of outlet openings (77) for air being relatively smaller than the inlet opening (62) for air to divide an air supply stream into smaller streams, said fitting (46) having a first chamber (74) in communication with the two inlet openings (44) and with the plurality of outlet openings (76) for conveying water therebetween, a second chamber (72) in communication with the air inlet opening (62) and with the plurality of outlet openings (77) for air for conveying air therebetween, and an open compartment (71) around the water outlet opening (47) in the first one of the sides to protect the streams of air and water from the effects of drawing water through the water outlet opening (47) in the first one of the sides.

18. The waterbed of claim 17, characterized in that said second chamber (72) is rectangular and wherein said first chamber (74) is formed to loop around said second chamber (72).

19. The waterbed of claim 17 or 18, characterized in that the distributor fitting comprises top and bottom sides and exterior sidewalls connecting the top and bottom sides with two of the exterior sidewalls opposing each other, a looped divider (73) extending between the top and bottom sides and disposed interior of the sidewalls to define the first and second chambers (72, 74) within the distributor fitting (46), a transverse divider (75) being spaced from the looped divider (73), extending between the top and bottom sides and connecting the two opposing sidewalls to enclose one of the chambers (74) and to form the open compartment (71) toward one end of the distributor fitting (46).

Ansprüche

1. Verfahren, um einem Benutzer die angenehmen Aspekte einer Wassermassage zwecks Erholung und Entspannung zukommen zu lassen, umfassend die folgenden Schritte: Lagerung der gesamten Person auf einer oberen Haut einer Umhüllung, die eine Schicht erwärmtes Wasser enthält, das tief genug ist, um die gesamte Person schwimmend darauf zu tragen; Abziehen des erwärmten Wassers aus der Umhüllung; Einleiten des erwärmten Wassers unter Druck in das Innere der Umhüllung, um Wasserstrahlen zu erzeugen, die seitlich voneinander beabstandet und nach oben gerichtet sind, so daß sie auf die Unterseite der oberen Haut, auf der die Person liegt, auftreffen und auf einer Vielzahl von Stellen an der Person Druckstrahlmassageeffekte erzeugen, dadurch gekennzeichnet, daß das erwärmte Wasser als Anordnung seitlich voneinander beabstandeter Wasserstrahlen in oder neben den Boden der Schicht von erwärmtem Wasser in der Umhüllung eingeleitet wird, und daß das aus der Umhüllung abgezogene Wasser mit ausreichend Druck beaufschlagt wird, um die Wasserstrahlen nach oben durch die gesamte Schicht erwärmtes Wasser zu treiben, so daß sie auf die Unterseite der oberen Haut auftreffen, um unter der darauf liegenden Person kleine Wellen zu erzeugen.

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß einer der Wasserstrahlen in kleinere Ströme aufgespalten wird, daß die kleineren Ströme seitlich voneinander beabstandet werden, daß die kleineren Ströme nach oben gegen die Unterseite der oberen Haut gerichtet werden, und daß die Wasserstrahlen mit ausreichend Druck beaufschlagt werden, um zu bewirken, daß die kleineren Ströme durch die gesamte Tiefe der Wasserschicht wandern, bis sie eine Vielzahl von Stellen auf der Haut bzw. Folie erreichen, die geeignet sind, Schultern, Rücken und Beine der Person abzustützen.

3. Verfahren nach Anspruch 2, bei dem die Umhüllung einen Boden, ein Kopfende und ein Fußende besitzt, dadurch gekennzeichnet, daß das erwärmte Wasser in einer Richtung längs des Körpers der Person und quer zu den kleineren Luftströmen zirkuliert wird, wobei das erwärmte Wasser von einem im Boden gelegenen Wassereinlaß in Richtung zu dem Kopfende der Umhüllung zu einem im Boden gelegenen Wasserauslaß und in Richtung zu einem Fußende der Umhüllung geleitet wird.

4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß Luft in das aus der Umhüllung abgezogene Wasser eingeleitet wird, um die in das Innere der Umhüllung eingeleiteten Wasserstrahlen anzusaugen, damit sie auf die Unterseite der oberen Haut auftreffen.

5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der Luftdruck in der Umhüllung auf einem vorgewählten Wert gehalten wird, indem überschüssige Luft, die sich darin angesammelt hat, von den angesaugten Wasserstrahlen abgelassen wird.

6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die aus der Umhüllung abgelassene überschüssige Luft mittels einer Luftpumpe wieder in Umlauf gebracht wird, die angeschlossen ist, um die Luft wieder ins Innere der Umhüllung einzuleiten.

7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Luft ins Innere der Umhüllung als Versorgungsluftstrom eingeleitet wird, der von den Wasserstrahlen getrennt ist, und des weiteren dadurch gekennzeichnet, daß der Versorgungsluftstrom in Form kleinerer Luftströme verteilt wird, die seitlich voneinander beabstandet sind und nach oben und im allgemeinen parallel zu den Wasserstrahlen gerichtet sind, so daß entlang der Unterseite der oberen Haut eine angesaugte Schicht Wasser entsteht.

8. Wasserbett, in dem Ströme von unter Druck stehendem, erwärmtem Wasser zirkulieren, um eine darauf liegende Person zu massieren, wobei das Wasserbett folgendes umfaßt: eine Umhüllung (4) mit einer oberen Haut aus wasserundurchlässigem Material, um die Person schwimmend auf einem Volumen Wasser zu tragen, das sich mindestens über die Länge und die Breite der Person erstreckt, eine Basiseinrichtung (2), die die Umhüllung (4) in einer erhöhten Position trägt, eine Reihe von Wassereinlaßeinrichtungen (31) und mindestens einen Wasserauslaß (32), die auf der Basiseinrichtung (2) in einer erhöhten Position gelagert sind, und wobei die Wassereinlaßeinrichtung so angeordnet ist, daß sie Ströme von unter Druck stehendem erwärmtem Wasser nach oben gegen die Unterseite der oberen Haut leitet, und wobei der Wasserauslaß (32) so eingesetzt werden kann, daß er erwärmtes Wasser aus der Umhüllung (4) herausleitet, eine Wasserpumpe (11), die mit dem Wasserauslaß (32) in Flüssigverbindung steht, um das Wasser von der Umhüllung (4) abzuziehen, und die mit der Wassereinlaßeinrichtung (31) in Flüssigverbindung steht, um strahlförmige Ströme von erwärmtem Wasser zu bilden, die auf die Unterseite der oberen Haut auftreffen, gekennzeichnet durch eine Halteplatte (8) aus wasserundurchlässigem Material, die zwischen der Basiseinrichtung (2) und der Umhüllung (4) angeordnet ist, wobei die Wassereinlaßeinrichtung eine Reihe von Wassereinlässen (31) aufweist, die dicht schließend an der Halteplatte (8) festgeklemmt sind und so angeordnet sind, daß sie durch entsprechende Öffnungen in der unteren Haut ins Innere der Umhüllung (4) münden, und wobei die Wasserpumpe eine einzelne Pumpe (11) umfaßt, die die die Ströme von erwärmtem Wasser, die durch die Wassereinlässe (31) in die Umhüllung (4) gelangen, mit ausreichend Druck beaufschlagt, um die Ströme von der unteren Haut der Umhüllung (4) durch das Wasser hindurch nach oben zu treiben, wo sie auf die Unterseite der oberen Haut auftreffen.

9. Wasserbett nach Anspruch 8, dadurch gekennzeichnet, daß die Halteplatte eine Kappe (12) aus nichtporösem, wasserundurchlässigem Material umfaßt, die die freiliegenden äußeren Abschnitte der Basiseinrichtung (2) umschließt.

10. Wasserbett nach Anspruch 9, dadurch gekennzeichnet, daß die Kappe aus Metall wie zum Beispiel Edelstahl besteht.

11. Wasserbett nach Anspruch 8, 9 oder 10, dadurch gekennzeichnet, daß die Pumpe (11) mit der Einlaßeinrichtung (31) und dem Auslaß (32) über ein Rohr verbunden ist, das von der Halteplatte (12) herabhängt und außerdem auf der Basiseinrichtung (2) aufliegt.

12. Wasserbett nach einem der Ansprüche 8 bis 11, gekennzeichnet durch eine Lufteinlaßeinrichtung (41), die mit dem Rohr verbunden ist, das Wasser zu der Wasserpumpe (43) befördert, die es wieder in Umlauf bringt, wobei die Lufteinlaßeinrichtung dafür sorgt, daß Luft, in die Wasserpumpe (43) gezogen wird, und wobei die Wasserpumpe (43) eine bestimmte mit Luft vermischte Menge Wasser zu den Wassereinlässen (44) befördern kann, so daß jeweils ein Strahl von angesaugtem Wasser nach oben gegen die Unterseite der Umhüllung (4) gerichtet wird.

13. Wasserbett nach Anspruch 12, dadurch gekennzeichnet, daß ein Abschnitt (50, 51) der Basiseinrichtung (2) oberhalb der oberen Haut verläuft und über dieser hängt, wobei das Wasserbett eine Luftablaßeinrichtung (49) umfaßt, die an der Basiseinrichtung (2) verankert ist, mit einer über dem Wasser verlaufenden Falte der oberen Haut verbunden ist und ins Innere der Umhüllung mündet, um Luft daraus abzuziehen.

14. Wasserbett nach Anspruch 13, dadurch gekennzeichnet, daß die Falte in der oberen Haut eine von einer Vielzahl von Falten ist, die es erlauben, daß Luft in der Umhüllung (4) über dem Wasser und unter einer auf der oberen Haut liegenden Person aufgenommen und gesammelt wird, wobei der überhängende Abschnitt der Basiseinrichtung (2) einen Kopf (50) umfaßt, der eine sich nach unten öffnende Tasche bildet, in der eine Falte der oberen Haut aufgenommen ist, wobei die Tasche hinter einem herabhängenden Abschnitt des Kopfes (50) verborgen ist, eine Luftpumpe (54), die in der Basiseinrichtung (2) angeordnet ist und durch einen Einlaß (62) mit dem Inneren der Umhüllung (4) verbunden ist, um unter Druck stehende Luft in diese einzuleiten, und eine Luftablaßeinrichtung (49), die in dem Kopf (50) der Basiseinrichtung (2) angeordnet ist und sich in die dadurch gebildete Tasche erstreckt, wobei die Luftablaßeinrichtung (49) mit der Umhüllung (4) verbunden ist und ins Innere der Umhüllung (4) mündet, um Luft daraus abzulassen.

15. Wasserbett nach Anspruch 14, gekennzeichnet durch eine Einrichtung (56), die die Luftablaßeinrichtung (49) mit der Luftpumpe (54) verbindet, damit die aus der Umhüllung (4) abgelassene Luft wieder in Umlauf gebracht werden kann.

16. Wasserbett nach einem der Ansprüche 8 bis 15, gekennzeichnet durch Lufteinlässe (62), die in das Innere der Umhüllung (4) münden und so ausgerichtet sind, daß sie Ströme von unter Druck stehender Luft nach oben gegen die Unterseite der oberen Haut lenken, und eine Luftpumpe (54), die in der Basiseinrichtung (2) angeordnet ist und so angeschlossen ist, daß sie unter Druck stehende Luft zu den Lufteinlässen (62) leitet.

17. Wasserbett nach einem der Ansprüche 8 bis 16, gekennzeichnet durch ein Verteilerelement (46), das in der Umhüllung (4) angeordnet werden kann und mit dem Wassereinlaßrohr, dem Wasserauslaßrohr und dem Lufteinlaßrohr verbunden werden kann, um in der Umhüllung (4) ein angesaugtes Volumen Wasser zu bilden, wobei das Verteilerelement (46) zwei gegenüberliegende Seiten aufweist, die jeweils voneinander weg gerichtet sind, zwei Wassereinlaßöffnungen (44), die zwecks Anschluß an das Wassereinlaßrohr in einer ersten der Seiten vorgesehen sind, eine Lufteinlaßöffnung (62), die zwecks Anschluß an das Lufteinlaßrohr in der ersten der Seiten vorgesehen ist, eine Wasserauslaßöffnung (47), die in der ersten der Seiten vorgesehen ist und mit dem Wasserauslaßrohr verbunden werden kann, um Wasser aus dem Inneren der Umhüllung (4) abzulassen, wenn das Verteilerelement (46) darin angeordnet ist, eine Vielzahl von Wasserauslaßöffnungen (76) in einer zweiten der Seiten, wobei die Vielzahl von Wasserauslaßöffnungen (76) im Verhältnis kleiner und zahlreicher ist als die zwei Wassereinlaßöffnungen (44), die die zugeführten Wasserströme in kleinere Ströme unterteilen, eine Vielzahl von Luftauslaßöffnungen (77), die in der zweiten der Seiten vorgesehen sind, wobei die Vielzahl der Luftauslaßöffnungen (77) im Verhältnis kleiner ist als die Lufteinlaßöffnung (62), die den zugeführten Luftstrom in kleiner Ströme unterteilt, wobei das Element(46) eine erste Kammer (74) besitzt, die mit den beiden Einlaßöffnungen (44) und mit der Vielzahl von Auslaßöffnungen (76) in Verbindung steht, um Wasser dazwischen hindurchzuleiten, eine zweite Kammer (72), die mit der Lufteinlaßöffnung (62) und mit der Vielzahl der Luftauslaßöffnungen (77) in Verbindung steht, um Luft dazwischen hindurchzuleiten, und eine offene Kammer (71) um die Wasserauslaßöffnung (47) in der ersten der Seiten, die die Ströme von Luft und Wasser vor den Effekten schützt, die entstehen, wenn Wasser durch die Wasserauslaßöffnung (47) in der ersten der Seiten gezogen wird.

18. Wasserbett nach Anspruch 17, dadurch gekennzeichnet, daß die zweite Kammer (72) rechteckig ist, und daß die erste Kammer (74) so ausgebildet ist, daß sie sich um die zweite Kammer (72) legt.

19. Wasserbett nach Anspruch 17 oder 18, dadurch gekennzeichnet, daß das Verteilerelement eine Oberseite und eine Unterseite sowie äußere Seitenwände umfaßt, die die Ober- und Unterseite jeweils mit zwei der einander gegenüberliegenden äußeren Seitenwände verbindet, einen schleifenförmigen Teiler (73), der zwischen der Oberseite und der Unterseite verläuft und innerhalb der Seitenwände angeordnet ist, um die erste und zweite Kammer (72, 74) innerhalb des Verteilerelementes (46) zu begrenzen, wobei ein quer verlaufender Teiler (75) von dem schleifenförmigen Teiler (73) beabstandet ist, zwischen der Oberseite und der Unterseite verläuft und die beiden einander gegenüberliegenden Seitenwände miteinander verbindet, um eine der Kammern (74) zu umschließen und die offene Kammer (71) bei dem einen Ende des Verteilerstutzens (46) auszubilden.

Revendications

1. Procédé pour communiquer les aspects agréables de l'hydromassage à un utilisateur à des fins de repos et de relaxation, comprenant les étapes suivantes : soutien de toute une personne sur une membrane supérieure d'une enceinte contenant une couche d'eau chauffée de profondeur fixe suffisante pour soutenir toute la personne de manière flottante, évacuation de l'eau chauffée hors de l'enceinte, introduction de l'eau chauffée sous pression à l'intérieur de l'enceinte pour développer des jets d'eau qui sont écartés latéralement les uns des autres et qui sont dirigés vers le haut pour frapper le côté inférieur de la membrane supérieure sur laquelle la personne est soutenue pour produire des effets de massage par pression de jets sur une multiplicité de zones de la personne, caractérisé par les étapes consistant à introduire l'eau chauffée sous forme d'une série de jets d'eau distants latéralement dans ou en position adjacente au fond de la couche d'eau chauffée dans l'enceinte et à communiquer une pression suffisante à l'eau chauffée retirée de l'enceinte pour entraîner les jets d'eau vers le haut à travers la profondeur fixe de la couche d'eau chauffée pour frapper le côté inférieur de la membrane supérieure pour produire un effet d'ondulation sur la personne située sur celle-ci.

2. Procédé selon la revendication 1, caractérisé par les étapes consistant à diviser l'un des jets d'eau en courants plus petits, à écarter latéralement les uns des autres les courants plus petits, à diriger les courants plus petits vers le haut en direction du côté inférieur de la membrane supérieure et à communiquer une pression suffisante aux jets d'eau pour amener les courants plus petits à traverser la profondeur fixe de la couche d'eau pour atteindre une multiplicité de zones de la membrane qui sont conçues pour soutenir les épaules, le dos et les jambes de la personne.

3. Procédé selon la revendication 2, dans lequel l'enceinte a un fond, une extrémité de tête et une extrémité de pied, caractérisé par l'étape consistant à faire circuler l'eau chauffée dans une direction le long du corps de la personne et transversalement aux courants d'air plus petits, dans lequel l'eau chauffée est amenée à circuler depuis une entrée d'eau située dans le fond et en direction de l'extrémité de tête de l'enceinte jusqu'à une sortie d'eau située dans le fond et en direction de l'extrémité de pied de l'enceinte.

4. Procédé selon la revendication 1, 2 ou 3, caractérisé par l'étape consistant à introduire de l'air dans l'eau retirée de l'enceinte pour aspirer les jets qui sont introduits à l'intérieur de l'enceinte afin qu'ils frappent le côté inférieur de la membrane supérieure.

5. Procédé selon la revendication 4, caractérisé par l'étape consistant à maintenir une quantité présélectionnée de pression d'air à l'intérieur de l'enceinte par évacuation de l'air en excès accumulé dans celle-ci à partir des jets d'eau aspirés.

6. Procédé selon la revendication 5, caractérisé par l'étape consistant à recirculer l'air en excès évacué de l'enceinte par une pompe à air branchée de manière à introduire l'air dans l'intérieur de l'enceinte.

7. Procédé selon l'une quelconque des revendications précédentes, caractérisé par l'étape consistant à introduire de l'air à l'intérieur de l'enceinte sous forme d'un courant d'air d'alimentation qui est séparé des jets d'eau, et comprenant en outre l'étape consistant à distribuer le courant d'air d'alimentation sous forme de courants d'air plus petits qui sont écartés latéralement les uns des autres et qui sont dirigés vers le haut et sensiblement parallèlement aux jets d'eau pour former une couche d'eau aspirée le long du côté inférieur de la membrane supérieure.

8. Lit d'eau pour faire circuler des courants d'eau chauffée sous pression pour masser une personne soutenue sur celui-ci, le lit d'eau comprenant une enceinte (4) comportant une membrane supérieure en matériau imperméable à l'eau pour soutenir la personne de manière flottante sur un volume d'eau qui s'étend au moins sur la longueur et la largeur de la personne, une base (2) pour soutenir l'enceinte (4) en position relevée, un certain nombre de dispositifs d'entrée d'eau (31) et au moins une sortie d'eau (32) soutenus par ladite base (2) en position relevée, les dispositifs d'entrée d'eau (31) étant agencés pour diriger des courants d'eau chauffée sous pression vers le haut en direction du côté inférieur de la membrane supérieure et la sortie d'eau (32) pouvant fonctionner de manière à transporter l'eau chauffée hors de l'enceinte (4), une pompe à eau (11) en communication par fluide avec la sortie d'eau (32) pour retirer l'eau de l'enceinte (4) et en communication par fluide avec les dispositifs d'entrée d'eau (31) pour développer des courants d'eau chauffée en jets pour frapper le côté inférieur de la membrane supérieure, caractérisé par une plaque de retenue (8) en matériau imperméable à l'eau placée entre la base (2) et l'enceinte (4), lesdits dispositifs d'entrée d'eau comprenant un certain nombre d'entrées d'eau (31) fixées de manière étanche à ladite plaque de retenue (8) et agencées pour déboucher à l'intérieur de l'enceinte (4) par des ouvertures respectives dans la membrane inférieure de celle-ci, ladite pompe à eau comprenant une pompe unique (11) conçue pour communiquer une pression suffisante aux courants d'eau chauffée qui pénètrent dans l'enceinte (4) par les entrées d'eau (31) pour entraîner les courants depuis la membrane inférieure de ladite enceinte (4) vers le haut à travers l'eau qui s'y trouve pour frapper le côté inférieur de la membrane supérieure.

9. Lit d'eau selon la revendication 8, caractérisé en ce que la plaque de retenue comprend un couvercle (12) en matériau non poreux imperméable à l'eau qui entoure les parties extérieures exposées de la base (2).

10. Lit d'eau selon la revendication 9, caractérisé en ce que le couvercle est constitué par un métal tel que l'acier inoxydable.

11. Lit d'eau selon la revendication 8, 9 ou 10, caractérisé en ce que la pompe (11) est reliée aux dispositifs d'entrée (31) et à la sortie (32) par une tuyauterie qui pend de la plaque de retenue (8) et qui est aussi soutenue par la base (2).

12. Lit d'eau selon l'une quelconque des revendications 8 à 11, caractérisé par un dispositif d'entrée d'air (41) couplé à la tuyauterie qui transporte l'eau à la pompe à eau (43) pour la recirculation, pour permettre à l'air d'être entraîné dans la pompe à eau (43), et dans lequel la pompe à eau (43) est capable de fonctionner pour produire une alimentation d'eau mélangée à de l'air pour les entrées d'eau (44) de sorte que des jets d'eau aspirée sont dirigés vers le haut en direction du côté inférieur de l'enceinte (4).

13. Lit d'eau selon la revendication 12, caractérisé en ce qu'une partie (50, 51) de la base (2) s'étend au-dessus et surplombe la membrane supérieure, ledit lit d'eau comprenant un dispositif de purge d'air (49) ancré à la base (2), couplé à un pli de la membrane supérieure qui s'étend au-dessus de l'eau et qui débouche à l'intérieur de l'enceinte pour en évacuer l'air.

14. Lit d'eau selon la revendication 13, caractérisé en ce que le pli de la membrane supérieure est un pli parmi une multiplicité de plis destinés à permettre à l'air d'être reçu est recueilli dans l'enceinte (4) au-dessus de l'eau et sous une personne soutenue sur la membrane supérieure, la partie en surplomb de la base (2) comprenant une tête (50) formant une poche ouvrant vers le bas dans laquelle un pli de la membrane supérieure est reçu, la poche étant dissimulée à la vue derrière une partie pendante de la tête (50), une pompe à air (54) étant disposée à l'intérieur de la base (2) et étant reliée par une entrée (62) à l'intérieur de l'enceinte (4) pour y introduire de l'air sous pression, et un dispositif de purge d'air (49) étant disposé dans la tête (50) de la base (2) et s'étendant dans la poche formée par celle-ci, le dispositif de purge d'air (49) étant couplé à l'enceinte (4) et débouchant à l'intérieur de l'enceinte (4) pour en évacuer l'air.

15. Lit d'eau selon la revendication 14, caractérisé par un dispositif (56) qui relie le dispositif de purge d'air (49) à la pompe à air (54) pour permettre la recirculation de l'air qui est évacué de l'enceinte (4).

16. Lit d'eau selon l'une quelconque des revendications 8 à 15, caractérisé par des entrées d'air (62) débouchant à l'intérieur de l'enceinte (4) et destinées à diriger des courants d'air sous pression vers le haut en direction du côté inférieur de la membrane supérieure, et par une pompe à air (54) disposée dans la base (2) et branchée de manière à fournir de l'air sous pression aux entrées d'air (62).

17. Lit d'eau selon l'une quelconque des revendications 8 à 16, caractérisé par un ensemble distributeur (46) conçu pour être disposé dans l'enceinte (4) et pour être relié à la tuyauterie d'entrée d'eau, à la tuyauterie de sortie d'eau et à la tuyauterie d'entrée d'air pour fournir dans ladite enceinte (4) un corps d'eau aspiré, ledit ensemble distributeur (46) comprenant deux côtés opposés tournés chacun dans un sens opposé à l'autre, deux ouvertures d'entrée (44) pour l'eau, formées dans un premier des côtés et destinées à être reliées à la tuyauterie d'entrée d'eau, une ouverture d'entrée (62) pour l'air, formée dans le premier des côtés et destinée à être reliée à la tuyauterie d'entrée d'air, une ouverture de sortie (47) pour l'eau, formée dans le premier des côtés et destinée à être reliée à la tuyauterie de sortie d'eau pour transporter l'eau hors de l'intérieur de l'enceinte (4) lorsque l'ensemble distributeur (46) est disposé dans celle-ci, une multiplicité d'ouvertures de sortie (76) pour l'eau, formées dans un second des côtés, la multiplicité d'ouvertures de sortie (76) pour l'eau étant relativement plus petites et plus nombreuses que les deux ouvertures d'entrée (44) pour l'eau, pour diviser les courants d'apport d'eau en courants plus petits, une multiplicité d'ouvertures de sortie (77) pour l'air, formées dans le second des côtés, la multiplicité des ouvertures de sortie (77) pour l'air étant relativement plus petites que l'ouverture d'entrée (62) pour l'air, pour diviser un courant d'apport d'air en courants plus petits, ledit ensemble (46) ayant une première chambre (74) en communication avec les deux ouvertures d'entrée (44) et avec la multiplicité d'ouvertures de sortie (76) pour transporter l'eau entre elles, une seconde chambre (72) en communication avec l'ouverture d'entrée d'air (62) et avec la multiplicité d'ouvertures de sortie (77) pour l'air, pour transporter l'air entre elles, et un compartiment ouvert (71) autour de l'ouverture de sortie d'eau (47) dans le premier des côtés pour protéger les courants d'air et d'eau contre les effets du soutirage d'eau par l'ouverture de sortie d'eau (47) dans le premier des côtés.

18. Lit d'eau selon la revendication 17, caractérisé en ce que ladite seconde chambre (72) est rectangulaire et dans lequel ladite première chambre (74) est formée de manière à entourer ladite seconde chambre (72).

19. Lit d'eau selon la revendication 17 ou 18, caractérisé en ce que l'ensemble distributeur comprend des côtés supérieur et inférieur et des parois latérales extérieures qui relient les côtés supérieur et inférieur à deux des parois latérales extérieures opposées l'une à l'autre, un diviseur bouclé (73) qui s'étend entre les côtés supérieur et inférieur et qui est disposé à l'intérieur des parois latérales pour définir les première et seconde chambres (72, 74) à l'intérieur de l'ensemble distributeur (46), un diviseur transversal (75) distant du diviseur bouclé (73), qui s'étend entre les côtés supérieur et inférieur et qui relie les deux parois latérales opposées pour entourer l'une des chambres (74) et pour former le compartiment ouvert (71) en direction d'une extrémité de l'ensemble distributeur (46).

Drawing