EP0059123A1 - Matelas d'eau à amortisseur d'ondes - Google Patents

Matelas d'eau à amortisseur d'ondes Download PDF

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Publication number
EP0059123A1
EP0059123A1 EP82400160A EP82400160A EP0059123A1 EP 0059123 A1 EP0059123 A1 EP 0059123A1 EP 82400160 A EP82400160 A EP 82400160A EP 82400160 A EP82400160 A EP 82400160A EP 0059123 A1 EP0059123 A1 EP 0059123A1
Authority
EP
European Patent Office
Prior art keywords
water
panel
top wall
wave
mattress
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82400160A
Other languages
German (de)
English (en)
Inventor
James Patrick Mcmullan
Choule Joseph Sonu
Craig B. Leidersdorf
Arthur Anton Hochschild Iii
George Raymond Monzo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WESTERN CONTROL EQUIPMENT Co
Original Assignee
WESTERN CONTROL EQUIPMENT Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WESTERN CONTROL EQUIPMENT Co filed Critical WESTERN CONTROL EQUIPMENT Co
Publication of EP0059123A1 publication Critical patent/EP0059123A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses
    • A47C27/088—Fluid mattresses incorporating elastic bodies, e.g. foam
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses
    • A47C27/085—Fluid mattresses of liquid type, e.g. filled with water or gel

Definitions

  • Ordinary water bed mattresses consist of flat, horizontally disposed bladders established of imperforate flexible sheet material, such as polyvinylchloride film stock and volumes of water slackly filling the bladders.
  • Such mattress bladders commonly include or define flat, horizontal, vertically spaced top and bottom walls and vertical side walls about the perimeter of and extending between the top and bottom walls.
  • Mattresses of the character referred to above are commonly arranged atop and supported by flat, horizontal bed frame platforms and are retained about their vertical sides by rigid vertical frame-like walls or retainers about the perimeters of and projecting upwardly from the platforms.
  • the depth or vertical extent between the top and bottom walls of water bed mattresses should be such that when the bodies of persons using the mattresses are engaged on top of the mattresses, the weight of their bodies depresses the top walls downwardly and displaces the water within the mattresses to an extent that their bodies are buoyantly supported, without the top walls moving down and into engagement with or "bottoming out” on the bottom walls and their related platforms.
  • partitions and/or baffles arranged to stop horizontal movement of water
  • partitions and/or baffles arranged to stop horizontal movement of water
  • dampen waves has been limited to their ability to absorb and stop those minor horizontal compononents of water particle motion which is derected into and through them.
  • partitions and/or baffles must be and as a general rule are, fixed within their related mattresses in such a manner that they are held substantially stationary within the mattresses and so that wave energy directed into and absorbed by them is transmitted directly into the walls of the mattresses where it might be suitably dispersed and spent.
  • those wave dampening means provided by the prior art which are characterized by partitions and/or baffles fixed within their related mattresses operate to reduce waves compartmentalizing the mattresses throughout their horizontal planes so that the water therein is divided into many independent volumes of water, each of whcih is of insufficient volume and surface area to sustain formation of significant waves and wherein the effectiveness of such means to stop the propagation of waves throughout the entire planes of the mattresses is dependent upon the ability of the partitions and/or baffles to absorb and transmit wave energy to the exterior walls of the mattresses where it can be effectively spent.
  • wave dampening means consist of thick, soft, resilient pads of foam plastic arranged within water bed mattresses. Such pads are in the nature of fillers which reduce the depth and volume of free standing water in the mattresses in which waves can be generated and propagated.
  • thick, resilient filler pads to effectively attain the end sought to be attained, must be so thick and deep that they establish obstructions within the mattresses on or with which the top walls "bottom out” when depressed by the weight of persons engaged thereon and therefore prevent-the mattresses from establishing that sought after and desired conforming buoyed support which they are intended to afford.
  • suchfiller pads are sufficiently large, bulky and dimensionally stable so that their related mattresses cannot be collapsed and folded into neat, small and compact packages which are easy and economical to handle, transport and store, but necessarily remain large and bulky units which are inconvenient and costly to handle, transport and/or store.
  • the typical design wave selected for analysis is transitional in nature, with a water depth to wave length ratio of about 0.08, the water particle orbits are elliptical with the horizontal component predominant.
  • the maximum horizontal particle velocities presented in Table 1, below are in fact the maximum particle velocities induced by the wave form.
  • Vertical particle velocities are reduced in magnitude but follow a similar pattern of exponential decrease with depth.
  • the kinetic energy of a wave form is the sum of the kinetic energies of all particles undergoing orbital motion, with the kinetic energy of each particle being proportional to the square of its velocity. In consequence, particle kinetic energy decreases with increasing depth even more rapidly than particle velocity.
  • the energy distribution associated with horizontal particle velocities in the selected design wave is presented in Table 1, below, with energies normalized relative to the surface energy. It is apparent that approximately 60% of the kinetic energy is concentrated in the top half (11.43 cm ) of the water column. In consequence, any mechanism intended to dis- si pp ate wave energy is most effective if placed in the upper portion of the water column.
  • the maximum wave height which may exist in a particular circumstance is governed by the depth of water.
  • a free surface a surface subjected only to atmospheric pressure and not to additional restraints such as a vinyl cover
  • a maximum wave height on the order of 75% of the water depth is expected.
  • this depth limitation is extremely significant since it points to the fact that the maximum wave height in a water bed mattress may be reduced by decreasing the effective depth below the surface.
  • Another object and feature of our invention is to provide wave motion control means of the character referred to above wherein the water pervious flow-limiting panel impedes the orbital motion of water particles in waves through which it extends, thereby absorbing and dissipating the wave propagating energy thereof.
  • Still another object and feature of our invention is to provide wave motion control means of the character referred to above wherein the panel is normally in limited predetermined spaced relationship below the top wall of the mattress whereby the substantial free generation and propagation of small ripple-like, low energy waves can occur adiacent and across the top of the mattress and so that surface liveliness of the mattress and its capacity to rapidly conform to the shape of bodies engaged thereon is not adverselv affected.
  • a further object and feature of our invention is to provide a mattress structure of the qeneral character referred to above wherein the wave motion control means is spaced below the top wall of the mattress whereby the energy of the small, ripple-like waves allowed to propagate across the top of the mattress is limited in such a manner that those waves, when working and actinq upon the bodies of persons engaged on and supported by the top wall of the mattress, cannot impart forces upon those bodies which is likely to be discomforting or annovina.
  • Another object and feature of our invention is to provide a wave motion control means which includes a buoyant, flexible, flow limiting, water pervious structure within a related water bed mattress, which contacts the side and top walls of the mattress to inhibit wave reflection by both inhibiting vertical motion of the top wall by pre-tensioning the top wall, and impeding the vertical motion of water particles responding to reflection of the wave form off the side walls, thereby dissipating energy.
  • wave motion control means in a water bed mattress which operates effectively to dissipate wave energy at the periphery of the mattress by impeding the reflection of incident waves.
  • a typical water bed structure B comprising a bed frame F and a mattress M.
  • the bed frame F includes a rectangular outside frame 10 with vertical longitudinal and lateral extending side and end boards 11 and 12 and a flat horizontal mattress supporting platform P within the frame 10.
  • the platform P is arranged and supported within the frame 10 with its top surface spaced below the upper rim or top edge of the frame a distance substantially equal to the vertical extent or depth of the mattress M.
  • the upper portion of the frame 10, projecting above the platform P, defines or establishes a retainer R which occurs about the perimeter of and supports opposing related sides of the mattress M.
  • the mattress M comprises a flat, rectangular bladder O having a flat, horizontal bottom wall 15 in flat supported engagement with the platform P, flat vertical side and end walls 16 and 17 in flat supported and retained engagement with the inside surfaces of the retainer R and a normally flat horizontal top wall 18 in vertical spaced relationship above the bottom wall.
  • the retainer R and the mattress M will be considered to be about 23 cni in vertical extent and depth, which is close to the average vertical extent and depth for water bed retainers and mattresses.
  • the bladder O of the mattress M can be established of any one of several commercially available and suitable thin, soft, flexible, water-proof sheet materials.
  • the bladder can be established of flexible and supple polyvinylchloride sheet stock about 0.508 mm thick.
  • the sheet stock is cut to establish pieces which define certain of the walls of the bladder and the related pieces going up to make the bladder have edge portions which are joined together by heat sealing procedures or the like whereby the finished bladder is an integrated water-proof bladder structure.
  • the mattress bladder is provided with a normally closed water filling fitting (not shown) to facilitate introducing water into it or draining water from it, as circumstances require.
  • the bed structure B is provided with a flat blanket-type electric resistance heater unit H arranged in flat heat-conducting contact with and between the bottom wall 15 of the mattress and the platform P.
  • the heater H has an elongate power cord which, for example, is shown extending from the heater and thence downwardly through a vertical through opening in the platform P, from which it can be made to extend to some suitable heater control means and/or power source (not shown).
  • a water-proof liner be arranged between the mattress M and the platform P and retainer R, to prevent the escape of water from the bed structure, should the mattress rupture or leak.
  • Our invention comprises novel wave motion control structure C in combination with the mattress bladder O to dampen, control and/or modify the generation and propagation of waves in and throughout the upper and lower portions of the mattress M.
  • the wave motion control structure C first includes a normally flat, horizontal, flexible, resilient and compactable water-permeable flow limiting and/or restricting panel A arranged within the upper portion of the mattress bladder O in limited, predetermined spaced parallel relationship below the top wall 18 of the bladder.
  • the structure C in addition to the panel A, includes spacer- means S to normally maintain the panel in spaced relationship below the wall 18.
  • the panel A is a flat, horizontal open work pattern or net-like pad of thin, flexible and resilient garnetted polyester fibers.
  • the fibers are preferably fixed or bonded together as by a means of a suitable resinous cement to impart into the pad-like panel desired dimensional stability and memory.
  • the fibrous pad-like panel A presents a large open work pattern of fibers which is sufficiently water-permeable so that water can and will flow in and through it, substantially freely and without appreciable resistance when a slight pressure differential occurs across.it and is such that it establishes notable and increasing resistance to the flow of water through it when substantial pressure differentials, caused by externally applied dynamic forces, are imposed across it. Accordingly, the panel is such that it will not slow or impede slow, low energy movement of water such as convection currents generated by the heater unit H, but will resist and slow water forcibly urged through it, absorbing energy therefrom and dissipating it.
  • the panel A is preferably (normally) at least 2.54cm thick and can be as much as 10 cm or 13 cm thick, as desired or as circumstances require.
  • the panel A be sufficiently resilient, soft and formable so its resistance to being moved and formed under applied forces, during normal use of the-mattress, is normally insufficient to be sensed by persons engaged on the mattress, in the normal course of its use.
  • the panel A is buoyant and is such that if it is not held or retained down and in spaced relationship below the top walls 18 of the mattress, it will float up and into engagement with that wall of the mattress.
  • buoyancy can be imparted into the fibrous pad-like panel A by the use of light-weight and buoyant fibers, such as polypropylene fibers.
  • buoyancy can be imparted into the panel by the use of light-weight and buoyant resin cements to fix or bind the fibers together; and/or by the addition and inclusion of buoyant particulate materials, such as styrofoam beads, to the gar-netted and cemented fibrous mat structure.
  • buoyancy can be imparted into the panel by the fixing of buoyant float parts to the panel, as shown in the forms of our inventuon illustrated in Figs. 3 and 4 of the drawings.
  • gar-netted polyester fiber padding of the character described above is particularly suitable to establish the panel A in carrying out our invention
  • the spacer means S provided to normally maintain the panel A in predetermined spaced relationship with and below the top wall 18 of the bladder C can vary widely in practice.
  • the means S comprises a plurality of longitudinally and laterally spaced, soft, resilient, readily deformable spacer blocks 20 fixed to and projecting upwardly from the top of the panel A and establishing stopped engagement with the bottom surface of the top wall 18.
  • the blocks 20 are preferably established of the same gar-netted polyester fiber matting used to establish the panel A and can be fixed to the panel A in any desired manner.
  • the blocks 20 are tied to the panel by tie strings 21, but can, if desired, be cemented or otherwise fixed to the panel without departing from the spirit of our invention.
  • the spacer blocks 20 can be buoyant float-like units utilized to impart desired buoyancy into the panel structure.
  • the spacer blocks 20 be extremely soft and flexible so that they will readily deform and compact between the top wall 18 and the panel A, when the top wall 18 is forcibly urged downwardly and so that their presence beneath the top wall 18 cannot ordinarily be sensed by the users of the mattress.
  • the spacer means S' includes a plurality of laterally and longitudinally spaced elongate, vertical, ribbon-like hangers 23 of soft, flexible sheet plastic.
  • the hangers 23 have upper ends which can be fixed directly to the bottom of the panel A or can, as shown, be secured to pad-like float parts or elements 30 arranged adjacent the bottom of the panel A, to depend freely therefrom.
  • the lower end portions of the hangers are formed to define flexible sealed envelopes 25 in which volumes of high density particulate materials, such as bird shot 26, is deposited.
  • the shot-filled envelopes establish weights W at the lower ends of hangers which drop to and rest upon the bottom wall 15 of the mattress and thereby anchor the platform in desired vertical relationship above the bottom wall and below the top wall 18 of the mattress.
  • hangers 23 can be established of string or the like and that the weights w at the lower ends thereof can be established of metal washers or the like, without departing from the broader aspects and spirit of our invention.
  • the panel A is spaced below the top wall 18 of the mattress bladder 0 a predetermined limited distance so that the vertical column or depth of the water between the top wall 18 and the panel A is limited and capable of supporting only low amplitude waves.
  • spacing the panel A from 5cm to 7.6 cm below the top wall 18 of the mattress provides a vertical column or depth of water between the panel and the top wall which is sufficient to impart desired liveliness and suppleness to the portion of the mattress structure above the panel A and positions the panel a sufficient distance below the top wall 18 so that its presence is not readily felt or detected by persons using the mattress.
  • such positioning of the panel limits the wave motion that can be established and propagated throughout the upper portion of the mattress, above the platform A, to ripple-like lbw energy with, for example, a maximum height of approximately 2.54cm Cone inch) and which are so weak that they cannot noticeable move a person's body engaged atop the mattress and do not deliver work forces onto such a body which might be considered discomforting or annoying.
  • the panel A spaced below the top wall 18 of the mattress and above the bottom wall 15 thereof, impedes the propagation of all large amplitude waves due to its flow-restricting or limiting characteristics which slows the orbital motion of water particles in each wave, with resulting rapid decay of wave energy. Accordingly, the panel A appears and is believed to work to progressively alter and modify the forward progression of waves within the mattress in a controlled mannner and results in the rapid decay and termination of wave energy at a rate which is such that wave propagation within the mattress is not let to continue or progress to an extent that it is likely to work discomforting effect upon the bodies of persons engaged atop the mattress.
  • the panel A is not an impervious partition through which water cannot move and does not divide the volume of water in the bladder O into separate (upper and lower) volumes of water. Further, the panel A does not function to prevent or stop movement of the water within the bladder through which the panel extends and does not function to absorb energy from the water and conduct that energy to a part of the bladder 0, to be spent therein. Rather, the water pervious panel, of reticulate material, allows movement of water through it (affording some resistance thereto) and functions to stop, slow or alter that orbital movement of water particles associated with waves in the water within it and to thereby absorb and rapidly dissipate wave propagating energy in the water.
  • the panel A is a soft, easily compactible yielding and deformable element or part freely suspended in the water within the mattress bladder and is therefore such that it moves substantially freely in advance of and with water which is displaced and caused to move within the bladder and is therefore such that its presence"within the bladder does not afford undesired and readily noticeable resistance to the normal and desired working of the mattress structure in the course of its normal use.
  • our wave motion control means C includes wave damper means or structure D which functions to suppress the reflection of wave energy by or at the several vertical side and end walls 16 and 17 of the bladder O, which walls are backed and supported by the retainer R of the bed frame F and are stationary barriers with respect to waves propagated in the bladder 0.
  • the structure D functions to suppress the reflection of wave energy by pre-tensioning the top wall 18 of the bladder O so that the top wall yieldingly resists and/or restricts that vertical or upward movement of the surface of the water within the bladder which is necessary for the reflection of wave energy and further, induces energy dissipating turbulence in the water of standing waves which develop adjacent the side and end walls of the bladder and beneath the side edge portions of the top wall 18.
  • the structure D comprises a soft, resilient, water permeable and buoyant rectangular frame 40 arranged within the mattress bladder O to extend about the perimeter of the bladder and immersed within the water therein.
  • the frame 40 is shown as including elongate side and end rails 41 and 42 which occur adjacent to and extend parallel with related side and end walls 16 and 17 of the bladder O.
  • the rails 41 and 42 have outside surfaces 43 which oppose and preferably engage the inside surfaces of their related side and end walls 16 and 17; top surfaces 44 which oppose and establish stopped engagement with their related edge portions-of the top wall 18, bottom surfaces 45 opposing the bottom wall 15 and inside surfaces 46 which are disposed toward the volume of free water within the mattress through which the panel A extends.
  • the panel A and frame 40 are fixedly joined together to establish a unitary structure in which the frame 40 affords dimensional stability to the panel A, the panel affords dimensional stability to the frame 40 and wherein each of said elements or parts functions to normally maintain the other element or part in effective functioning disposition within the bladder O.
  • the upper portion of the frame 40 projects above the top plane of the panel A and engages the top wall 18 of the bladder and thereby functions to maintain the outer edge portions of the panel A in proper spaced relationship below the top wall 18. Accordingly, the frame 40 supplements and/or can be looked upon as a part of the spacer means S for the panel A.
  • the frame 40 is sufficiently buoyant so that it floats up into positive engagement with the top wall 18 and exerts sufficient force into and through that wall to move and to draw that free slack out of the top wall which normally occurs in properly filled common water bed mattresses.
  • the top wall 18 When the top wall 18 is drawn or pre-tensioned in the manner set forth above, the surface of the water in the mattress is restrained and held down by the top wall and the reflection of wave energy and development of standing waves about the perimeter of the mattress is effectively and efficiently resisted.
  • the upward force exerted on and tension imparted into the top wall 18 by the buoyant frame 40 of the means D is sufficient to normally maintain the top wall flat and free of slackness which would otherwise permit free vertical movement of the water surface and such that the top wall 18 is maintained set to counter and resist vertical moyement of water at the time vertical movement of the water is initiated.
  • the wall 18 is not pre-tensioned to such an extent that substantial free movement of the top wall under applied loads is adversely resisted.
  • the frame 40 is sufficiently soft, resilient and yieldingly formable so that it affords insufficient resistance to externally applied forces to adversely affect normal intended functioning of the mattress or resistance that-is likely to be perceived by the ordinary user of the mattress.
  • the frame 40 or the several rails thereof are established of a sufficiently open and porous reticulate material so that wave propagating energy transmitted through the water in the mattress and advancing toward the frame will continue-to travel into and through the water within the frame, but is such that it stops, slows and/or modifies the orbital movement of the particles of water, associated with waves and thereby causes the rapid dissipation or decay of wave energy.
  • the material of which the frame is established is such that when a standing wave is developing in the water in which the frame 40 is immersed or through which said frame extends, and the surface of the water is caused to move upwardly against the resistance afforded by the pre-tensioned top wall 18 of the bladder, the water moving into and through the frame to effect elevation of the surface of the water is caused to turbulate within the frame.
  • Such turbulence of water in the frame 40 slows and counters the water particle movement associated with waves and results in the rapia aecay of wave energy within and adjacent to the frame 40.
  • the pre-tensioning of the top wall 18 afforded by the frame 40 and the energy dissipating turbulence afforded by that frame combine with apparent synergistic effect to substantially dampen and notably reduce the reflection of wave energy and/or the establishment and maintenance of standing waves at and about the sides of the mattress bladder O.
  • the material used to establish the frame 40 is the same gar- netted polyester fiber matting that is used to establish the panel A.
  • the frame 40 is made to occur in the upper portion of the mattress bladder, that is, in the upper portion of the water column in which wave propagating energy and particle motion are the greatest and that it need not extend down from the top 18 of the mattress and through the water column below that point where water particle movement in the waves worked upon ceases to be such that interference with water particle movement will bring about notable wave damping effect.
  • the frame 40 be substantially coextensive with the vertical extent of its related side and end walls 16 and 17 of the mattress bladder O, as shown in Figs. 1 and 2 of the drawings, it can, as shown in the different and/or modified form of our invention illustrated in Fig. 4 of the drawings, be limited or restricted to extend vertically through the upper onehalf portion of the side and end walls, without materially affecting its ability to dampen wave reflection and cause notable rapid decay of wave energy about the perimeter of the mattress.
  • the lateral extent of the rails 41 and 42 of the frame 40 and the distance it extends laterally inwardly from the side and w end walls of the bladder, beneath the top wall 18 thereof, can vary substantially.
  • the lateral extent of the rails of the frame is prefereably equal or close to being the same as the wave length of waves of maximum amplitude that can be established and propagated in the mattress, which is best determined by empirical testing procedures which include the measurement of waves induced in undampened mattress bladders but which is fairly estimated to be close to or between one-half and two-thirds the normal depth of the mattress bladder.
  • the lateral extent of the rails of the frame 40 should be at least 11.43cm wide and are preferably 15.24 cm or more in width, if most effective and efficient functioning of the means D is to be assured.
  • the spacer means S' comprises the above described weighted hangers which are related to the pads 30 and serve to anchor the panel in desired vertical position in the bladder O'.
  • the frame 40' of the damper means D' in Fig. 3 of the drawings is formed in part by the outer side and end edge portions of the panel A' and by elongate upper and lower rail portions secured to and extending longitudinally of their related side and end portions of the panel. Buoyancy is imparted into the laminated structure described above by elongate, flat, ribbon-like strips or pads 48 of soft, resilient and buoyant foam plastic material arranged between the top surface of the lower rail portion and adjacent portions of the bottom surface of the panel.
  • the several adjacent and related parts and portions of the fabricated frame structure described above are fixed one to the other by means of a suitable cement as indicated at 49.
  • the spacer means S" for the panel A" is essentially the same as the means S in the first considered form of our invention, except that the spacer blocks 20" are cemented to the panel A", as indicated at 50.
  • buoyancy is imparted to the panel A" by flotation pads 30" similar to the pads 30 in the second form of the invention shown in Fig. 3 of the drawings, but the pads 30" are cemented to the panel as indicated at 51.
  • the frame structure 40" of the damper means D" in the form of the invention shown in Fig. 4 of the drawings is close to being the same as the frame structure 40' in the second embodiment of our invention.
  • the frame structure 40" does not include the lowermost laminate or rail portion and is therefore of reduced vertical extent and is such that it does not extend an appreciable distance below the bottom plane of the panel A".
  • a wave damper means or structure D 2 which includes an independent frame structure 40A of non-buoyant water-permeable reticulate material, such as gar-netted plastic fiber matting. Buoyancy is imparted into the several rails of the frame 40A by elongate, flexible, preferably soft and resilient cores 53 of lightweight buoyant cellular foam plastic, which cores are coextensive with their related rails and impart desired dimensional stability into the frame structure.
  • the wave damper structure D 2 can be arranged in its related mattress bladder 0 2 separate from and independent of a panel structure such as is provided in the other forms and embodiments of our invention and functions to impede the reflection of wave energy and dampen standing waves at the several sides of the bladder in the same manner that the means D and D' do.
  • FIGs. 6 through 9 of the drawings we have diagrammatically illustrated that water particle motion which is associated with waves in water bed mattresses; and the water particle trajectory which is normally found to occur in deep, transitional and standing waves.
  • Reference to Figs. 6 through 9 of the drawings is to be made for better understanding of our discussion of wave dynamics presented in the preamble of our disclosure and for a clear understanding of the function of and work performed by our new wave motion control structure.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Revetment (AREA)
EP82400160A 1981-02-17 1982-01-28 Matelas d'eau à amortisseur d'ondes Withdrawn EP0059123A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23466681A 1981-02-17 1981-02-17
US234666 1981-02-17

Publications (1)

Publication Number Publication Date
EP0059123A1 true EP0059123A1 (fr) 1982-09-01

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Application Number Title Priority Date Filing Date
EP82400160A Withdrawn EP0059123A1 (fr) 1981-02-17 1982-01-28 Matelas d'eau à amortisseur d'ondes

Country Status (5)

Country Link
EP (1) EP0059123A1 (fr)
JP (1) JPS57139307A (fr)
AU (1) AU7810281A (fr)
ES (1) ES508397A0 (fr)
ZA (1) ZA82310B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517691A (en) * 1981-05-01 1985-05-21 Phillips Raymond M Motion damping system for water bed mattresses
GB2149298A (en) * 1983-09-26 1985-06-12 Richard Fraige Waterbed float and waterbed mattress incorporating such float(s)
US4575886A (en) * 1982-01-18 1986-03-18 Larson Lynn D Fiberous wave-dampening apparatus
US4975995A (en) * 1989-09-11 1990-12-11 Advanced Sleep Products Water mattress with vertically disposed dampening cells
EP0446027A1 (fr) * 1990-03-06 1991-09-11 Strata Flotation, Inc. Lits à eau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0641486Y2 (ja) * 1988-02-01 1994-11-02 株式会社ドリーム総合研究所 ウォーターベッド

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1288319A (fr) * 1970-04-10 1972-09-06
US3736604A (en) * 1971-03-01 1973-06-05 Carson Manuf Co Fluid filled mattress
US4152796A (en) * 1978-03-28 1979-05-08 Classic Products Corporation Waterbed mattress
US4241465A (en) * 1979-01-03 1980-12-30 New World Manufacturing, Inc. Waveless waterbed mattress
US4247962A (en) * 1978-10-10 1981-02-03 Monterey Manufacturing, Inc. Waveless waterbed mattress

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1288319A (fr) * 1970-04-10 1972-09-06
US3736604A (en) * 1971-03-01 1973-06-05 Carson Manuf Co Fluid filled mattress
US4152796A (en) * 1978-03-28 1979-05-08 Classic Products Corporation Waterbed mattress
US4247962A (en) * 1978-10-10 1981-02-03 Monterey Manufacturing, Inc. Waveless waterbed mattress
US4241465A (en) * 1979-01-03 1980-12-30 New World Manufacturing, Inc. Waveless waterbed mattress

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517691A (en) * 1981-05-01 1985-05-21 Phillips Raymond M Motion damping system for water bed mattresses
US4575886A (en) * 1982-01-18 1986-03-18 Larson Lynn D Fiberous wave-dampening apparatus
GB2149298A (en) * 1983-09-26 1985-06-12 Richard Fraige Waterbed float and waterbed mattress incorporating such float(s)
US4975995A (en) * 1989-09-11 1990-12-11 Advanced Sleep Products Water mattress with vertically disposed dampening cells
EP0446027A1 (fr) * 1990-03-06 1991-09-11 Strata Flotation, Inc. Lits à eau
US5062170A (en) * 1990-03-06 1991-11-05 Strata Flotation, Inc. Waterbed mattress and corner structure with tethered insert

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Publication number Publication date
ZA82310B (en) 1982-11-24
ES8300454A1 (es) 1982-11-01
ES508397A0 (es) 1982-11-01
JPS57139307A (en) 1982-08-28
AU7810281A (en) 1982-08-26

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