US20200375370A1 - Floatation-type mattress filled with fluidized balls - Google Patents

Floatation-type mattress filled with fluidized balls Download PDF

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Publication number
US20200375370A1
US20200375370A1 US16/496,636 US201816496636A US2020375370A1 US 20200375370 A1 US20200375370 A1 US 20200375370A1 US 201816496636 A US201816496636 A US 201816496636A US 2020375370 A1 US2020375370 A1 US 2020375370A1
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Prior art keywords
mattress
floatable
spheres
mattress according
webbing
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US16/496,636
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English (en)
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Yung Jae CHOI
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    • 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 or cushions
    • A47C27/086—Fluid mattresses or cushions with fluid-like particles, e.g. filled with beads
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/04—Devices for ventilating, cooling or heating
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/04—Devices for ventilating, cooling or heating
    • A47C21/042—Devices for ventilating, cooling or heating for ventilating or cooling
    • A47C21/044—Devices for ventilating, cooling or heating for ventilating or cooling with active means, e.g. by using air blowers or liquid pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/04—Devices for ventilating, cooling or heating
    • A47C21/048—Devices for ventilating, cooling or heating for heating
    • 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 or cushions
    • A47C27/087—Fluid mattresses or cushions with means for connecting opposite sides, e.g. internal ties or strips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05738—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with fluid-like particles, e.g. sand, mud, seeds, gel, beads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2210/00—Devices for specific treatment or diagnosis
    • A61G2210/70—Devices for specific treatment or diagnosis for cooling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2210/00—Devices for specific treatment or diagnosis
    • A61G2210/90—Devices for specific treatment or diagnosis for heating

Definitions

  • the present invention relates to a floatable mattress filled with fluidizable spheres 50 , and more particularly to a “floatable mattress filled with fluidizable spheres 50 ” (hereinafter referred to as a “‘floatable mattress”) configured such that spheres 50 , which fill the interior of the mattress, serve as a fluid, and the spheres move along the curved shape of the human body that lies on the mattress due to the weight of the human body in the state of being in contact therewith according to Pascal's law, whereby it is possible to improve comfort based on a floating effect in which the weight of the human body is evenly distributed over the surface of the human body that contact the mattress.
  • a floatable mattress configured such that spheres 50 , which fill the interior of the mattress, serve as a fluid, and the spheres move along the curved shape of the human body that lies on the mattress due to the weight of the human body in the state of being in contact therewith according to Pascal's law, whereby it is possible to improve comfort based on
  • Patent Document 1 Korean Patent No. 10-1525989 (CHOI, Yung Jae) May 29, 2015:
  • a tube fully filled with beads is fixed using strings along the edge of the mattress in order to support the edge of the mattress, the interior of the mattress is partitioned into several sections in order to restrain a phenomenon in which the mattress undulates and the beads crowd, a cushion is added to the bottom of the mattress in order to alleviate a phenomenon in which the protruding portions of the human body strike the bottom of the mattress due to the weight of the human body, whereby the structure of the mattress is complicated, and functional effects based thereon are in partial equilibrium by section.
  • the quantity of sections that are filled with spheres must be minimized such that the width of each section is increased in order to improve floatability.
  • the hips may strike the bottom of the mattress unless the height of the mattress is considerably increased. Consequently, the quantity of spheres 50 is increased in proportion to an increase in the height of the mattress, and the mattress is not fixed in form in proportion to an increase in the width of each section, whereby the mattress is inconvenient to use.
  • Patent Document 2 U.S. Pat. No. 4,425,676 (Crane) Jan. 17, 1984: A mattress configured such that several sections defined in a mattress are loosely filled with small plastic spheres or beads having a size of 0.5 to 3 mm, the upper plate of the mattress is ventilated, the lower plate of the mattress is made of a hermetically sealed fabric, whereby air in the mattress is forcibly ventilated using a blower in order to prevent or alleviate a bedsore while providing a cushion.
  • Patent Document 3 US Patent Application Publication No. 2015/0047126 A1 (Klink et al.) Feb. 19, 2015: A container, into which air is injected from below and which has an upper plate, on which the human body lies and through which air flows, is filled with beads having a size of 50 to 150 ⁇ m, wherein the beads are floated by air pressure of a blower, thereby achieving a fluidic floating effect.
  • Patent Document 4 U.S. Pat. No. 6,934,990 (Rapisarda) Aug. 30, 2005: non-fluidic pellets having a specific gravity of 0.15 to 1 are introduced into a box constituting a bed, and a flexible cover is put on the box such that the human body is floated when the human body lies on the box.
  • Patent Document 1 the interior of the mattress is partitioned into several sections, each of which is filled with spheres, and the tube, which is fully filled with the spheres, is attached using strings along the edge of the mattress in order to secure supportability of the edge of the mattress, whereby it is possible to sufficiently achieve a fundamental floating effect.
  • each section is merely several and thus each section has a large area, however, the protruding portions of the human body that lies on the mattress may easily push the fillers and may strike the bottom of the mattress. In order to solve this problem, the height of the mattress is increased. As a result, a large quantity of spheres, such as about 1.5 million spheres, is required, whereby a cost-related problem occurs.
  • weight distribution varies by section.
  • the structure of the mattress is complicated, whereby it is difficult to manufacture the mattress, and convenience in washing the mattress is deteriorated.
  • the upper plate and partitions of the mattress are made of a well-ventilated fabric, the mattress is partitioned into several sections, each of which is filled with beads, and compressed air is injected into the mattress in order to improve ventilation.
  • Patent Document 3 relates to a floatable mattress manufactured for people having bedsores or people who have to lie in bed for a long period of time, wherein a single container, which is filled with small pellets having a size of 50 to 150 ⁇ m, is surrounded by a hermetically sealed wall, the lower plate of the container is made of a screen, through which compressed air is injected into the container, and the upper plate of the container is made of a coated fabric such that the pellets are floated by the compressed air.
  • the coated fabric, of which the upper plate is made is not ventilated and does not emit sweat when the skin of the human body comes into contact therewith.
  • the box is filled with pellets having a specific gravity of 0.15 to 1 and a size of 8 to 12 ⁇ m, and is covered with a spandex fabric without partitioning the box into sections and without floating beads using the blower.
  • the box is hardly fixed in form, and therefore it is difficult to control the human body when in actual use.
  • it is not easy to go up to the bed and to come down from the bed.
  • the specific gravity of the filling beads must be high. In the case in which specific gravity of small beads approximates to 1, however, the fluidity of the small beads is reduced.
  • Patent Documents 3 and 4 the mattress, which is filled with beads, is integrally formed with a bed, and the weight of a single size bed is large, whereby it is difficult to easily purchase and use the bed.
  • any known mattress cannot be washed using a washing machine for home use.
  • the fabric of the mattress and the fillers in the container 70 are contaminated by pus, sweat, and keratin of a patient having a bedsore or a user who has to lie in bed for a long period of time, the entirety of the mattress must be newly reconfigured.
  • a mattress that is not integrally formed with a bed and that is filled with spheres has low solidity. Also, in the case in which a cover is put on the mattress in a conventional manner, the cover is easily separated from the mattress.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a floating effect based on general dynamic equilibrium and ventilation, which is seriously required for a mattress, without using water according to fluid dynamics of spheres.
  • the depth of the container 70 is increased, whereby the container must be filled with a large quantity of spheres, such as about 1.5 million spheres. It is another object of the present invention to provide a floatable mattress configured such that plural columns 40 , which are configured to be pressed, are arranged in the mattress, whereby it is possible to reduce the depth of the container without deterioration of floatability and thus to reduce the required quantity of spheres.
  • the present invention provides a floatable mattress configured to have a structure in which the “interior of the mattress” (hereinafter referred to as a “container”), formed by coupling a lower plate, which is made of a mesh, and an upper plate, which is made of a spandex mesh, to a tunnel along the edge of the mattress, is filled with fluidizable hollow spheres 50 , wherein the specifications of each of the fluidizable hollow spheres are set as follows: the diameter ⁇ of the fluidizable hollow sphere is 6 to 8 mm, the thickness t of the skin of the fluidizable hollow sphere is 0.3 to 0.5 mm, and the density ⁇ of the fluidizable hollow sphere is 0.3 g/cm 3 or less, and wherein each of the fluidizable hollow spheres is made of a synthetic resin, which has strength at which the fluidizable hollow sphere is not deformed by a lowest force of 12 N and has a low coefficient of
  • Another hollow sphere may have a diameter ( ⁇ ) of 10 to 12 mm and a density ( ⁇ ) of 0.2 g/cm 3 or less, and may be made of a synthetic resin, whereby the hollow sphere may be lighter.
  • the hollow spheres 50 have not yet been commercially mass-produced, but are ready to be produced by the applicant of the present application.
  • the present invention provides a floatable mattress configured to have a structure in which the “interior of the mattress” (hereinafter referred to as a “container”), formed by coupling a lower plate, which is made of a mesh, and an upper plate, which is made of a spandex mesh, to a tunnel along the edge of the mattress, is filled with fluidizable hollow spheres 50 , wherein the specifications of each of the fluidizable hollow spheres are set as follows: the diameter ⁇ of the fluidizable hollow sphere is 6 to 8 mm, the thickness t of the skin of the fluidizable hollow sphere is 0.3 to 0.5 mm, and the density ⁇ of the fluidizable hollow sphere is 0.3 g/cm 3 or less, and wherein each of the fluidizable hollow spheres is made of a synthetic resin, which has strength at which the fluidizable hollow sphere is not deformed by a lowest force of 12 N and has a low coefficient of
  • Another hollow sphere may have a diameter ( ⁇ ) of 10 to 12 mm and a density ( ⁇ ) of 0.2 g/cm 3 or less, and may be made of a synthetic resin, whereby the hollow sphere may be lighter.
  • the hollow spheres 50 have not yet been commercially mass-produced, but are ready to be produced by the applicants of the present application.
  • the present invention provides a floatable mattress configured to have a structure in which the “interior of the mattress” (hereinafter referred to as a “container”), formed by coupling a lower plate, which is made of a mesh, and an upper plate, which is made of a spandex mesh, to a tunnel along the edge of the mattress, is filled with fluidizable hollow spheres 50 , wherein the specifications of each of the fluidizable hollow spheres are set as follows: the diameter ⁇ of the fluidizable hollow sphere is 6 to 8 mm, the thickness t of the skin of the fluidizable hollow sphere is 0.3 to 0.5 mm, and the density ⁇ of the fluidizable hollow sphere is 0.3 g/cm 3 or less, and wherein each of the fluidizable hollow spheres is made of a synthetic resin, which has strength at which the fluidizable hollow sphere is not deformed by a lowest force of 12 N and has a low coefficient of
  • Another hollow sphere may have a diameter ( ⁇ ) of 10 to 12 mm and a density ( ⁇ ) of 0.2 g/cm 3 or less, and may be made of a synthetic resin, whereby the hollow sphere may be lighter.
  • the hollow spheres 50 have not yet been commercially mass-produced, but are ready to be produced by the applicant of the present application.
  • a smooth sphere 50 the surface of which is reinforced and which has a density ⁇ of 0.3 g/cm 3 or less, a little elasticity in which the sphere is not deformed by a force of 6 N, and a diameter ⁇ of 6 mm to 8 mm, may be formed.
  • a wood sphere 50 may be made of a wood having a density ⁇ of 0.3 g/cm 3 or less and a diameter ⁇ of 6 to 8 mm.
  • Another wood sphere 50 may have a diameter ⁇ of 10 to 12 mm.
  • the required quantity of wood spheres may be smaller than in the case in which the diameter of wood spheres is small, whereby it is possible to considerably reduce costs.
  • Small spheres may provide soft contact with the skin and high comfort; however, costs may be high.
  • a nylon stitching thread of 210d/6 at minimum may be used as a sewing thread for stitching fabric of the floatable mattress such that stitched portions do not rupture even at the pressure caused by acceleration based on the weight of the human body.
  • a mattress filled with fluidizable spheres has low solidity and is lightweight. For this reason, a cover is separated from the mattress in the case in which the cover is put on the mattress in a conventional manner. Consequently, the cover must be fixed to the mattress using strings.
  • strings of the cover are tied to a webbing loop 34 , which is formed by stitching webbing ribbons horizontally along the outer wall 32 of the tunnel at intervals.
  • Cited Patent Document 1 The features of the technical solution of the present invention that are different from Cited Patent Document 1 are as follows:
  • columns 40 which are configured to be pressed:
  • Cited Patent Document 1 the interior of a mattress is partitioned into several sections using partitioning walls in order to restrain a phenomenon in which the mattress undulates or the spheres are lumpy or depressed.
  • columns 40 which are configured to be pressed, may be arranged in the mattress (see FIG. 4 ).
  • the fluidizable spheres 50 may freely move in the entirety of the container 70 , which is filled with the spheres 50 , without interference of the partitioning walls while solving a problem of partial weight distribution based on the independent sections, as in Cited Patent Document 1, whereby it is possible to achieve a high floating effect caused by uniform weight distribution based on general dynamic equilibrium.
  • swelling of the spheres may be appropriately controlled, and therefore it is possible to reduce the height of the container 70 , whereby it is possible to considerably reduce the required quantity of spheres.
  • Cited Patent Document 1 a tube, which is fully filled with spheres, is attached using strings along the edge of a mattress in order to secure supportability of the edge of the mattress.
  • a tunnel 30 is formed along the edge of the mattress, and the tunnel may be fully filled with spheres, whereby it is possible to improve productivity and to improve integrated unity while maintaining supportability of the edge of the mattress.
  • a fan kit 60 Third, a fan kit 60 :
  • a fan kit 60 which includes several small fans 60 , which generate little noise and are controlled by a programmable controller 62 , the fans being operated such that the mattress is cool in summer, and heaters 61 coupled to the respective fans, the heaters being operated such that the mattress is warm in winter, may be separately provided such that the fan kit can be attached to the lower plate 10 of the mattress in a DIY manner.
  • the interior of the mattress is filled with spheres having a large diameter, and therefore an empty space is wide and open in all directions, whereby ventilation is well achieved through gaps defined between smooth surfaces of the spheres, and the floatable mattress is made of a mesh having holes formed therein or a 3D mesh.
  • a floatable mattress filled with fluidizable spheres is that, when pressure applied to a stationary fluid in a hermetically sealed space is changed at an arbitrary point, the pressure spreads over the entirety of the fluid without being reduced according to Pascal's law and that the fluidizable spheres 50 move in the state of being in tight contact with the curved shape of the human body due to the weight of the human body, and therefore the weight of the human body is evenly distributed over the curved surface of the human body, whereby the same vector force is applied perpendicularly to the mattress.
  • the weight of the sleeper concentrates on the greatly protruding portions, such as shoulders and arms, of the sleeper, whereby the sleeper may feel an oppressive sensation.
  • various diseases may be caused.
  • This equilibrium provides stability as if the human body were hugged tightly.
  • Cited Magazine Document 1 well describes an effect of treatment about stress of a floating effect.
  • dandruff and skin keratin are absorbed into the mattress together with sweat through a strong pumping action based on pressure and release of the human body due to toss and turn during sleeping.
  • the mattress provides a good habitat of various fungi, molds, and ticks.
  • fragments are generated from the sponge over time, whereby air in the room is greatly contaminated. This is particularly serious in dry winter.
  • the spheres, which fill the interior of the mattress, as well as the inside and outside skin of the mattress can be completely washed using a washing machine for home use.
  • the upper plate 2 of the mattress is made of a coarse spandex mesh
  • the inner and outer walls 32 and 33 and the lower plate 10 of the mattress are made of a mesh having large-sized holes formed therein or a 3D mesh.
  • half of the interior of the container 70 which is filled with the spheres 50 , is empty, and therefore the interior of the container is open in all directions, whereby good ventilation is achieved.
  • the mattress is filled with wood beads having low specific gravity or lightweight hollow spheres 50 , whereby it is possible to reduce the weight of the mattress.
  • FIG. 1 is an X-X′ sectional view showing a floatable mattress using spheres as a fluid according to the present invention.
  • FIG. 2 is a view showing that weight is evenly distributed regardless of the curved shape of the human body that contacts the mattress according to Pascal's law of the present invention.
  • FIG. 3 is a perspective view of the present invention with a corner being cut.
  • FIG. 4 is a view showing the arrangement of columns, which are configured to be pressed, of the present invention.
  • FIG. 5 is a plan view showing columns, which are configured to be pressed, formed using fishing lines of the present invention.
  • FIG. 6 is a plan view showing the construction of columns, which are configured to be pressed, formed using webbing strings of the present invention.
  • a container 70 which is formed by coupling a lower plate 10 and an upper plate 20 to a tunnel 30 surrounding the edge of a mattress 80 , is filled with spheres 50 .
  • the lower plate 10 is made of a stiff mesh having no elasticity or a 3D mesh
  • inner and outer walls 32 and 33 of the tunnel 30 are made of a 3D mesh
  • the upper plate 20 which contacts the human body, is made of a spandex mesh.
  • nylon fishing lines 41 having a size of No. 6 or higher, which become the columns 40 , which are configured to be pressed, are connected to wide webbing tapes 43 at regular intervals such that the webbing tapes are arranged in parallel to each other, and the webbing tapes are stitched to the lower plate 10 and the upper plate 20 of the mattress.
  • webbing strings 42 which become the columns 40 , which are configured to be pressed, are connected to wide webbing tapes 43 at regular intervals such that the webbing tapes are arranged in parallel to each other, and the webbing tapes are stitched to the lower plate 10 and the upper plate 20 of the mattress.
  • equilibrium plates 22 made of cotton may be widely added in width.
  • the interior of the container of the mattress is partitioned into hermetically sealed independent sections, whereby an injection port 31 must be formed in each section.
  • the interior of the container 70 which is filled with spheres, is open in all directions, whereby it is possible to inject the spheres into the container through a single injection port 31 formed in the lower plate, and the tunnel 30 may be filled with spheres by injecting the spheres through a single injection port 31 formed in the lower plate or through two injection ports formed in the lower plate so as to be disposed diagonally.
  • all injection ports are formed so as to have a pipe shape such that a bottleneck phenomenon does not occur when spheres are injected.
  • the spheres may be easily removed from the mattress such that the spheres can be washed using a washing machine for home use, and then the mattress may be filled with the washed spheres.
  • a nylon stitching thread of 210D/6 or higher must be used as a sewing thread for stitching the columns 40 , which are configured to be pressed, to the lower plate 10 and the upper plate 20 of the floatable mattress, and the same is equally applied to all sewing threads used for the floatable mattress. However, adding is an exception.
  • the pressure applied to the mattress is the sum of the weight of the human body and acceleration. If this condition is neglected, the sewing thread may be cut, and a large quantity of spheres may be discharged out of the mattress.
  • the inside skin container which is filled with the spheres, may be separated from the outside skin of the mattress, and may be introduced into a washing machine such that the spheres can be washed together with the inside skin container.
  • heaters 61 which are attached to the respective fans, may be operated such that the mattress is warm in winter.
  • These components may be mounted in a DIY manner. These components may also serve to remove moisture.
  • the fluidizable spheres which fill the interior of the container 70 of the mattress, are vitally important to the floatable mattress.
  • the size and specific gravity of the spheres have an absolute influence to the fluidity of the spheres. Consequently, the present invention proposes optimal specifications in consideration of the weight of the mattress while calculating costs through computation and a lot of experiments.
  • the specifications of a fluidizable hollow sphere 50 are set as follows: the diameter ⁇ of the fluidizable hollow sphere is 6 to 8 mm, the thickness t of the skin of the fluidizable hollow sphere is 0.2 to 0.5 mm, and the density ⁇ of the fluidizable hollow sphere is 0.3 g/cm 3 or less.
  • the fluidizable hollow sphere is made of a synthetic resin, which has strength at which the fluidizable hollow sphere is not deformed by a lowest force of 12 N and has a low coefficient of surface friction such that the fluidizable hollow sphere well slides so as to serve as a smooth fluid.
  • Another fluidizable hollow sphere has a diameter ⁇ of 10 to 12 mm and a density ⁇ of 0.2 g/cm 3 or less, and is made of a synthetic resin, whereby this fluidizable hollow sphere is lighter than the former.
  • a smooth sphere 50 the surface of which is reinforced and which has a density ⁇ of 0.3 g/cm 3 or less, a little elasticity in which the sphere is not deformed by a force of 6 N, and a diameter ⁇ of 6 mm to 8 mm, is formed.
  • a wood sphere 50 is made of a wood having a density ⁇ of 0.3 g/cm 3 or less and a diameter ⁇ of 6 to 8 mm.
  • Another wood sphere 50 has a diameter ⁇ of 10 to 12 mm.
  • the required quantity of wood spheres is smaller than in the case in which the diameter of wood spheres is small, whereby it is possible to considerably reduce costs.
  • Small spheres provide soft contact with the skin and high comfort; however, costs are high.
  • the size and density of the spheres have an influence on the fluidity of the spheres.
  • the fluidity of the spheres is considerably reduced.
  • the spheres are excessively lightweight, the spheres are pushed by the pressure of the human body due to high fluidity thereof, whereby the protruding portions of the human body may strike the bottom of the mattress.
  • the present invention proposes the structure of optimal spheres and a floatable mattress considering the above characteristics.
  • the floatable mattress is not fixed in form. For this reason, a cover is separated from the mattress in the case in which the cover is put on the mattress as in a conventional mattress. In order to fix the cover, therefore, strings of the cover are tied to a loop 34 , which is formed by stitching webbing ribbons along the outer wall 32 of the tunnel 30 at intervals (see FIGS. 3 and 4 ).
  • the cover is made of cotton tricot
  • the cover coincides with a concept of the upper plate 20 of the floatable mattress being made of a spandex mesh.
  • an elastic band may be attached so as to be easily tied to the ribbon loop 34 .

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
US16/496,636 2017-03-23 2018-03-16 Floatation-type mattress filled with fluidized balls Abandoned US20200375370A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020170036782A KR20180107896A (ko) 2017-03-23 2017-03-23 유동화(流動化)되는 구(球)로 충전되는 부양성 매트리스
KR10-2017-0036782 2017-03-23
PCT/KR2018/003072 WO2018174472A1 (ko) 2017-03-23 2018-03-16 유동화 (流動化)되는 구 (球)로 충전되는 부양성 매트리스

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JP (1) JP2020509901A (ko)
KR (1) KR20180107896A (ko)
WO (1) WO2018174472A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11432660B1 (en) * 2022-02-03 2022-09-06 Sean Lacy Resilient and buoyant beanbag chair

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10313979A (ja) * 1997-05-15 1998-12-02 Daisoo:Kk マット
JPH11113684A (ja) * 1997-10-15 1999-04-27 Masuda Kk 寝 具
ITBO20110276A1 (it) * 2011-05-17 2012-11-18 Resta Srl Materasso perfezionato e macchina per la sua produzione.
SI3005907T1 (sl) * 2013-06-06 2017-12-29 Shaohua Zhang Ležišče za enakomerno zbiranje in porazdeljevanje teže človeškega telesa
KR101525989B1 (ko) * 2014-02-28 2015-06-10 최융재 구슬 매트리스
JP2016005496A (ja) * 2014-06-20 2016-01-14 船井電機株式会社 面状熱調整器具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11432660B1 (en) * 2022-02-03 2022-09-06 Sean Lacy Resilient and buoyant beanbag chair

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WO2018174472A1 (ko) 2018-09-27
KR20180107896A (ko) 2018-10-04
WO2018174472A9 (ko) 2021-09-16

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