EP2729031B1 - Shoe insole - Google Patents
Shoe insole Download PDFInfo
- Publication number
- EP2729031B1 EP2729031B1 EP12807929.0A EP12807929A EP2729031B1 EP 2729031 B1 EP2729031 B1 EP 2729031B1 EP 12807929 A EP12807929 A EP 12807929A EP 2729031 B1 EP2729031 B1 EP 2729031B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bladder
- insole
- cushioning member
- forefoot
- flowable material
- 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.)
- Not-in-force
Links
- 239000000463 material Substances 0.000 claims description 65
- 210000004744 fore-foot Anatomy 0.000 claims description 52
- 239000004005 microsphere Substances 0.000 claims description 48
- 210000000452 mid-foot Anatomy 0.000 claims description 44
- 230000009969 flowable effect Effects 0.000 claims description 43
- 210000002683 foot Anatomy 0.000 claims description 35
- 210000000548 hind-foot Anatomy 0.000 claims description 33
- 239000011859 microparticle Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 2
- 229910000267 dualite Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000004800 polyvinyl chloride Substances 0.000 description 7
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- LXEKPEMOWBOYRF-UHFFFAOYSA-N [2-[(1-azaniumyl-1-imino-2-methylpropan-2-yl)diazenyl]-2-methylpropanimidoyl]azanium;dichloride Chemical compound Cl.Cl.NC(=N)C(C)(C)N=NC(C)(C)C(N)=N LXEKPEMOWBOYRF-UHFFFAOYSA-N 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 210000001872 metatarsal bone Anatomy 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LGXVIGDEPROXKC-UHFFFAOYSA-N 1,1-dichloroethene Chemical group ClC(Cl)=C LGXVIGDEPROXKC-UHFFFAOYSA-N 0.000 description 1
- KPWDGTGXUYRARH-UHFFFAOYSA-N 2,2,2-trichloroethanol Chemical compound OCC(Cl)(Cl)Cl KPWDGTGXUYRARH-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241001247482 Amsonia Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- RMOUBSOVHSONPZ-UHFFFAOYSA-N Isopropyl formate Chemical compound CC(C)OC=O RMOUBSOVHSONPZ-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 1
- 229940011051 isopropyl acetate Drugs 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 210000000113 medial cuneiform Anatomy 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000162 poly(ureaurethane) Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 150000003077 polyols Chemical group 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
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- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
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- 210000004233 talus Anatomy 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
- A43B17/03—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient filled with a gas, e.g. air
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
- A43B17/026—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient filled with a non-compressible fluid, e.g. gel, water
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/141—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form having an anatomical or curved form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/143—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the lateral arch, i.e. the cuboid bone
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/144—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the heel, i.e. the calcaneus bone
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/1445—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the midfoot, i.e. the second, third or fourth metatarsal
Description
- The present invention relates generally to shoe insoles or inserts, and more particularly to insoles having a bladder with a flowable material housed therein.
US2010/0275468A1 ,US2003/0061738A1 andUS2005/0241185A1 disclose shoe inserts including a bladder positioned within a main body. The bladder includes a fluid tight membrane defining an interior chamber containing a liquid. - According to the present invention there is provided an insole for insertion into footwear, said insole comprising the features of claim 1. Optionally, the insole includes a secondary forefoot cushioning member located adjacent the forefoot portion of the cushioning member. Optionally, the cushioning member and the secondary forefoot cushioning member are comprised of the same material.
- Optionally, the cushioning member comprises a foam member.
- Optionally, the forefoot portion of the cushioning member is thicker than the hindfoot portion of the cushioning member and the midfoot portion of the cushioning member.
- Optionally, the microparticles may, for example, comprise hollow microspheres.
- Optionally, the hollow microspheres are comprised of a vinylidene chloride, polypropylene, or acrylonitrile polymer or copolymer. Optionally, the hollow microspheres are comprised of glass, ceramic, or plastic. Optionally, the hollow microspheres have a crush strength of up to about 13,70 MPa (2000 psi), for example. Optionally, the hollow microspheres have a particle size of about 500 microns or less, e.g., about 100 to 350 microns.
- Optionally, the flowable material inside the bladder has a density of about 0.3 to 1.0 g/cm3. Optionally, the flowable material has a viscosity of about 3000 to 70,000 cp.
- Additional aspects of the invention, together with the advantages and novel features appurtenant thereto, will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned from the practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.
-
-
FIG. 1A is a skeletal outline, illustrating a dorsal view of the bones of the human foot. The general location of the forefoot, midfoot, and hindfoot is illustrated.FIG. 1B is a plan view of an imprint of a human foot, illustrating the general location of the medial and lateral portions of the human foot. -
FIG. 2 is a bottom plan view of an insole in accordance with a first exemplary embodiment of the present invention. -
FIG. 3 is a cross-section of the insole illustrated inFIG. 2 , taken through line 3'-3'. -
FIG. 4 is a cross-section of the insole illustrated inFIG. 2 , taken through line 4'-4'. -
FIG. 5 is an exploded view of an insole in accordance with a second exemplary embodiment of the present invention. The bladder containing the flowable material is shown separately from the cushioning member. Further, an opening in the bladder used to fill the bladder with flowable material is shown. This opening is sealed prior to insertion of the bladder in to the recess of the cushioning member. In addition, the excess material around the opening may be removed after sealing so that the bladder fits snuggly into the recess. -
FIG. 6 is a cross-section of the insole illustrated inFIG. 5 , taken through line 6'-6' after the bladder containing the flowable material is placed in a recess in the cushioning member. -
FIG. 7 is a cross-section of the insole illustrated inFIG. 5 , taken through line 7'-7' after the bladder containing the flowable material is placed in a recess in the cushioning member. - The insoles of the present invention are designed to be used with shoes worn by a human foot. Turning now to the drawings,
FIGs. 1A and 1B illustrate the structure of the human foot. Generally speaking, the foot comprises (i) a hindfoot region containing the talus 1 and os calcis 2 bones; (ii) a midfoot region containing thecuneiform 3,cuboid 4 and navicular 5 bones; and (iii) a forefoot region comprising themetatarsals 6, theproximal phalanges 7, and the middle 8 and distal 9 phalanges. - As shown in
FIG. 1B , the hindfoot region can be divided into two sub-regions: the medial hindfoot (or medial heel) region and the lateral hindfoot (or lateral heel) region. The midfoot region can be divided into two sub-regions: the medial midfoot region and the lateral midfoot region. The forefoot region can be divided into two sub-regions: the distal sub-region comprising the middle and distal phalanges, and the proximal forefoot region comprising the metatarsals and proximal phalanges. The foot also includes a longitudinal arch, having a medial and a lateral side. The medial longitudinal arch is generally defined by the navicular and medial cuneiform bones of the midfoot and the about the proximal half of the first, second, and third metatarsals. - In
FIGs. 2 to 4 , a first embodiment of theinsole 10 of the present invention is shown. Theexemplary insole 10 is designed to fit the shape of a human right foot. An insole designed to fit the shape of a human left foot may be constructed in a similar manner, and will typically be the mirror image of theexemplary insole 10 for the right foot. - In general, the
insole 10 comprises aforefoot portion 12, ahindfoot portion 16, and amidfoot portion 14 which connects theforefoot portion 12 and thehindfoot portion 16 together. Theinsole 10 comprises acushioning member 20, a secondary distalforefoot cushioning member 30, and abladder 40 housing aflowable material 50. The size and shape of thebladder 40 is designed to provide cushioning for the foot of the user so that the ball and heel of the foot does not hit an incompressible material during normal use. - The
cushioning member 20 comprises a forefoot portion 22, ahindfoot portion 26, and amidfoot portion 24 which connects the forefoot portion 22 and thehindfoot portion 26 together. Themidfoot portion 24 ofcushioning member 20 includes both amedial midfoot portion 24M and alateral midfoot portion 24L. Thecushioning member 20 is preferably generally planar and has a firstmajor face 20A (e.g., the upper face when the insole is in normal use) and a secondmajor face 20B (e.g., the lower face when the insole is in normal use). The thickness of thecushioning member 20 is preferably about 2 to 4 mm (e.g., about 2.0, 2.2., 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, or 4.0 mm or some range therebetween). Thecushioning member 20 may optionally curve upward at the peripheral edges, especially at the peripheral edges of the midfoot portion and hindfoot portion, of the insole in order to create a cradle for the side, heel, and arch of the foot. In addition, a backing (such as a leather, cloth, or other fabric or hardened skin as set forth in Marc,U.S. Patent No. 7,837,910 ) may optionally be placed around thecushioning member 20 or over secondmajor face 20A. - Any suitable cushioning material may be used to form the
cushioning member 20, including, but not limited to, any flexible material which can cushion and absorb the shock from heel strike on the insole. Suitable shock absorbing materials can include any suitable closed or open cell foam, including but not limited to, cross-linked polyethylene, poly(ethylene-vinyl acetate), polyvinyl chloride, synthetic and natural latex rubbers, neoprene, block polymer elastomer of the acrylonitrile-butadiene-styrene or styrenebutadiene-styrene type, thermoplastic elastomers, ethylenepropylene rubbers, silicone elastomers, polystyrene, polyurea or polyurethane; most preferably a polyurethane foam made from flexible polyol chain and an isocyanate such as a monomeric or prepolymerized diisocyanate based on 4,4'-diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI). Such foams can be blown with freon, water, methylene chloride or other gas producing agents, as well as by mechanically frothing to prepare the shock absorbing resilient layer. Such foams advantageously can be molded into the desired shape or geometry. - The secondary
forefoot cushioning member 30 comprises a forefoot portion, preferably a distal forefoot portion, adapted to be located by the forefoot of the user during normal use. The secondaryforefoot cushioning member 20 is preferably generally planar and has a firstmajor face 30A (e.g., the upper face when the insole is in normal use) and a secondmajor face 30B (e.g., the lower face when the sole is in normal use). The thickness of thecushioning member 30 is preferably about 3 to4 mm (e.g., about 3.0, 3.2, 3.4, 3.6, 3.8, 4.0 mm or some range therebetween). - The secondary
forefoot cushioning member 30 may be attached to the cushioningmember 20 using any conventional means, e.g., adhesive, heat sealing, welding, stitching, cementing, and the like. The materials used to form the cushioningmember 20 and the secondaryforefoot cushioning member 30 may be the same or different. - Exemplary methods for forming the cushioning
member 20 and the secondaryforefoot cushioning member 30 are set forth inMarc, U.S. Patent No. 7,837,910 titled "Method of Forming a Hardened Skin on a Surface of a Molded Article";Marc, U.S. Patent No. 7,232,299 titled "Flow Molding Apparatus with Multiple Layers of Molds and Electrodes";Marc, U.S. Patent Application No. 2006/0012083 titled "Method of Making a Molded Article From Two or More Different Formable Materials in a Single Heating Cycle"; Marc,U.S. Patent No. 4,268,238 titled "Flow Molding";Marc, U.S. Patent No. 4,441,876 titled "Flow Molding";Marc, U.S. Patent No. 4,524,037 titled "Method and Apparatus for Forming a Flexible Thermoplastic Resin Foam Article";Marc, U.S. Patent No. 4,851,167 titled "Molding Process and Apparatus"; andMarc, PCT Patent Application No. PCT/US2011/023119 titled "Composite Foam Product." The insole of the present invention also comprises abladder 40 having a firstmajor side 40A (e.g., the side facing upward when the insole is in normal use) and a secondmajor side 40B (e.g., the side facing downward when the insole is in normal use). Thebladder 40 houses aflowable material 50 as discussed more fully below. Thebladder 40 comprises aproximal forefoot portion 42, ahindfoot portion 46, and a lateral midfoot portion 44L which connects theproximal forefoot portion 42 and thehindfoot portion 46 together. Theproximal forefoot portion 42 is generally sized and shaped for receiving the impact generated from the ball of the user's foot during normal use. Thehindfoot portion 46 of thebladder 40 is generally shaped for receiving the impact generated from the heel of the user's foot during normal use. As shown inFIG. 2 , thebladder 40 is shaped so that it does not overlie or cover the medial midfoot portion and distal forefoot portion of the user's foot. Thebladder 40 extends between the heel and the ball of the foot, but does not extend substantially over the medial midfoot subregion of the foot. - The thickness of the bladder from the first major side to the second major side is preferably about 6 to 8 mm (e.g., about 6.0, 6.5, 7.0, 7.5, 8.0 mm or some range therebetween). The cross-sectional area of the lateral midfoot portion 44L of the bladder may vary and can be optimized depending on the viscosity and density of the flowable material and the desired cushioning effect to be provided by the bladder. In general the cross-sectional area of the lateral midfoot portion 44L ranges from about 0.5 to 2 cm2 (e.g., about 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0 cm2 or some range therebetween), with 1 to 1.5 cm2 being most preferred. The volume of the bladder is preferably about 30 and 110 cm3 depending on the shoe size (e.g., about 30, 40, 50, 60, 70, 80, 90, 100, 110 cm3 or some range therebetween).
- The
bladder 40 is comprised of a flexible material. As a result, the bladder is compressible when a force is applied thereto. The bladder also provides a barrier to prevent the passage flowable material contained therein. In selecting materials for thebladder 40, engineering properties of the material (e.g., tensile strength, stretch properties, fatigue characteristics, dynamic modulus, and loss tangent) may be considered. An example of suitable bladder materials are thermoplastic polyurethane ("TPU") and polyvinyl chloride ("PVC"). In addition to TPU and PVC, examples of polymer materials that may be suitable for thebladder 40 include urethane, polyester, polyester polyurethane, polyether polyurethane, rubber, and synthetic rubber. Thebladder 40 may also be formed from materials described inMitchell et al., U.S. Pat. Nos. 5,713,141 and5,952,065 ;Bonk et al., U.S. Pat. Nos. 6,082,025 and6,127,026 ;Rudy, U.S. Pat. Nos. 4,183,156 ,4,219,945 ,4,936,029 , and5,042,176 . - The
flowable material 50 housed within the bladder is a non-gaseous liquid, paste, gel, cream, putty, colloid, or slurry. The flowable material preferably has a low density so that it will not undesirably add excess weight to the insole and shoe. The density of the flowable material is preferably about 0.1 to 1.0 g/cm3 (e.g., about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 g/cm3 or some range therebetween) with densities of about 0.3 to 0.5 g/cm3, being most preferred. The viscosity of the flowable material is preferably about 500 to 70,000 cp (e.g., about 500, 1000, 1500, 2000, 2500, 3000, 5000, 10,000, 20,000, 30,000, 40,000, 50,000, 60,000, 70,000 cp or some range therebetween), with viscosities of 3000 to 10,000 cp (e.g., 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10,000 cp or some range therebetween) being most preferred. Preferably, it is desirable to use a flowable material of relatively high viscosity such as a mineral oil or a higher alcohol or ester. Of course, any flowable material may be employed which satisfies the requirements of viscosity and compatibility with materials of construction. For example, if the insole is constructed of PVC, one would not employ flowable material which is a solvent for PVC or which would leach out the PVC. - Exemplary flowable materials include various nongaseous media, including but not limited to water; alcohols such as ethanol, isopropanol, n-hexanol, cyclohexanol, trichloroethanol, lauryl alcohol, n-octanol, and n-decanol; esters such as ethyl acetate, isopropyl formate, methyl and ethyl propionate, and isopropyl acetate; halogenated compounds such as dichloroethylene, chloroform, and carbon tetrachloride; and oils such as mineral oil and silicon oil.
- In the invention, the flowable material comprises a plurality of microparticles. The microparticles are preferably dispersed in a carrier. The microparticles typically comprise about 20 to 80% by volume (e.g., about 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80%, by volume or some range therebetween) of the flowable material.
- The microparticles used in within the bladder may be rigid or compressible microspheres, or mixtures thereof. Suitable microspheres for use in the bladder according to the invention can be hollow microspheres (also known as microballoons or microbubbles) or solid microspheres. Hollow microspheres are generally preferred. The hollow microspheres increase the viscosity of the flowable material in the bladder and have relatively low densities. Thus, the use of hollow microspheres does not undesirably add too much weight to the insole and shoe. The preferred densities of the hollow microspheres about 0.01 to 0.5 g/cm3 (e.g., about 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.12, 0.14, 0.16, 0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.3, 0.32, 0.34, 0.36, 0.38, 0.4, 0.42, 0.44, 0.46, 0.48, 0.5 g/cm3 or some range therebetween) with densities of about 0.03 to 0.15 g/cm3, being most preferred.
- The microspheres may be made of inorganic materials, such as glass, ceramic, and carbon, or organic polymers, such as phenolic resins and plastics. The microspheres may be surface treated, coated, or colored, as desired. Solid microspheres can be prepared by any of several methods known in the art. For example, solid microspheres can be prepared by softening irregularly shaped particles just enough for them to flow into spheres under the influence of surface tension, by quenching a melt in a cooler medium, or by carrying out polymerizations in well-stirred suspensions at elevated temperature. Hollow inorganic microspheres can be prepared by several known methods. For example, hollow glass spheres can be prepared by grinding and sizing soda-lime glass cullet to form particles that, in combination with blowing agents, are passed through a gas flame to soften the glass and generates gases that expand the particles. See
Beck et al., U.S. Patent No. 3,365,315 . Hollow glass spheres can also be prepared by spray-drying a sodium borosilicate solution containing a blowing agent to form a particulate material that is passed through a gas flame to form the spheres. SeeVeatch et al., U.S. Patent No. 2,978,339 . Ceramic microspheres can be obtained as both solid and hollow microspheres as a normal aluminosilicate by-product of burning coal. See also, J. F. Plummer, "Microspheres" in Encyclopedia of Polymer Science and Technology, Vol. 9, 788 (John Wiley & Sons, Inc.) (1987). Microspheres are also generally described inCravens, U.S. Patent No. 4,038,238 ;Melber et al., U.S. Patent No. 4,829,094 ;Melber et al., U.S. Patent No. 4,843,104 ;Melber, U.S. Patent No. 4,902,722 ;Janda, U.S. Patent No. 4,959,395 ; and Japanese Patent Publication60-244511 - The microparticles (and the microspheres) housed in the bladder of the present invention preferably have particle sizes of 500 microns or less (e.g., about 500, 450, 400, 350, 300, 250, 200, 150, 100, 90, 80, 70, 60, 50, 40, 30, 20, 15, 10, 6, 5, 4, 3, 2, or 1 microns or less). In addition, the hollow microspheres used may have different particle sizes, for example from about 15 microns to about 350 microns. Microspheres can be purchased with a variety of wall thicknesses, with a thickness of about 1 to 3 microns (e.g., about 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0 microns or some range therebeween) being most preferred. The microspheres can also be characterized by their crush strength, with preferred crush strengths ranging from about 0.69 MPa to 13,79 MPa (100 to 2000 psi) (e.g., about 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1500, 2000 psi or some range therebetween).
- The most preferred commercially available microspheres are the Dualite E065-135D microspheres (Henkel, Greenville, SC), which comprise an acrylonitrile copolymer shell with a calcium carbonate coating. These microspheres reportedly have a density of 0.065 g/cm3 and a particle size between 125 and 145 microns. Other preferred commercially available microspheres are Scotchlite K15 glass bubbles (3M). These microspheres reportedly have a density of about 0.15 g/cm3 and 2,07 MPa (300 psi) crush strength. Glass microspheres are also available from Larand Chemical (Boca Raton, FL).
- The carrier for the microspheres is preferably one of the liquid media described previously. The carrier preferably has a low density so that it will not undesirably add excess weight to the insole and shoe. The density of the carrier is preferably about 0.3 to 1.0 g/cm3 (e.g., about 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 g/cm3 or some range therebetween) with densities of about 0.3 to 0.5 g/cm3 being most preferred. The viscosity of the carrier is preferably about 0.5 to 70,000 cp (e.g., 0.5, 3, 5, 20, 30, 50, 100, 350, 500, 1000, 1500, 3000, 5000, 10,000, 20,000, 30,000, 40,000, 50,000, 60,000, 70,000 cp or some range therebetween), with viscosities of 0.5 to 10,000 cp (e.g., about 50, 100, 350, 500, 1000, 1500, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10,000 cp or some range therebetween) being most preferred. Preferably, it is desirable to use a carrier of relatively high viscosity such as a mineral oil or a higher alcohol or ester. Of course, any carrier may be employed which satisfies the requirements of viscosity and compatibility with materials of construction.
- Most preferably, the carrier is a silicone rubber fluid, such as the Rhodorsil oils, and especially the Rhodorsil V-50 (47V50) available from Bluestar Silicones (Cranbury, NJ). This product has a reported density of 0.96 g/cm3 and a viscosity of 50 cp.
- A preferred exemplary flowable material comprises 43% by volume of Rhodorsil V-50 (47V50) silicon oil and 57% by volume of Dualite E065-135 microspheres.
- The bladder housing the flowable material can be formed using any method known to those skilled in the art. Preferably, the bladder is formed by placing a vacuum-formed film comprising the bladder material in a mold which has a recess the shape of second major side of the bladder. Another film of similar size is placed on top of that film. The two films are then welded together using an alternating electric field generated, preferably in the radiofrequency range. A small unsealed
area 141 is maintained, and this unsealed area is used to inject the flowable material into the bladder. The bladder is preferably filled with the flowable material, typically by using an air cylinder filled with the flowable material. The injector (which is typically a flexible tubing as long as the bladder) on the air cylinder is preferably placed near the bottom of the bladder so that as the bladder fills up with the flowable material, all of the air is removed. Once the bladder is filled with the flowable material, the bladder's unsealed area may be sealed, typically using an alternating electric field or by heat sealing. Any residual or excess material from the now sealed injection opening may be removed (e.g., by cutting away) so that the bladder fits therecess 128. An alternating electric field, preferably in the radiofrequency range, may be used to bond together the cushioningmember 20 and the secondaryforefoot cushioning member 30 and thebladder 40. All three elements maybe bonded together in a single step, or in separate steps. Exemplary alternating electric field technologies are described generally in Marc, U.S. Published Patent Application No.2006/0012083 titled "Method of Making a Molded Article from Two or More Different Formable Materials in a Single Heating Cycle" andU.S. Patent No. 4,441,876 titled "Flow Molding." Use of the insole of the present invention will now generally be described. In general the insole sized and shaped to be inserted into a shoe. When walking, the heel of the person contacts the hindfoot portion of the insole with the heel of the foot, which causes the flowable material located in thehindfoot portion 46 of thebladder 40 to generally move through the lateral midfoot portion 44L towards theproximal forefoot portion 42. Preferably, there is little flowable material residing in thehindfoot portion 46, although the amount of material depends on the area of passage through the lateral midfoot portion, the viscosity of the flowable material, and the force of impact between the person's heel and the bladder. For larger cross-sectional areas in the passage through the lateral midfoot portion, the viscosity of the flowable material may be higher. - When the load leaves the heel and is transferred to the ball of the user's foot, this causes the flowable material to leave the
proximal forefoot portion 42 and travel through the lateral midfoot portion 44L towards thehindfoot portion 46. Preferably, there is little flowable material residing in theproximal forefoot portion 42, although the amount of material depends on the area of passage through the lateral midfoot portion, the viscosity of the flowable material, and the force of impact between the ball of the person's foot and the bladder. Generally speaking, the insole operates on the same principle as a shock absorber in a car. - In
FIGs. 5 to 7 , a second embodiment of theinsole 110 of the present invention is shown. Theinsole 110 is designed to fit the shape of a human right foot. An insole designed to fit the shape of a human left foot may be constructed in a similar manner, and will typically be the mirror image of theexemplary insole 110. - In general, the
insole 110 comprises aforefoot portion 112, ahindfoot portion 116, and amidfoot portion 114 which connects theforefoot portion 112 and thehindfoot portion 116 together. Theinsole 110 comprises a generallyplanar cushioning member 120 which is integrally formed with a thicker secondaryforefoot cushioning region 130. That is, theforefoot cushioning region 130 and the remainder of the cushioning member are formed of a unitary material. Abladder 140 housing aflowable material 150 is inserted into arecess 128 in the cushioningmember 120. The size and shape of thebladder 140 is designed to provide cushioning for the foot of the user so that the ball and heel of the foot does not hit an incompressible material during normal use. - The cushioning
member 120 comprises aforefoot portion 122, ahindfoot portion 126, and amidfoot portion 124 which connects theforefoot portion 122 and thehindfoot portion 126 together. Themidfoot portion 124 of cushioningmember 120 includes both amedial midfoot portion 124M and alateral midfoot portion 124L. The cushioningmember 20 has a firstmajor face 120A (e.g., the upper face when the insole is in normal use) and a secondmajor face 120B (e.g., the lower face when the insole is in normal use). The thickness of the cushioningmember 120 is preferably about 2 to 5 mm (e.g., about 2, 3, 4, 5 mm or some range therebetween). As shown inFIG. 6 , the cushioningmember 120 is generally planar, although theperipheral edges 129 generally curve upward. Theforefoot portion 122 is thicker than the rest of the cushioningmember 120 and functions as the secondary forefoot cushioning region. - The cushioning
member 120 includes arecess 128 for receiving thebladder 140. Therecess 128 is sized and shaped to fit the size and shape of thebladder 140. As shown inFIGs. 6 and 7 , the depth of therecess 128 is such that thebladder 140 generally extends beyond the secondmajor face 120B of the cushioningmember 120. - The
bladder 140 has a firstmajor side 140A (e.g., the side facing upward when the insole is in normal use) and a secondmajor side 140B (e.g., the side facing downward when the insole is in normal use). Thebladder 140 houses aflowable material 150 as discussed previously. Thebladder 140 comprises aproximal forefoot portion 142, ahindfoot portion 146, and alateral midfoot portion 144L which connects theproximal forefoot portion 142 and thehindfoot portion 146 together. Theproximal forefoot portion 142 is generally sized and shaped for receiving the impact generated from the ball of the user's foot during normal use. Thehindfoot portion 146 of thebladder 140 is generally shaped for receiving the impact generated from the heel of the user's foot during normal use. As shown inFIG. 5 , thebladder 140 is shaped so that it does not overlie or cover the medial midfoot portion and distal forefoot portion of the user's foot. Thebladder 140 extends between the heel and the ball of the foot, but does not extend over the medial midfoot subregion of the foot. - It will be appreciated that the size and shape of the
bladders 40/140 described herein may vary, provided the bladder does not extend substantially over the medial midfoot region of the foot. That is, the size and/or shape of theproximal forefoot region 42/142 of the bladder may vary. Likewise, the size and/or shape of thehindfoot region 46/146 of the bladder may vary. Still further, the size/shape of the lateral midfoot portion of 44L/144L of the bladder may vary, provided that the bladder does not extend substantially over the medial midfoot region of the foot. In various aspects, bladder does not extend over about 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% the medial midfoot region of the foot generally illustrated inFIG. 1B . In another aspect, the bladder does not extend substantially over the longitudinal arch of the user during normal use. In various aspects, bladder does not extend over about 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, or 95% of the longitudinal arch of the user. - From the foregoing it will be seen that this invention is one well adapted to attain all ends and objectives hereinabove set forth, together with the other advantages which are obvious and which are inherent to the invention. Since many possible embodiments may be made of the invention without departing from the scope thereof, it is to be understood that all matters herein set forth or shown in the accompanying drawings are to be interpreted as illustrative, and not in a limiting sense. While specific embodiments have been shown and discussed, various modifications may of course be made, and the invention is not limited to the specific forms or arrangement of parts and steps described herein, except insofar as such limitations are included in the following claims. Further, it will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations. This is contemplated by and is within the scope of the claims.
Claims (12)
- An insole (10, 110) for insertion into footwear, said insole comprising:a cushioning member (20, 120) having a forefoot portion (22, 122), a hindfoot portion (26, 126), and a midfoot portion (24, 124) which connects the forefoot portion and the hindfoot portion together, wherein said midfoot portion (24, 124) includes a medial midfoot portion (24M, 124M) and a lateral midfoot portion (24L, 124L);a bladder (40, 140) connected to said cushioning member (20, 120), said bladder housing a flowable material (50, 150) comprising microparticles in a carrier, said bladder having a proximal forefoot portion (42, 142), a hindfoot portion (46, 146), and a lateral midfoot portion (44L, 144L) which connects the proximal forefoot portion of said bladder and the hindfoot portion of said bladder together wherein said bladder (40, 140) does not substantially extend over said medial midfoot portion (24M, 124M) of said cushioning member (20, 120), wherein
said bladder (40, 140) is configured such that (i) said flowable material (50, 150) moves from said hindfoot portion (46, 146) of said bladder (40, 140) through said lateral midfoot portion (44L, 144L) toward said proximal forefoot portion of said bladder (40, 140) upon impact between a heel of a foot and said bladder (40, 140) and (ii) said flowable material (50, 150) moves from said proximal forefoot portion of said bladder (40, 140) through said lateral midfoot portion (44L, 144L) toward said hindfoot portion (46, 146) of said bladder (40, 140) upon impact between a ball of a foot and said bladder (40, 140)wherein said cushioning member (120) has a first major face (120A) that faces upward during use and a second major face (120B) that faces downward during use, wherein said cushioning member (120) has a recess (128) located in said second major face (120B) for receiving said bladder (140), and wherein said bladder is received within said recess (128) such that the bladder extends beyond the second major face (120B) of the cushioning member (120). - The insole (10, 110) of claim 1 further comprising a secondary forefoot cushioning member (30, 130) located adjacent said forefoot portion (22, 122) of said cushioning member (20, 120).
- The insole (10, 110) of claim 1 or 2 wherein said cushioning member (20, 120) and said secondary forefoot cushioning member (30, 130) are comprised of the same material.
- The insole (10, 110) of any preceding claim wherein said cushioning member (20, 120) comprises a foam member.
- The insole (10, 110) of any preceding claim wherein said forefoot portion (22, 122) of said cushioning member (20, 120) is thicker than said hindfoot portion (26, 126) of said cushioning member and said midfoot portion (24, 124) of said cushioning member.
- The insole (10, 110) of claim 1 wherein said microparticles comprise hollow microspheres.
- The insole (10, 110) of claim 6 wherein said hollow microspheres are comprised of a vinylidene chloride, polypropylene, or acrylonitrile polymer or copolymer.
- The insole (10, 110) of claim 6 wherein said hollow microspheres are comprised of glass, ceramic, or plastic.
- The insole (10, 110) of any of claims 6 to8 wherein said hollow microspheres have a crush strength of up to 13.79 MPa (2000 psi).
- The insole (10, 110) of any of claims 6 to9 wherein said hollow microspheres have a particle size of 500 microns or less.
- The insole (10, 110) of any preceding claim wherein said flowable material (50) has a density of 0.3 to 1.0 g/cm3.
- The insole (10, 110) of any preceding claim wherein said flowable material (50) has a viscosity of 3,000 to 70,000 cp.
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PCT/US2012/044773 WO2013006393A1 (en) | 2011-07-07 | 2012-06-29 | Shoe insole |
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RU221218U1 (en) * | 2023-07-27 | 2023-10-25 | Вячеслав Петрович Тимофеев | ORTHOPEDIC INSOLE |
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FR3067226B1 (en) * | 2017-06-13 | 2021-10-08 | Rossignol Lange | SKI SHOE ELEMENT |
IT201700090817A1 (en) * | 2017-08-04 | 2019-02-04 | Diego Pagliari | PERFECTED PLANTAR. |
TWI685309B (en) * | 2018-11-09 | 2020-02-21 | 義守大學 | Sole structure and method of manufacturing the same |
US11564450B2 (en) | 2019-01-11 | 2023-01-31 | Boot Bam, Inc. | Systems and methods for enhancing boot comfort and style |
EP4268662A3 (en) | 2019-07-25 | 2024-01-03 | NIKE Innovate C.V. | Cushioning member for article of footwear |
WO2021016166A1 (en) | 2019-07-25 | 2021-01-28 | Nike Innovate C.V. | Article of footwear |
CN114206150A (en) | 2019-07-25 | 2022-03-18 | 耐克创新有限合伙公司 | Article of footwear |
KR102385195B1 (en) * | 2020-08-04 | 2022-04-12 | 강준한 | Hybrid Insole with multi-shock absorbing pad and Method for fabricating thereof |
GB2602960B (en) * | 2020-11-27 | 2023-10-25 | Scholls Wellness Company Ltd | Insole |
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WO1993012685A1 (en) * | 1992-01-02 | 1993-07-08 | Kneissl Dachstein Sportartikel Aktiengesellschaft | Outer sole, in particular for hiking shoes or climbing boots |
US20030061738A1 (en) * | 1998-12-23 | 2003-04-03 | Grohninger Frank Friedrich | Insole |
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US5421874A (en) * | 1993-06-22 | 1995-06-06 | Genesis Composites, L.C. | Composite microsphere and lubricant mixture |
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-
2012
- 2012-06-29 EP EP12807929.0A patent/EP2729031B1/en not_active Not-in-force
- 2012-06-29 WO PCT/US2012/044773 patent/WO2013006393A1/en active Application Filing
- 2012-06-29 CN CN201280042972.6A patent/CN103763963B/en not_active Expired - Fee Related
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WO1993012685A1 (en) * | 1992-01-02 | 1993-07-08 | Kneissl Dachstein Sportartikel Aktiengesellschaft | Outer sole, in particular for hiking shoes or climbing boots |
US20030061738A1 (en) * | 1998-12-23 | 2003-04-03 | Grohninger Frank Friedrich | Insole |
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RU221218U1 (en) * | 2023-07-27 | 2023-10-25 | Вячеслав Петрович Тимофеев | ORTHOPEDIC INSOLE |
Also Published As
Publication number | Publication date |
---|---|
US20130008050A1 (en) | 2013-01-10 |
CN103763963A (en) | 2014-04-30 |
EP2729031A1 (en) | 2014-05-14 |
CN103763963B (en) | 2017-08-22 |
EP2729031A4 (en) | 2015-04-22 |
WO2013006393A1 (en) | 2013-01-10 |
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