Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
  • A43B13/18—Resilient soles
  • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
  • A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
  • A43B13/18—Resilient soles
  • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas

Definitions

• the invention relates to a footwear having two soles lying above each other, while two layers enclose a cavity containing a predetermined medium.
• a properly designed footwear does oo-t-Orriy treat carefully the foot itself, but exerts an advantageous i ⁇ - fluence onto the ankle, knees, load on joints, spinal column, the neck and the enclosing muscles.
• i ⁇ - proper footwear may cause even vascular diseases.
• the foot of people mainly the whole leg, is sub ⁇ jected considerably to dynamic load in course of running, mainly in course of any sporting activity.
• Magnitude of the load having been exerted onto the foot resp. leg depends mainly of the process of load transfer. If load is transferred onto the foot within a short time, in a shock-like manner, the effect may be harmful for the foot, leg and joints. Such a process of load transfer is taking place, when somebody is running on a hard soil, or wearing some footwear with a hard sole and running with an u ⁇ proportionally high speed. Medical practice leads back sudden occurence of vascular diseases to dynamic loads of the a orementioned character. To a certain extent a better situation may be achieved, if load is transferred gradually onto the feet and joints. Such a state occurs, if one is running on a softer surface, e.g. on a carpet, fine grass.
• Footwears have been known with which the sole is made of some elastic material, e.g. rubber or some synthet ⁇ ic material.
• a sole made of such an elastic material is reducing the extent of shock-like load of the foot, however, the drawback of said design lies in that it does not acc ⁇ mo- date properly to the shape of the sole surface.
• Footwears used to be averaged on basis of serially taken measurements it is impossible to consider further individual differenc ⁇ es within a range of sizes having been gained by averaging in course of production on plant level.
• Soles for footwears have been also known, with which a closed cavity is formed between two elastic ma ⁇ terials and a fluidum is contained in said cavity.
• the US-PS 4,472,890 describes a solution, with which the cavity formed in the shoe-sole receives a cushion filled partly with a liquid, the cushion is made of an elastic, non-porous material and has thin walls.
• the hose contains pressurized liquid.
• the British Patent GB-PS 1 525 476 specifies an insole, consisting of two parts made of some flexible material and inbetween there is some liquid, so e.g. water.
• the insole is divided into four parts separated from each other, the single fields do not communicate with each other. Pressure of water can be adjusted to the desired height. Problems are identical with the pre ⁇ viously described ones.
• German Patent Specification DE-OS 2 809 011 describes sporting shoes provided with an air cell with a check-valve.
• the entirety of the sole sur ⁇ face the solution with the air cell cannot be considered as a solution of full value, deficiency does not need any explanation.
• a further common disadvantageous feature of the known footwears of the specified character lies in that both in the loaded and unloaded state they hold the foot either too tightly or unmotivatedly loosely.
• loose enclosure mainly in course of sporting acti ⁇ vities
• the foot if not at all supported properly by the footwear and on the soil, while in a tight state the footwear strangles the arteries of the foot, even in an unloaded state.
• blood circulation in the veins is unhindered, if work is performed, blood may circulate freely in the veins always, if e.g. the foot gets in an unloaded state in course of walking or running.
• the aim of the invention is to develop a foot- wear, which enables that sole-surface of the foot should bear up against the sole-part of the footwear in an ideal way in course of load resp. use; the person wearing the shoe should always feel the stable support for the foot and the veins in the surrounding body parts might be compressed on the worst in the timely periods of loading.
• the invention relates to a foot ⁇ wear having a sole-part made of an elastic material, form- ed as a double layer - a lower and an upper layer -, while between the two layers there is a space forming a cavity having been filled with a material of the liquid phase; the solution can be characterized in that the double sole of the footwear forms one single undivided closed space stretching oneself in the full length of the sole.
• the guiding ribs and/or notches are curves recurring in itselves and/or labyrinth curves and/or any other deflecting means, wherein the mutual distance between the points of loading is the possibly less .
• the liquid space of the footwear-sole having been formed as a double layer is connected with the doper part of the shoe, also formed with a double layer, expediently with the leg of the shoe.
• the closed space-part having been formed in the leg of the shoe is formed as a pipe system of channel system, separated partly or completely, communicates with the liquid space of the footwear-sole formed as a double layer.
• the footwear according to the invention is formed so, that at least one of the double-layered sole of the footwear is interconnected partly or completely with an elastic synthetic material, eventually with closed cells, or with any similar material.
• a further em ⁇ bodiment of the footwear can be characterized in that the ribs formed on one of the soles of the footwear are reali- zed so as to fit into the notches.
• the embodiment is considered also as advantage ⁇ ous, with which the treading surface of the sole of the footwear is formed with some pattern, mainly on the points of loading, made of some wear-resiste ⁇ t material with holding ribs and adherent ribs being suitable to exert reactive forces against directions of force effects,.
• the embodiment is considered advanta ⁇ geous, with which the material of liquid phase used for this purpose is a fluidum of the density 0,5 to 2 g/cm , with a viscosity depending less on temperature, so e.g. silico ⁇ e oil or a mixture t ⁇ e_re_Qf, or any other molecu- larly fluent substance.
• a fluidum of the density 0,5 to 2 g/cm
• a viscosity depending less on temperature so e.g. silico ⁇ e oil or a mixture t ⁇ e_re_Qf, or any other molecu- larly fluent substance.
• figure 1 gives the shematical corss-sectio ⁇
• figure 2 the cross-section of another embodiment
• figure 3 shematical cross-section of a further preferred embodiment
• figure 4 is also a cross-section
• figures 5, 6 and 7 give examples of details being suitable to any of the embodiments of the invention.
• the sole 1 of the foot - wear consists of an upper layer 2 and a lower layer 3, made of any suitable felxible material, elastic synthetic material or rubber, or any other ati ⁇ ral with similar characteristics.
• the upper layer 2 and the lower layer 3 are fixed to each other - e.g. glued - in a way known in itself and so, that i ⁇ between a closed cavity 4 is formed.
• Interconnection of the upper layer 2 and the lower layer 3 can be safely solved by using some body with a clamping character and in such a manner that it forms a band 5 or any other 'Similar device surrounding the whole periphery of the sole 1 of the footwear.
• the sole 1 of the footwear can be fixed to the upper parts if any known way.
• the upper layer 2 confining a cavity 4 may be formed with a changing thickness longitudinally, optional ⁇ ly transversely too. On the lower parts of the toes and under the waist part the upper layer 2 is considerably thinner, than on the other parts. Expediently skiving of the upper layer 2 on the aforementioned places can be realized by forming notches 7, next to the notches 7 ribs 8 are to be found.
• notches 7 do not extend to the edge of the upper layer 2 as to achieve that the edges of the upper layer 2 and lower layer 3 in ⁇ tended to be interconnected should bear up against each other with a smooth surface.
• Cavity 4 contains a liquid with a viscosity being higher, than the viscosity of water, material depends less on changes in temperature and density equals to 0,5 to 2 g/cm , In such a manner e.g. silicone oil, the mixture thereof or any other substance being molecularly fluent can be used for this purpose.
• silicone oil the mixture thereof or any other substance being molecularly fluent can be used for this purpose.
• the surface of the upper layer 2 covered with the insole-lining 9 is planar, while said planar surface is parallel with the surface formed with patterns, forming the treading surface of the lower layers 3.
• the upper part 2 moves toward the lower layer 3 and under the toes, in the part between the toe pads and the striated musculature, as well as under the heels it bears up against the lower layer 3, while the part of the upper layer 2 is bulging out upwards, namely the part lying under the toe pads, striated musculature and the heels, respectively.
• the liquid havincbeen distributed equally originally in the cavity 4 will be collected under the thinner parts of the upper layer 2 and presses these thin layers upwards.
• the sole will be supported so as if we walked on a material of carpet - or sand character.
• the shape of the foot changed while walking or running, simultaneously the shape of the upper layer 2 will change too and it fits completely to the sole-surface of the foot.
• the sole 1 of the foot ⁇ wear is taking up its original position.
• Notches 7 may be straight or curved, or curves recurring in itselves, or labyrinth curves.
• the embodiment of the footwear to be seen here differs in so far as from the embodiment according to figure 1, that on the inner surface of the lower layer 3 notches 7 and ribs 8 are formed. Said ribs 8 are expediently formed in the full length of the footwear and they have to fulfil a double task.
• One of the tasks lies in to prevent sliding of the two layers on one another, when the upper layer 2 is lying onto the lower layer 3 in the loaded state, under the effect of the force component transferred by the foot from the upper layer 2, being parallel with the longitudinal direction or cross-direction of the shoe. If along, the periphery of the upper layer 2 and the lower layer 3 reinforcement, con ⁇ nection of the sole 1 of the footwear tore, cracked, slip may occur.
• the other task lies in that with equal thickness of the sole 1 of the footwear a larger mass of liquid could be arranged in the cavity 4, as the notches 7 between the ribs 8 are also storing the liquid.
• notches 7 and ribs 8 in the upper layer 2 are arranged only in the part under .the toes and the arch of the ankle.
• openings 15 are formed, through which pipes 11 extend into the upper part 6 of the footwear and communicate with the cavity 4.
• the pipes 11 are arranged equally along the sole 1 of the footwear and the upper part 6, i.e. along their periphery.
• Pipes 11 are formed with elastic walls which stretch upon the increase of inner pressure.
• pipes 11 may be interconnected by horizontally arranged connecting pipes 12, accordingly, the cavity 4, the ascending pipes 11 and interconnecting pipes 12 form a continuous space which is completely filled with the liquid.
• volume of the cavity 4 will be reduced, a part of the liquid flows from the cavity 4 into the pipes 11 and the interconnect ⁇ ing pipes 12, these are stretched, as a consequence, the upper part 6 will fit closer to the foot and ankle- than before, the foot is supported in a safe way.
• the cavity takes up repeatedly its original shape, the part of the liquid having been pressed into the pipes 11 and interconnecting pipes 12 flows back into the cavity 4, the upper part 6 encloses the foot and the ankle in a more loose way, as a con ⁇ sequence, blood can flow freely in the veins.
• Figures 5, 6 and 7 illustrate the sectional veew of the sole-elements of the footwear.
• holding rib 13 and adhering rib 14 are formed on the treading surface.
• the pattern changes in dependence of loading.
• the sole 1 of the footwear fits completely to the whole surface of the sole in any phase of use, it supports the foot equally, independently of the shape of the sale of the foot.
• An additional advantage lies in that the foot ⁇ wear encloses tightly the foot, ankle and leg, if these are subjected to load; in the unloaded state enclosing is loose, free flow of blood is prevented for a short time only. During the periods without intermediate load no loading occurs.
• the person using the foot ⁇ wear has always the feeling that his foot is safely and steadily supported.
• the liquid filling does not tend to diffuse from the closed space or leave the cavity e.g. through the pores.

Landscapes

• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=10963390

Family Applications (1)

Country Status (11)

Cited By (4)

Citations (7)

• 1988
  • 1988-06-28 HU HU883264A patent/HUH3587A/hu unknown
• 1989
  • 1989-06-28 JP JP1507051A patent/JPH03500138A/ja active Pending
  • 1989-06-28 WO PCT/HU1989/000032 patent/WO1990000021A1/en not_active Application Discontinuation
  • 1989-06-28 KR KR1019900700459A patent/KR900701189A/ko not_active Application Discontinuation
  • 1989-06-28 AU AU38463/89A patent/AU3846389A/en not_active Abandoned
  • 1989-06-28 EP EP89907251A patent/EP0378637A1/en not_active Withdrawn
  • 1989-06-28 MC MC892086D patent/MC2086A1/xx unknown
  • 1989-06-28 ZA ZA894919A patent/ZA894919B/xx unknown
• 1990
  • 1990-02-28 DK DK052190A patent/DK52190A/da not_active Application Discontinuation
  • 1990-02-28 FI FI901025A patent/FI901025A0/fi not_active Application Discontinuation
  • 1990-02-28 NO NO90900961A patent/NO900961L/no unknown

Patent Citations (7)

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