Boots – shoes – and leggings – Soles – Cushion
Patent
1999-04-02
2000-10-24
Fidei, David T.
Boots, shoes, and leggings
Soles
Cushion
36 3B, 36102, A43B 504
Patent
active
061348120
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a shoe sole, in the heel region and in the ball-of-the-foot region of which there are air-filled cavities in each case which are connected to one another via a line and valves which damp the impact when the foot is placed on the ground and, in the bending region, have a further cavity, which aids the forward movement.
It is known to provide shoes with elastic foam soles which damp the impact when the foot is placed on the ground. The deformation of the sole which takes place as a result of the foot being placed on the ground, however, requires additional force to be exerted during walking.
It is also known to provide, in the heel region and ball-of-the-foot region of the shoe sole, deformable, air-filled cavities which are connected to one another by lines, in order that, in addition to damping the impact when the foot is placed on the ground, there is also an improvement in the natural rolling movement of the foot. In this case, the air, possibly under elevated pressure, is forced, via the line, directly out of the region which is subjected to loading into the region which is not, this being intended to massage the muscles of the foot as a result. The compression energy is not utilized for forward movement (see German Patent 116 106 and DE-B 11 95 639).
German Patent 30 12 945 describes a shoe sole in which the energy used when the heel is placed on the ground is to be reused in the last phase of the step when the foot leaves the ground. For this purpose, it is provided that the compressed air which, when the heel is placed on the ground, is produced in the first cavity, which is located in this region of the sole, is collected in an intermediate store, from which it is to be directed, via a valve which is initiated by the bending of the shoe sole, into the second cavity, which is located in the ball-of-the-foot region of the sole, in order to inflate said second cavity at the point in time when the foot is lifted off the ground and thus to aid the lifting movement. Since in this position, however, the air in this cavity has already been compressed by the loading of the ball of the foot, on which the entire body weight rests at this point in time, air does not, in practice, flow out of the intermediate store, which is not at a higher pressure.
DE-A 33 13 767 discloses a further insole which is to effect impact damping and heat compensation during walking. In the case of this device, cavities in the ball-of-the-foot region and heel region are in each case connected to the outside air via valves and to one another via a line and a valve. When the sole region is subjected to loading, air flows, via said line and the valve, into the heel region, from where, when the heel region is subjected to loading, it is discharged to the outside air via the valve. While the heel region is subjected to loading and the sole region is relieved of loading, outside air is simultaneously taken in via the valve located in the sole region. The impact damping is regulated by corresponding dimensioning of the through-valves. The impact energy is not utilized here for forward movement either.
DE-B 39 42 777 discloses a further device in which a cavity in the heel region serves for impact damping, the compressed air being routed via lines into the sole region, where it flows out and displaces the humid air collected in the shoe interior. When the heel region is relieved of loading, fresh outside air is taken in from the outside via corresponding valves. It is also the case here that the energy used when the foot is placed on the ground is not utilized for forward movement.
The object of the present invention has thus been to find a device which makes it possible for the forces which are exerted when the foot is placed on the ground to be utilized for aiding the walking action.
This object is achieved by the features of the main claim and by those of the subclaims.
The device according to the invention achieves the situation where on the one hand, in a manner known per se, the impact when the foot, in
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Fidei David T.
Johann Neuner Metalltechnik-Apparatebau
Stashick Anthony
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