Boots – shoes – and leggings – Insoles – Laminated
Patent
1994-07-06
1995-08-08
Meyers, Steven N.
Boots, shoes, and leggings
Insoles
Laminated
36 43, 36165, A43B 1338
Patent
active
054387680
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention concerns an insole of elastic material with recesses for taking up exchangeable elastic inserts. A treatment of the foot can be obtained by exchangeable inserts and being able to exercise a greater or lesser pressure at the places of the inserts in comparison to the pressure derived from the material of the inserted sole.
2. Description of the Prior Art
Such an inserted sole is known from DE Patent 845,557, in which the recesses consist of stampings that have penetrated through the material.
Another form of such an inserted sole is described in DE OS 3,713,786, wherein the recesses do not penetrate in the side turned toward the sole of the foot in the inserted sole, but rather true cavities are provided, in which inserts are fitted.
A problem arises in such inserted soles with respect to holding the inserts. Nothing is disclosed in DE Patent 845,557 in this respect. In DE OS 3,713,786, a measure is described for this purpose, which is to provide the sides of the insert adjacent the bottom of the recess with an adhesive. A tight fastening of the inserts is accomplished in this way for the inserts used for the first time, but the adhesive rapidly loses its adhesive force, if the insert is changed several times, which is always the case when there is the necessity within the scope of treatment to use inserts of varying elasticity.
SUMMARY OF THE INVENTION
The invention provides a simple and secure means for holding the inserts, which makes possible a practical exchange of the inserts that can occur as frequently as desired.
According to the invention at least over the region of the inserts, the inserted sole is provided on the side of the recesses with a first layer of a flat adhesive seal as a bearing part, leaving open the recesses, and over this bearing part. Another or second layer of the flat adhesive seal, including the inserts, extends as a covering part.
The furnishing of the inserted sole with a bearing part of a flat adhesive seal, leaving the recesses open, which can be accomplished, e.g., by a permanent adhesive seal which makes it possible, after introducing the inserts, to provide these inserts and the regions of the inserted sole free of inserts with the covering part of the adhesive seal, which holds these inserts securely in their recesses on the basis of its covering of these inserts. Thus, the property of the adhesive seal is utilized, and the covering part can be pulled off the bearing part, without these parts losing their capability of again joining and adhering to each other. By means of flat adhesive seals configured in this way, it is therefore possible without anything further to secure the inserts in their recesses and to change them in a practical manner as often as desired.
Appropriately the padded part or pile is used as the bearing part, and the burred part or hooks of the flat adhesive seal is used as the covering part. In this case, the inserted sole offers a soft support by means of the padded part with respect to the inner sole of a shoe, if by mistake the covering part is not applied.
If the covering part is extended only over the region of the inserts, there results a corresponding savings in material for the covering part and also for the bearing surface with the same extension. For reasons of manufacture, the bearing part may also extend essentially over the entire inserted sole. In this case, the covering part may also be formed in the appropriate dimensions, i.e., the covering part also extends over the entire bearing part.
In order to provide the inserted sole itself with a good adhesive bond to the inner sole of the shoe, adhesive parts can be provided next to the region of the inserts, which are joined with the inserted sole on the side of the bearing part, to penetrate the holding or covering part, and are provided with a layer of self-adhering adhesive turned away from the inserted sole. An inserted sole configured in this way is held against slipping on the inner sole by means of the adhesive
REFERENCES:
patent: 1675711 (1928-07-01), Jones
patent: 1768491 (1930-06-01), Richardson et al.
patent: 2865097 (1958-12-01), Vollrath, Jr. et al.
patent: 3859740 (1975-01-01), Kemp
patent: 4694590 (1987-09-01), Greenwalt
patent: 4841648 (1989-06-01), Shaffer et al.
patent: 5014706 (1991-05-01), Phillip
patent: 5042175 (1991-08-01), Rowen et al.
patent: 5170572 (1992-12-01), Kantro
Bauerfeind GmbH & Co.
Meyers Steven N.
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