DE1282517B - Footwear with padding, in particular ski boots - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN 4 $ 07 ¥ W PATENTAMT Int. CL:

A43b

EDITORIAL

German KL: 71 a-7/20

Number: 1282 517

File number: P 12 82 517.1-26 (A 44919)

Filing date: January 2, 1964

Open date: November 7, 1968

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The present invention relates to footwear with padding, in particular a ski boot with at least padding provided in the shaft.

Such ski boots have been known for a long time. For example there are ski boots with swiveling, outer Ankle wrapping, which holds the heel firmly to the boot sole and at the same time allows you to bend forward enables. If these ski boots are laced so tightly that they offer sufficient support, then become even on the ankles and also on the softer parts of the feet, but not easing, painful pressures exerted.

There are also boots with cushions arranged in the rear of the shaft parts, which are straight into the in the back of the ankles. Also these boots are not too comfortable because all the lace pressure is distributed over relatively small areas.

Ski boots are also known in which the padding is made with air or with antifreeze water-filled pillows are formed. These boots again have the disadvantage that the lace pressure is evenly distributed over the entire surface of the upholstery, including the softer and more sensitive parts of the foot, causing pain.

Further disadvantages of the upholstery cushions filled with water are that they leak easily and that upholstery cushions partially filled with water - these are allowed if they are cushioning should have an effect, be only partially filled - due to the resulting »wobble effect« do not offer sufficient support.

In contrast, the object of the present invention is to provide footwear with padding, in particular to create a ski boot, the padding of which has the aforementioned disadvantages of the known padding avoids because the new padding adapts itself to the anatomy of the foot and an excellent Hold guaranteed without painful pressure points on the foot or ankles produce.

To solve this problem, the footwear of the type mentioned is characterized by Use of a highly viscous, cold-flowable material as a cushioning material, which is used in continuous pressurization evades the acting pressure, with momentary pressurization the applied pressure, similar to a solid, opposes resistance, e.g. B. from dimethyl silicone base material mixed with boron oxide, stereospecific polybutadiene rubber or the like.

Shoes with padding,
in particular ski boots

Applicant:

Alden Wade Hanson, Midland, Mich. (V. St. A.)

Representative:

Dipl.-Ing. F. Weickmann,

Dipl.-Ing. H. Weickmann

and Dipl.-Phys. Dr. K. Fincke, patent attorneys,

8000 Munich 27, Möhlstr. 22nd

Named as inventor:

Alden Wade Hanson, Midland, Mich. (V. St. A.)

Claimed priority:

V. St. v. America January 2, 1963 (249 062)

This cushioning material has the property that it is due to its high viscosity at momentary he pressurization does not evade because it is too sluggish to be able to evade in a short time. When it is momentarily pressurized, it acts similarly to a solid.

With continuous pressurization, however, as it is z. B. when lacing boots, has that Upholstery time to evade. It slowly evades the applied pressure until it is completely

is adapted to be enveloped foot surface. Once this adjustment is made, the upholstery material gives everyone Shoe or boot roughly the properties of a

Made-to-measure shoe.

In the case of the footwear according to the invention, it is also possible to prevent any lace pressure that may occur to eliminate the need for a corresponding continuous foot at a suitable point Generated counter pressure, so that the cushioning material gives way there.

The figures explain the invention. It shows

F i g. 1 a perspective view of a part of an upholstery cushion that can be inserted into the footwear, which according to the invention is filled with the highly viscous cold-flowable material,

Fig. 2 shows an example of an arrangement of the cushion inside a ski boot,

Fi g. 3 shows a section along line 3-3 of FIG.

The padding generally consists of a highly viscous,

809 630/524

cold flowable material that can be quickly Resists deformation. This highly viscous cold-flowable material gives way to momentary Pressurization of the occurring pressure only insignificantly, with continuous pressurization however, it evades the acting pressure. Representative high viscosity, these properties having substance are z. B .:

a) Dimethyl silicone base material to which boron oxide is added; this substance is in the US under the Designation "bouncing putty" known (see USA patent specification 2431 878);

b) stereospecific polybutadiene rubber made by polymerizing butadiene with Lithium alkyl as a catalyst, with a content of more than 90% 1.4 addition (30 to 40% cis-1,4 adduct). This polybutadiene rubber has a relatively narrow molecular weight spectrum on, is amorphous, but has a linear structure and gel-free, is characterized by cold so flow out and does not have a springy effect (absence of nerve); it has good properties at low Temperatures, has a minimum of stickiness and causes at room temperature (23 ° C) better steel ball recess than natural rubber;

c) some epoxy resin gels;

d) gels of hydrated ferric oxide, aluminum, Vanadium pentoxide, zirconium dioxide;

e) gelatin gels or sols, fine suspensions of certain clays, especially bentonites, and

f) special protein mixtures.

The viscosities of these materials can also be increased by up to Height of the dead weight either a natural fiber material such as cotton, wool fibers or the like. Or a synthetic fiber such as polystyrene, nylon, acrylonitrile or the like.

The highly viscous padding material is enclosed in flexible sheet-like layers. Cornmen for this Leather or fabric, synthetic or natural rubber or plastics such as polyethylene, polyvinyl chloride, Polyamide or the like, in question. The edges of the flexible surrounding the highly viscous material Layers or foils are glued, welded or sewn together.

The cushioned cushion so formed is quite flat. It has a thickness of 1.5 to 15 mm, depending on Desire of the user. It is placed inside the boots, on either side of the ankles and - if desirable - also on the back. After tying the footwear according to the invention does the shoe wearer feel uncomfortable at first; after a few minutes - depending on the viscosity of the material - the cushioning material then begins to give way to the applied pressure and fits conform to the shape of the ankle.

The upholstery cushion is denoted by 10 in the figures. It consists of two impermeable, flexible layers, between which the highly viscous Padding material 12 is included. The cushion 10 is arranged inside a ski boot 13, which has a sole 14 and a heel 15. The cushion pad 10 is inside of the upper of the boot 13 near the ankle 16 of a foot 17 between the relative stiff upper leather and a stocking covering the foot 17. When using z. B. the one mentioned under b) Padding material can be a layer of this material between the outer and inner shafts a ski boot are introduced, such that the outer shaft as the outer flexible layer 11 and the inner shaft serves as inner flexible layer 11.

The upholstery cushion 10 can either be designed so that it completely covers the ankle joint of the foot 17 envelops, or in such a way that there are only the side parts 16 and the rear part of the ankle covered. In the latter case, a correspondingly padded tongue is also conceivable.

The upholstery made using the highly viscous material is not, like the one previously developed, Padding based on the air bubble principle is temperature-sensitive. This is special important for ski boots, as these are usually worn in a warm environment and in a cold environment to be used. The air-filled cushions shrink at lower temperatures, so that the support they offer to the ankles shortly after putting on the boots is lost.

In one experiment, one has a ski boot with air cushions and a ski boot in accordance with the invention Training compared to each other, whereby the cushioning material used in the USA as "Bouncing Putty" known material was used. In contrast, the ski boot designed according to the invention could be used Tie up the boot for comparison more tightly without making it uncomfortable.

It is also conceivable that the inventively used, Padding material known per se is also arranged in the ankle part of stockings or ski pants is.

Claims (3)

Patent claims: 1. Footwear with padding, in particular ski boots with at least one provided in the shaft Upholstery characterized by the use of a highly viscous cold flowable Material as cushioning material, which with continuous pressurization the acting Pressure evades, with momentary pressurization, opposes the acting pressure, similar to a solid, resistance, E.g. of dimethyl silicone base material mixed with boron oxide, stereospecific polybutadiene rubber or the like 2. Footwear according to claim 1, characterized in that double-shafted ski boots the cushioning material is housed between the outer and inner boot shafts is. 3. Footwear according to one of claims 1 or 2, characterized in that the cushioning material is enclosed by a tightly fitting cover. Considered publications:
U.S. Patent Nos. 2431878, 2444428,
2 531763, 2774152. 1 sheet of drawings 809 630/524 10.68 © Bundesdruckerei Berlin