Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Patent
1987-11-19
1989-04-25
Kee Chi, James
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
36 585, 36 88, A43B 504, A43B 714
Patent
active
048234850
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a system for securing a foot or inner shoe in the toe or instep region of a shell, particularly of a ski boot with a tiltable rear part, having plate-shaped parts that overlap the instep or the inner shoe and are adjustable relative to the shell.
Based on CH-PS No. 590 625, it is known to arrange, in the toe or instep area of a shoe, a vertically adjustable instep plate that, by means of adjusting elements, such as adjusting screws, can be pressed against a foot or an inner shoe from above. A good distribution of pressure without annoying pressure points will be achieved in this case if a sufficiently rigid instep plate is used. However, relatively rigid instep plates of this type adapt themselves inadequately to the irregular shape of the instep of a foot and, as a rule, only result in the feeling of a better fit without significantly improving the hold. Furthermore, a lateral hold of the foot in the shoe cannot be guaranteed through use of instep plates which are adjustable only from above. CH-PS No. 614 357 discloses a system of the aforementioned type in which straps that were laterally sewn onto the shoe or shell are tightened with respect to one another by means of an adjusting element. If undesirable pressure points are to be avoided in this type of construction, the straps must be relatively flexible, and, concomitantly, the lateral hold will be improved. However, if, in addition, the foot is to be held against the sole, other undesirable pressure points may still easily occur by using this same type of construction. Instep plates on which pressure is exerted by means of a cable pull are also described, for example, in AT-PS No. 373 478. Such cables pull the foot into the heel area and in this way may improve the overall hold of the foot in the shoe. This type of construction provides adjustability and adaptability, at best, only over a relatively narrowly defined area and inadequately accommodates irregular foot shapes.
A main object of this invention is to provide a system of the aforementioned type by means of which the instep region can be secured precisely over a large length without any bothersome pressure points even in the case of varying foot shapes, and, in this way, the hold of a foot in an inner shoe or a shoe generally can be improved significantly. In order to achieve this objective, the invention is comprised essentially of two plate-shaped parts or tabs which are connected at the exterior side of the sole on both sides of the longitudinal center plane of the shoe and overlap one another in the instep region while sliding along one another. By means of the flexible connection of the two mutually overlapping plate-shaped parts to the outer sole, it is first ensured that, when pressure is applied to these parts, a minimum width remains in the lateral areas of the foot without annoying pressure points. The main part of the pressure is exerted on the instep region. Therefore, a large measure of adaptability to various instep shapes is achieved since the two mutually overlapping parts, by sliding along one another, can adapt themselves more precisely to the shape of a foot than can one correspondingly stiff plate. In contrast to highly flexible straps, this type of construction makes it possible to provide a good distribution of pressure on the top side of the instep of a foot without generating lateral pressure points. The connection of the mutually overlapping plate-shaped parts to the sole may occur in a simple manner through webs which may form one piece with the material of the sole or may be welded or glued to it. In this way, large spaces in the lateral areas of the plate-shaped parts are kept free and, consequently, cannot become the source of lateral pressure points.
According to a preferred embodiment of the invention, the plate-shaped parts extend in the longitudinal direction of the shoe over a region that corresponds to at least half, and preferably two thirds, of the length of the instep. By means of this longitudinal course of the plate-shaped parts
REFERENCES:
patent: 4192087 (1980-03-01), Salomon
patent: 4253251 (1981-03-01), Salomon
patent: 4583306 (1986-04-01), Paris
patent: 4590691 (1986-05-01), Olivieri
patent: 4638578 (1987-01-01), Eiteljorg II
patent: 4670999 (1987-06-01), Olivieri
patent: 4719670 (1988-01-01), Kurt
Chi James Kee
Koflach Sport Gesellschaft GmbH & Co. KG
Rosden Peter E.
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