Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Patent
1987-11-19
1990-07-03
Kee Chi, James
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
36 585, 36113, A43B 504, A43B 500, A43B 2328
Patent
active
049379518
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a system for securing a foot or inner shoe in a ski boot or climbing boot having tension elements which extend from the instep over a deflection point to a tiltable rear part of the shoe and can be adjusted by means of a clamping element.
In arrangements of the aforementioned type, a plate located in the instep area is usually secured by means of a cable line extending over a deflection point situated on the periphery of the tiltable rear part through a tightening buckle having a swivel axis oriented essentially transversely with respect to the longitudinal axis of the shoe. The improvement in hold of the foot in the shoe of these types of constructions results primarily from drawing the heel of the foot towards the back of the shoe through a thightening force applied to the instep plate. The large forces often applied to tension elements of this type also result in the application of a more or less high force to the tiltable rear part, due to the forward position of the rear flap. Whenever the swivel axis of the tiltable rear part is not identical with the deflecting point, for kinematic reasons, a corresponding change in the tightening force also occurs due to swivelling of the rear flap, a change which would also occur unintentionally, particularly during skiing, due to the more or less extensive forward pressures exerted on the trunk of the shoe. In order to minimize this effect, in devices in the prior art, the deflecting point for tension elements as a rule is arranged close to the outer contour of the tiltable rear part, and the tension element is led through the shell at the deflecting point and is deflected to the exterior side of the tiltable rear part.
A system of the aforementioned type is found, for example, in EP-A-No. 53 340, in which the deflecting points may, for example, be formed by tubes embedded in the material of the shell. In this known type of structure, the tension elements are steel cables which are flexibly applied to a tongue part, extending, like a saddle, over the front side of the shell.
A main object of this invention is to provide a system of the aforementioned type in which, largely without regard to the position of the trunk of the shoe relative to the shell, a definable tightening force can be introduced into a tension element in the interior of the shoe which permits a securing of the foot or inner shoe in the interior of the shell without introducing a one-sided pull in the direction of the heel. Thus, according to the innovative structure disclosed herein, a stabilization and securing of the inner shoe or foot is achieved in such a way that not only is the heel of the foot pressed toward the rear of the shoe by means of the tightening force but also the ankle part of the foot is held in a desired position. At the same time, the invention has the objective of introducing the necessary clamping force in such a way that, even when the trunk of the shoe swivels relative to the shell, only minor fluctuations in tension force result, and that large adjustments are made possible through use of a comparatively short adjustment path. In order to achieve these objectives, the invention is comprised essentially of one or more tension element(s) in the area of the heel or, respectively, of the Achilles tendon, which is (are) secured within the tiltable rear part and is (are) guided over a deflection point located in the heel or ankle area, and which, either at the deflection point or somewhere between the deflection point in the heel or ankle area and the instep, is (are) connected with a clamping element associated with a tightening device located on the exterior surface of the shoe shell. Since a clamping element is connected to the tension element at the deflection point or between the deflection point of the tension element or tension elements in the heel or ankle area, the tightening device can be secured in a desirable manner in the instep area as well as in the trunk area at either the front or rear surface of the shoe. Since force from the clampin
REFERENCES:
patent: 4160332 (1979-07-01), Salomon
patent: 4583306 (1986-04-01), Paris
patent: 4590691 (1986-05-01), Oliviero
patent: 4620379 (1986-11-01), Sartor
patent: 4653204 (1987-03-01), Morell et al.
patent: 4698922 (1987-10-01), Sartor
patent: 4719709 (1988-01-01), Vaccari
Chi James Kee
Koflach Sport Cesellschaft m.b.H.
Rosden Peter E.
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