Boots – shoes – and leggings – Inside slippers
Patent
1997-08-26
1999-08-17
Kavanaugh, Ted
Boots, shoes, and leggings
Inside slippers
36 505, 36 84, 36 9R, A43B 504
Patent
active
059375426
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to boots and more particularly concerns an internal liner for a sport boot.
2. Description of Background and Relevant Information
Certain sports, such as walking, gliding or rolling sports require that a user utilizes boots having an internal lining; that is the case for hiking, skiing, snowboarding, roller skating, cycling.
The liner used within a boot must perform one or more basic functions, such as shock absorption, distribution or evacuation of humidity, thermal insulation, management of comfort of the user's foot and/or lower part of the leg, etc.
To perform this(these) basic function(s), the liner must be kept in contact with the foot. Generally, liners are made of foams of plastic materials, woven fabrics, layers of plastic materials or rubber, or of combinations of these materials. The liners thus made have a sufficient tensile strength, such that tightening means can bring flaps of the upper closer to one another and to tighten the liner around the foot.
An example is given in the document DE 919 088 which proposes a liner including a sole, an upper and means for tightening the liner on the foot. These tightening means include textile strips affixed to the sole or to the upper, a lace making it possible to exert tensile stresses on the strips to bring flaps of the upper closer to one another and to tighten the liner on the foot.
The necessity for the liner to have an upper and a sole that are sufficiently resistant to tensile stresses is a limitation for the choice of materials. It is not possible, with the known conventional liners, to select materials that might perform the basic functions better, but are not mechanically very resistant.
SUMMARY OF THE INVENTION
One of the objects of the invention is to eliminate these problems of tensile strength in a liner that is made of the best materials.
Another object of the invention is to obtain a satisfactory tightening, on the foot and/or the lower part of the leg, of a liner made with materials that are not mechanically very resistant.
Yet another object of the invention is to propose an easy and inexpensive construction of the liner.
To this end, the invention proposes a liner for covering a foot which includes a sole and an upper, a tightening means making it possible to tighten the liner on the foot. The liner according to the invention is characterized in that the sole and the upper are made out of materials with low resistance to tensile stresses, and in that the tightening means surrounds at least a portion of the liner by being arranged outside thereof.
This arrangement makes it possible to separate the tightening function for keeping the liner in contact with the foot from the other functions performed by the liner. One advantage of this arrangement is the possibility of using high performance materials to ensure any basic function of the liner independently of its tightening on the foot.
According to a preferred arrangement, the tightening means surrounding the liner according to the invention includes at least one strap whose ends can be positioned with respect to one another by a positioning means. Each strap makes it possible to uniformly distribute a tightening force around the foot. It follows advantageously that any point stress is eliminated.
Still preferably, each strap of the liner is at least partially movable with respect to the liner in a direction of tightening or loosening of the foot. Therefore, the strap can slide with respect to the liner, which advantageously reduces the friction of the liner on the foot and prevents any point deformation of the liner.
BRIEF DESCRIPTION OF THE INVENTION
Other characteristics and advantages of the invention will be better understood along the description that follows, with reference to the annexed drawing illustrating, by way of a non-limiting example, how the invention can be embodied, and in which:
FIG. 1 is a perspective view of a liner according to the invention;
FIG. 2 is a cross section along II--II of
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Kavanaugh Ted
Salomon S.A.
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