Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Patent
1992-03-20
1993-06-01
Fidei, David T.
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
36132, 280613, A43B 504
Patent
active
052148653
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a stiff shell ski shoe comprising a heel located shock-absorbing device.
BACKGROUND OF THE INVENTION
Such a ski shoe has become accessible to the general public through products and catalogues since the ISPO '90 (San Marco 1991/Space 2001). This known design has an elastic element between the underside of a stiff shell and a sole made of an essentially strong or stiff material, which element absorbs shock forces and impacts which act onto the leg of the skier, mainly in the heel area. However, in the case of impacts from a horizontal direction unfavorable shearing strains can occur between the elastic element and the ski shoe parts made of stiff or hard material, which ski shoe parts rest on the element. This strain can result in undesired wear, which does not optimally guarantee the strength of the ski shoe needed for the release of a safety ski binding.
Further known designs are illustrated in CH-PS 587 032; the elastic devices or inserts in this patent have, however, the purpose of making the rolling movement during walking easier.
DE-OS 37 42 918 also illustrates elastic elements in the heel area in some of their embodiments, with the elastic elements being directly in or on the heel. The heel is thereby constructed in one piece with the sole or is fastened to the underside of the shell through a releasable connection. Since a stiff rib exists between the elastic elements, which rib transfers the forces directly from the heel onto the shell and thus onto the foot of the skier, the shock-absorbing effect acting in the vertical plane is here also lost. Only the forces occurring during a specific position of the ski shoe, for example during edging, can therefore be absorbed.
The purpose of the present invention is to bring help here and to assure, while maintaining the necessary strength characteristic, an effective shock absorption without limiting the active direction of force.
SUMMARY OF THE INVENTION
The objects and purposes of the invention have been met by providing a ski shoe having a stiff shell and a shock-absorbing device which includes an elastic element and a heel member, the elastic element being provided between an underside of the stiff ski shoe shell and the heel member. The elastic element is adapted to absorb vertical shock forces. The elastic element has a profile projecting upwardly from a plate-like section, which profile fits into a recess in an underside of the shell. An upwardly projecting support part on the heel member is received into a recess provided in the profile, the upper edge of the support part projecting higher than a plane containing the plate-like section of the elastic element.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in greater detail in connection with the drawings illustrating three exemplary embodiments. In the drawings:
FIG. 1 is a side view of a ski shoe embodying the invention;
FIG. 2 is a perspective view of the elastic element and the heel according to a first exemplary embodiment, FIG. 2a according to the second exemplary embodiment, and FIG. 2b according to the third exemplary embodiment;
FIG. 3 is a longitudinal cross-sectional view of a detail of FIG. 1 according to the second exemplary embodiment; and
FIGS. 4 and 5 are cross sections taken along the line IV--IV or V--V of FIG. 3.
DETAILED DESCRIPTION
FIG. 1 shows a ski shoe 1 in its entirety with an elastic element 3 and a releasable heel 4 on a stiff shell portion 2.
FIG. 2 shows an isometric view of the elastic element 3 and the heel 4 together in an exploded illustration. The elastic element 3 includes a plate 3a and an upwardly directed and self-contained profile 3b. In the top view, the plate 3a has a trapezoidal shape on its side facing the tip of the ski shoe, the region of the plate 3a remote from the tip of the ski shoe is designed as an arc.
The upwardly directed profile 3b has outwardly facing surfaces 3c, which extend within and essentially parallel to the outer contour of the plate 3a. The profile 3b c
REFERENCES:
patent: 3594929 (1971-07-01), Stoehr
patent: 4542599 (1985-09-01), Annori
patent: 4901454 (1990-02-01), Walkhoff
patent: 4937955 (1990-07-01), Bonaventure
patent: 4945659 (1990-08-01), DeMarchi et al.
patent: 5054213 (1991-10-01), Bonaventure
patent: 5086575 (1992-02-01), Bonaventure
Calzaturificio Brixia S.p.A.
Fidei David T.
Patterson M. D.
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