FR2586199A1 - Device having scales with progressive spacing and which are located projecting from the lower running sole of the ski - Google Patents

Abstract

The invention relates to a device having scales for the lower running sole of the ski. The scales are distributed according to a progressive spacing along the longitudinal axis and arranged according to the transverse axis so as to form a motif of the chevron type. Each scale is located projecting from the lower running sole and is composed of a profiled plane 2 and of sides 5 and 6 ending in a heel 4 whose edge is located on the line or the parallel of the juxtaposed but offset adjacent scales, thus forming a chevron.

Description

 The present invention relates to a device of the pro-aggressive tortoiseshell type projecting from the ski, the geometrical configuration and technical location of which give it appreciable advantages in the practice of cross-country or Nordic skiing, and of trekking.

In known devices of this kind, in addition to the traditional seal skins, there are various devices known under the generic term of scales. Most of these devices are said to be tiled, and generally have a recessed implantation in the lower sole of the ski, which does not favor upstream progressions. Whatever type of layout chosen, straight or chevron, the geometry of such devices does not allow easy practice of the skater's step, as well as a satisfactory trajectory based on an edge effect.

 The device according to the invention overcomes these drawbacks. I1 indeed has, in sufficient number, totally positive scales, either in relief, advantageously arranged in constant chevron, and whose spacings make each of the scales a directional micro-square and anti-recoil element.

Any scale is an inseparable entity from the whole, and its peculiarities reside in its contoured relief favoring gliding, its progressive longitudinal edges offset and its constant chevron arrangement ensuring directional support, whatever the slope, while providing real comfort and total safety in the practice of the so-called skater's step; the heel, for its part eliminating any jamming effect detrimental to sliding, and in steep climbs, to restraint, constitutes with its counterpart along the longitudinal axis of symmetry an effective backstop.

 According to a preferred embodiment, the device advantageously has scales arranged in a chevron, and in sufficient number on either side of the median longitudinal axis of each of the skis. Each of the scales is, always along the same axis, spaced regularly and sufficiently from its neighbors in the transverse direction. The longitudinal spacing will preferably be progressive, or at least by series of rows of N chevrons spaced differently, in order to avoid any resonance phenomenon due to regularity of implantation.

In order to obtain an optimal yield, the number of scales per broach of the chevron will advantageously be between three and five. It should be noted that in order to make each scale even more efficient, it is desirable that each of these be offset longitudinally with respect to the preceding and following scales.

 According to a variant, the chevron offset of the scales can be accentuated by an intermediate arrangement of one scale out of two pegged forward or backward. Such an arrangement of the scales increases the functional role of each of the scales.

 Figure 1 shows, in perspective, the detail of a scale, in an enlarged view.

 FIG. 2 represents, in profile, a cross-country ski equipped with the device.

 FIG. 3 represents a possible arrangement of the scales according to the invention.

 Figure 4 shows a variant of this arrangement.

 FIG. 5 represents the preferential arrangement of the scales of the device.

 The scale represented in FIG. 1 is that of a straight ski part, identifiable when looking at the lower sole (1), that comprising the device. Each scale consists of a profiled plane (2) located in the extension (3) of the lower sole and providing the essential relief and projecting of which the heel (4) is the expression.

Each of the blanks (5) and (6) constitutes a square on a reduced scale and has its edge advantageously parallel to the longitudinal axis of the ski. The angles (7) and (8) are complementary and position the heel edge (9) on the line or the parallel of the adjacent scales juxtaposed in offset. This characteristic arrangement having the effect, through the constant rafters which result therefrom, of bringing, in addition to the stability and the precision, the forcing of each of the skis upstream.

It should be noted that the heel (4) has a slight clearance angle (10) essential for manufacturing and advantageous for avoiding any effect of snow-stuffing.

 The device of Figure 2 highlights the implantation of the scales, in relief of the lower sole (1). In order not to distort the interpretation of the drawing, a single longitudinal row of scales is shown. The progressive implantation can, as here, be carried out by group of rows (11), (12), (13) and (14) whose space (15) within the group is identical, but different from the space (16) scales from another group.

It being understood that the device is located in the direction of advance of the ski, represented by the arrow.

 In FIG. 3, the rows of scales (17) or (18) are established regularly in an equidistant manner from the edge of the ski (19) or from its longitudinal median axis (20). This figure highlights the heel line (9) of each of the scales, as well as the asymmetry of any scale along the longitudinal axis (21).

The set of heel lines forms on each side of the longitudinal median axis the branches of the rafter (22). The spacing (23) between each scale of the same transverse row being sufficient to preserve the specific characteristics of each of them, and as described in FIG. 1.

 FIG. 4 represents a variant comprising a regular and accentuated offset (24) of the scales in the longitudinal direction. Each of the blanks (5) and (6) being distant from that of the nearest scale, it goes away.

follows a better edge gain.

 The device shown in FIG. 5 will advantageously be retained preferentially. I1 indeed comprises a rational implantation of the scales of the device according to the invention. Each of the scales (25) is offset relative to its counterpart (26) of the next or previous row, which results in either a bringing together (27) of the central scales (28) and (29), or a distance (30) scales (31) and (32) located on either side of the longitudinal axis (20).

This figure highlights the progressive implantation of the rows of scales (17) and (18), as well as the spacing (15) or (16) within each group.

In order to avoid any phenomenon of resonance, the groups of rows, when this layout mode is chosen for the progression of the spacings, will be of an advantageously different number from one group succeeding or preceding another.

 The device according to the invention is particularly intended for the manufacture or repair of the lower soles of so-called cross-country or touring skis, provided that the coating material can be moldable, overmouldable, or more simply replaceable, such as certain plastics say thermoplastics.

Claims (10)

 1) Device with scales with progressive spacing, characterized in that each scale is located projecting from the lower sole (1) of the ski and consists of a profiled plane (2) and blanks (5) and (6) terminated by a heel (4) whose edge (9) is located on the line or the parallel of the adjacent scales juxtaposed but offset and thus forming a chevron (22) from the implantation of the scales on either side of the longitudinal axis (20).  2) Device according to claim 1 characterized in that the profiled plane (2) is located in the extension (3) of the lower sole (1) bringing in this the protruding scale of the plane of the sole.  3) Device according to claims 1 and 2 characterized in that each of the scales (28) and (29) or (31) and (32) close to the longitudinal median axis (20) is separated from its neighbors (28) for (29) or (32) for (31) by sufficient space (27) or (30).  4) Device according to claims 1 and 2 characterized in that the line of heels (9) forms the branches of each of the constant rafters (22).  5) Device according to claims 1 and 4 characterized in that the progressive implantation of the scales can be achieved by group of rows (11), (12), (13) and (14) including the space (15) within of the group is identical but different from the space (16) of the scales of another group.  6) Device according to claims 1, 2 and 4 characterized in that the blanks (5) and (6) form with the heel line (9) angles (7) and (8) complementary on either side of the axis of asymmetry (21).  7) Device according to claims 1, 2, 3, 4 and 5 characterized in that each of the scales (25) is offset relative to its counterparts (26) of the next or previous row which results in a kidnapping (27) ) central scales (28) and (29) or a distance (2C) from the scales (31) and (32) located on either side of the longitudinal axis (20).  8) Device according to the preceding claim characterized in that the space (23) between two scales of the same transverse row is sufficient to maintain the specific characteristics of each of them.  9) Device according to the preceding claims taken as a whole characterized in that each of the heels (4) has a relief angle (10) facilitating the manufacture of the bottom sole (1) while avoiding the effect of stuffing by snow .  10) Device according to the preceding claims taken as a whole characterized in that each of the blanks (5) and (6) constitutes a square on a reduced scale whose edge is advantageously parallel to the longitudinal axis of the ski (20).