EP2324892A1 - Alpinski mit breiter Schaufel und starker Taillierung - Google Patents

Alpinski mit breiter Schaufel und starker Taillierung Download PDF

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Publication number
EP2324892A1
EP2324892A1 EP10014688A EP10014688A EP2324892A1 EP 2324892 A1 EP2324892 A1 EP 2324892A1 EP 10014688 A EP10014688 A EP 10014688A EP 10014688 A EP10014688 A EP 10014688A EP 2324892 A1 EP2324892 A1 EP 2324892A1
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EP
European Patent Office
Prior art keywords
ski
width
value
skis
spatula
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10014688A
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English (en)
French (fr)
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EP2324892B1 (de
Inventor
Bertrand Krafft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salomon SAS
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Salomon SAS
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/0405—Shape thereof when projected on a plane, e.g. sidecut, camber, rocker

Definitions

  • the invention relates to gliding machines, in particular, the invention relates to skis for the practice of alpine skiing.
  • a pair of alpine skis consists of two boards that are substantially identical or at least symmetrical with respect to one another.
  • One of the basic techniques of skiing requires that to go in a straight line, the user maintains his body in a plane perpendicular to the ground while when he wants to turn, he tilts his body towards the inside of the turn. This has a direct consequence on the positioning of the skis in relation to the terrain.
  • the skis are flat on the ground, they rest on their lower surface of sliding, called sole.
  • sole When turning, the user gives his skis an inclination to the ground. It is then the lower edges, commonly called the edges, which come into contact with the ground. In top view, the outline of the lower edges is called dimension lines.
  • the geometry of the dimension lines plays a determining role in the behavior of the ski and in particular, the dimension lines define the type of steering that must be put in place. the skier.
  • the edges are in particular defined as the lower edges of the ski which are located between the widest area of the ski located at the front of the ski and that located at the rear.
  • the dimension lines had very large radii, usually greater than 30 m.
  • the maximum width in the front portion and the maximum width in the rear portion had substantially the same values.
  • the zone of minimum width of the ski also called narrow point, is in the middle of the ski, at the level of the fastening zone of the shoes.
  • the document DE 41 12 950 proposed a new form of ski with the aim of improving cornering behavior and making changes of direction faster.
  • This form of ski is characterized in that the concave portion is reduced in length and has a reduced radius compared to what was done at the time.
  • This concave portion is longitudinally substantially centered on the middle of the ski.
  • the ski's dimension lines are constituted by rectilinear portions. These rectilinear portions of dimension line whose length is between 10 and 20 cm ensure the junction between the concave portion and on the one hand, the spatula and on the other hand the heel.
  • Such a geometry gives a ski whose turnability can be improved but whose behavior is not fluid.
  • skis From the 1990s, the dimension lines have widened, the rays have decreased.
  • the ski technique has also changed to reduce or eliminate the lightening during the turn.
  • These skis are particularly adapted to the practice on groomed track.
  • Such a ski is, for example, described in the patent application EP 579 865 .
  • a ski whose minimum width of the ski is at the fastenings in the central part of the ski, and is 63 mm while the widths at the spatula, the front part of the ski, and at the heel, its rear part, are respectively 110 mm and 100 mm. Skis of this kind made it possible to approach a new practice of skiing, the "carving", that is to say the practice of cut corners.
  • skis shorten and thicken as shown in the patent specification US 5,603,522 .
  • skis of length less than 1730 mm are described, the spatula of which has a width of 110 and 120 mm for a pad having a width of between 82 and 99 and a heel of width of between 105 and 115 mm, the difference between the width of the spatula and that of the heel being maintained between 4 and 12 mm.
  • the objective that had led to the realization of such skis was to optimize the torsional stiffness by combining a relatively large width with a relatively small length. This bias means that these skis are not very versatile. It is difficult to design a ski with this geometry that will have an optimal behavior both on the track and off-piste.
  • skis It is also difficult to design a ski according to this geometry that can be adapted to different skiers with different technical levels or commitment (beginners, leisure, competition).
  • the shortening of the length of the skis did not, however, call into question the orientation that had been taken during the 1990s for parabolic skis.
  • these skis always have the characteristic that the area of minimum width of the ski is in the center of the ski, at the middle of the ski boot.
  • skis Since the 2000s, the practice "freeride", essentially practical off-piste snow virgin, is developing and specific skis have been developed by manufacturers. These skis are very wide and have pad widths that can reach 140 mm. These skis are of course not at all versatile, they are very difficult to maneuver on the track and are reserved for experienced skiers. Indeed a very large width in the central part makes the control on track require muscular and almost impossible for a beginner skier or having skied little. Such skis are for example described in the patent application US 2008/0042400 .
  • the tip of a ski is the part of the ski that is bent upward to easily overcome obstacles.
  • the length of the spatula is defined by the distance separating the tip of the ski from the front contact line (the front limit of the contact zone of the lower face of the ski on a flat surface). We can choose to determine this length by measuring the projection on a flat surface, it is the projected length, or to measure the nominal length, it is the developed length. In the rest of the talk, when we talk about length, it will be developed length.
  • the object of the invention is to provide an alpine ski that has optimal behavior both on and off piste.
  • the objective of the invention is to provide a ski that offers a skier with little practice and / or low muscular strength the ability to ski in all circumstances, on any type of snow, on the piste or off-piste.
  • the objective of the invention is to provide a new ski family that allows a new technique of alpine skiing.
  • the object of the invention is also to provide a new family made up of a plurality of pairs of skis, all of which have optimal behavior on and off-piste but which are distinguished from each other by a preferential aptitude on the runway or off-piste.
  • the object of the invention is also to provide a ski whose geometry combines the advantages of skis with side lines dug and those of skis with wide side lines.
  • the object of the invention is also to provide a ski which has a spatula promoting the behavior in the powder snow.
  • the object of the invention is also to provide a ski whose front end does not vibrate during its use on the track.
  • the objective of the invention is to provide a ski that offers a resolutely new behavior in that the front part of the ski (the one located in front of the ski boot) and the rear part of it (the one located behind of the shoe) each offer a different behavior.
  • a ski provided for the practice of alpine skiing comprising a front portion, a rear portion and a central portion, adapted to receive shoe attachment means, which are interleaves between the front part and the rear part; ski in which the front portion comprises a portion of greater width of value "S", which is between 135 mm and 165 mm, and wherein the difference " ⁇ t" (delta-t) between the value "S" of the maximum width of the front part and the value "T" of the maximum width of the rear part (T) is greater than 25 mm.
  • this ski comprises a gliding sole intended to be in contact with the snow, an inner structure and a top.
  • the ski of the figure 1 is characterized by resolutely new dimension lines.
  • the central portion 4 of the ski receives the safety fasteners 5 which hold the ski boot of the user (not shown).
  • the smallest width of the central portion 4, called shoe, has a value C equal to 88 mm. This is a relatively broad value compared to skis as they were designed until the early 1990s. However, the widths of skis currently recommended by powder skis are not achieved. Such a width between 60 and 120, preferably 70-100 gives the ski a great versatility of use and makes it accessible to a greater number of users, from beginners to advanced skiers.
  • the figure 1b shows a top view in detail of the central part of the ski.
  • the middle shoe line is a marking worn on the ski by the manufacturer and which indicates the recommended positioning of the ski bindings so that the shoe, once attached to the ski, is centered on this line of the middle of the shoe.
  • the line where is the smallest width of the central part commonly called the narrow point of the ski is moved back relative to the line of the middle of shoe (MC) a value greater than 150 mm.
  • the distance LC separating the narrow point and the middle of the shoe is 271 mm.
  • the rear part 3 of the ski has a zone of greater width of value T between 90 and 110 mm.
  • Such a width allows a relatively easy support at the end of the turn, without the need to take very strong support on the edges.
  • the value T is 100 mm.
  • the heel described at figure 1 is a heel with a pointed shape. This is only one of the many forms that can take the heel, this form is not limiting in the context of the invention.
  • the front portion has a front portion 2, the maximum width, the value S, is much greater than the maximum width of the heel portion.
  • the difference " ⁇ t" (delta-t) between the value "S" of the maximum width of the front portion 2 and the value "T” of the maximum width of the rear portion 3 is greater than 25 mm. It has also been possible to demonstrate that these effects are amplified to the point of marking a significant difference in behavior with the skis known in the prior art, as soon as the delta " ⁇ t" value is greater than 32 mm. Indeed, with a value " ⁇ t” equal to or greater than 32 mm, the difference in behavior generated by the geometry of the front portion and the rear portion of the ski becomes more significant.
  • the length of the spatula to a value of 190 mm.
  • it will be chosen, on the other hand, to limit the maximum width of the spatula "S” as a function of the width of the rear part "T” so that the value " ⁇ t" (delta-t) remains lower. at 60 mm, preferably less than 55 mm.
  • the front portion 2 has a maximum width "S" which is equal to 150 mm, there is a difference " ⁇ t” equal to 50 mm.
  • the ski described at figure 1 therefore has a spatula of very large width, that is to say a width which is of the same order as the widths of skate spatula currently known but which are exclusively intended for use "Freeride".
  • the current "freeride" skis are much too wide to offer easy driving on a groomed track. Thanks to its wide spatula, the ski 1 enjoys a good behavior in deep snow. In addition, its driving on the track is much easier than that of a ski type "Freeride". This is a particularly versatile ski whose track behavior as off-piste is optimized, especially because of a minimum width of the central portion equal to 88 mm.
  • a multi-purpose ski such as the ski described in figure 1 we will try to limit the volume out of snow while keeping a sufficiently long spatula. To do this, we will favor pointed spatulas and the line of greater width at the front is at a relatively low height as can be seen a little further in the text.
  • the figure 1a shows the "sharp" character of the outline of the front portion 2 of the ski 1. This sharp character is highlighted by measuring the width of the ski near the front end of the ski, the tip 6. This measurement, which 'P' is made at a distance of 30 mm (developed length) from the point 6 of the ski 1. In the case in point, the value of P is 55 mm.
  • spatula has a pointed contour insofar as the value "P" is less than or equal to half (50%) of the maximum width of the front part 2, the value "S" (P ⁇ 0.5 x S).
  • a pointed spatula is relatively long.
  • the skis according to the invention having the best performance are those which have a spatula length of between 150 and 320 mm.
  • skis according to the invention sharp spatulas (P ⁇ 0.5 x S) will be used. It should however be noted that skis according to the invention whose spatulas are moderately pointed, that is to say having a value "P" less than or equal to 60% of the value "S”, give satisfactory results. On the other hand, we can also consider skis according to the invention having round spatulas.
  • the figure 2 shows in side view the ski 1 of the figure 1 .
  • the ski rests on a flat surface 9 at the level of two lines; the front contact line 7 and the rear contact line 8.
  • the length of the spatula "Ls”, measured between the line of greater width and the tip 6 of the ski is equal to 256 mm.
  • the front contact line is located near the line 10 of greater width of the spatula of the ski. As can be seen on the figure 2a this proximity is reflected by the fact that, at the level of the line of greater width, the sole of the ski is at a height "Hs", preferably less than 10 mm.
  • the ski described at figure 1 is a ski whose total length is equal to 1900 mm.
  • this is not a limitation of the invention, and the particular geometry of the invention can be easily adapted for longer or shorter skis.
  • the figure 3 represents a second embodiment of the invention. As in the embodiment described above, it is a ski designed for versatile use track and off-track with a slight predisposition for carving skiing and use in the fresh snow.
  • the widest ski width, the value "T”, is 105 mm
  • the minimum width of the central part 4 is 80 mm
  • the largest width of the spatula the value "S” is 140 mm.
  • the spatula is very long, the value "Ls” is 300 mm, and very pointed, the value "P” is 42 mm, which corresponds to 30% of the largest width of spatula.
  • the figure 3a is a detailed view of the ski described in figure 3 which makes it possible to visualize the relation between the different characteristic lines of the half-length back of the ski.
  • the middle shoe line, MC is placed at a distance LA from the line of greater width heel, T.
  • the length LA corresponds to a certain percentage of the total length of the dimension line.
  • the line of smaller ski width in the central part, also called the narrow point, and noted C in the figure is located between the lines MC and T.
  • the distance LC separating the lines C and MC is greater at 150 mm. That is to say, the narrow point is behind the shoe when it is fixed on the ski.
  • the figure 4 represents a third embodiment of the invention for which the values S, C and T are respectively 160, 103 and 117 mm.
  • the spatula is relatively long, the value "Ls" worth 300 mm.
  • This is a particularly suitable ski for off-piste practice. It is a freeride type ski to use one of the categories currently used by manufacturers to segment their product offering.
  • the front part 2 is also characterized by its "sharp” character. Indeed the width "P" measured at a distance of 30 mm from the tip 6 is equal to 53, that is to say corresponding to about 34% of the value of the width "S" of the spatula
  • the figure 5 represents a fourth embodiment of the invention for which the values S, C and T are respectively 140, 68 and 90 mm.
  • the spatula has a length, "Ls", of 190 mm and has a pointed shape with a value "P” equal to 57 mm (40% of the value S). This is a particularly suitable ski for track practice.
  • Table 1 summarizes the geometric data of a complete range of skis according to the invention. These skis are characterized by an improved versatility compared to the skis known until now, while each having a field of predilection.
  • the ski range presented in Table 1 comprises 18 skis each having a different geometry but which share all the innovative features of the invention. It should be noted that the total length of the skis is not mentioned in this table. Each of the skis constituting this range has been developed in an average length of between 2000 and 1600 mm. To build the global offer, the manufacturer will decline each ski in different sizes to fit each geometry to the weight and size of the users.
  • the first three skis on the board including the ski represented in the figure 5 , are skis that will give their best performance on track due to a relatively small pad width. However, when the skier will practice off-piste with one of these skis, he will benefit from a good lift thanks to a long and wide spatula. In the case where, as in figure 5 , the ski has a pointed spatula, these skis will be perfectly adapted to the catch of speed and for example to the practices of competition of "descent" and "giant slalom".
  • the eight skis at the bottom of the board are designed for predominantly off-piste use. However, thanks to a minimum width in the central portion not exceeding 130 mm, and preferably not exceeding 120 mm, these skis is very easy to fly on the track. On piste, these skis will not ask the user, no more driving effort than skis specially designed for track practice. Here too, the choice of a pointed spatula, as for the ski represented in the figure 4 will further increase the versatility of use of these skis.
  • skis which are between 70/30 and 30/70 ratio of track suitability to off-road ability, are skis that are designed for the track and the off-piste.
  • the skis represented at figures 1 and 3 are examples of such versatile skis.
  • one aspect of the invention is related to the fact that the narrow point is retracted from the boot medium by more than 150 mm, preferably greater than 180 mm.
  • Table -2 compiles the values of four different ski geometries sharing the same width of spatula and heel, but whose narrow point is at different positions.
  • Table 2 - S VS T .delta.t LB LC 160 106 125 35 515 177 160 118 125 35 400 290 160 123 125 35 261 431 ( figure 6 ) 160 125 125 35 0 692 ( figure 7 )
  • the first two lines of the table correspond to ski geometries well suited for off-piste practice, whose position of the narrow point with respect to the middle of the shoe, at 177 and 290 mm, respectively, make it possible to provide geometries which ensure good directional mobility to skiing.
  • the third line of the table corresponds to a geometry of which an example of ski is described in figure 6 .
  • the line of the narrow point is very remote.
  • the distance separating the narrow point from the line of greater width of the heel corresponds substantially to one third (1/3) of the distance separating the line of greater width from the heel to the middle of the shoe.
  • the narrow point retreat improves the stability of the ski at high speed and due to a difference in spatula / heel width equal to 35 mm, this ski retains good versatility.
  • the figure 7 shows a ski whose difference spatula / heel is also equal to 35 mm, but whose narrow point is moved back as far as possible, that is to say up to the level of the broad heel point.
  • the narrow point line C and the line of greater width heel T merge.
  • the complete dimension lines of the ski join the narrow point C to the line of greater width spatula S.
  • the dimension line is a curved line whose average radius of curvature may be greater than that of the other embodiments of the invention. For example, the average radius of the dimension line may exceed 30 m or 50 m. This is called a stretched sideline.
  • the ski represented at figure 7 offers a versatility of practices, including freeride practice combined with excellent directional stability.

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EP10014688.5A 2009-11-20 2010-11-17 Alpinski mit breite Schaufel und starke Taillierung Active EP2324892B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0905587A FR2952829B1 (fr) 2009-11-20 2009-11-20 Ski alpin

Publications (2)

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EP2324892A1 true EP2324892A1 (de) 2011-05-25
EP2324892B1 EP2324892B1 (de) 2016-08-31

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US (1) US20110121542A1 (de)
EP (1) EP2324892B1 (de)
FR (1) FR2952829B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2514495A1 (de) * 2011-04-18 2012-10-24 Head Technology GmbH Rockerski mit mindestens zwei Taillierungen
FR3019055A1 (fr) * 2014-03-25 2015-10-02 Eric Bobrowicz Renforts pour skis larges

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926735B1 (fr) * 2008-01-25 2010-03-26 Salomon Sa Ski alpin avec moyens de reglage
FR2978671B1 (fr) * 2011-08-01 2015-01-16 Serge Dupraz Ski a lignes de cote creusees et spatule profilee
EP3115090B1 (de) * 2015-06-19 2019-01-02 Anton F. Wilson Sich automatisch anpassender ski

Citations (11)

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CH503601A (de) 1969-05-13 1971-02-28 Bosch Gmbh Robert Bremssystem für Kraftfahrzeuge
CH503501A (de) * 1969-02-27 1971-02-28 Gmuer Peter Ski
US4085947A (en) * 1976-01-12 1978-04-25 Sarver John J Rearwardly controlled snow skis
FR2509185A1 (fr) * 1981-07-07 1983-01-14 Brousselle Andre Ski, notamment pour neige profonde
US4778197A (en) * 1985-01-07 1988-10-18 Richard Floreani Short ski having a hollow section filled with a flowable mass
DE4112950A1 (de) 1990-05-04 1991-11-07 Rohrmoser Alois Skifabrik Schi mit einem trapezfoermigen breitenverlauf
EP0579865A1 (de) 1992-06-19 1994-01-26 ELAN SKI, podjetje za proizvodnjo smuci, d.o.o. Abfahrts-Ski
US5667238A (en) * 1993-03-03 1997-09-16 Sarver; John J. Ski having compound curve undersurface
US6603522B1 (en) 1999-09-09 2003-08-05 Citizen Watch Co., Ltd. Liquid crystal shutter
US20080042400A1 (en) 2006-08-10 2008-02-21 Armada Skis, Inc. Snow riding implement
EP1925344A1 (de) * 2006-11-22 2008-05-28 Salomon S.A. Skiprofil Kurve

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US4340241A (en) * 1980-04-14 1982-07-20 Crocket Danial E Ski
US4487426A (en) * 1981-06-08 1984-12-11 Kabushikigaisha Nishizawa Ski
CA1201460A (en) * 1985-06-25 1986-03-04 David Fels Ski - alpine
FR2594346B1 (fr) * 1986-02-19 1988-09-30 Rossignol Sa Ski de fond
US4826201A (en) * 1987-07-28 1989-05-02 Varan Cyrus O Ski with increased maneuvering ability
FR2652507B1 (fr) * 1989-09-29 1991-12-13 Rossignol Sa Ski de neige, procede pour sa fabrication et dispositif pour la mise en óoeuvre de ce procede.
US5603522A (en) * 1991-08-29 1997-02-18 Nelson; Paul N. Wide short ski
US5405161A (en) * 1994-02-04 1995-04-11 Dennis Young Alpine ski with exaggerated tip and tail
FR2804337B1 (fr) * 2000-01-28 2002-03-08 Rossignol Sa Ski alpin
FR2845611B1 (fr) * 2002-10-15 2004-12-03 Rossignol Sa Planche de glisse sur neige a spatule et a releve de talon ameliores
DE102008034293A1 (de) * 2008-07-22 2010-01-28 Marker Völkl (International) GmbH Ski, insbesondere Abfahrtski

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH503501A (de) * 1969-02-27 1971-02-28 Gmuer Peter Ski
CH503601A (de) 1969-05-13 1971-02-28 Bosch Gmbh Robert Bremssystem für Kraftfahrzeuge
US4085947A (en) * 1976-01-12 1978-04-25 Sarver John J Rearwardly controlled snow skis
FR2509185A1 (fr) * 1981-07-07 1983-01-14 Brousselle Andre Ski, notamment pour neige profonde
US4778197A (en) * 1985-01-07 1988-10-18 Richard Floreani Short ski having a hollow section filled with a flowable mass
DE4112950A1 (de) 1990-05-04 1991-11-07 Rohrmoser Alois Skifabrik Schi mit einem trapezfoermigen breitenverlauf
EP0579865A1 (de) 1992-06-19 1994-01-26 ELAN SKI, podjetje za proizvodnjo smuci, d.o.o. Abfahrts-Ski
US5667238A (en) * 1993-03-03 1997-09-16 Sarver; John J. Ski having compound curve undersurface
US6603522B1 (en) 1999-09-09 2003-08-05 Citizen Watch Co., Ltd. Liquid crystal shutter
US20080042400A1 (en) 2006-08-10 2008-02-21 Armada Skis, Inc. Snow riding implement
EP1925344A1 (de) * 2006-11-22 2008-05-28 Salomon S.A. Skiprofil Kurve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2514495A1 (de) * 2011-04-18 2012-10-24 Head Technology GmbH Rockerski mit mindestens zwei Taillierungen
FR3019055A1 (fr) * 2014-03-25 2015-10-02 Eric Bobrowicz Renforts pour skis larges

Also Published As

Publication number Publication date
EP2324892B1 (de) 2016-08-31
US20110121542A1 (en) 2011-05-26
FR2952829B1 (fr) 2012-01-20
FR2952829A1 (fr) 2011-05-27

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