EP0657192A1 - Ski mit angepasste Strukturierung Abhängig von das Gebiet des Gleitfläches - Google Patents

Ski mit angepasste Strukturierung Abhängig von das Gebiet des Gleitfläches Download PDF

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Publication number
EP0657192A1
EP0657192A1 EP94116597A EP94116597A EP0657192A1 EP 0657192 A1 EP0657192 A1 EP 0657192A1 EP 94116597 A EP94116597 A EP 94116597A EP 94116597 A EP94116597 A EP 94116597A EP 0657192 A1 EP0657192 A1 EP 0657192A1
Authority
EP
European Patent Office
Prior art keywords
width
ski
zone
lateral
ski according
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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
EP94116597A
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English (en)
French (fr)
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EP0657192B1 (de
Inventor
Bertrand Krafft
Gilles Silva
Jacques Le Masson
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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Publication date
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Publication of EP0657192A1 publication Critical patent/EP0657192A1/de
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Publication of EP0657192B1 publication Critical patent/EP0657192B1/de
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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
    • A63C5/044—Structure of the surface thereof of the running sole

Definitions

  • the invention relates to a ski for evolution on snow, such as an alpine ski, a monoski or a snowboard.
  • the sole is provided in its central part with a multitude of parallel and rectilinear grooves which extend continuously over approximately a third of the length and over the entire width of the sliding surface.
  • the sliding surface is provided with discontinuous ridges oriented in the longitudinal direction, the shape of which is wavy, of generally sinusoidal appearance, so as to preferably give the sole a coefficient of roughness Ra within an appropriate value range.
  • the central region of the sole plays an important role in the flat gliding of the ski, it is therefore important that it is strongly structured in order to allow good flow and avoid the phenomenon of suction.
  • the invention therefore aims to provide a ski for evolution on snow comprising a lower surface of variable width (L) in plastic material, provided with a plurality of discontinuous ridges and two lateral edges which laterally border said surface; which rests on a front contact line and a rear contact line when the ski is unloaded.
  • L variable width
  • the lower surface comprises a central flat sliding zone extending between the two contact lines, and on at least one side, a lateral curved sliding zone bordering said central zone between the two contact lines, the width ( l1) is greater than 0.03 L; the surface of the rear part at least, of said central zone, lying between the rear contact line and the mid-line of the ski boot, being provided with a marked structure such that the measured values of the significant roughness parameters Rtm and Rku are greater than the values measured on the surface of said lateral sliding curve area.
  • the lower surface comprises two symmetrical lateral zones with respect to the longitudinal axis of the ski, bordering on both sides the central zone.
  • the parameters Rtm and Rku selected are those among the roughness parameters which make it possible to best appreciate on a surface the difference between a strong or marked structure effective for breaking and evacuating the film of water according to the invention and a finer structure. or less marked limiting friction with snow when cornering.
  • the Rtm parameter designates the average of the maximum roughnesses which measure the vertical difference between the highest point and the lowest point of the roughness profile over the total evaluation length, according to DIN 4762 / 1E or ISO 4287 / 1.
  • the Rku (Roughness Kurtosis) parameter designates the flattening parameter of the height distribution density. The flatter the density curve, the larger Rku; on the contrary, if the curve is sharp and its maximum well centered, Rku is low (Standard ISO 4287/1).
  • the Rtm value is less than or equal to 15 ⁇ m and the Rku value is less than or equal to 3 in the surface of said lateral zone (s), while Rtm> 15 ⁇ m and Rku> 3 in the rear part, at least, of the central zone as defined above.
  • the width (l1) of the lateral zone (s) is between 0.03 L and 0.3 L, knowing that the width (l2) of the central sliding zone at dish must remain greater than or equal to 0.45 L.
  • the width (l1) of the lateral zone (s) increases from the vicinity of the line of width of the minimum lower surface (L min), in the direction of the contact lines.
  • the width (11) is greater than or equal to 2 mm in the vicinity of the line of width of the lower surface (L min) and is greater than or equal to 10 mm in the vicinity of the contact lines of the ski.
  • the width (l2) of the strongly striated central zone is constant.
  • the structuring of the central zone is carried out by passing over the sole, hot and under pressure, a tool in the form of a roll comprising a relief pattern with constant width (l) of edges on the surface of which is formed a plurality of discontinuous ribs.
  • the width (l1) of the lateral zone (s) is constant and the width (l2) of the central flat gliding zone gradually increases starting from the vicinity of the minimum width ( L min) towards the contact lines.
  • the width (l1) of the lateral zone (s) is greater than or equal to 6 mm.
  • the highly structured central zone comprises a plurality of short, rectilinear and discontinuous streaks, arranged in separate or nested rows.
  • a majority, at least, of the ridges are oriented along the longitudinal axis of the ski. Some may, however, be inclined and present a certain angle relative to the longitudinal axis, in order to in particular to avoid an effect of too great 'rail' or to improve the release of the water film in certain snow conditions or for certain types of skis.
  • the structuring has a roughness gradient such that the measured parameters Rtm and Rku gradually increase from the edge towards the longitudinal axis over a significant part, at least, of the width of the lower surface, it being understood that the roughness (Rtm and Rku) can remain substantially constant over small portions of width. This may be the case, for example, by providing for a gradual increase in the density of streaks, an increase in certain parameters of the streaks (depth, width, length, shape, etc.).
  • the structuring along the longitudinal axis has a roughness gradient such that the measured parameters Rtm and Rku vary gradually, from the rear contact line towards the front contact line , over at least a substantial part of the length of the ski; it being understood that the roughness can remain substantially constant over certain portions of length.
  • FIG. 1 it is an alpine type ski in view from below, where there are the lower surface or gliding sole (1) made of polyethylene, the side edges (2) , the spatula (3) and the heel (4).
  • the sole is arched and rests on a front contact line (10) and a rear contact line (11) when the ski is unloaded.
  • a front contact line (10) and a rear contact line (11) When the ski is unloaded.
  • the surface between these two contact lines (10, 11) meets the snow and becomes the so-called "bearing" surface of the ski.
  • FIG. 1a shows, in enlarged view, an example of significant structuring according to the invention. It can be a multitude of short straight ridges (50), discontinuous and arranged in rows nested one inside the other.
  • the bearing surface comprises on either side of the central zone (5), two lateral zones (6, 7) of sliding in a curve, of width (11). These zones have a less marked structure in which the striations (70) are more spaced, shorter, shallower and narrower, for example, than those of the central zone (FIG. 1b). The structure could also be almost non-existent and the surface as smooth as possible.
  • FIG. 2 shows the ski when a turn is engaged and its inclination relative to the surface of the terrain. Part of the sole penetrates more or less deeply into snow or ice, depending on the conditions, thanks to the cut exerted by the edge (2).
  • the utility of reserving an area (7) of length (11) of the bearing surface having minimum friction with the snow is understood; the central zone (5) of length (l2) being almost never in contact with the snow during the turn.
  • the width (L) of the sole varies to follow the coast line of the ski.
  • the width (l1) is always greater than 0.03 L, at any point of width (L) of the sole, measured between the contact lines (10, 11).
  • (l1) is between 0.03 L and 0.3 L, knowing that (l2) must remain greater than or equal to 0.45 L.
  • (l1) may be between 3 mm and 25 mm, approximately and (l2) is greater than 27 mm.
  • (l2) is constant between the contact lines (10,11) and thus (l1) varies gradually.
  • the width (l1) of each lateral zone (6, 7) gradually increases towards the lines of contact (10,11).
  • FIGS. 3 and 4 illustrate an advantageous example allowing the structuring of the sole of a ski according to the invention and more particularly in the case where it is desired to obtain a constant width (12) of the central zone (5) of the lower surface giving a variable width (11) of the lateral zones (6, 7).
  • a device comprising a heated tool (8) having the shape of a roller and which has on its surface an embossed pattern with constant width (l) of edges, comprising a plurality of discontinuous ribs (80).
  • the surface of the roller is applied, under pressure, against the surface of the sole (1) of the ski to be prepared by operating the ski in longitudinal travel between several guide pads (9).
  • pressure and temperature conditions are adapted without particular difficulties, in order to obtain satisfactory and reproducible results.
  • a HDPE type sole and in the case of the production of ridges according to the characteristics given above by way of example, it is preferable to work at a temperature of between 80 and 120 ° C., and apply pressure to the surface of the sole by the rotating tool (8).
  • FIG. 5 shows a variant of the invention in which the width (11) of the lateral zones of sliding in a curve is constant along the ski. Therefore, because of the side line of the ski which gives the lower surface a variable width (L) in the form of a "wasp size", the width (l2) of the central zone of gliding flat is also variable along the ski and increases from the vicinity of the width line (L min) towards the contact lines (10, 11) of the ski.
  • FIG. 6 only the rear part of the central zone (5), lying between the rear contact line (11) and the shoe middle line (12) is provided with ridges.
  • the shoe center line (12) is a line given by each manufacturer and its position relative to the ski environment can vary from one type of ski to another.
  • the front part between the front contact line (10) and the shoe middle line (12) is slightly or not striated so that the roughness parameters Rtm, Rku defined in the front part are close to the values or equal to the respective values of the lateral zones (6, 7) of sliding in curve. Tests carried out by the applicant have demonstrated that such a configuration can prove to be more efficient in certain snow conditions.
  • the structure of the central zone (5) has a roughness gradient such that the measured parameters Rtm and Rku decrease progressively, from the rear contact line (11) in the direction of the line of front contact (10).
  • This gradient can be obtained for example by gradually decreasing the number of streaks and their dimension (length, width and depth) from the rear line (11) to the front line (10).
  • the values Rtm and Rku can be substantially constant in the central zone (5).
  • the decreasing progression of the values Rtm and Rku takes place in stages, that is to say by a series of adjacent short portions in which the values Rtm and Rku are substantially constant but vary by a portion adjacent to each other.
  • the length of the ridges can vary, in general, between 4 mm and 50 mm depending on the type of snow and the type of ski used.
EP94116597A 1993-12-09 1994-10-21 Ski mit angepasster Strukturierung abhängig von der Lage der Gleitfläche Expired - Lifetime EP0657192B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315020 1993-12-09
FR9315020A FR2713497B1 (fr) 1993-12-09 1993-12-09 Ski comprenant une structuration adaptée en fonction des zones de glisse en courbe et de la zone de glisse à plat repérable sur ledit ski.

Publications (2)

Publication Number Publication Date
EP0657192A1 true EP0657192A1 (de) 1995-06-14
EP0657192B1 EP0657192B1 (de) 1998-05-13

Family

ID=9453922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116597A Expired - Lifetime EP0657192B1 (de) 1993-12-09 1994-10-21 Ski mit angepasster Strukturierung abhängig von der Lage der Gleitfläche

Country Status (6)

Country Link
US (1) US5727807A (de)
EP (1) EP0657192B1 (de)
JP (2) JPH07194761A (de)
AT (1) ATE165987T1 (de)
DE (1) DE69410221T2 (de)
FR (1) FR2713497B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016090502A1 (de) * 2014-12-09 2016-06-16 Robert Ruoss Schneegleitelement

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2611134B2 (ja) * 1993-11-16 1997-05-21 川崎重工業株式会社 エンジンの吸気装置
NO940482D0 (no) * 1994-02-11 1994-02-11 Joergen Karlsen Alpin parski
US6663137B2 (en) 1998-03-10 2003-12-16 Karlsen Joergen Snowboard
FR2800622B1 (fr) * 1999-11-05 2002-02-08 Salomon Sa Planche de glisse destinee a la pratique du surf sur neige
US20030127812A1 (en) * 2002-01-04 2003-07-10 Charles Mehrmann Bi-directional sliding board
AT410900B (de) * 2002-01-22 2003-08-25 Fischer Gmbh Verfahren zur herstellung einer strukturierten lauffläche für gleiteinrichtungen sowie eine nach diesem verfahren hergestellte strukturierte lauffläche
FR2845611B1 (fr) * 2002-10-15 2004-12-03 Rossignol Sa Planche de glisse sur neige a spatule et a releve de talon ameliores
US6857653B2 (en) 2002-10-31 2005-02-22 Anton F. Wilson Gliding skis
AT500213B1 (de) * 2003-04-23 2007-09-15 Atomic Austria Gmbh Schi
US7073810B2 (en) * 2003-06-25 2006-07-11 Wilson Anton F Ski with tunnel and enhanced edges
US20050280230A1 (en) * 2004-06-18 2005-12-22 Chorng-Jiang Lin Anti-slip surface for skateboards
AT502718B1 (de) * 2006-03-23 2007-05-15 Fischer Gmbh Ski
FR2926735B1 (fr) * 2008-01-25 2010-03-26 Salomon Sa Ski alpin avec moyens de reglage
US8061731B2 (en) * 2009-01-05 2011-11-22 Michael John Popenas Ski brake
AT514124A1 (de) * 2013-03-22 2014-10-15 Fischer Sports Gmbh Aufstiegshilfe für einen Ski sowie Verfahren zur Herstellung
AT514968B1 (de) * 2013-10-22 2017-11-15 Fischer Sports Gmbh Lauffläche für einen Ski
US11065528B2 (en) * 2018-09-18 2021-07-20 Stephen S. Daniell Thrust-responsive surface material for skis
WO2023022114A1 (ja) * 2021-08-18 2023-02-23 株式会社フジミインコーポレーテッド 滑走用具及びその製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961335C (de) * 1953-12-12 1957-04-04 Franz Kneissl Ski
CH331559A (fr) * 1956-05-16 1958-07-31 Ray Gisele Ski
CH670571A5 (en) * 1985-04-30 1989-06-30 Blizzard Gmbh Facing esp. for langlauf ski
FR2643565A1 (fr) * 1989-02-24 1990-08-31 Grand Chavin Skis Ski de fond

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH161592A (de) * 1931-12-31 1933-05-15 Wolfinger Josef Ski und Verfahren zu seiner Herstellung.
FR934319A (fr) * 1946-09-24 1948-05-19 Perfectionnements aux skis et analogues
DE2623852A1 (de) * 1975-06-17 1976-12-23 Fischer Gmbh Ski
DE2621490A1 (de) * 1976-05-14 1977-12-01 Voelkl Ohg Franz Ski
SE7806170L (sv) * 1977-06-10 1978-12-11 Norsk Skiforsk Vallningsfritt skidbelag av plast samt sett for dess framstellning
AT355467B (de) * 1977-09-26 1980-03-10 Kuntara Wilhelm Dr Ski, insbesondere langlauf- oder loipenski
US4406478A (en) * 1978-07-20 1983-09-27 Fischer Gesellschaft M.B.H. Process and apparatus for forming a profiled tread surface on a ski
DE8515091U1 (de) * 1984-05-25 1986-02-27 Blizzard GmbH, Mittersill, Salzburg Ski, insbes. Langlaufski, mit einem Laufflächenbelag
AT398038B (de) * 1989-11-02 1994-08-25 Fischer Gmbh Ski
FR2683730B1 (fr) * 1991-11-19 1995-03-31 Rossignol Sa Ski, ou autre engin ou planche de glisse sur neige, a semelle striee.
US5344177A (en) * 1992-04-28 1994-09-06 Minnesota Mining And Manufacturing Company Ski base and running surface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961335C (de) * 1953-12-12 1957-04-04 Franz Kneissl Ski
CH331559A (fr) * 1956-05-16 1958-07-31 Ray Gisele Ski
CH670571A5 (en) * 1985-04-30 1989-06-30 Blizzard Gmbh Facing esp. for langlauf ski
FR2643565A1 (fr) * 1989-02-24 1990-08-31 Grand Chavin Skis Ski de fond

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016090502A1 (de) * 2014-12-09 2016-06-16 Robert Ruoss Schneegleitelement

Also Published As

Publication number Publication date
JPH07194761A (ja) 1995-08-01
DE69410221T2 (de) 1998-11-12
DE69410221D1 (de) 1998-06-18
FR2713497A1 (fr) 1995-06-16
JP3037260U (ja) 1997-05-16
EP0657192B1 (de) 1998-05-13
FR2713497B1 (fr) 1996-02-02
US5727807A (en) 1998-03-17
ATE165987T1 (de) 1998-05-15

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