EP0169380B1 - Laufflächenausbildung für Ski - Google Patents

Laufflächenausbildung für Ski Download PDF

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Publication number
EP0169380B1
EP0169380B1 EP85107692A EP85107692A EP0169380B1 EP 0169380 B1 EP0169380 B1 EP 0169380B1 EP 85107692 A EP85107692 A EP 85107692A EP 85107692 A EP85107692 A EP 85107692A EP 0169380 B1 EP0169380 B1 EP 0169380B1
Authority
EP
European Patent Office
Prior art keywords
ski
snow
climbing
edge sections
edge
Prior art date
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.)
Expired
Application number
EP85107692A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0169380A1 (de
Inventor
Matthias Dr. Rer. Nat. Gratz
Gerald Dipl.-Phys. Stadler
Hans-Dieter Dr.-Ing. Schmalz
Lothar Dipl.-Wirt. Hildenbrandt
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.)
Veb Kombinat Sportgerate Schmalkalden
Original Assignee
Veb Kombinat Sportgerate Schmalkalden
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=5559068&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0169380(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Veb Kombinat Sportgerate Schmalkalden filed Critical Veb Kombinat Sportgerate Schmalkalden
Priority to AT85107692T priority Critical patent/ATE48765T1/de
Publication of EP0169380A1 publication Critical patent/EP0169380A1/de
Application granted granted Critical
Publication of EP0169380B1 publication Critical patent/EP0169380B1/de
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/06—Tooth-shaped running sole-plates
    • 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
    • A63C5/0428—Other in-relief running soles

Definitions

  • the invention relates to a tread for skis, especially for cross-country skis, of the type specified in the preamble of claim 1.
  • EP-A-15447 and DE-U-8004825 describe tread profiles for skis in which the height of the elevations in the tread area is greater than in the other areas.
  • the climbing ability depends only insignificantly on the step height, but is mainly determined by the force exerted on the snow surface at which the upper layer of snow shears off, the climbing effect of the skis equipped with such tread profiles is inadequate in certain types of snow.
  • the treads described in DE-A-2 627 887 and DE-A-2 852 513 have profiles only on the inside of the ski, while the outside of the ski is flat and smooth. A reasonably satisfactory climbing effect can only be achieved by a special running style and by applying wax to the smooth surface in the middle area.
  • the profile is in the form of grooves parallel to the longitudinal edges of the ski.
  • whistling tones are often perceived as unpleasant, which in turn suggests increased friction losses and thus less good gliding properties.
  • a tread for cross-country skis is known, in which to suppress whistling noises arranged in rows and rising towards the end of the ski from the base are unevenly distributed over the tread.
  • all snow attack lines lying perpendicular to the running direction lie in the sliding plane of the surface and all projections have the same height
  • all snow attack edges with hard and soft snow have the same penetration force on the projections or their snow attack edges, the size of which depends on the pressure distribution over the tread and depends on the respective length of the snow attack edges.
  • the penetration force acting on each snow attack edge at a given pressure distribution over the tread must be so great that the respective snow attack edge penetrates completely or partially into the snow surface, the sinking depth depending on the respective type of snow.
  • profiled treads for sliding and climbing skis of the specified type consist of rows of teeth running transversely to the longitudinal axis of the ski, which are arranged in a suitable grouping over the length of the ski and by more or less long flat sliding surfaces are separated from each other.
  • Each tooth consists of a sliding surface facing the snow surface, which is formed from an inclined or arcuate part and a flat part, which is followed by a vertical rising edge. Due to the continuous rear rising edges, the lateral guidance of the cross-country skis profiled in this way is insufficient. Furthermore, the sliding behavior of the skis is impaired by the same design and symmetrical arrangement of the teeth, because the snow which has penetrated into the respective tooth gaps must be pressed down in its entirety by the next tooth.
  • tread patterns are mainly due to the fact that they meet the special requirements of the different types of snow, the different loads on the ski in the push-off and sliding phase, as well as the processes during the sticking or sliding of the profiling and in the transition phases from sticking / sliding / sticking do not take sufficient account.
  • the object of the invention is to provide a running surface for cross-country skis in particular, the profiling of which corresponds to the requirements of different types of snow, the special loads on the ski during the push-off and sliding phase, and the processes directly associated therewith the static and sliding friction in the transition phases is such that excellent sliding, climbing and guiding properties of the ski are achieved.
  • the rising edges arranged perpendicular to the running direction ensure optimal climbing ability and the connecting edges running parallel to the running direction between the rising edge sections result in an effective lateral guidance of the ski.
  • the different heights of the rising edge sections result in a full power transmission in soft and in stuck snow, with an increased resistance to shear forces being achieved due to a targeted compression of the upper snow layer. Since only the rear rising edge sections lie in the contact plane of the tread and the front rising edge sections do not touch this contact surface, in the case of relatively hard stuck snow, the rear edge sections are preferably pressed into the snow cover with a relatively high pressing force to a minimum penetration depth, from which the shear forces of the uppermost snow layer remain constant stay.
  • the profile sinks deeper, which also pushes the front riser edge sections into the snow, thereby increasing the climbing effect. Since a periodic sinking of the teeth into the snow bed of a previous profiling and the subsequent lifting of the ski is avoided by the claimed arrangement of the profile elements, there is a substantially reduced sliding resistance.
  • the spacing of the rows of teeth in the longitudinal direction of the ski and the mean lengths of the rear rising edge sections in the repelling area of the ski located below the binding are reduced, which leads to a substantial improvement in the climbing effect, particularly in the case of hard snow. Because of the tension in the skis, there is excellent sliding behavior even with such a profile arrangement, since the push-off area of the ski, which is only slightly loaded during gliding, lifts.
  • the average edge length of the rear rising edge sections in the area of the inside edge of the ski can be the smallest and increase in the direction of the outside edge of the ski, which results in a further optimization of climbing and gliding properties, since the inside area of the ski is generally subjected to more stress when pushing off or climbing up Ski outside area.
  • the superimposition of the effects of all claimed features results in an optimal tread pattern with regard to climbing, sliding and guiding properties.
  • a tooth-shaped or step-shaped profile is provided in the central region S of a tread, to which a smooth outsole section adjoins in the direction of the ski tip and ski end.
  • Polyethylene is preferably used as the material for the sliding coating.
  • the tooth-shaped profile elements have a sliding surface that rises backwards up to a rear rising edge section K, which is curved in accordance with FIG. 3 such that a large surface of the profile elements comes into contact with the snow surface and the sliding resistance is thus kept low during the sliding phase , because the ski sinks only slightly into the snow surface.
  • straight rising edge sections K, and K 2 perpendicular to the running direction result in the best climbing properties, which are also determined by the total length of the rising edges sinking into the snow surface.
  • the front and rear rising edge sections K 2 and K are connected to one another by edge sections K 3 , which run parallel to the longitudinal axis of the ski and secure the lateral guidance of the ski.
  • This formation of straight edge sections K 1 ' K 2 and K 3 perpendicular and parallel to the running direction means that when pushing off no force components are generated obliquely to the running direction and the power absorption of the snow in the pushing direction is used to the maximum.
  • the force absorption capacity is to be understood as the force acting parallel to the snow surface at which the top layer of snow is sheared off. If the force exerted by the runner on the snow surface when pushing off in the profile area is greater than the snow's ability to absorb force, the upper layer of snow is sheared off and the ski slides back when pushed off.
  • the rising edge sections K, and K 2 oriented perpendicular to the running direction have different heights H 1 and H 2 , the front rising edge sections K 2 being slightly set back compared to the rear rising edge sections K 1 .
  • the profile elements sink slightly into a hard snow surface, only the projecting rear rising edge sections K 1 are preferred.
  • the profile elements sink deeper and the rising edge sections K and K 2 come into effect together.
  • the reduced force absorption capacity of soft snow due to the additionally acting rising edge sections K 2 is supplemented, so that there are roughly equivalent climbing properties of the ski for different types of snow (hard or soft snow).
  • the distances between the tooth-shaped profile series within the maximum fluctuation range A a n max can vary statistically with ⁇ ⁇ a n .
  • the total distance from row to row therefore has the value at ⁇ ⁇ a n .
  • the statistical distribution of the mean edge lengths b n of the rising edge sections K 1 can be realized in the same way.
  • the individual length of the rising edge sections K 1 perpendicular to the running direction then has the value b n ⁇ ⁇ b n corresponding to FIG. 2.
  • the mean edge length remains in the exemplary embodiment according to FIG. 2 b n over the entire profiling area S and the ski width J (FIG. 1), a statistical distribution of the edge lengths b n being provided in this exemplary embodiment.
  • This statistical distribution of the individual tread elements on the tread significantly reduces the sliding resistance, since a pattern pressed into the snow does not again coincide with the pattern of other tread elements in the sliding phase.
  • the medium edge lengths can be used to specifically change the climbing properties b n of the rear rising edge sections K 1 can be varied depending on the length of the profiling area S (FIG. 1). 5 to 7 are three different possible variations of the mean edge lengths b n graphically represented, with the average edge length in each of these figures b n is plotted over the ski length L. In accordance with Fig. 1, S means the length of the profiling area.
  • the average edge length b n increases uniformly starting from the center of the profiling area S in the direction of the ski tip and the ski end, the statistical distribution of the profile elements being realized in the manner described above.
  • the mean edge length b n is in the relatively short push-off area A, in which the center of gravity SW of the ski lies (cf. FIG. 1), and decreases in the one that adjoins forwards and backwards Zones B, B 'and C, C' gradually.
  • 7 is the mean edge length b n in the two transition areas C ', C larger than in the middle intermediate area.
  • the distribution of the average edge lengths shown in FIGS. 5 to 7 can be used b n are provided in the direction of the inside of the ski, the mean edge lengths b n Do not change in the direction of the outside of the ski in the profile area S.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Road Paving Structures (AREA)
  • Lubricants (AREA)
  • Laminated Bodies (AREA)
  • Golf Clubs (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Polarising Elements (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Processing Of Meat And Fish (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Processing Of Solid Wastes (AREA)
  • Tires In General (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Soft Magnetic Materials (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
EP85107692A 1984-07-24 1985-06-21 Laufflächenausbildung für Ski Expired EP0169380B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107692T ATE48765T1 (de) 1984-07-24 1985-06-21 Laufflaechenausbildung fuer ski.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD265569 1984-07-24
DD84265569A DD244254A3 (de) 1984-07-24 1984-07-24 Laufflaechenausbildung fuer ski

Publications (2)

Publication Number Publication Date
EP0169380A1 EP0169380A1 (de) 1986-01-29
EP0169380B1 true EP0169380B1 (de) 1989-12-20

Family

ID=5559068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107692A Expired EP0169380B1 (de) 1984-07-24 1985-06-21 Laufflächenausbildung für Ski

Country Status (14)

Country Link
US (1) US4705290A (fi)
EP (1) EP0169380B1 (fi)
JP (1) JPS6192682A (fi)
AT (1) ATE48765T1 (fi)
BG (1) BG48348A1 (fi)
CS (1) CS260994B1 (fi)
DD (1) DD244254A3 (fi)
DE (1) DE3574826D1 (fi)
DK (1) DK286485A (fi)
FI (1) FI83040C (fi)
NO (1) NO159638C (fi)
PL (1) PL145625B1 (fi)
SU (1) SU1584973A1 (fi)
YU (1) YU120285A (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509370B1 (de) * 2010-02-05 2012-07-15 Atomic Austria Gmbh Laufflächenbelag für einen langlaufschi oder gattungsähnlichen schi sowie damit ausgestatteter langlaufschi oder gattungsähnlicher schi

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63188075U (fi) * 1987-05-26 1988-12-01
US6772542B2 (en) * 2000-10-12 2004-08-10 Jeffrey D. Jacobson Ski system
WO2009012072A1 (en) * 2007-07-16 2009-01-22 Cascade Alpine, Llc Multi-use snow tool
AT514124A1 (de) * 2013-03-22 2014-10-15 Fischer Sports Gmbh Aufstiegshilfe für einen Ski sowie Verfahren zur Herstellung
JPWO2023022114A1 (fi) * 2021-08-18 2023-02-23

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8004825U1 (de) * 1980-05-22 Blizzard Gmbh, Mittersill (Oesterreich) Laufsohle für Skier, insbesondere für Langlaufskier
CH162175A (de) * 1931-10-26 1933-06-15 Buchmann Hans Zusammenrollbarer Gleitschutzstreifen für Skier.
DE1954075A1 (de) * 1969-10-28 1971-05-06 Hoechst Ag Profilierte Laufflaechen fuer Gleit- und Steigskier
US3858894A (en) * 1971-09-02 1975-01-07 Skisearch Three-dimensional ski surface
AT326007B (de) * 1973-02-07 1975-11-25 Skisearch Ski
US4262925A (en) * 1975-12-29 1981-04-21 Jochen Plenk Kg Ski with non-symmetrical running surface
DE2627887A1 (de) * 1976-06-22 1977-12-29 Walter Dr Ing Kiefer Langlaufski
DE2755395A1 (de) * 1977-12-13 1979-06-21 Merx Euro Sport Langlaufski
AT364726B (de) * 1978-05-23 1981-11-10 Blizzard Gmbh Laufflaeche fuer langlaufski
DE2824714A1 (de) * 1978-06-06 1979-12-13 Benner Ski Kg Langlaufski
US4359077A (en) * 1978-07-20 1982-11-16 Fischer Gesellschaft M.B.H. Process and apparatus for forming a profiled tread surface on a ski
US4223909A (en) * 1979-03-01 1980-09-23 Trak Incorporated Ski with improved three-dimensional running surface
AT368012B (de) * 1980-10-02 1982-08-25 Staufer Adolf Dipl Ing Laufsohlenbelag fuer ski und verfahren zu seiner herstellung
JPS5976279U (ja) * 1982-12-17 1984-05-23 美津濃株式会社 スキ−

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509370B1 (de) * 2010-02-05 2012-07-15 Atomic Austria Gmbh Laufflächenbelag für einen langlaufschi oder gattungsähnlichen schi sowie damit ausgestatteter langlaufschi oder gattungsähnlicher schi

Also Published As

Publication number Publication date
NO852925L (no) 1986-01-27
DD244254A3 (de) 1987-04-01
US4705290A (en) 1987-11-10
FI852724L (fi) 1986-01-25
NO159638B (no) 1988-10-17
CS260994B1 (en) 1989-01-12
BG48348A1 (en) 1991-02-15
PL254553A1 (en) 1986-06-17
JPS6192682A (ja) 1986-05-10
JPH0338866B2 (fi) 1991-06-12
NO159638C (no) 1989-01-25
FI83040B (fi) 1991-02-15
SU1584973A1 (ru) 1990-08-15
ATE48765T1 (de) 1990-01-15
DK286485D0 (da) 1985-06-25
PL145625B1 (en) 1988-10-31
EP0169380A1 (de) 1986-01-29
FI852724A0 (fi) 1985-07-10
FI83040C (fi) 1991-05-27
DE3574826D1 (de) 1990-01-25
DK286485A (da) 1986-01-25
YU120285A (en) 1988-12-31

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