EP0320487A1 - Ski - Google Patents

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Publication number
EP0320487A1
EP0320487A1 EP88890307A EP88890307A EP0320487A1 EP 0320487 A1 EP0320487 A1 EP 0320487A1 EP 88890307 A EP88890307 A EP 88890307A EP 88890307 A EP88890307 A EP 88890307A EP 0320487 A1 EP0320487 A1 EP 0320487A1
Authority
EP
European Patent Office
Prior art keywords
profiles
ski
profile
legs
core
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.)
Withdrawn
Application number
EP88890307A
Other languages
German (de)
English (en)
French (fr)
Inventor
Bernhard Dr. Mayr
Heinz Lampl
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.)
Head Sportgerate and Co oHG GmbH
Original Assignee
Head Sportgerate and Co oHG GmbH
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
Application filed by Head Sportgerate and Co oHG GmbH filed Critical Head Sportgerate and Co oHG GmbH
Publication of EP0320487A1 publication Critical patent/EP0320487A1/de
Withdrawn legal-status Critical Current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
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials

Definitions

  • the invention relates to a ski with a tread, side cheeks, a core and a surface, in which ski the core is at least partially made of angled profiles with areas parallel to the tread and to these areas essentially normal webs or legs made of plastic or aluminum, in particular fiber-reinforced plastic, the profiles between adjacent, essentially normal to the tread webs or legs delimit cavities.
  • cores which are composed of essentially upright profile strips. It is also known to design such strips with an essentially parallelogram-shaped cross section and in this way to connect slanted strips lying side by side to form a core. In order to achieve the desired elasticity and strength properties, a number of complicated measures have been proposed in this context and it is known to combine such strips made of different materials with one another in order to ensure both the requirements for elasticity and strength.
  • skis For the production of skis, it is also known to form cores at least partially from angled profiles with areas parallel to the tread and on these areas essentially normal webs or legs made of fiber-reinforced plastic, cavities formed between adjacent webs or legs being filled with a filling material and the shape of the ski core is subsequently cut out of the body formed by such a filled profile.
  • a disadvantage of such an embodiment is that, by cutting out the ski shape, the sides consist of filler material surfaces or surfaces can be formed, the strength and elasticity properties of which do not take sufficient account of the requirements.
  • a hollow plastic ski with an upper and a lower plate has become known from AT-PS 309 282, these plates having webs which run laterally offset from one another in the longitudinal direction of the ski and the plates on the flanks of their webs in the manner of a tongue and groove connection are glued together to form the ski.
  • DE-OS 23 32 909 discloses a hollow ski in which a cover plate of the ski provided with webs is connected to a second core part provided with leg parts for forming the side cheeks, the leg parts being reinforced with glass fibers on the core parts. After the two core parts have been joined together, a box-shaped hollow structure of a ski results overall.
  • a disadvantage of these known designs is that the dimensions of the core parts used have to be precisely matched to one another, and adaptation to the required strength and elasticity properties can only be achieved by changing the dimensions or the nature of the core parts and thus a large number of different core part shapes must be manufactured for different properties as well as sizes.
  • the invention now aims to provide a particularly light core construction in which high strength and good elastic properties can be achieved despite the low weight. Furthermore, the invention aims to provide such a design in which, despite the lightweight construction, the flexibility or elasticity properties can be adapted to the needs in a simple manner, the required strength properties, in particular the required torsional rigidity, being satisfied in all cases.
  • This object essentially consists of the fact that the core has two profiles extending in the longitudinal direction, that the angled profiles are at least partially overlapping one another and that the leg that is adjacent to the center of the ski and is essentially normal to the tread by a measure is shortened, which corresponds to the wall thickness of the profile.
  • the shortened design of the bridge which is adjacent to the center of the ski and essentially normal to the tread, ensures that the torsion box formed by the nested profiles has a constant height over the entire width. Since the ridges, which are adjacent to the center of the ski, essentially normal to the tread, each engage in a cavity of the other profile part limited between two ridges, it becomes possible to determine the width of the ski to a certain extent by appropriately positioning such a bridge in the adjacent cavity of the adjacent profile part Limits to vary.
  • a ski can be formed by two symmetrically designed profiles, which for assembling the ski depending on the outer contour either by rotation through 180 ° in one plane or by rotation through 180 ° around an axis running in the longitudinal direction of the ski staggered to form a torsion box.
  • the procedure according to the invention is such that at least three profiles are provided, which are partially nested, overlapping one another, and that the middle profile between essentially vertical legs delimits an odd number of cavities, either the each outer leg of the middle profile are shorter than the profile height of the adjacent profiles or the lateral Profiles in the areas overlapping the central profile have correspondingly shortened legs and the shortening has the dimension that corresponds to the wall thickness of the adjacent profile.
  • a standardized central profile part can be used, while the outer profile parts are designed according to the dimensions of the ski to be manufactured. With such a design, the needs with regard to flexibility or elasticity properties can be taken into account in a simple manner by designing the profiles of the individual core parts differently.
  • the webs or legs are shortened in the overlapping areas according to the wall thickness of the profile.
  • a single profile can again be used as the outer core part, which is used to form the ski either in the ski plane or offset by 180 ° to one another in the longitudinal direction of the ski during the manufacture of the ski finds.
  • the middle core part can also delimit an even number of cavities, in which case a single profile can be used to form the two outer core parts when the ski is designed with side edges that are essentially normal to the treads, which profile as described above must be staggered.
  • Such an arrangement of the angled, partially overlapping, nested profiles allows the bending stiffness or torsional stiffness to be significantly improved with a light construction, and this results in nested torsion box constructions.
  • the profiles are made of fiber-reinforced plastic or aluminum, simple and inexpensive profiles can be used, the material properties of which can be adapted within wide limits to the required flexibility or elasticity properties, different ski widths being able to be achieved with essentially the same components and due to the extent of the overlap Different elasticity and strength properties can be realized with the same components.
  • the procedure is preferably such that the middle core part is essentially U-shaped and the legs of the U-shaped part are shorter than the profile height of the adjacent profiles, the required position being correspondingly positioned in the middle core part Needs can be taken into account.
  • the materials used for the fiber-reinforced plastics are customary glass-fiber or carbon-fiber-reinforced plastics, the material properties being able to be set within wide limits by choosing the fiber reinforcement.
  • unreinforced plastics e.g. Thermoplastics or thermosets or aluminum profiles with variable wall thicknesses can be used for adjustment or rigidity.
  • FIG. 1 shows a section through a ski according to the invention
  • 2 shows a perspective view of the ski according to FIG. 1
  • FIG. 3 shows a modified embodiment of a ski according to the invention.
  • the ski 1 shown in FIG. 1 has an upper flange 2, a lower flange 3 and a tread 4, to which edges 5 connect flush. Between the upper flange 2 and the lower flange 3 or the tread 4 extend side cheeks 6 which, in the illustration according to FIG. 1, enclose an angle with the tread 4 which deviates from the normal. Naturally, the side cheeks 6 can be formed normally on the tread 4.
  • the ski core located between the upper chord 2 and the lower chord 3 or the running surface 4 is formed by profiles 7, 8 and 9 which are angled and partially overlapped with one another.
  • the central core part 8 delimits an odd number of cavities 12 between its essentially vertical webs 10 and 11, the respective outer vertical webs or legs 11 of the central core part 8 being shorter than the profile height of the adjacent webs 10 by when assembled with the outer profile parts 7 and 9 to give a constant height over the entire cross section.
  • Essentially vertical webs 13 of the outer core parts 7 and 9 engage in the respective outer cavities 12 of the central core part 8, which in turn are shorter than the adjacent webs 14.
  • the webs 15 adjacent to the side cheeks, like the side cheeks 6, enclose an angle with the tread 4 that deviates from the normal.
  • the ski core is formed by two longitudinally extending profile parts 16 and 17, the web 18 adjacent to the ski center and essentially normal to the tread being correspondingly shortened compared to the other webs 19, the shortening of the Wall thickness of the profile corresponds to give a constant height over the entire cross section.
  • the width of the entire ski can be varied by arranging the respective webs 18 adjacent to the center of the ski in the corresponding cavity 20 of the other profile part.
  • the elasticity and strength property can be easily adapted to the requirements by a suitable choice of the distance between adjacent webs or legs of the respective profile parts which are essentially normal to the longitudinal direction of the ski.

Landscapes

  • Tires In General (AREA)
  • Laminated Bodies (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP88890307A 1987-12-09 1988-12-02 Ski Withdrawn EP0320487A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0323987A AT390197B (de) 1987-12-09 1987-12-09 Ski
AT3239/87 1987-12-09

Publications (1)

Publication Number Publication Date
EP0320487A1 true EP0320487A1 (de) 1989-06-14

Family

ID=3547525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88890307A Withdrawn EP0320487A1 (de) 1987-12-09 1988-12-02 Ski

Country Status (4)

Country Link
US (1) US4928989A (ja)
EP (1) EP0320487A1 (ja)
JP (1) JPH01288285A (ja)
AT (1) AT390197B (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5848800A (en) * 1993-06-09 1998-12-15 Kastle Aktiengesellschaft Ski
AT405022B (de) * 1992-03-23 1999-04-26 Wolfgang Lehner Ski
WO2003008052A1 (de) * 2001-07-10 2003-01-30 Fischer Gesellschaft M.B.H. Leichtbaukern und verfahren zur herstellung desselben
US7077418B2 (en) 2001-07-10 2006-07-18 Fischer Gesellschaft M.B.H. Light-weight construction core and a method for producing the same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398041B (de) * 1990-02-09 1994-08-25 Head Sport Ag Kunststoff-schalenski
US5921564A (en) * 1997-04-22 1999-07-13 Csoc Holdings, Inc. Snow board
JPH119757A (ja) * 1997-06-20 1999-01-19 Fuji Heavy Ind Ltd 滑走板
US7823892B2 (en) * 2007-05-04 2010-11-02 Quiksilver, Inc. Snowboard
DE102017125770A1 (de) * 2016-12-29 2018-07-05 Völkl Sports GmbH & Co. KG Untergurt mit Klammereffekt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2119862A1 (de) * 1971-04-23 1973-01-18 Werner Langfeldt Ski
AT309282B (de) * 1970-03-02 1973-08-10 Head Sportgeraete Gmbh Kunststoffski
DE2406145A1 (de) * 1973-02-07 1974-08-15 Nippon Musical Instruments Mfg Ski
FR2599265A1 (fr) * 1986-05-27 1987-12-04 Rohrmoser Alois Skifabrik Element de construction pour la fabrication d'un ski.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA734828A (en) * 1966-05-24 Langendorf Frederic Laminated ski
FR1380663A (fr) * 1963-10-21 1964-12-04 Ski
DE1961487A1 (de) * 1968-02-11 1970-07-09 Semperit Ag Mehrschichtenski und Verfahren zu seiner Herstellung
CH574252A5 (ja) * 1972-06-29 1976-04-15 Nippon Musical Instruments Mfg
US3861699A (en) * 1973-07-30 1975-01-21 Molnar & Co Inc Ski construction
FR2278365A1 (fr) * 1974-06-17 1976-02-13 Dynamic Ski a structure alveolaire semi-tubulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT309282B (de) * 1970-03-02 1973-08-10 Head Sportgeraete Gmbh Kunststoffski
DE2119862A1 (de) * 1971-04-23 1973-01-18 Werner Langfeldt Ski
DE2406145A1 (de) * 1973-02-07 1974-08-15 Nippon Musical Instruments Mfg Ski
FR2599265A1 (fr) * 1986-05-27 1987-12-04 Rohrmoser Alois Skifabrik Element de construction pour la fabrication d'un ski.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405022B (de) * 1992-03-23 1999-04-26 Wolfgang Lehner Ski
US5848800A (en) * 1993-06-09 1998-12-15 Kastle Aktiengesellschaft Ski
WO2003008052A1 (de) * 2001-07-10 2003-01-30 Fischer Gesellschaft M.B.H. Leichtbaukern und verfahren zur herstellung desselben
US7077418B2 (en) 2001-07-10 2006-07-18 Fischer Gesellschaft M.B.H. Light-weight construction core and a method for producing the same

Also Published As

Publication number Publication date
ATA323987A (de) 1989-09-15
AT390197B (de) 1990-03-26
US4928989A (en) 1990-05-29
JPH01288285A (ja) 1989-11-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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