US3199882A - Manufacturing method for a ski and ski obtained by this method - Google Patents

Manufacturing method for a ski and ski obtained by this method Download PDF

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Publication number
US3199882A
US3199882A US264094A US26409463A US3199882A US 3199882 A US3199882 A US 3199882A US 264094 A US264094 A US 264094A US 26409463 A US26409463 A US 26409463A US 3199882 A US3199882 A US 3199882A
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United States
Prior art keywords
ski
synthetic material
zone
core
elements
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Expired - Lifetime
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US264094A
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English (en)
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Peillex Paul
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • 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
    • 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
    • A63C5/126—Structure of the core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres

Definitions

  • skis made by these methods are not completely satisfactory. In fact, certain of these skis are much too fragile and break easily, others are too flexible or lose very rapidly their elasticity, and this diminishes the quality of the resultant skis. In fact, the requirements now imposed, particularly with regard to skis for competitions, are very high and can practically no longer be met by the known manufacturing methods.
  • the present invention has for its object a ski which comprises in at least one part of its thickness a cellular zone constituted by elements made of a light material disposed side by side across the width of the ski and extending along at least one part of its length, embedded in a mass of reinforced synthetic material in order to provide a cellular zone in the longitudinal direction of the ski.
  • the annexed drawing illustrates schematically and by way of example one particular embodiment of the ski according to the invention and certain variants of manufacture of it.
  • FIG. l shows in transverse cross-section the constitutive elements of the ski when compressed by the tightening mold.
  • FIGS. 2 to 4 show schematically the different possible positions that a stiffening member of the ski is able to occupy.
  • the manufacturing method for a ski according to the invention consists in providing for at least one zone occupying at least one part of the thickness of the ski in which elements, made of a light material and extending for at least one part of the length of the ski, are disposed side by side across the width of said ski, then embedding these elements in a network of fibers impregnated with synthetic material, and rendering these elements unitary with the network of bers by solidication of the synthetic material.
  • a longitudinal cellular zone is formed, constituted by elements made out of a light material disposed side by side across the width of the ski and extending along at least one part at its length, these elements being embedded in a network of bers impregnated with synthetic material.
  • This said cellular zone formed by elements embedded in a mass of reinforced synthetic material may present a height equal to the thickness of the ski.
  • the ski is constituted by only one cellular zone.
  • the ski comprises, juxtaposed in its thickness, three distinct zones, the one constituted by the said cellular zone which is disposed in the lower part ofthe ski, an intermedate reinforcing or stilfening zone and a homogeneous zone similar to the said cellular zone but comprising only one element made out of a light material and extending across at least a part of the width and along at least a part of the length of the ski, embedded in a mass of reinforced synthetic material.
  • the ski is represented inside a mold 1 used for its manufacture which is generally V- shaped in transverse cross-section.
  • a mold 1 used for its manufacture which is generally V- shaped in transverse cross-section.
  • the constituent elements of the ski are disposed.
  • the illustrated ski is composed, in fact, of three different parts, a homogeneous upper zone, a stiffening median zone and a cellular lower zone which, when the ski is completed, form a unitary whole.
  • FIG. 1 of the drawing showing a transverse cross-section, such as it is when the ski is completed
  • the three above-mentioned zones are constituted as follows:
  • the homogeneous upper zone comprises an element or support 2 made out of a light material, for example wood, compacted sawdust or compacted chips, an expanded or unexpanded plastic material, a thermoplastic or thermosetting material, obtained by extrusion, molding or forming, extending along at least a part of the length and across a part of the width of the ski.
  • This element or support is embedded in a network of bers 3 impregnated with synthetic material.
  • This homogeneous zone presents thus the general aspect of a mass of synthetic material reinforced by means of a network of fibers, for example a network of glass fibers, in which element 2 is entirely embedded.
  • ⁇ rDhis upper palt presents further, in the embodiment shown a facing surface 4 extending across the whole width and along the whole length of the ski and which is xed, for example by glueing on one of the faces of the said upper part.
  • This facing surface is constituted by a sheet of plastic material covered with fabric which may be colored and its glueing on the outside surface of thekupper part may be effected during the manufacture of the ski through adhesion to the synthetic material embedding the element 2.
  • This facing surface 4 presents preferably a high hardness and confers to the ski the desiredk appearance with respect to its color, etc., but it accounts for very little of the technical qualities of strength and elasticity of the ski.
  • the stiffening median zone comprises a metalic core 5 constituted by a metal strip extending along the Whole length of the ski and across the greatest part of its Width.
  • the core is provided with perforations 6.
  • Wicks 7, made out of plated or unplated fiber, impregnated with synthetic materials, are engaged in these perforations 6 in order to be disposed along both faces of the metallicA core 5.
  • these perforationsY are aligned in the transverse direction of the ski and these wicks 7 are disposed in transverse planes of the ski.
  • the perforations 6 could be aligned in the longitudinal direction of the ski and that these wicks 7 could be located in longitudinal planes of the ski. It is further possible that the perforations 6 could be disposed arbitrarily and that the wicks 7 could follow crooked lines.
  • these Wicks are situated along both sides of the metallic core 5.
  • This metallic core 5 is provided with its wicks 7 is embedded in a layer S of a synthetic material which is reinforced Witha network made of glass fibers, for example.
  • the synthetic material impregnating the wicks 7 and the network of fiber forming the layer 8 intermingle in such a Way that during the hardening of this synthetic material the wicks 7 and the network of fiber of the layer 8 form a single piece of reinforced synthetic material. In this manner it is possible to effect a close linkage hindering any relative displacement between the layer 8 of the reinforced synthetic material and the metallic core 5. Further it is recommended to sandblast the metallic core before embedding it in the layer 8 for increasing the adhesion coefficient of the synthetic material forming said layer 8 onto the,
  • the stiffening zone is particularly intended to confer a gerat elasticity to the ski.
  • the metallic core 5 is fixed in such a way as to hinder any relative displacement of it with respect to the surrounding synthetic material conferring to the ski, taken as a whole, a modulus of elasticity which is near that of the metal constituting the core S which is much higher than the one of the mass of synthetic material.
  • the cellular lower zone of the' ski comprises elements or supports 9, 10, 11 made out of a light material similar to the material constituting the element 2 of the homogenous zone, disposed side by side across the width of the ski and extending along the Whole lengthV of the ski.
  • These elements 9:, 10,11 are embedded in a synthetic material reinforced with a network of glass ber, for example.
  • This cellular zone forms a reinforced mass of synthetic material 12 ⁇ comprising longitudinal partitions 13 separating the elements 9, 10, 11 which are entirely embedded in this reinforced mass of synthetic material.
  • the median element it has a longitudinal groove 14 -extending alongthe greated part of the length of the ski.
  • the ski is further provided on its free lower face With a yslidingY surface 15 constituted by a sheet of plastic material lcovered with fabric the composition of which is such that it presents good sliding characteristics. face, presenting a hardness lower than that of the .facing surface 4, is fixed by glueing during the manufacture through adherence of the reinforced synthetic material of the envelope 12 onto the plastic material covered with fabric of said sliding surface 15.
  • the lower part of the ski comprises further metallic reinforcements 16 extending on each side of the ski and along the whole or part of its length.
  • This sliding sur ⁇ comprise an external part 17 of great thickness which may project out of the synthetic material of the ski and contact the ground, and internal part 1S of lesser thickness presenting at least one row of holesy 19 distributed along its Whole length and intended for the anchorage of supports in the synthetic material of the-ski.
  • lVicks 20 of fibers, plaited or unplaited, impregnated with synthetic maerials are engaged in these holes 19 either transversely (as shown) or longitudinally and are thus disposed alternatively on the one and on the other side of this internal part 1S of the reinforcements 16.
  • the synthetic material of these wicks intermingles with that of the envelope 12 of the lower part of the skiso that after hardening of this synthetic material the reinforcements are unitary with said lower part.
  • the stiffening zone is located between the upper and lower parts of the ski, the facing surface 4 and the sliding surface lbeing respectively located towards the outside of the thus'cornpleted assembly.
  • the synthetic material of the layers 3, 8 and 8, 12 of each of the respective zones intermingles enabling to obtain, after the hardening of this synthetic material, a ski formed by elements embedded in only one part of synthetic material thus ensuring a great strength of the assembly.
  • the ski according .to the present invention fulfilling the necessary condition of being monolithic nevertheless segregates the lower, med-ian .and upper pants of it'so as ⁇ to ⁇ that the synthetic material will closely embedall the elements andeffefct the tight ski.
  • FIGS, 2 to 4 show respectively .the three possible positions of said core 5, that is, in the lower part of t-he ski (FIG. 2), in the upper part of the ski (FIG. 3) or in the median part (FIG. 4).
  • This core S may further present a Vlength approximately equal to that of the ski or a much smaller length in which case this core would be disposed in the center part of the ski.
  • This core may also be constituted by several juxtaposed metal-lic sheets.
  • the number of longitudinal partitions 13 of the cellular ⁇ zone could be greater than two. Further these partitions 13 have been shown ⁇ as inclined with respect to the longitudinal symmetry plane of the ski.. However, this inclination is variable and these partitions could be parallel to this said symmetry plane.
  • ⁇ described ⁇ ski comprises three different zones, however, it is possible to provide for skis comprising only one or two different Zones.
  • a ski could comprise only one cellular zone presenting a height approximately equal tothe thickness of the ski.
  • a ski could be formed by two zones only, one cellular zone and either a homogeneous zone or a stitfening zone disposed on one or the other side of the cellular zone.
  • the lower part of the ski could be constituted either by the homogeneous zone or by the stilening zone.
  • the median and upper parts of the ski could be formed by a cellular or homogeneous zone, and by a cellular or stifening zone, respectively;
  • the metallic reinforcements 16 could be tted under the sliding Surface 15 and screwed to this surface by means of screws, for example.
  • the cellular zone could comprise longitudinal partitions 13 disposed, no longer in the direction of the thickness of the ski, but in the direction of the ywidth of said ski.
  • a variant could comprise longitudinal partition-s 13 disposed in the direction of the thickness of the ski as Well as in the direction of the Width of the ski.
  • the mounting of the ski binding could be fixed or anchored on one of the metallic elements embedded in the mass of synthetic material of the ski.
  • the pertorations or the holes provided respectively in the core and in the metallic reinforcements could be constituted by openings having any shape, for example, slots which are open or not, on the sides olf these metallic parts.
  • openings having any shape, for example, slots which are open or not, on the sides olf these metallic parts.
  • the fiber wicks extend along both .sides of the corresponding metallic part.
  • a ski comprising a plurality of parallel elongated bodies extending lengthwise of the ski in a common horizontal plane and spaced laterally from each other, and resin-bonded glass liber in the form of a unitary body that ysurrounds each said elongated body and spaces said elongated bodies laterally apart, vsaid elongated bodies having cross-sectional congur-ations of substantial extent in all directions, the material of said elongated bodies having a density substantially less than the density of said unitary body.
  • a ski as claimed in claim 1 and a resilient metal strip of substantial thickness embedded in said unitary body above said elongated bodies, and a horizontal flat elongated body extending lengthwise of the and embedded in said unitary body above said strip and having a cross-sectional configuration of substantial extent in all directions, the material of said dat body having a density substantially less than the density of said unitary body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Laminated Bodies (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US264094A 1962-03-18 1963-03-11 Manufacturing method for a ski and ski obtained by this method Expired - Lifetime US3199882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH322862A CH377700A (fr) 1962-03-18 1962-03-18 Procédé de fabrication d'un ski et ski obtenu par ce procédé

Publications (1)

Publication Number Publication Date
US3199882A true US3199882A (en) 1965-08-10

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US264094A Expired - Lifetime US3199882A (en) 1962-03-18 1963-03-11 Manufacturing method for a ski and ski obtained by this method

Country Status (5)

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US (1) US3199882A (fr)
AT (1) AT254749B (fr)
CH (1) CH377700A (fr)
DE (1) DE1428943A1 (fr)
FR (1) FR1350389A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322435A (en) * 1965-01-29 1967-05-30 Kirschner Howard William Ski
US3356380A (en) * 1965-04-22 1967-12-05 Columbia Products Co Fabricated ski
US3393918A (en) * 1965-04-05 1968-07-23 Styka Andrew Filament wound resin reinforced structure and method
US5169170A (en) * 1990-04-17 1992-12-08 Yamaha Corporation Sandwich type ski

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT312472B (de) * 1969-12-01 1974-01-10 Isovolta Verfahren zur Herstellung eines Skibelages
DE3071445D1 (en) * 1979-07-24 1986-04-03 Isovolta Process for preparing sheets of elastomer material and utilisation thereof for sticking
AT375831B (de) * 1982-11-02 1984-09-10 Kaestle Gmbh Ski, insbesondere langlaufski
AT380399B (de) * 1984-05-07 1986-05-12 Isosport Verbundbauteile Skibauteil sowie verfahren zu seiner herstellung
DE3439682A1 (de) * 1984-10-10 1986-04-17 Lutz Alois 8024 Oberhaching Post Deisenhofen Wintersberger Armierungseinlage fuer skier
AT400679B (de) * 1990-03-09 1996-02-26 Atomic Austria Gmbh Schi
AT397209B (de) * 1990-09-27 1994-02-25 Rohrmoser Alois Skifabrik Ski mit einer räumlich profilierten oberseite

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR985174A (fr) * 1948-05-01 1951-07-16 Ski composé d'éléments superposés
US2581532A (en) * 1946-08-23 1952-01-08 Arne G Hem Ski
FR60548E (fr) * 1949-12-28 1954-11-09 Perfectionnements apportés aux skis
US2695178A (en) * 1950-06-15 1954-11-23 Jr George B Rheinfrank Laminated ski and method of making same
FR1092526A (fr) * 1953-10-28 1955-04-22 Manuf De Confection Berthiot M Procédé de fabrication des skis
CA572337A (fr) * 1959-03-17 D. Scott Delmer Structure de ski et methode pour sa fabrication
AT217924B (de) * 1958-11-20 1961-10-25 Anton Kaestle Mehrschichtenschi
US3132874A (en) * 1960-10-12 1964-05-12 Baudou Antoine Ski

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA572337A (fr) * 1959-03-17 D. Scott Delmer Structure de ski et methode pour sa fabrication
US2581532A (en) * 1946-08-23 1952-01-08 Arne G Hem Ski
FR985174A (fr) * 1948-05-01 1951-07-16 Ski composé d'éléments superposés
FR60548E (fr) * 1949-12-28 1954-11-09 Perfectionnements apportés aux skis
US2695178A (en) * 1950-06-15 1954-11-23 Jr George B Rheinfrank Laminated ski and method of making same
FR1092526A (fr) * 1953-10-28 1955-04-22 Manuf De Confection Berthiot M Procédé de fabrication des skis
AT217924B (de) * 1958-11-20 1961-10-25 Anton Kaestle Mehrschichtenschi
US3132874A (en) * 1960-10-12 1964-05-12 Baudou Antoine Ski

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322435A (en) * 1965-01-29 1967-05-30 Kirschner Howard William Ski
US3393918A (en) * 1965-04-05 1968-07-23 Styka Andrew Filament wound resin reinforced structure and method
US3356380A (en) * 1965-04-22 1967-12-05 Columbia Products Co Fabricated ski
US5169170A (en) * 1990-04-17 1992-12-08 Yamaha Corporation Sandwich type ski

Also Published As

Publication number Publication date
AT254749B (de) 1967-06-12
CH377700A (fr) 1964-05-15
DE1428943A1 (fr) 1969-03-06
FR1350389A (fr) 1964-01-24

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