(19)
(11) EP 0 441 318 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
22.06.1994 Bulletin 1994/25

(21) Application number: 91101515.4

(22) Date of filing: 05.02.1991
(51) International Patent Classification (IPC)5A63C 11/00, G09F 3/10

(54)

Ski with a permanent identification label

Ski mit einem permanenten Identifikationsetikett

Ski avec une étiquette permanente pour l'identification


(84) Designated Contracting States:
AT DE FR IT

(30) Priority: 05.02.1990 YU 214/90

(43) Date of publication of application:
14.08.1991 Bulletin 1991/33

(73) Proprietor: INSTITUT " JOZEF STEFAN"
SI-61000 Ljubljana (SI)

(72) Inventors:
  • Pirs, Janez, Dr.
    SI-61000 Ljubljana (SI)
  • Marin, Bojan, Dipl.-Ing.
    SI-61000 Ljubljana (SI)
  • Musevic, Igor, Dipl.-Ing.
    SI-61000 Ljubljana (SI)
  • Pirs, Silva
    SI-61000 Ljubljana (SI)
  • Kopac, Samo, Dipl.-Ing.
    SI-64000 Kranj (SI)

(74) Representative: Füchsle, Klaus, Dipl.-Ing. et al
Hoffmann Eitle, Patent- und Rechtsanwälte, Postfach 81 04 20
81904 München
81904 München (DE)


(56) References cited: : 
AT-B- 390 005
FR-A- 2 596 286
CH-A- 349 200
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] This application relates generally to the marking of skis and in particular to a ski as described in the preamble of Claim 1.

    [0002] There have been known skis with a metal identification label plate, which is both provided with a serial number of the ski and protects the ski tail or the ski tip. Disadvantageously, the label may not be legible after polishing the ski or after further steps of assembling the ski by gluing or providing the ski with a protective cover. For those reasons there cannot be reliably ascertained the quality of single steps and points within the technological process of manufacturing skis.

    [0003] Further, there is commonly known the marking of skis by impressing serial numbers onto the side faces of the ski. An identification of the ski marked in this way is only feasible after its manfucaturing process has been finished, the label, however, is not abrasion-proof.

    [0004] Recently, some producers have been marking skis with an optical bar code that considerably simplifies the automatization of the ski identification. In this way, however, only final products can be marked and no continuous checking of the manufacturing process is possible.

    [0005] In accordance with the foregoing background discussion, an object of this invention is to provide a ski with a simple and reliable identification labelling already during the entire manufacturing process of the ski as well as at storing, selling and at possible complaints or theft thereof, and the identification label of the ski proposed by the invention has to be abrasion-proof and safe from mechanical damages.

    [0006] With the foregoing objects in view, the ski with a permanent identification label in accordance with the invention is characterized by features of the characterizing portion of claim 1.

    [0007] An advantage of the ski with the permanent identification label proposed by the invention is that the identification plate is placed into one of the glue layers when assembling all layers of the ski, i. e. at the very beginning of the manufacturing of the ski. Thus the ski can be tracked during the whole process of its manufacture, which therefore can be automatically controlled. At finishing the ski surface, the identification plate cannot be damaged and it is also well protected against any future mechanical damaging of the ski surface. The identification plate is hidden and it can be read out at any time by an appropriate reader.

    [0008] The dependent claims 2 and 3 describe preferred embodiments.

    [0009] Other objects, advantages and features of the invention will be apparent from the following detailed description of the embodiment thereof, when read in conjunction with the accompanying drawings.

    [0010] In the drawings
    Fig. 1
    is a transversal cross section of a construction of a ski with a permanent identification label according to the invention,
    Fig. 2
    is a top view of the identification plate in the cross section along the line II-II in Fig. 1,
    Fig. 3
    is a transversal cross section of the identification plate across the line III-III in Fig. 2.


    [0011] Referring in detail to the drawings and particularly to Fig. 1, there is illustrated a transversal cross section of a ski with a permanent identification label. Naturally, the invention also relates to skis with a different mutual placing of their component layers. In the ski 1, for example, to both sides of a wooden or a plastic ski core 11 there are alternately placed glue layers 12 and reinforcing layers 13. The reinforcing layers 13 comprise reinforcing glas fibres or fibres made of carbon or kevlar. The last reinforcing layer 13 at the top of the ski 1 is covered by a glue layer 12 and by a top cover 14. The last reinforcing layer 13 at the bottom of the ski 1 is covered by a glue layer 12 and by a sliding cover 15. When assembling the layers 11, 12, 13, 14 and 15 of the ski 1, the identification plate 2 with a magnetically readable identification code is placed into one of the glue layers 12. The plate 2 is placed along the median line S of the glue layer 12.

    [0012] In the disclosed embodiment, the ski 1 of the invention is provided with an identification plate 2 using a magnetic bar code as an identification label. The identification plate 2 is represented in Fig. 2 as viewed from the top and in Fig. 3 as viewed in its transversal cross section. Along a non-magnetic plate 21 in the form of a strip, e. g. from polyester, magnetic bands 22a, ..., 22n are applied. The bands 22a, ... are mutually parallel and mutually distant for a multiple of a distance modulus D. The distance modulus D, whose value is between 5 and 10 mm, may be equal or exceed the distance d between the top cover 14 and the identification plate 2. The bands 22a,... are oriented transversally with respect to the ski 1. The magnetic bands 22a, ..., 22n are some 100 »m thick and are made of a polymer matrix, in which grains of a ferromagnetic material, e. g. of a granulated alloy Sm-Co with a high remanence and with a high coercitivity, are dispersed in epoxy resin. The grains of the ferromagnetic material are oriented by a strong magnetic field with the magnetic flux density 0.1 T during polymerization. Finally, this magnetic code is magnetized in a strong magnetic field with the magnetic flux density 2.5 T. In the case of identification by magnetic means, the cover 14 may be of non-ferromagnetic sheet metal, e. g. aluminum.

    [0013] The ski in accordance with the invention and of the presented embodiment is identified by an appropriate reader of the magnetic bar code. The magnetic bar code reader is scanned close to the cover 14 along the identification plate 2.
    Reference signs in the claim are intended for better understanding and shall not limit the scope.


    Claims

    1. A ski with a permanent identification label (2), in which ski (1) to the top and bottom sides of a ski core (11) there are placed alternately glue layers (12) and reinforcing layers (13), the last one reinforcing layer (13) at the top and at the bottom of the ski (1) being covered by a glue layer (12) and a cover (14) and by a sliding cover (15), respectively, characterized in
    that into one of the glue layers (12) an identification plate (2) with a magnetically readable identification label is placed.
     
    2. A ski as recited in claim 1, characterized in
    that the plate (2) is placed along the median line (S) of the layer (12).
     
    3. A ski as recited in claim 1 or 2, characterized in
    that on a non-magnetic plate (21) of the identification plate (2) along the ski (1) there are applied mutually parallel magnetic bands (22a, ..., 22n), which are mutually distant for a multiple of a distance modulus (D) and transversally oriented with respect to the ski (1), the modulus (D) exceeding the distance (d) between the top cover (14) and the identification plate (2).
     


    Ansprüche

    1. Ski mit einem permanenten Identifikationsetikett (2), in welchem Ski (1) an die Oberseite und an die Unterseite der Skikernschicht (11) abwechslungsweise Leimschichten (12) und Verstärkungsschichten (13) aufgebracht sind und die letzte Verstärkungsschicht (13) an der Oberseite und an der Unterseite des Skis (1) durch eine Leimschicht (13) und durch einen Oberbelag (14) beziehungsweise einen Gleitbelag (15) bedeckt sind, dadurch gekennzeichnet,
    daß in eine der Leimschichten (12) eine mit einem Identifikationsetikett versehene Identifikationsplatte (2) untergebracht ist.
     
    2. Ski nach Anspruch 1, dadurch gekennzeichnet,
    daß die Identifikationsplatte (2) entlang der Mittellinie (S) der Leimschicht (12) untergebracht ist.
     
    3. Ski nach Anspruch 1 oder 2, dadurch gekennzeichnet,
    daß an einer nicht-magnetischen Platte (21) der Identifikationsplatte (2) untereinander parallele magnetische Streifen (22a, ..., 22n), die voneinander um ein Vielfaches des Abstandsmoduls (D) entfernt und quer zum Ski (1) ausgerichtet sind, hindurch in der Längsrichtung des Skis (1) angeordnet sind, wobei der Abstandsmodul (D) den Abstand (d) zwischen dem Oberbelag (14) und der Identifikationsplatte (2) übersteigt.
     


    Revendications

    1. Ski doté d'une étiquette d'identification permanente (2), dans lequel ski (1) aux faces supérieure et inférieure d'un coeur de ski (11) sont placées tour à tour des couches de colle (12) et des couches de renfort (13), la dernière couche de renfort (13) sur le dessus et le dessous du ski (1) étant recouverte d'une couche de colle (12) et d'un revêtement supérieur (14) et d'un revêtement glissant (15), respectivement, caractérisé en ce que dans une des couches de colle (12) une étiquette d'identification (2) avec un code d'identification par lecture magnétique est placée.
     
    2. Ski selon la revendication 1, caractérisé en ce que l'étiquette (2) est placée le long de la ligne médiane (S) de la couche (12).
     
    3. Ski selon la revendication 1 ou 2, caractérisé en ce que sur une plaque non magnétique (21) de l'étiquette d'identification (2) le long du ski (1) sont appliquées des bandes magnétiques (22a, ..., 22n) parallèles, qui sont distantes les unes des autres d'un multiple d'un module de distance (D) et orientées transversalement par rapport au ski (1), le module (D) étant supérieur à la distance (d) entre le revêtement supérieur (14) et l'étiquette d'identification (2).
     




    Drawing