EP0249894A2 - Ski - Google Patents

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Publication number
EP0249894A2
EP0249894A2 EP87108464A EP87108464A EP0249894A2 EP 0249894 A2 EP0249894 A2 EP 0249894A2 EP 87108464 A EP87108464 A EP 87108464A EP 87108464 A EP87108464 A EP 87108464A EP 0249894 A2 EP0249894 A2 EP 0249894A2
Authority
EP
European Patent Office
Prior art keywords
elements
side rail
ski
ceramic
outer sides
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.)
Granted
Application number
EP87108464A
Other languages
German (de)
English (en)
Other versions
EP0249894A3 (en
EP0249894B1 (fr
Inventor
Burger Dr. Dipl.-Chem. Wolfgang
Gert Wloka
Helmut Dipl.-Ing. Sommer
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.)
Cessione cerasiv Innovative Keramik - Enginee GmbH
Original Assignee
Feldmuehle AG
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 Feldmuehle AG filed Critical Feldmuehle AG
Priority to AT87108464T priority Critical patent/ATE61740T1/de
Publication of EP0249894A2 publication Critical patent/EP0249894A2/fr
Publication of EP0249894A3 publication Critical patent/EP0249894A3/de
Application granted granted Critical
Publication of EP0249894B1 publication Critical patent/EP0249894B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63C5/04—Structure of the surface thereof
    • A63C5/048—Structure of the surface thereof of the edges

Definitions

  • the invention relates to the side rail of a ski according to the preamble of patent claim 1.
  • a ski is known from US-A-33 95 928, the entire outsole and thus also part of the tread edge is provided with a porcelain-like enamel coating which is applied to a metal plate connected to the wooden ski body.
  • the wear resistance of this known coating is very low, and there is also the danger that the bending stress that occurs when the ski is in use, due to the large-area coating on the entire underside, will lead to chipping, or at least to cracks in the coating.
  • DE-A-15 78 902 also describes the use of ceramic materials to form a side rail in a ski. It is stated here that the side rail as a whole can be produced from hard materials, which also include ceramic materials. Suitable hard materials should have sufficient elasticity.
  • DE-A-15 78 902 describes the application of a thin layer, which should preferably be less than 0.5 mm, as particularly expedient. Such layers can be applied by flame spraying or sintering.
  • the hard materials mentioned, such as hard metals, metal carbides or metal oxides have a higher wear resistance than the porcelain-like material known from US Pat. No. 3,395,928 Enamel coating, however, there is still a risk of the coating flaking off the metallic coating substrates, in particular because of the known adhesion problems between metal and ceramic and as a result of the different thermal expansion coefficients between metal and ceramic.
  • the invention aims to provide a side rail of a ski with improved durability and a significantly increased wear resistance, so that regrinding is no longer necessary.
  • the invention aims to provide a side rail with better sliding properties.
  • the invention provides the characteristic features of a side rail according to the preamble of the main claim.
  • side rail used in the claims and description of the present application is to be understood to mean the component or components which are arranged on the outsole side, form the lateral reinforcing edges of the ski and thereby form a partial region of the outsole and at least part of the surface of the ski which is perpendicular to the outsole form.
  • the arrangement of shaped sintered bodies according to the invention in the areas of the tread edge that are subject to particularly high wear results due to the higher strength, especially one high grain boundary strength of sintered shaped bodies, at a significantly lower wear compared to the known coatings.
  • the use of sintered moldings eliminates the permanent danger that coatings have that the coatings flake off their supports.
  • the measure that the side rail is composed of individual elements that are not connected to one another is of very great importance, either the individual elements themselves being made of sintered shaped bodies or sintered shaped bodies being embedded in metallic elements in such a way that their outer sides partially consist of the ceramic sintered shaped bodies . Since the individual elements are not connected to each other, the flexibility of the ski body is retained.
  • the design of the elements as an all-ceramic body is particularly preferred, since this enables the highest wear resistance.
  • the inventive design of the side rail from elements that are not connected to one another also offers the possibility of coating substrates made of ceramic or metal with ceramic materials and thus obtaining elements which do not have the disadvantages of the skis known from the prior art.
  • the ski when the ski is used in one-piece side rails or coated outsoles, there is a risk of the coating flaking off due to the deflection of the ski body.
  • an embodiment characterized by claim 2 has proven to be particularly preferred, since this largely prevents the individual elements from rubbing against one another when the ski bends. A distance of 3/10 to 4/10 mm measured on the outsole side is preferred.
  • a further embodiment characterized by claim 3 is preferred because it avoids contact with the individual elements forming the side rail even more reliably in the case of the pressure exerted by the skier or the deflection of the ski caused thereby.
  • zirconium oxide in particular has proven to be very particularly suitable, since this material leads to particularly good sliding behavior on snow and ice, moreover a particularly high flexural strength and fracture toughness, a relatively high impact resistance and also a certain elasticity disposes.
  • Aluminum oxide is particularly preferred from an economic point of view and also allows the production of particularly complicated shapes.
  • aluminum oxide has a relatively high hardness.
  • Mixtures consisting essentially of aluminum oxide and 1 to 30% by volume of zirconium oxide are also outstandingly suitable because they have good toughness.
  • Silicon carbide is because of its low specific weight compared to ferrous metals or the associated approx. 50% weight saving is preferred. Another advantage is the extraordinarily high hardness and the low R a value (arithmetic mean roughness). As a result, favorable sliding properties are achieved.
  • pressure-free sintered or hot-pressed silicon carbide is preferred.
  • silicon nitride also result from the low specific weight, its high flexural strength and high wear resistance. Silicon nitride sintered without pressure is particularly suitable.
  • the embodiments characterized by claim 5 are preferred because of the particularly high hardness of the coatings produced.
  • a further improvement in the material properties, in particular the toughness, is possible by adding so-called whiskers, preferably made of silicon carbide.
  • the elements can be produced from metal and a molded sintered body made of ceramic material, which forms part of the outer sides of the individual element, by gluing or soldering.
  • the connection of such an element or an element which is designed as a sintered shaped body made of ceramic material with the ski or with its individual layers can be done by welding, gluing and embedding in the ski body.
  • the elements can be provided with a tongue and groove, toothing, dovetails or openings made in their edge legs to achieve a positive connection.
  • these or similar designs are possible with a sintered molded body which is inserted into a single metallic element to form the outer edge region.
  • the size and shape of the elements forming the side rail according to the invention are to be matched to the intended use of the ski, elements which have a length of 25 to 100 mm in the direction of travel of the ski and in which the outsole side with the Contact with the arranged ceramic has a width of approx. 4 mm.
  • the formation of the side rail according to the invention in the area below the ski binding has proven to be particularly valuable.
  • a particularly expedient embodiment of the side rail is produced when the elements - seen in the side view - are parallelogram or trapezoidal.
  • the trapezoidal shape enables minimal distances on the outsole, which should preferably not exceed 0.4 mm, but can be reduced to values of up to 0.05 mm in order to achieve particularly good sliding behavior, with the distances in the area opposite the outsole being achieved at the same time a particularly good deflection are higher.
  • a metallic, individual element (21) along the adhesive area (13) with the layers (2.), (3), (4) and (5) is inserted into the ski (1) and connected to the layers of the ski by gluing.
  • a sintered molded body (28) made of partially stabilized zirconium oxide is inserted into the element (21) and connected by a solder joint (14).
  • the sintered molded body (28) forms part of the outer sides (11) and (12) of the element (21).
  • FIG. 2 shows an embodiment of an element (23) which is solid as a sintered shaped body and along the adhesive area (13) the layers (2), (3), (4) and (5) of the ski (1) is glued.
  • This embodiment thus shows completely made of ceramic outer sides (11) and (12), so that the side rail formed by elements (23) has an improved sliding behavior in its entire contact area.
  • FIG. 3 shows an element (22) connected to the layers (2), (3), (4) and (5) of the ski (1) along the adhesive area (13), the outer sides (16) and (17) of which To form the outer sides (11) and (12) are provided with a coating (18) made of titanium carbide.
  • An opening (24) in the edge leg (8) can be filled with the layers (3) and (5) with adhesive to increase the bond strength.
  • Figures 4 to 8 show different profile embodiments, according to which the elements (21), (22) and (23) can be designed to achieve a positive connection with the individual layers of the ski, which leads to the omission of the edge legs (8) can lead, which are only indicated by dash-dotted lines.
  • FIG. 9 shows a side rail (15), formed from elements (23) arranged at a distance from one another, with end faces (7) formed at the connection points (19) at right angles to the outsole.
  • the distance A between the individual elements (23) is 0.35 mm at the connection points (19).
  • the elements are trapezoidal when viewed from the side formed so that V-shaped connection points (19 ' ). arise. This makes it possible to form the lower distance A 'close to 0 (approx. 0.1 mm), which serves to improve the sliding properties.
  • FIG. 11 shows elements (23 ") combined with rounded end faces (7) to form a side rail (15). At the connection points (19") the smallest distance A "(outsole side) is 0.1 mm.
  • FIG. 12 shows a side rail (15) formed from elements (23 '' ') which, viewed from the side, have a parallelogram shape and are arranged at the connection points (19' ') at a distance A' '' of 0.4 mm from one another
  • the direction of travel is indicated by F.
  • the helix angle ⁇ is 30 °. The embodiment enables good sliding behavior.
  • Figure 13 shows a side rail (15) formed from elements (23 '' '') which are beveled at their end faces (7) with different angles ⁇ and ⁇ , so that there is a wedge gap with angle ⁇ .
  • This design combines the advantages of the design according to FIG. 10 (small distance) with that of FIG. 12 (low driving resistance).

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Lubricants (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Railway Tracks (AREA)
  • Details Of Aerials (AREA)
  • Ceramic Products (AREA)
  • Golf Clubs (AREA)
  • Polyesters Or Polycarbonates (AREA)
EP87108464A 1986-06-14 1987-06-11 Ski Expired - Lifetime EP0249894B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87108464T ATE61740T1 (de) 1986-06-14 1987-06-11 Ski.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863620091 DE3620091A1 (de) 1986-06-14 1986-06-14 Ski
DE3620091 1986-06-14

Publications (3)

Publication Number Publication Date
EP0249894A2 true EP0249894A2 (fr) 1987-12-23
EP0249894A3 EP0249894A3 (en) 1988-09-21
EP0249894B1 EP0249894B1 (fr) 1991-03-20

Family

ID=6303031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108464A Expired - Lifetime EP0249894B1 (fr) 1986-06-14 1987-06-11 Ski

Country Status (4)

Country Link
EP (1) EP0249894B1 (fr)
JP (1) JPS6340582A (fr)
AT (1) ATE61740T1 (fr)
DE (2) DE3620091A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332503A1 (fr) * 1988-03-02 1989-09-13 Seb S.A. Ski à carres améliorées
AT394679B (de) * 1990-02-09 1992-05-25 Tce Technical Coatings Enginee Hartstoffbeschichtung an kufen von wintersportgeraeten
EP0887090A1 (fr) * 1997-06-27 1998-12-30 Skis Rossignol S.A. Procédé de préparation de carres pour planche de glisse
WO2003086554A1 (fr) * 2002-04-08 2003-10-23 Four Star Distribution Planche a neige equipee de carres non metalliques
AT413796B (de) * 2004-03-08 2006-06-15 Moerth Marlene Gleitflächen, beläge, kanten und kufen von wintersportartikeln
AT501171A1 (de) * 2001-05-16 2006-07-15 Stahlwerk Ergste Westig Gmbh Gleitkantenprofil

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426041U (fr) * 1990-06-20 1992-03-02
DE102007020566A1 (de) 2007-05-02 2008-11-06 Christian Ziegler Kante oder Kufe für Wintersportgeräte
USD763627S1 (en) 2014-07-08 2016-08-16 Keurig Green Mountain, Inc. Beverage cartridge holder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578902A1 (de) * 1966-05-26 1970-10-15 Simon Fa Karl Seitenschiene fuer Skier
FR2124650A5 (fr) * 1971-01-29 1972-09-22 Olin Authier Sa
AT339793B (de) * 1975-09-02 1977-11-10 Stugger Walter F Schneeski

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3395928A (en) * 1966-03-17 1968-08-06 Eglit Barney Snow ski with porcelain running surface
JPS5525449A (en) * 1978-08-14 1980-02-23 Mitsui Toatsu Chem Inc Expandable thermoplastic resin composition
AT379313B (de) * 1984-04-16 1985-12-27 Deutsch Friedrich Skikante mit integriertem spitzen- und bzw. oder endenschutz
JPS61244379A (ja) * 1985-04-23 1986-10-30 住友電気工業株式会社 スキ−板

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578902A1 (de) * 1966-05-26 1970-10-15 Simon Fa Karl Seitenschiene fuer Skier
FR2124650A5 (fr) * 1971-01-29 1972-09-22 Olin Authier Sa
AT339793B (de) * 1975-09-02 1977-11-10 Stugger Walter F Schneeski

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332503A1 (fr) * 1988-03-02 1989-09-13 Seb S.A. Ski à carres améliorées
AT394679B (de) * 1990-02-09 1992-05-25 Tce Technical Coatings Enginee Hartstoffbeschichtung an kufen von wintersportgeraeten
EP0887090A1 (fr) * 1997-06-27 1998-12-30 Skis Rossignol S.A. Procédé de préparation de carres pour planche de glisse
FR2765113A1 (fr) * 1997-06-27 1998-12-31 Rossignol Sa Procede de preparation de carres pour planche de glisse et planche de glisse obtenue avec ces carres
AT501171A1 (de) * 2001-05-16 2006-07-15 Stahlwerk Ergste Westig Gmbh Gleitkantenprofil
AT501171B1 (de) * 2001-05-16 2007-01-15 Stahlwerk Ergste Westig Gmbh Gleitkantenprofil für wintersportgeräte
WO2003086554A1 (fr) * 2002-04-08 2003-10-23 Four Star Distribution Planche a neige equipee de carres non metalliques
AT413796B (de) * 2004-03-08 2006-06-15 Moerth Marlene Gleitflächen, beläge, kanten und kufen von wintersportartikeln

Also Published As

Publication number Publication date
JPS6340582A (ja) 1988-02-20
DE3768712D1 (en) 1991-04-25
ATE61740T1 (de) 1991-04-15
EP0249894A3 (en) 1988-09-21
DE3620091C2 (fr) 1988-12-08
EP0249894B1 (fr) 1991-03-20
DE3620091A1 (de) 1987-12-23

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