EP0501853A1 - Auswechselbare keramische Stolle - Google Patents

Auswechselbare keramische Stolle Download PDF

Info

Publication number
EP0501853A1
EP0501853A1 EP92400447A EP92400447A EP0501853A1 EP 0501853 A1 EP0501853 A1 EP 0501853A1 EP 92400447 A EP92400447 A EP 92400447A EP 92400447 A EP92400447 A EP 92400447A EP 0501853 A1 EP0501853 A1 EP 0501853A1
Authority
EP
European Patent Office
Prior art keywords
ceramic
crampon
alumina
zirconia
intended
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Withdrawn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
EP92400447A
Other languages
English (en)
French (fr)
Inventor
Bruno Berard
Marc Gaillard
Yves Gougouyan
Daniel Lironcourt
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.)
C I C E SA
Original Assignee
C I C E SA
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 C I C E SA filed Critical C I C E SA
Publication of EP0501853A1 publication Critical patent/EP0501853A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A43C15/162—Studs or cleats for football or like boots characterised by the shape
    • A43C15/164—Studs or cleats for football or like boots characterised by the shape having a circular cross section
    • A43C15/167—Studs or cleats for football or like boots characterised by the shape having a circular cross section frusto-conical or cylindrical

Definitions

  • the invention relates to a crampon for sports shoes, more specifically intended for the exercise of team sports such as football or rugby mainly.
  • the crampons are intended to ensure a good grip on the ground during the various movements involved in the practice of a sport.
  • the fixing system which ensures the rigidity of the assembly and the maintenance under the sole is generally made of a resistant material (steel) or is oversized (hence problem of standardization).
  • These known studs thus have the drawback that the lowering of costs is fictitious because their longevity is very reduced and their security is very insufficient.
  • crampons using hard materials they can be divided into two categories according to whether these hard materials constitute the essential of these crampons (that is to say the essential of the external surface of the protrusions of the sole) or only part of them. In the first case we sometimes speak of solid spikes and in the second case we speak of reinforced spikes.
  • Solid spikes are described for example in document US-3,522,669 (SIMONS) or in documents FR-2,532,825 and DE-3,233,900 (from SPORTARTIKEL-FABRIK KARL ÜHL GmbH). These massive studs are essentially made of alumina.
  • document US-3,522,669 which dates from 1970, mainly targets golf cleats; these contain at least 85% of alumina, the rest (possibly zero) being formed of components adapted to form a glassy phase intended for the good cohesion of the alumina particles.
  • Documents FR-2,532,825 and DE-3,233,900 describe, among other embodiments, studs made entirely of alumina and teach, taking into account the great fragility of this material, to embed these studs of alumina in a frame suitable for absorbing the bending forces experienced during the practice of a sport.
  • the inserts are often heavy (density greater than 6 which can reach 20 in the case of tungsten carbide) - which limits them to specific uses such as golf - expensive, and crampons as a whole are complicated and expensive to manufacture.
  • the surrounding body is often made of a plastic material, whose moderate mechanical properties lead to risks of deterioration with risks of the formation of sharp edges, and which can be unstable when the crampons are subjected to severe conditions of use (humidity, shock, abrasion, temperature), which can jeopardize the integrity of the stud.
  • interchangeable removable studs described in these documents are always reinforced studs comprising a hard insert in a softer body.
  • the object of the invention is to overcome the aforementioned drawbacks by proposing an interchangeable removable crampon combining good wear resistance and good shape stability over time (even in the event of impact), therefore a long service life, while being light and simple to manufacture (therefore capable of being produced in automated series and therefore of moderate cost).
  • the invention thus proposes, a removable crampon for collective sports shoe, comprising a ceramic support portion intended to come to rest on the ground, a body carrying this ceramic support portion, a temporary fixing piece intended for the removable attachment of this body to such a shoe and a maneuvering portion, characterized in that the body and the support portion are part of a single piece made of an entirely ceramic material, based on alumina, which constitutes the essential of the external surface of the crampon.
  • the crampons of FIGS. 1 and 2 respectively marked 1 and 1 ′ comprise a support portion 2 or 2 ′ intended to come to rest on the ground, a portion 3 or 3 ′ forming a body and constituting the essential of the lateral surface of the crampon, and a temporary fixing part 4 or 4 ′, here a threaded rod, intended for the removable fixing of this body to the sole of a shoe (not shown).
  • the portions 2 and 3 are one and the same ceramic part or a ceramic / ceramic composite.
  • the crampon has an operating portion 5 or 5 ′, here in cross section in the form of a hexagon nut intended to facilitate the assembly / disassembly of the whole of the crampon in a sole.
  • This operating portion is part of the ceramic body while in the example in FIG. 2 this operating portion is a part 6 ′ separate from this body, preferably integral with the threaded rod of fixing 4 ′.
  • a material with a good hardness / wear resistance / mechanical resistance compromise we choose a material with a good hardness / wear resistance / mechanical resistance compromise.
  • a ceramic / ceramic composite material, alumina zirconia is chosen, which has the advantage of combining low density, good mechanical resistance, good resistance to wear and impact and moderate cost.
  • the volume composition of this alumina ceramic is 60 to 80% of alumina and 40 to 20% of zirconia, in practice itself stabilized at 2.5 mol% of Yttrium oxide. According to a preferred range, the ceramic contains between 25% and 33% of zirconia and 75% and 67% of alumina. Of preferably, a composition of 75% alumina and 25% of ythriated zirconia is used.
  • the high proportion of alumina allows a moderate cost, while the presence of zirconia favors obtaining good tenacity.
  • the ceramic alumina-based
  • the ceramic be the predominant part of the assembly, including its visible external surface, and ensure its structure and rigidity.
  • the ceramic part generally consists of a cylinder of height h and diameter d comprising at one of its ends a flat or slightly curved face forming the bearing surface 2, 2 ′ Connected to the generatrices of the cylinder by radii of curvature r.
  • the other end has a housing 8 or 8 ′ for anchoring the head of the fixing piece.
  • the h / H ratio is at least equal to approximately 2/3 ( Figure 2 where the height of the ceramic piece is noted h ) and preferably as close as possible of 1 (figure 1). In fact, it has appeared in practice that the risks of damage in the third of the crampon which is near the sole are acceptable from the safety point of view. The difference between h (or h ′) and H corresponds in practice to the height of the operating part.
  • the ceramic / fastener volume ratio is a function of the nature of the ceramic and the height of the fastener entering the soleplate.
  • the thickness of the walls is advantageously at least equal to 3 mm for a stud 1 or 1 ′ as shown.
  • the ratio of ceramic surface to stud surface visible after installation under the sole preferably exceeds 0.70 (this is linked to the condition on the h / h ratio).
  • the fixing part is made of steel and the assembly with the ceramic body is obtained using a one-component epoxy adhesive sold under the name "PERMABOND ESP 108".
  • the operating part can also be made of steel, or be of a light alloy (aluminum). Many other materials can of course be envisaged, in particular plastics.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP92400447A 1991-02-28 1992-02-20 Auswechselbare keramische Stolle Withdrawn EP0501853A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9102410A FR2673362B1 (fr) 1991-02-28 1991-02-28 Crampon ceramique interchangeable.
FR9102410 1991-02-28

Publications (1)

Publication Number Publication Date
EP0501853A1 true EP0501853A1 (de) 1992-09-02

Family

ID=9410200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400447A Withdrawn EP0501853A1 (de) 1991-02-28 1992-02-20 Auswechselbare keramische Stolle

Country Status (2)

Country Link
EP (1) EP0501853A1 (de)
FR (1) FR2673362B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022618A1 (de) * 1997-10-30 1999-05-14 Peter Greiner Keramik-greifelement für sportschuhe
US6112433A (en) * 1997-10-30 2000-09-05 Greiner; Peter Ceramic gripping element for sports shoes
US6957503B2 (en) 2002-09-05 2005-10-25 Adidas International Marketing, B.V. Magnetically operable studs for footwear
EP1728448A1 (de) 2005-05-31 2006-12-06 Lotto Sport Italia S.p.A. Auswechselbare Stollenstruktur für Sportschuhe
US7370441B2 (en) * 2006-01-05 2008-05-13 Chuan-Li Chang Hobnail structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522669A (en) * 1969-02-28 1970-08-04 Coors Porcelain Co Athletic shoe
FR2404407A1 (fr) * 1977-09-28 1979-04-27 Dynamold International Crampon, notamment pour article chaussant tel que chaussures de football
DE2755844A1 (de) * 1977-12-15 1979-06-21 Uhl Sportartikel Karl Stollen fuer sportschuhe, insbesonddere schraubstollen
EP0210362A2 (de) * 1985-07-27 1987-02-04 Adidas Ag Stollenförmiges Greifelement für Sportschuhe
DE3915157A1 (de) * 1988-05-13 1989-11-23 Morito Co Ltd Stollen fuer sportschuhe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522669A (en) * 1969-02-28 1970-08-04 Coors Porcelain Co Athletic shoe
FR2404407A1 (fr) * 1977-09-28 1979-04-27 Dynamold International Crampon, notamment pour article chaussant tel que chaussures de football
DE2755844A1 (de) * 1977-12-15 1979-06-21 Uhl Sportartikel Karl Stollen fuer sportschuhe, insbesonddere schraubstollen
EP0210362A2 (de) * 1985-07-27 1987-02-04 Adidas Ag Stollenförmiges Greifelement für Sportschuhe
DE3915157A1 (de) * 1988-05-13 1989-11-23 Morito Co Ltd Stollen fuer sportschuhe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022618A1 (de) * 1997-10-30 1999-05-14 Peter Greiner Keramik-greifelement für sportschuhe
US6112433A (en) * 1997-10-30 2000-09-05 Greiner; Peter Ceramic gripping element for sports shoes
US6957503B2 (en) 2002-09-05 2005-10-25 Adidas International Marketing, B.V. Magnetically operable studs for footwear
US7481009B2 (en) 2002-09-05 2009-01-27 Adidas International Marketing B.V. Magnetically operable studs for footwear
EP1728448A1 (de) 2005-05-31 2006-12-06 Lotto Sport Italia S.p.A. Auswechselbare Stollenstruktur für Sportschuhe
US7370441B2 (en) * 2006-01-05 2008-05-13 Chuan-Li Chang Hobnail structure

Also Published As

Publication number Publication date
FR2673362A1 (fr) 1992-09-04
FR2673362B1 (fr) 1993-06-18

Similar Documents

Publication Publication Date Title
US20050198781A1 (en) Handlebar for cycles and motorcycles
FR2692633A1 (fr) Visserie en matériau composite constitué d'une matrice céramique renforcée de fibres réfractaires.
EP2311650B1 (de) Verbundfelge und mit einer solchen Felge ausgestattetes Rad
FR2772851A1 (fr) Disque d'embrayage comprenant deux garnitures annulaires de friction solidarisees en rotation avec une partie de support et separees par un systeme elastique
CH699680A2 (fr) Dispositif de fixation d'un mobile.
EP0988466A1 (de) Scheibenbremse mit vorgespanntem führungsrohr
EP2469355A2 (de) Zusammenbau eines Teils, das keinen Plastikbereich enthält
EP0465794A1 (de) Ski mit gerippter Oberfläche
EP0501853A1 (de) Auswechselbare keramische Stolle
FR2532825A1 (fr) Semelle de chaussure de sport avec elements d'accrochage
FR2537682A1 (fr) Disque de friction pour embrayage comportant des moyens d'equilibrage
FR3036065A1 (fr) Procede de fabrication d'un triangle de suspension pour vehicule, et triangle de suspension obtenu par un tel procede
US20040026986A1 (en) Wheel, rim, rim eyelet and spoke nipple particularly for a bicycle
FR3064319A1 (fr) Garniture de frein
FR2765150A1 (fr) Jante pour roue de bicyclette
FR2888297A1 (fr) Disque de frein composite et procede de fabrication
FR2825239A1 (fr) Chaussure d'escalade sur glace
FR2714871A1 (fr) Roue en tôle.
EP1292488B1 (de) Radträgervorrichtung und vibrationsdämpfer für eine solche vorrichtung
BE1008044A5 (fr) Segment de coupe a concretion diamantee.
FR2894638A1 (fr) Patin de frein pour vehicules ferroviaires
EP0677308B1 (de) Schuhbindungselement für ein Gleitbrett
EP0898992A1 (de) Rad für Rollschuhe mit äusseren Streifen
FR2794826A1 (fr) Support antivibratoire equipe d'un cable limiteur inextensible
FR2655867A1 (fr) Fixation de securite de ski alpin.

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES GB GR IT LI LU MC NL PT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930303