EP0321026A2 - Schlittschuh - Google Patents

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Publication number
EP0321026A2
EP0321026A2 EP88202808A EP88202808A EP0321026A2 EP 0321026 A2 EP0321026 A2 EP 0321026A2 EP 88202808 A EP88202808 A EP 88202808A EP 88202808 A EP88202808 A EP 88202808A EP 0321026 A2 EP0321026 A2 EP 0321026A2
Authority
EP
European Patent Office
Prior art keywords
fibres
tubular part
skate
fabrics
gliding element
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Withdrawn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
EP88202808A
Other languages
English (en)
French (fr)
Other versions
EP0321026A3 (en
Inventor
Martinus Cornelis Adrianus Van Den Aker
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of EP0321026A2 publication Critical patent/EP0321026A2/de
Publication of EP0321026A3 publication Critical patent/EP0321026A3/en
Withdrawn legal-status Critical Current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
    • A63C1/00—Skates
    • A63C1/38—Skates of the tubular type
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/16—Skating boots
    • A43B5/1641—Skating boots characterised by the sole ; characterised by the attachment of the skate

Definitions

  • the invention relates to a skate substantially comprising a gliding element, a skate body and a shoe, which includes as part of the skate body a tubular part from fibre-reinforced matrix material into which the gliding element is fitted.
  • a skate body generally comprises a tube, a sole and heel support and a sole and heel plate, on which the shoe is mounted.
  • Such a skate is known from WO-A-87/05818.
  • the aim is to combine the lowest possible skate body weight with sufficient flexural stiffness and torsional strength. Therefore, the skate is made of a fibre-reinforced plastic material which combines a low weight with a high flexural stiffness and tor­sional strength.
  • the disadvantage of this known skate is that, in the case of temperature changes, shear stresses occur between the skate body and the gliding element, due to differences in coefficient of extension between the fibre-reinforced plastic material used for the tube of the skate body and the gliding element. Temperature changes occur as a result of the large difference between production temperature, storage temperature and use temperature. This may eventually result in the bond between skate body and gliding element being broken.
  • the object of the invention is a skate that does not have the said drawback.
  • the tubular part being constructed in such a way that its coefficient of thermal extension in the longitudinal direction of the gliding element is vir­tually the same as that of the gliding element, by the use of con­tinuous fibres having a coefficient of extension below zero with matrix material having a coefficient of friction above zero, the fibres being present in the matrix material in at least two direc­tions.
  • the matrix material reinforced with continuous fibres may also be referred to as the composite.
  • the man in the art can use the formula I as a guideline to calculate a resultant from the coefficients of extension of matrix and fibres for fibres oriented in one direction. which is equalled by the coefficient of extension of the gliding ele­ment ( ⁇ g).
  • the coefficient of friction of a composite reinforced with continuous fibres ( ⁇ c) can be determined from the coefficients of extension of the fibres and the matrix ( ⁇ f and ⁇ m , respectively), the volumetric proportions of the fibres and the matrix (V f and V m , respectively) and the fibre and matrix elasticities (E f and E m , respectively).
  • the fibres are arranged at particular angles with respect to one another, which means that formula 1 cannot be used as such, since the fibres have a negative coefficient of extension in longitudinal direction but not in transverse direction.
  • the composite is composed of several layers of continuous fibres, which are oriented in, for example, longitudinal direction and transverse direction or at angles of, for example, +45 ⁇ and -45 ⁇ relative to the longitudinal direction, the sum of the coefficients of extension in longitudinal direction of the several layers of fibres equalling the desired overall coefficient of extension in longitudinal direction for the fibres. It may be advantageous to orient the fibres in the matrix at angles of + and 45 ⁇ relative to the longitudinal direction, in connection with the resistance to torsion, but the invention is not limited to these angles, nor is it necessary to build up the composite from several layers, as long as the desired coefficient of extension in longitudi­nal direction is achieved.
  • ⁇ c any desired value of ⁇ c can be obtained, on account of the fact that the coefficients of extension of the matrix are usually more than zero, whereas those of the fibres are usually less than zero.
  • examples are given of fibre and matrix materials with a few materials of which the gliding element can be made, together with the coefficients of extension, without the invention being limited to these examples.
  • the graph shows that matrix material with a positive coef­ficient of extension in combination with glass fibres only will in most cases fail to result in the desired coefficient of extension.
  • a high volumetric proportion of fibre material is important.
  • the volu­metric proportion of matrix material usually does not exceed 60 %.
  • the space in the tube made from the composite is large.
  • the tube may function as a resonance body, and the sound of the gliding element gliding over the ice and the gliding element hitting the ice may be amplified to the point where it becomes a nuisance.
  • the space inside the tube may be filled with foam and/or with a pre-formed foam part.
  • the gliding element may be made of, for example, steel or another metal or from ceramic material with a high hardness and wear resistance, for example aluminium oxide, zirconium oxide, silicon nitride and silicon carbide. It is preferably made of steel.
  • the heel and sole support and the heel and sole plate are preferably also made of composite material as described above. However, they might also be made of, for example, a highly filled injection moulding or casting resin. It is possible to make the heel and sole support and the heel and sole plate in one piece.
  • the sup­ports are fastened to the tube by gluing, welding or mechanical means. Mechanical fastening of the heel and sole support to the tube, for example by rivets or screws, has the advantage that the supports can be replaced by new or other supports and plates without damage to the tube.
  • the skate can be made by, for example, one of the methods described below, Examples I, II or III.
  • the methods of Example I and II are discontinuous, while III can be carried out continuously.
  • Figures 1, 2 and 3 an example of the produced skate is shown.
  • Figure 1 is a side-view of the complete skate.
  • Figure 2 is a cross-section through A-A.
  • Figure 3 shows a cross-section in case the tube is moulded in one piece. The numbers in the methods described below refer to these figures.
  • the tube (3) consists of two shell parts.
  • the shell parts (10) are moulded in positive and/or negative mould halves, or are vacuum-formed.
  • use can be made of dry fibres, fabrics/mats or combinations thereof, to which the resin is added by injection (so-called resin transfer moulding or resin injection moulding), as well as of pre-impregnated fibres, fabrics or mats.
  • the shell parts can also be made by thermoforming of a thermoplastic com­posite plate.
  • the shell parts are glued or welded and/or mechanically fastened to the gliding element (4); this depends on, among other things, the type of matrix material used (thermosetting or thermoplastic).
  • the space between the shell parts Fig.
  • the sole sup­port (Fig. 1, 2) with the sole plate (Fig. 1, 5) and the heel support (Fig. 1, 6) with the heel plate (Fig. 1, 7) is glued, welded or mecha­nically fastened to the tube. On these, the skate shoe is mounted.
  • the tube (3) is moulded in one piece, around a removable or non-removable core (Fig. 3, 8).
  • the fibres, fabrics or mats are applied to the core at desired angles.
  • the matrix is injected and polymerized. It is also possible to use semi-manufactures for this purpose.
  • the tube can be made by a thermoforming process.
  • the space in the tube (Fig. 2, 11) can be filled with foam or with a pre-formed foam part.
  • the tube is shortened to the required length and closed or rounded off (as in Fig. 1).
  • the sole support (Fig. 1, 2) with the sole plate (Fig. 1, 5) and the heel support (Fig. 1, 6) with the heel plate (Fig. 1, 7) are glued, welded or mechanically fastened to the tube. On these, the skate shoe is mounted.
  • the tube (moulded part 9) is continuously produced by means of pultrusion or thermoforming (so-called roll-forming).
  • pultrusion the fibres are pulled through a mould together with mats or fabrics.
  • the thermosetting or thermoplastic resin can be added by injection or via a resin bath. After polymerization in the mould, the tube is shortened to the required length.
  • Thermoforming takes place by passing a thermoplastic composite which has been heated to above the softening point through a mould or pre-heated rolls. The thermoplastic cools off in the mould or between the rolls and becomes stable, after which it can be shortened.
  • the space inside the tube (Fig. 2, 11) can be filled with foam or with a pre-formed foam part.
  • the ends of the tube are closed and the sole support (Fig. 1,2) with the sole plate (Fig. 1,5) and the heel support (Fig. 1,6) with the heel plate (Fig. 1,7) are glued, welded or mechanically fastened to the tube. On these, the skate shoe is mounted.
  • the gliding element is made of steel with a coefficient of thermal extension of +12 . 10 ⁇ 6 K ⁇ 1.
  • the skate body is made of a carbon-fibre reinforced epoxy resin. 77% of the fibres are placed in the mould at angles of +38 to 40 ⁇ and - 38 to 40 ⁇ and 23% at an angle of 0 ⁇ , the fibre content relative to the total composite being 48 wt.%.
  • the gliding element is made of silicon nitride ceramic material with a coefficient of extension of +3.2 . 10 ⁇ 6 K ⁇ 1.
  • the skate body is made of a carbon-fibre reinforced epoxy resin. 78 % of the fibres are placed in the mould at an angle of 90 ⁇ , and 22% at an angle of 0 ⁇ , the fibre content relative to the total composite being 55 vol.%.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Saccharide Compounds (AREA)
EP19880202808 1987-12-14 1988-12-08 Skate Withdrawn EP0321026A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8703017 1987-12-14
NL8703017A NL8703017A (nl) 1987-12-14 1987-12-14 Composiet schaatslichaam, alsmede werkwijzen voor het maken van het composiet schaatslichaam.

Publications (2)

Publication Number Publication Date
EP0321026A2 true EP0321026A2 (de) 1989-06-21
EP0321026A3 EP0321026A3 (en) 1990-10-17

Family

ID=19851088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880202808 Withdrawn EP0321026A3 (en) 1987-12-14 1988-12-08 Skate

Country Status (4)

Country Link
EP (1) EP0321026A3 (de)
JP (1) JPH01236076A (de)
NL (1) NL8703017A (de)
NO (1) NO885535L (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9000088A (nl) * 1990-01-12 1991-08-01 Jacob Havekotte Schaatsijzerhouder.
FR2750883A1 (fr) * 1996-07-12 1998-01-16 Salomon Sa Article de glisse, notamment patin a roues en ligne comportant un chassis a corps creux
GB2315663A (en) * 1996-07-30 1998-02-11 Fii Footwear Management Ltd Footwear item
EP0876833A3 (de) * 1997-03-10 1999-08-11 Bauer Italia S.p.A. Rollschuh- oder Eislaufschuhstruktur und Verfahren zu ihrer Herstellung
WO2000030723A1 (en) * 1998-11-24 2000-06-02 K-2 Corporation Foam core in-line skate frame
US6446984B2 (en) 1998-11-24 2002-09-10 K-2 Corporation Foam core skate frame with embedded insert
US6851681B2 (en) 1998-11-24 2005-02-08 K-2 Corporation Skate frame with cap construction

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023051594A1 (zh) * 2021-09-30 2023-04-06 湖南华曙高科技股份有限公司 冰刀刀管、冰鞋和冰刀刀管制造工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237160A1 (en) * 1973-07-13 1975-02-07 Chausson Usines Sa Multi tubular finned radiator for vehicle engine coolant - comprising metal tube between plastic reservoir manifolds of matched thermal expansion
US4053168A (en) * 1975-10-10 1977-10-11 Ontario Tool Design Inc. Skate and method of producing same
WO1987005818A1 (en) * 1986-03-26 1987-10-08 Jan Bratland Skate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237160A1 (en) * 1973-07-13 1975-02-07 Chausson Usines Sa Multi tubular finned radiator for vehicle engine coolant - comprising metal tube between plastic reservoir manifolds of matched thermal expansion
US4053168A (en) * 1975-10-10 1977-10-11 Ontario Tool Design Inc. Skate and method of producing same
WO1987005818A1 (en) * 1986-03-26 1987-10-08 Jan Bratland Skate

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9000088A (nl) * 1990-01-12 1991-08-01 Jacob Havekotte Schaatsijzerhouder.
FR2750883A1 (fr) * 1996-07-12 1998-01-16 Salomon Sa Article de glisse, notamment patin a roues en ligne comportant un chassis a corps creux
WO1998002217A1 (fr) * 1996-07-12 1998-01-22 Salomon S.A. Article de glisse, notamment patin a roues en ligne comportant un chassis a corps creux
US6328317B1 (en) 1996-07-12 2001-12-11 Salomon S.A. Article of gliding equipment, such as an in-line roller skate, having a hollow body frame
GB2315663A (en) * 1996-07-30 1998-02-11 Fii Footwear Management Ltd Footwear item
EP0876833A3 (de) * 1997-03-10 1999-08-11 Bauer Italia S.p.A. Rollschuh- oder Eislaufschuhstruktur und Verfahren zu ihrer Herstellung
WO2000030723A1 (en) * 1998-11-24 2000-06-02 K-2 Corporation Foam core in-line skate frame
US6422577B2 (en) 1998-11-24 2002-07-23 K-2 Corporation Foam core in-line skate frame
US6446984B2 (en) 1998-11-24 2002-09-10 K-2 Corporation Foam core skate frame with embedded insert
US6648344B2 (en) 1998-11-24 2003-11-18 K-2 Corporation Foam core in-line skate frame
US6851681B2 (en) 1998-11-24 2005-02-08 K-2 Corporation Skate frame with cap construction
US7214337B2 (en) 1998-11-24 2007-05-08 K-2 Corporation Foam core in-line skate frame

Also Published As

Publication number Publication date
NL8703017A (nl) 1989-07-03
EP0321026A3 (en) 1990-10-17
NO885535D0 (no) 1988-12-13
NO885535L (no) 1989-06-15
JPH01236076A (ja) 1989-09-20

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