WO2008104191A1 - Patin à lame rainurée - Google Patents

Patin à lame rainurée Download PDF

Info

Publication number
WO2008104191A1
WO2008104191A1 PCT/EP2007/001671 EP2007001671W WO2008104191A1 WO 2008104191 A1 WO2008104191 A1 WO 2008104191A1 EP 2007001671 W EP2007001671 W EP 2007001671W WO 2008104191 A1 WO2008104191 A1 WO 2008104191A1
Authority
WO
WIPO (PCT)
Prior art keywords
skate
blade
frame
grooves
groove
Prior art date
Application number
PCT/EP2007/001671
Other languages
English (en)
Inventor
Jacobus Lambertus Van Merksteijn
Original Assignee
Kick Off Ltd.
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 Kick Off Ltd. filed Critical Kick Off Ltd.
Priority to PCT/EP2007/001671 priority Critical patent/WO2008104191A1/fr
Publication of WO2008104191A1 publication Critical patent/WO2008104191A1/fr

Links

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
    • A63C1/30—Skates with special blades
    • A63C1/32—Special constructions of the simple blade

Definitions

  • the invention relates to a skate comprising:
  • a foot holder like for example a shoe, arranged to the frame.
  • Such skates are known for centuries.
  • a recent breakthrough in skates is the development of a klap skate.
  • Such a klap skate has a blade which is hingedly arranged to the frame and enables the skater to keep longer contact to the ice when making a skate stroke. This has increased the efficiency of a skater and enables shorter lap times.
  • the most grip of a skate is achieved when the blade illustrated relative to the ice.
  • the blade is not always under the optimal angle relative to the ice such that a skater can not transfer all its power generated in the skate stroke to the ice.
  • a skate according to the invention which is characterised in that the elongate blade has a bottom surface, which surface is substantially semi- cylindrical and comprises a number of parallel abutting grooves extending in the longitudinal direction of the elongate blade and having a cross-section shaped as a cirkelsegment .
  • each concave surface of a groove is provided with helical parallel secondary grooves.
  • On an ice surface generally a small layer of water present, which provides the most optimum conditions for speed skating. However, this small layer of water provides also friction, as the blade of the skate has to cut through this layer of water.
  • the grooves in the semi-cylindrical surface By providing the grooves in the semi-cylindrical surface, small discharge channels are provided through which water can be guided along the skate.
  • the secondary helical grooves force the water in a channel to rotate and to generate a tornado within the channel. Such a tornado has less friction in the channels than a general water stream in the channel. Therefore the addition of secondary helical grooves reduces the overall friction for a skate according to the invention.
  • at least one of the grooves is curved in transfers direction. Preferably it regards to a groove which is in contact with the ice when the skate is under an angle. By providing a curve, the skater is assisted in making a turn on the ice.
  • the radius of the curvature is about 20m-50m.
  • each groove is provided with a texture having peaks extending across the right of the groove, said peaks causing a fluid passing the peaks to glide.
  • This gliding principal is comparable to the gliding of a speedboat over the tops of the water when the speedboat is at high speed.
  • Figure 1 shows a side view of an embodiment of a skate according to the invention.
  • Figure 2 shows a front view of the blade of the skate according to figure 1.
  • Figure 3 shows a part of the blade of figure 2 in enlarged scale.
  • Figure 4 shows a bottom view of the blade according to figure 2.
  • Figure 5 shows a second embodiment of a blade for a skate according to the invention.
  • FIG. 1 shows a perspective view of a skate 1 according to the invention.
  • This skate 1 has a shoe 2 which is arranged on a frame 3, 4.
  • Part 3 to which the shoe 2 is mounted is hingedly connected to the frame part 4. This provides for a klap skate.
  • the frame 3, 4 is arranged to a ceramic blade 5.
  • FIG 2 the attachment of the frame 4 to the ceramic blade 5 is shown in cross-section.
  • the ceramic blade has on either side a groove 6 in which two ribs 7 of the frame part 4 project.
  • Figure 3 shows the bottom side of the blade 5 in more detail.
  • the bottom side of the blade has a semi-cylindrical surface having a radius R.
  • On the surface a number of abutting grooves 8 are arranged.
  • the grooves 8 form linear edges 9, which are comparable to knife edges. So independent of the angle of the blade 5 relative to the ice, always a knife edge 9 will be in contact with the ice.
  • a bottom view of the blade 5 is shown.
  • each of the grooves 8 have secondary grooves 10, which secondary grooves 10 are helical. These helical grooves will force the fluid passing along the groove 8 into a rotating fluid, which is also called a vortex. This will minimise the drag of the fluid onto the blade 5.
  • Figure 5 shows a second embodiment of a blade 15 according to the invention.
  • Figure 5 shows also a bottom view of such a blade 15 and grooves 16 are visible.
  • the main groove has secondary grooves 17 which are arranged to provide vortexes within the groove 16.
  • a tile like arrangement of surfaces 18 is provided at the bottom of the groove. These tile like surfaces 18 provide peaks, like peaks on a sea surface, and the fluid passing along the groove 16 will glide over these peaks provided by the surfaces 18. This further reduces the drag of the fluid in the groove 16.
  • the speed of the fluid is increased such that the fluid will glide into the groove 16 at a relative low speed of the blade relative to the ice.
  • This gliding action reduces the drag of the blade relative to the ice, which in combination with the number of knife edges 9 provide for a skate with low friction and optimised grip.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne un patin comprenant: - un cadre; - une lame allongée montée sur le cadre; et - un support de pied, comme une chaussure, par exemple, disposé sur le cadre. La lame allongée possède une surface inférieure. Celle-ci est sensiblement semi-cylindrique et comprend plusieurs rainures adjacentes, parallèles, qui s'étendent dans le sens de la longueur de la lame allongée et qui ont une forme de demi-cercle en section transversale.
PCT/EP2007/001671 2007-02-27 2007-02-27 Patin à lame rainurée WO2008104191A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/001671 WO2008104191A1 (fr) 2007-02-27 2007-02-27 Patin à lame rainurée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/001671 WO2008104191A1 (fr) 2007-02-27 2007-02-27 Patin à lame rainurée

Publications (1)

Publication Number Publication Date
WO2008104191A1 true WO2008104191A1 (fr) 2008-09-04

Family

ID=38650161

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/001671 WO2008104191A1 (fr) 2007-02-27 2007-02-27 Patin à lame rainurée

Country Status (1)

Country Link
WO (1) WO2008104191A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58900C (de) * A. BÖHM in Boskowitz, Mähren Schlittschuh-Laufeisen mit Mittelrippe auf der Lauffläche
US1886650A (en) * 1932-01-25 1932-11-08 Willard J Davies Skate
DE3440313A1 (de) * 1984-11-05 1986-05-15 Theodor 7077 Alfdorf Kinkel Schlittschuhe
WO1994016782A1 (fr) * 1993-01-29 1994-08-04 Örebroskenan Aktiebolag Lame de patin a glace
WO1995015199A1 (fr) * 1993-12-03 1995-06-08 Örebroskenan Aktiebolag Lame de patin a glace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58900C (de) * A. BÖHM in Boskowitz, Mähren Schlittschuh-Laufeisen mit Mittelrippe auf der Lauffläche
US1886650A (en) * 1932-01-25 1932-11-08 Willard J Davies Skate
DE3440313A1 (de) * 1984-11-05 1986-05-15 Theodor 7077 Alfdorf Kinkel Schlittschuhe
WO1994016782A1 (fr) * 1993-01-29 1994-08-04 Örebroskenan Aktiebolag Lame de patin a glace
WO1995015199A1 (fr) * 1993-12-03 1995-06-08 Örebroskenan Aktiebolag Lame de patin a glace

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