WO2009068744A1 - Anti-skid stud for a tyre - Google Patents

Anti-skid stud for a tyre Download PDF

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Publication number
WO2009068744A1
WO2009068744A1 PCT/FI2008/050686 FI2008050686W WO2009068744A1 WO 2009068744 A1 WO2009068744 A1 WO 2009068744A1 FI 2008050686 W FI2008050686 W FI 2008050686W WO 2009068744 A1 WO2009068744 A1 WO 2009068744A1
Authority
WO
WIPO (PCT)
Prior art keywords
stud
hard
outer end
tip
metal piece
Prior art date
Application number
PCT/FI2008/050686
Other languages
French (fr)
Inventor
Marko Moilanen
Original Assignee
Sancus Oy
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
Priority claimed from FI20070901A external-priority patent/FI125790B/en
Priority claimed from FI20070900A external-priority patent/FI125056B/en
Priority claimed from FI20070902A external-priority patent/FI125057B/en
Application filed by Sancus Oy filed Critical Sancus Oy
Publication of WO2009068744A1 publication Critical patent/WO2009068744A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
    • B60C11/1643—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile with special shape of the plug-body portion, i.e. not cylindrical
    • B60C11/165—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile with special shape of the plug-body portion, i.e. not cylindrical conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
    • B60C11/1643—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile with special shape of the plug-body portion, i.e. not cylindrical
    • B60C11/1668—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile with special shape of the plug-body portion, i.e. not cylindrical with an additional collar

Definitions

  • the object of this invention is an anti-skid stud of a vehicle.
  • the object of this invention is the hard-material tip of an anti-skid stud of a vehicle, which tip comprises a top end extending outwards from the tire and a bottom end fitted onto the body of the anti-skid stud.
  • Anti-skid studs to prevent skidding and thereby to improve driving safety in slippery conditions, especially in winter, are used in the inflatable tires of vehicles, such as automobiles.
  • the tires of an automobile comprise a wearing layer and a rolling surface.
  • Anti-skid studs (hereinafter studs) are installed in the wearing layer of the tire with special installation tools into recesses (cavities) pre-manufactured in the tire.
  • the studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire.
  • the inner end of the stud comprises a base flange
  • the outer end comprises an upper dome and between them can be a neck part that is narrower than both the upper dome and the base flange.
  • the upper dome in prior-art solutions extends with constant thickness from the base flange to the outer end.
  • the base flange is usually round but it can also be four-sided.
  • the outer end of the stud comprises a hard-ceramic tip or a hard- metal tip of considerably harder material than the rest of the stud, which tip is fitted into the cavity in the upper dome of the stud, and which is of constant cross-sectional thickness and round, square or triangular in its cross-section (see e.g. publications FI-B-114692 and EP-A2-1 798 068).
  • the hard-metal tip of the stud has for a long time only been round. The reason for this has been the manufacturing method and the material of the hard-metal tip. Apart from development of the manufacturing method, the durability of the solution in use has also been a consideration in seeking other shapes.
  • the Fl publication in question, FI-B-114692 also discloses a tool for installing an anti-skid stud, with which the tire of a vehicle can be studded in an oriented manner such that some pre-defined direction or dimension of the studs is obtained at each desired angle in relation to the rolling plane of the tire.
  • the body of the stud can be provided with a notch on the side, as is presented in publication EP-A2-1 798 069.
  • Publication SE-C2-523 713 presents a stud in which the hard-metal piece is a conical wedge shape, tapering as it progresses towards the base.
  • a stud in which the hard-metal part is polygonal or castellated in its cross-section is also known from the publication in question.
  • the purpose of this invention is to eliminate the drawbacks of prior art and to achieve an entirely new kind of anti-skid stud of a vehicle tire, with which particularly the durability and grip of the studs are improved.
  • the stud is four-sided or pentagonal in respect of its body part and preferably tapering upwards or downwards in respect of the dome part.
  • the safety of wintertime driving is improved with the new type of shaping of the stud.
  • the hard-metal piece and the bottom flange of the studs are four-sided or round, and the studs are disposed in a diamond shape with respect to the direction of travel, in which case the grip on ice improves considerably in all directions.
  • the purpose of this invention is to eliminate the drawbacks of prior art and to achieve an entirely new kind of oriented anti-skid stud of a vehicle tire, with which particularly the road penetration properties of the studs are improved.
  • the hard-metal piece narrows evenly upwards in the top end.
  • the shape of the top end can be a cone, a pyramid, or a truncated cone or pyramid.
  • the pyramid model tip can be used in areas where the point force of the stud is not measured. In icy conditions the penetration of a sharp tip is best.
  • the truncated pyramid shape which owing to its tapered shape, penetrates ice well but as a consequence of the wide cross-section of its root produces a large resistance once penetration is achieved. With a small increase in the angle of taper a significant advantage in penetration is achieved without losing the benefit bestowed by width.
  • the bottom end can be a conically-shaped or pyramid-shaped or of a corresponding shape that tapers downwards in a corresponding way.
  • the bottom end can also be straight.
  • the purpose of this invention is to eliminate the drawbacks of prior art and to achieve an entirely new kind of oriented anti-skid stud of a vehicle tire.
  • the hard-metal piece of the stud is shaped in terms of its cross-section as a half moon, a crescent or a rectangle that is concave on two opposite sides.
  • Figs. 101 - 108 present different embodiments of the stud and the hard-metal piece according to the invention
  • Figs. 111 , 112, 113a, 113b, 11,4 and 115 present different embodiments of the stud and the hard-metal piece according to the invention.
  • Figs. 109 - 110 present a stud according to the invention. Description of preferred embodiments of the invention
  • Fig. 101 presents an anti-skid stud 100 according to the invention.
  • the studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire.
  • the inner end of the stud comprises a base flange 101
  • the outer end comprises an upper dome 102 and between them can be a neck part 103 that is narrower than both the upper dome and the base flange.
  • the outer end of the stud comprises a hard-metal tip 104 of considerably harder material than the rest of the stud and square-shaped at its top end 105, which tip is fitted into the cavity in the upper dome of the stud.
  • the upper dome can comprise a notch on its side for orientation.
  • the stud is four-sided or pentagonal in respect of its body part and preferably tapering upwards or downwards in respect of the dome (upper dome 107 and 108, Figs. 103 and
  • a narrow top part improves retention.
  • a broad top part improves road contact.
  • the safety of wintertime driving is improved with the new type of shaping of the stud.
  • the hard-metal piece and the bottom flange of the studs are four-sided, and the studs are disposed in a diamond shape with respect to the direction of travel, in which case the grip on ice improves considerably in all directions.
  • the hard-metal piece of the stud can also at its top end be a cone, or a truncated cone or pyramid.
  • the pyramid model tip can be used in areas where the point force of the stud must be extremely great.
  • the inclination can be very small or large, and the range can be 0.1 - 70 degrees.
  • the upper dome 106, 107, 108 can also be round according to Fig. 102 and tapering in either direction (Figs. 105, 106), likewise the base flange 109 - 112 can be round according to Figs. 105 - 108.
  • Fig. 111 presents an anti-skid stud 100 according to the invention.
  • the studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire.
  • the inner end of the stud comprises a base flange 101, the outer end comprises an upper dome 102 and between them can be a neck part 103 that is narrower than both the upper dome and the base flange.
  • the outer end of the stud comprises a hard-metal tip 104 of considerably harder material than the rest of the stud and pyramid-shaped at its top end 105, which tip is fitted into the cavity in the upper dome of the stud.
  • the upper dome comprises a notch 106 on its side for orientation.
  • the hard-metal piece of the stud can also at its top end be a cone, or a truncated cone or pyramid.
  • the pyramid model tip can be used in areas where the point force of the stud must be. extremely great.
  • Figs. 112 and 113a present the hard-metal pieces 107 and 108, in which the top end 109, 110 is a pyramid or truncated pyramid, and in which the bottom end 111 , 1 12 of the hard-metal piece can be a downward tapering pyramid or truncated pyramid.
  • Fig. 113b presents a structure corresponding to
  • Figs. 114 and 115 further present a stud 120, in which the hard- metal end 121 " is rectangular in cross-sectional shape, and in which the opposite sides 123-126 of the top end 122 are thus of equal length and in which the opposite sides taper at a different angle ⁇ , ⁇ in which case a top end of a rectangular pyramid shape is obtained.
  • the inclination can also be the same in both.
  • the inclination can be very small or large, and the range can be 0.1 - 70 degrees. Also other tapering polygons that differ from a pyramid can be appropriate.
  • Fig. 109 presents an anti-skid stud 100 according to the invention.
  • the studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire.
  • the inner end of the stud comprises a base flange 101
  • the outer end comprises an upper dome 102 and between them can be a neck part 103 that is narrower than both the upper dome and the base flange.
  • the outer end of the stud comprises a hard-metal tip 104 of considerably harder material than the rest of the stud and half-moon shaped at its top end 105, which tip is fitted into the cavity in the upper dome of the stud.
  • the upper dome comprises a notch 106 on its side for orientation.
  • the hard-metal piece of the stud is shaped in its cross-section as a half moon, a crescent (107, Fig. 110) or as a half-moon that is concave on two opposite sides.
  • the orientation is such that in the semicircular shape the stud is aligned so that the round edge faces forwards. In this way good penetration into the ice is obtained as the wheel rotates forwards.
  • the top end of the hard-metal tip can be upward tapering.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

Anti-skid stud (100) of a vehicle, which stud comprises an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire, and the inner end of which stud comprises a base flange (101) and the outer end comprises an upper dome (102), and the outer end of which stud comprises a tip (104) of considerably harder material than the rest of the stud, and in which stud the upper dome is many-sided.

Description

ANTI-SKID STUD FOR A TYRE
Field of technology and prior art
The object of this invention is an anti-skid stud of a vehicle.
The object of this invention is the hard-material tip of an anti-skid stud of a vehicle, which tip comprises a top end extending outwards from the tire and a bottom end fitted onto the body of the anti-skid stud.
Anti-skid studs, to prevent skidding and thereby to improve driving safety in slippery conditions, especially in winter, are used in the inflatable tires of vehicles, such as automobiles.
The tires of an automobile comprise a wearing layer and a rolling surface. Anti-skid studs (hereinafter studs) are installed in the wearing layer of the tire with special installation tools into recesses (cavities) pre-manufactured in the tire.
The studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire. The inner end of the stud comprises a base flange, the outer end comprises an upper dome and between them can be a neck part that is narrower than both the upper dome and the base flange. In a case where the stud does not comprise a neck part, the upper dome in prior-art solutions extends with constant thickness from the base flange to the outer end. When the stud is installed in the wearing layer its top flange is disposed in the wearing layer deeper from the rolling surface and the upper dome is disposed closer to the rolling surface.
The base flange is usually round but it can also be four-sided.
The outer end of the stud comprises a hard-ceramic tip or a hard- metal tip of considerably harder material than the rest of the stud, which tip is fitted into the cavity in the upper dome of the stud, and which is of constant cross-sectional thickness and round, square or triangular in its cross-section (see e.g. publications FI-B-114692 and EP-A2-1 798 068). The hard-metal tip of the stud has for a long time only been round. The reason for this has been the manufacturing method and the material of the hard-metal tip. Apart from development of the manufacturing method, the durability of the solution in use has also been a consideration in seeking other shapes.
The Fl publication in question, FI-B-114692, also discloses a tool for installing an anti-skid stud, with which the tire of a vehicle can be studded in an oriented manner such that some pre-defined direction or dimension of the studs is obtained at each desired angle in relation to the rolling plane of the tire. For the purpose of orientation, the body of the stud can be provided with a notch on the side, as is presented in publication EP-A2-1 798 069. Publication SE-C2-523 713 presents a stud in which the hard-metal piece is a conical wedge shape, tapering as it progresses towards the base. A stud in which the hard-metal part is polygonal or castellated in its cross-section is also known from the publication in question.
Summary of the invention
The purpose of this invention is to eliminate the drawbacks of prior art and to achieve an entirely new kind of anti-skid stud of a vehicle tire, with which particularly the durability and grip of the studs are improved. In the solution according to the invention the stud is four-sided or pentagonal in respect of its body part and preferably tapering upwards or downwards in respect of the dome part.
The safety of wintertime driving is improved with the new type of shaping of the stud. The hard-metal piece and the bottom flange of the studs are four-sided or round, and the studs are disposed in a diamond shape with respect to the direction of travel, in which case the grip on ice improves considerably in all directions.
The characteristic features of the solution according to the invention are described in detail in the independent claims and the preferred embodiments in the non-independent claims.
The purpose of this invention is to eliminate the drawbacks of prior art and to achieve an entirely new kind of oriented anti-skid stud of a vehicle tire, with which particularly the road penetration properties of the studs are improved.
In the solution according to the invention the hard-metal piece narrows evenly upwards in the top end.
The shape of the top end can be a cone, a pyramid, or a truncated cone or pyramid. The pyramid model tip can be used in areas where the point force of the stud is not measured. In icy conditions the penetration of a sharp tip is best. The truncated pyramid shape, which owing to its tapered shape, penetrates ice well but as a consequence of the wide cross-section of its root produces a large resistance once penetration is achieved. With a small increase in the angle of taper a significant advantage in penetration is achieved without losing the benefit bestowed by width.
Also the bottom end can be a conically-shaped or pyramid-shaped or of a corresponding shape that tapers downwards in a corresponding way. The bottom end can also be straight.
The purpose of this invention is to eliminate the drawbacks of prior art and to achieve an entirely new kind of oriented anti-skid stud of a vehicle tire. In the solution according to the invention the hard-metal piece of the stud is shaped in terms of its cross-section as a half moon, a crescent or a rectangle that is concave on two opposite sides.
In this way it is possible to significantly improve the operation of the stud compared to prior art, when e.g. in the semicircular shape the stud is aligned so that the round edge faces forwards. In this way good penetration into the ice is obtained as the wheel rotates forwards. The straight trailing edge, for its part, gives maximal braking grip.
Semicircular with cavity round with cavities on both sides.
An even distribution must be aimed for in respect of the lateral and longitudinal grip so that a good level of grip is ensured in all driving situations. When the aim is a better result in lateral grip it is an advantage if the shape of the hard metal can be configured in that direction that more surface area is obtained also in the lateral direction.
Short description of the drawings
In the following, the invention will be described in more detail by the aid of some embodiments with reference to the attached drawings, wherein
Figs. 101 - 108 present different embodiments of the stud and the hard-metal piece according to the invention,
Figs. 111 , 112, 113a, 113b, 11,4 and 115 present different embodiments of the stud and the hard-metal piece according to the invention, and
Figs. 109 - 110 present a stud according to the invention. Description of preferred embodiments of the invention
Fig. 101 presents an anti-skid stud 100 according to the invention. The studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire. The inner end of the stud comprises a base flange 101 , the outer end comprises an upper dome 102 and between them can be a neck part 103 that is narrower than both the upper dome and the base flange.
The outer end of the stud comprises a hard-metal tip 104 of considerably harder material than the rest of the stud and square-shaped at its top end 105, which tip is fitted into the cavity in the upper dome of the stud. The upper dome can comprise a notch on its side for orientation.
In the solution according to the invention the stud is four-sided or pentagonal in respect of its body part and preferably tapering upwards or downwards in respect of the dome (upper dome 107 and 108, Figs. 103 and
104). A narrow top part improves retention. A broad top part improves road contact.
The safety of wintertime driving is improved with the new type of shaping of the stud. The hard-metal piece and the bottom flange of the studs are four-sided, and the studs are disposed in a diamond shape with respect to the direction of travel, in which case the grip on ice improves considerably in all directions.
In the solution according to the invention the hard-metal piece of the stud can also at its top end be a cone, or a truncated cone or pyramid. The pyramid model tip can be used in areas where the point force of the stud must be extremely great.
The inclination can be very small or large, and the range can be 0.1 - 70 degrees.
Also other tapering polygons that differ from a pyramid can be appropriate. The upper dome 106, 107, 108 can also be round according to Fig. 102 and tapering in either direction (Figs. 105, 106), likewise the base flange 109 - 112 can be round according to Figs. 105 - 108.
Description of second preferred embodiments of the invention
Fig. 111 presents an anti-skid stud 100 according to the invention. The studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire. The inner end of the stud comprises a base flange 101, the outer end comprises an upper dome 102 and between them can be a neck part 103 that is narrower than both the upper dome and the base flange.
The outer end of the stud comprises a hard-metal tip 104 of considerably harder material than the rest of the stud and pyramid-shaped at its top end 105, which tip is fitted into the cavity in the upper dome of the stud. The upper dome comprises a notch 106 on its side for orientation.
In the solution according to the invention the hard-metal piece of the stud can also at its top end be a cone, or a truncated cone or pyramid. The pyramid model tip can be used in areas where the point force of the stud must be. extremely great.
Figs. 112 and 113a present the hard-metal pieces 107 and 108, in which the top end 109, 110 is a pyramid or truncated pyramid, and in which the bottom end 111 , 1 12 of the hard-metal piece can be a downward tapering pyramid or truncated pyramid. Fig. 113b presents a structure corresponding to
Fig. 113a, but the bottom end 113 is straight.
Figs. 114 and 115 further present a stud 120, in which the hard- metal end 121" is rectangular in cross-sectional shape, and in which the opposite sides 123-126 of the top end 122 are thus of equal length and in which the opposite sides taper at a different angle α, β in which case a top end of a rectangular pyramid shape is obtained. The inclination can also be the same in both.
The inclination can be very small or large, and the range can be 0.1 - 70 degrees. Also other tapering polygons that differ from a pyramid can be appropriate.
Description of third preferred embodiments of the invention
Fig. 109 presents an anti-skid stud 100 according to the invention.
The studs comprise an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire. The inner end of the stud comprises a base flange 101 , the outer end comprises an upper dome 102 and between them can be a neck part 103 that is narrower than both the upper dome and the base flange.
The outer end of the stud comprises a hard-metal tip 104 of considerably harder material than the rest of the stud and half-moon shaped at its top end 105, which tip is fitted into the cavity in the upper dome of the stud. The upper dome comprises a notch 106 on its side for orientation.
In the solution according to the invention the hard-metal piece of the stud is shaped in its cross-section as a half moon, a crescent (107, Fig. 110) or as a half-moon that is concave on two opposite sides.
The orientation is such that in the semicircular shape the stud is aligned so that the round edge faces forwards. In this way good penetration into the ice is obtained as the wheel rotates forwards. The straight trailing edge, for its part, gives maximal braking grip. The top end of the hard-metal tip can be upward tapering.
It is obvious to the person skilled in the art that the different embodiments of the invention are not limited solely to the example described above, but that they may be varied within the scope of the claims presented below.

Claims

1. Anti-skid stud (100) of a vehicle, which stud comprises an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire, and the inner end of which stud comprises a base flange (101) and the outer end comprises an upper dome (101), and the outer end of which stud comprises a tip of considerably harder material than the rest of the stud, c h a r a c te r i ze d in that the upper dome is many-sided, preferably four-sided or five-sided.
2. Stud according to claim 1, c h a racte rize d in that the stud body tapers upwards in respect of the dome.
3. Stud according to claim 1, c h a racte rized in that the stud body tapers downwards in respect of the dome.
4. Stud according to claims 1-3, c h a ra cte ri z e d in that the hard-metal piece of the studs is square-shaped or polygonal and the bottom flange is four-sided, five-sided, and/or round.
5. Stud according to claims 1-3, c h a ra cte r i z e d in that the hard-metal piece of the studs is square-shaped or and the stud is aligned and can be fitted as a diamond-shape with respect to the direction of travel.
6. Stud according to any of the previous claims, c h a racte rized in that the hard-metal piece (104) of the stud tapers evenly in the top end at least essentially for the whole top end.
7. Stud according to any of the previous claims, characterized in that the bottom end (111 , 112) of the hard- metal piece tapers downwards.
8. Stud according to any of the previous claims, cha racte rized in that the inclination is 0.1 - 70 degrees.
9. Anti-skid stud (101) of a vehicle, which stud comprises an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire, and the inner end of which stud comprises a base flange (102) and the outer end comprises an upper dome, and the outer end of which stud comprises a tip of considerably harder material than the rest of the stud, c h a racterized in that the upper dome (106) is round and tapers evenly.
10. Anti-skid stud (100) of a vehicle, which stud comprises an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire, and the inner end of which stud comprises a base flange (101) and the outer end comprises an upper dome (102), and the outer end of which stud comprises a tip of considerably harder material than the rest of the stud, which tip can be fitted into the cavity in the upper dome of the stud, and which tip comprises a top end and a bottom end fitted into the stud body, c ha racterized in that the hard-metal piece (104) of the stud tapers evenly in the top end at least essentially for the whole top end.
11. Stud according to claim 10, c h a ra c te ri z e d in that the top end of the hard-metal piece is of conical or truncated conical shape.
12. Stud according to claim 10, c h a r a c te r i z e d in that the top end of the hard-metal piece is of pyramidal or truncated pyramidal or corresponding polygonal shape.
13. Stud according to claim 10, c h a ra c te ri z e d in that the cross-section of the hard-metal piece is a rectangle or a parallelogram.
14. Stud according to any of claims 10- 13 above, c h a r a c t e r i z e d in that the stud is oriented, and for this purpose the body comprises a notch arrangement.
15. Stud according to any of claims 10-14 above, c h a r a c t e r i z e d in that the bottom end (111, 112) of the hard-metal piece tapers downwards.
16. Stud according to any of claims 10- 15 above, c h aracte rized in that the bottom end (111, 112) of the hard- metal piece is straight.
17. Stud according to any of claims 10- 17 above, c h a racterized in that the inclination is 0.1 - 70 degrees.
18. Stud according to any of claims 10- 18 above, c h a r a c t e r i z e d in that the hard-metal end (121) is of rectangular cross-sectional shape, and in which the opposite sides taper at a different inclination.
19. Stud according to any of claims 10- 19 above, c h a r a c t e r i z e d in that the hard-metal end (121) is of rectangular cross-sectional shape, and in which opposite sides taper at the same inclination.
20. Anti-skid stud (100) of a vehicle, which stud comprises an outer end extending towards the rolling surface and an inner end to be placed into the cavity of the tire, and the inner end of which stud comprises a base flange (101) and the outer end comprises an upper dome (102), and the outer end of which stud comprises a tip of considerably harder material than the rest of the stud, which tip can be fitted into the cavity in the upper dome of the stud, and which tip comprises a top end and a bottom end fitted into the stud body, c h a racterized in that the top end of the hard-metal piece is shaped in respect of its cross-section as a semicircle, a half moon, a crescent or a rectangle that is concave on two opposite sides.
21. Stud according to claim 20, c h a ra c te r i z e d in that the stud is oriented.
22. Stud according to claim 20 or 21. c haracte rize d in that in the semicircular shape the stud is aligned so that the round edge faces forwards.
23. Stud according to claim 20, 21 or 22, c h a r a c t e r i z e d in that the shape is a semicircle, the front edge of which is hardened.
24. Stud according to claim 20, 21 or 22, c h a r a c t e r i z e d in that the top end of the hard-metal tip tapers upwards.
RECTIFIED SHEET (RULE 91) ISA/EP
PCT/FI2008/050686 2007-11-26 2008-11-26 Anti-skid stud for a tyre WO2009068744A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
FI20070902 2007-11-26
FI20070901A FI125790B (en) 2007-11-26 2007-11-26 Tip of a sludge hardener for a vehicle
FI20070900A FI125056B (en) 2007-11-26 2007-11-26 Anti-slip stud for vehicles
FI20070901 2007-11-26
FI20070900 2007-11-26
FI20070902A FI125057B (en) 2007-11-26 2007-11-26 Vehicle slipper

Publications (1)

Publication Number Publication Date
WO2009068744A1 true WO2009068744A1 (en) 2009-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2008/050686 WO2009068744A1 (en) 2007-11-26 2008-11-26 Anti-skid stud for a tyre

Country Status (1)

Country Link
WO (1) WO2009068744A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012117962A1 (en) 2011-03-01 2012-09-07 株式会社ブリヂストン Spike for tire
KR101198153B1 (en) 2010-11-29 2012-11-12 한국타이어월드와이드 주식회사 Stud for snow tire
WO2014122570A1 (en) 2013-02-06 2014-08-14 Pirelli Tyre S.P.A. A studded tyre and a method for improving the performance of a studded tyre
CN105392639A (en) * 2013-07-24 2016-03-09 横滨橡胶株式会社 Stud pin, and pneumatic tire
WO2017102115A1 (en) 2015-12-15 2017-06-22 Continental Reifen Deutschland Gmbh Pneumatic vehicle tire
RU2623320C2 (en) * 2013-01-25 2017-06-23 Нокиан Ренкаат Оий Vehicle tire and antislip stud inserted in vehicle tire
EP2540527B1 (en) * 2011-06-28 2018-10-17 The Goodyear Tire & Rubber Company Anti-skid stud for insertion into the tread of a vehicle tire and pneumatic tire comprising such anti-skid studs
US10647163B2 (en) 2015-06-12 2020-05-12 The Yokohama Rubber Co., Ltd. Stud pin and pneumatic tire

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DE1202156B (en) * 1963-06-01 1965-09-30 Continental Gummi Werke Ag Anti-skid body for vehicle tires, especially pneumatic vehicle tires
GB1209293A (en) * 1968-05-31 1970-10-21 Kennametal Inc Tire stud
FR2278511A1 (en) * 1974-07-19 1976-02-13 Ugine Carbone ANTI-SLIP CRAMP FOR TIRES
FR2775934A1 (en) * 1998-03-12 1999-09-17 Ugigrip Sarl Motor vehicle stud method of manufacture
WO1999056976A1 (en) * 1998-04-30 1999-11-11 Otkrytoe Aktsionernoe Obschestvo 'nizhnekamskshina' Antiskid spike for vehicle tyres
US20040231775A1 (en) * 2002-11-04 2004-11-25 Nokian Tyres Plc Tire with quadrangular studs
WO2005049341A1 (en) * 2003-11-21 2005-06-02 Continental Aktiengesellschaft Vehicle tire spike
EP1642753A1 (en) * 2004-09-29 2006-04-05 Scason OY Stud for tyre
EP1661734A1 (en) * 2004-11-24 2006-05-31 Continental Aktiengesellschaft Stud and tire with a tread equipped with such studs

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DE1202156B (en) * 1963-06-01 1965-09-30 Continental Gummi Werke Ag Anti-skid body for vehicle tires, especially pneumatic vehicle tires
GB1209293A (en) * 1968-05-31 1970-10-21 Kennametal Inc Tire stud
FR2278511A1 (en) * 1974-07-19 1976-02-13 Ugine Carbone ANTI-SLIP CRAMP FOR TIRES
FR2775934A1 (en) * 1998-03-12 1999-09-17 Ugigrip Sarl Motor vehicle stud method of manufacture
WO1999056976A1 (en) * 1998-04-30 1999-11-11 Otkrytoe Aktsionernoe Obschestvo 'nizhnekamskshina' Antiskid spike for vehicle tyres
US20040231775A1 (en) * 2002-11-04 2004-11-25 Nokian Tyres Plc Tire with quadrangular studs
WO2005049341A1 (en) * 2003-11-21 2005-06-02 Continental Aktiengesellschaft Vehicle tire spike
EP1642753A1 (en) * 2004-09-29 2006-04-05 Scason OY Stud for tyre
EP1661734A1 (en) * 2004-11-24 2006-05-31 Continental Aktiengesellschaft Stud and tire with a tread equipped with such studs

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101198153B1 (en) 2010-11-29 2012-11-12 한국타이어월드와이드 주식회사 Stud for snow tire
EP2682285A1 (en) * 2011-03-01 2014-01-08 Kabushiki Kaisha Bridgestone Spike for tire
EP2682285A4 (en) * 2011-03-01 2014-07-30 Bridgestone Corp Spike for tire
RU2554035C2 (en) * 2011-03-01 2015-06-20 Кабусики Кайса Бриджстоун Tire stud
WO2012117962A1 (en) 2011-03-01 2012-09-07 株式会社ブリヂストン Spike for tire
EP2540527B1 (en) * 2011-06-28 2018-10-17 The Goodyear Tire & Rubber Company Anti-skid stud for insertion into the tread of a vehicle tire and pneumatic tire comprising such anti-skid studs
RU2623320C2 (en) * 2013-01-25 2017-06-23 Нокиан Ренкаат Оий Vehicle tire and antislip stud inserted in vehicle tire
WO2014122570A1 (en) 2013-02-06 2014-08-14 Pirelli Tyre S.P.A. A studded tyre and a method for improving the performance of a studded tyre
CN105392639A (en) * 2013-07-24 2016-03-09 横滨橡胶株式会社 Stud pin, and pneumatic tire
EP3025880A4 (en) * 2013-07-24 2017-04-12 The Yokohama Rubber Co., Ltd. Stud pin, and pneumatic tire
US10369848B2 (en) 2013-07-24 2019-08-06 The Yokohama Rubber Co., Ltd. Stud pin, and pneumatic tire
US10647163B2 (en) 2015-06-12 2020-05-12 The Yokohama Rubber Co., Ltd. Stud pin and pneumatic tire
DE102015225224A1 (en) 2015-12-15 2017-06-22 Continental Reifen Deutschland Gmbh Vehicle tires
WO2017102115A1 (en) 2015-12-15 2017-06-22 Continental Reifen Deutschland Gmbh Pneumatic vehicle tire

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