EP1069995A1 - Stud for tyre - Google Patents

Stud for tyre

Info

Publication number
EP1069995A1
EP1069995A1 EP99915769A EP99915769A EP1069995A1 EP 1069995 A1 EP1069995 A1 EP 1069995A1 EP 99915769 A EP99915769 A EP 99915769A EP 99915769 A EP99915769 A EP 99915769A EP 1069995 A1 EP1069995 A1 EP 1069995A1
Authority
EP
European Patent Office
Prior art keywords
stud
locking flange
tyre
shank
rubber
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Withdrawn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
EP99915769A
Other languages
German (de)
French (fr)
Inventor
Heikki Salakari
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.)
Turvanasta Oy
Original Assignee
Turvanasta 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
Application filed by Turvanasta Oy filed Critical Turvanasta Oy
Publication of EP1069995A1 publication Critical patent/EP1069995A1/en
Withdrawn legal-status Critical Current

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

Definitions

  • This invention relates to a tyre stud consisting of an essentially cylindrical shank with a hard metal tip at one end and a locking flange at the other end, which locks the stud to the tyre.
  • the stud of the invention is characterised in that the locking flange is made of a resilient material, such as rubber or resilient plastic.
  • the locking flange is kept substantially in position despite the tilting movements of the stud.
  • the locking flange can receive forces exerted on the hard metal tip of the stud especially when the road surface is molten, the stud tip being incapable of penetrating into the snow mass or the icy surface.
  • the stud consists of a cylindrical shank 1 with a hard metal tip 2 at its end. At the other end of the stud shank, a locking flange 3 is provided, which locks the stud to the tyre.
  • the locking flange 3 is made of a resilient material, such as rubber or resi- lient plastic.
  • the locking flange 3 is a disc which bends as indicated with the broken line when the stud tilts approx. 10°, for instance.
  • the locking flange 3 locks the stud to the tyre. Owing to its resilience, the edges of the locking flange 3 do not damage the tyre rubber or the tyre fabric.
  • Figure 2 illustrates an embodiment in which the locking flange is equipped with a pad 4.
  • the locking flange and the pad have been combined to form a pad-like locking flange 3.
  • the locking flange 3 has a cylindrical mantle 5, which surrounds the shank 1 of the stud. In this way, the locking flange is well fixed to the stud shank despite the tilting forces.
  • the locking flange and the pad shown in figure 4 make up a combination which is an open cup 3 with a bellows-like shape.

Landscapes

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

Abstract

The invention relates to a tyre stud comprising a substantially cylindrical shank (1) with a hard metal tip (2) at its one end and a locking flange (3) at its other end, the locking flange locking the stud to the tyre. The locking flange (3) is made of a resilient material, such as rubber or resilient plastic.

Description

Stud for tyre
This invention relates to a tyre stud consisting of an essentially cylindrical shank with a hard metal tip at one end and a locking flange at the other end, which locks the stud to the tyre.
All winter tyre manufacturers strive to reduce the tyre material, i.e. the rubber volume, in order to provide lighter and thus improved riding qualities. In addition, winter tyres equipped with studs cause lower wear of the road surface material. Lighter winter tyres have resulted in the stud locking flange getting very close to the fabric layer within a winter tyre. The stud locking flange and the fabric layer are spaced by only 2 to 3 mm. This, in turn, has resulted in the edge of the stud locking flange having caused such strong wear of the tyre rubber under the tilting move- ments of the stud that the internal fabric layer has been damaged and the tyre has even burst.
The stud of the invention is characterised in that the locking flange is made of a resilient material, such as rubber or resilient plastic. By means of the invention, the locking flange is kept substantially in position despite the tilting movements of the stud. Thus, there will be none of the drawbacks and damages mentioned above.
Various embodiments of the invention are set forth in the dependent claims of the set of claims. The locking flange can receive forces exerted on the hard metal tip of the stud especially when the road surface is molten, the stud tip being incapable of penetrating into the snow mass or the icy surface.
The invention is described below by means of examples and with reference to the accompanying drawing, in which figures 1 to 4 illustrate four studs comprising dif- ferent locking flange applications.
The stud consists of a cylindrical shank 1 with a hard metal tip 2 at its end. At the other end of the stud shank, a locking flange 3 is provided, which locks the stud to the tyre. The locking flange 3 is made of a resilient material, such as rubber or resi- lient plastic.
In figure 1 the locking flange 3 is a disc which bends as indicated with the broken line when the stud tilts approx. 10°, for instance. The locking flange 3 locks the stud to the tyre. Owing to its resilience, the edges of the locking flange 3 do not damage the tyre rubber or the tyre fabric.
Figure 2 illustrates an embodiment in which the locking flange is equipped with a pad 4.
In figure 3, the locking flange and the pad have been combined to form a pad-like locking flange 3. The locking flange 3 has a cylindrical mantle 5, which surrounds the shank 1 of the stud. In this way, the locking flange is well fixed to the stud shank despite the tilting forces.
The locking flange and the pad shown in figure 4 make up a combination which is an open cup 3 with a bellows-like shape.

Claims

Claims
1. A tyre stud consisting of a substantially cylindrical shank (1) with a hard metal tip (2) at one end and a locking flange (3) at the other end to lock the stud to the ty- re, characterised in that the locking flange (3) is made of a resilient material, such as rubber or resilient plastic.
2. A stud as claimed in claim 1, characterised in that a resilient pad (4) known per se has been connected to the locking flange (3).
3. A stud as claimed in claim 2, characterised in that the pad (4) consists of a bellows open at its end.
4. A stud as claimed in any of the preceding claims, characterised in that the locking flange (3) has a cylindrical mantle (5) which surrounds the stud shank (1).
EP99915769A 1998-04-09 1999-04-08 Stud for tyre Withdrawn EP1069995A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI980821A FI980821A (en) 1998-04-09 1998-04-09 Tire stud
FI980821 1998-04-09
PCT/FI1999/000293 WO1999052721A1 (en) 1998-04-09 1999-04-08 Stud for tyre

Publications (1)

Publication Number Publication Date
EP1069995A1 true EP1069995A1 (en) 2001-01-24

Family

ID=8551504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99915769A Withdrawn EP1069995A1 (en) 1998-04-09 1999-04-08 Stud for tyre

Country Status (4)

Country Link
EP (1) EP1069995A1 (en)
AU (1) AU3422199A (en)
FI (1) FI980821A (en)
WO (1) WO1999052721A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111683824A (en) * 2018-02-02 2020-09-18 大陆轮胎德国有限公司 Stud and pneumatic vehicle tire with stud

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115761B (en) * 1999-11-05 2005-07-15 Turvanasta Oy Tire stud
JP2016022892A (en) * 2014-07-23 2016-02-08 横浜ゴム株式会社 Stud pin and pneumatic tire
DE102018129474A1 (en) 2018-11-22 2020-05-28 Sitek-Spikes Gmbh & Co. Kg Anti-slip pin
DE102018129477A1 (en) 2018-11-22 2020-05-28 Sitek-Spikes Gmbh & Co. Kg Anti-slip pin

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1230508A (en) * 1915-08-19 1917-06-19 Theodore F Smith Pneumatic tire.
US3473591A (en) * 1966-07-04 1969-10-21 Hard Metals Ltd Anti-skid devices
CH524487A (en) * 1970-06-11 1972-06-30 Neidhardt Hans Ulrich Dr Ing Studded tires
DE2204074A1 (en) * 1972-01-28 1973-08-02 Karlheinz Dorr SKID PROTECTION BODY FOR VEHICLE AIR TIRES
US3831655A (en) * 1972-11-03 1974-08-27 Kennametal Inc Anti skid element for a vehicle tire
US4844137A (en) * 1988-04-21 1989-07-04 Einar Einarsson Self-adjusting tire stud

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9952721A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111683824A (en) * 2018-02-02 2020-09-18 大陆轮胎德国有限公司 Stud and pneumatic vehicle tire with stud
CN111683824B (en) * 2018-02-02 2022-07-08 大陆轮胎德国有限公司 Stud and pneumatic vehicle tire with stud

Also Published As

Publication number Publication date
WO1999052721A1 (en) 1999-10-21
FI980821A (en) 1999-10-10
FI980821A0 (en) 1998-04-09
AU3422199A (en) 1999-11-01

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Legal Events

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