WO2001032449A1 - Stud for tire - Google Patents
Stud for tire Download PDFInfo
- Publication number
- WO2001032449A1 WO2001032449A1 PCT/FI2000/000959 FI0000959W WO0132449A1 WO 2001032449 A1 WO2001032449 A1 WO 2001032449A1 FI 0000959 W FI0000959 W FI 0000959W WO 0132449 A1 WO0132449 A1 WO 0132449A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stud
- pin
- fixing flange
- body portion
- tire
- 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.)
- Ceased
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
- the invention relates to a tire stud consisting of a substantially cylindrical body portion, which has a hard metal tip at one end and a fixing flange at the other end, the fixing flange attaching the stud to the tire and made of a light injectable material, such as rubber or plastic, and the body portion comprising a pin extending towards the fixing flange, with the cylindrical mantle portion of the fixing flange fixed to this pin.
- Winter tire manufacturers generally strive to reduce the tire material, i.e. the rubber mass, in order to reduce the weight of the unsuspended vehicle mass, thus enhancing the road-holding properties of the vehicle.
- Winter tires equipped with lighter studs also cause less abrasion of the road surface material.
- the lighter weight of winter tires has resulted in the stud-fixing flange getting very close to the tissue layer within the winter tire.
- the stud-fixing flange and the tissue layer are spaced only by 2-3 mm. As a result of this, under tilting movements of the stud, the edge of the stud-fixing flange has caused such high wear of the tire rubber that the inner tissue layer has been damaged and the tire has even exploded.
- FI patent specification 77,409 consists of a metal stud body, around which a plastic collar portion has been fixed, with the stud flange portion formed at its lower end.
- This type of a stud involves the problem of the metal stud body tapering markedly towards the flange portion of the stud. Consequently, as the stud is under pressure parallel to the vertical axis of the stud, the metal stud body will act as a wedge, which enlarges the plastic collar portion. As a matter of time, the plastic collar portion will loosen to such an extent that the metal stud body is detached from the collar portion.
- US patent specification 3,831,655 discloses a stud, in which the bottom portion made of a flexible material has been attached to a shank portion of metal either by mechanical joining, gluing or vulcanisation.
- the shank portion is distinctly narrower than the bottom portion, not allowing the use of equipment intended for fitting conventional studs.
- the flexible material of the stud bottom portion extend over the shank portion at all, or does so only over a short distance. This results in low friction between the stud and the tire, and the stud may come off the tire.
- the object of the invention is to provide a stud of a new type, which is both durable and light.
- the stud in accordance with the invention is characterised by the fact that the annular press surface between the body portion and the mantle portion, which is located substantially at the centre of the stud, is straight and has an area substantially three times the sectional cross-area of the pin.
- the invention achieves a very light stud with adequate durability characteristics.
- the weight of this stud is about half of that of a steel stud of the same size.
- the stud causes less abrasion of the road surface. Owing to its lighter weight the stud is less noisy.
- the flexible fixing flange will remain substantially in position despite tilting of the stud. Since the actual appearance and dimensions of the stud do not differ from those of conventional steel studs, existing operational equipment can be used for attaching the studs to the tires. Owing to the small body portion of metal and the option of using facing in the manufacture, the percentage of material wastage will be very low. Plastic parts have also proved to withstand wear against rubber better than steel studs, and thus the stud is better retained in the tire.
- the fixing flange is apt to receive forces exerted on the hard metal tip especially when the road surface is molten, with no snow mass or icy surface the stud tip could grip.
- the stud consists of a cylindrical body portion 1 with a hard metal tip 2 at one end.
- the other end of the stud body portion is equipped with a fixing flange 3. which attaches the stud to the tire.
- the fixing flange 3 is made of light-weight injectable material, such as plastic.
- the body portion 1 comprises a pin 4 extending towards the fixing flange, the fixing flange mantle 5, which is cylindrical in shape and has a rough outer surface, being fixed around the pin.
- the press surface 10 between the body portion 1 and the mantle portion 5 is straight.
- the pin 4 comprises protruding grip rings 6 and the pin 4 comprises an eccentric or elliptic flange portion 9 at its end. This eccentric flange portion 9 prevents the pin 4 from rotating relative to the flange portion 5.
- the outer surface of the mantle portion 5 has an annular recess 7.
- the outer surface of the fixing flange 3 has a concave recess 8. This arrangement allows a small yield for the body portion 1 in the fixing flange 3 when the stud tip hits the hard road surface.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention relates to a tire stud, which consists of a substantially cylindrical body portion (1), which has a hard metal tip (2) at one end and a fixing flange (3) at the other end, the fixing flange attaching the stud to the tire and consisting of a light-weight injectable material, such as rubber or plastic. The body portion (1) has a pin (4) extending towards the fixing flange, with the cylindrical mantle portion (5) of the fixing flange fixed around the pin.
Description
Stud for tire
The invention relates to a tire stud consisting of a substantially cylindrical body portion, which has a hard metal tip at one end and a fixing flange at the other end, the fixing flange attaching the stud to the tire and made of a light injectable material, such as rubber or plastic, and the body portion comprising a pin extending towards the fixing flange, with the cylindrical mantle portion of the fixing flange fixed to this pin.
Winter tire manufacturers generally strive to reduce the tire material, i.e. the rubber mass, in order to reduce the weight of the unsuspended vehicle mass, thus enhancing the road-holding properties of the vehicle. Winter tires equipped with lighter studs also cause less abrasion of the road surface material. The lighter weight of winter tires has resulted in the stud-fixing flange getting very close to the tissue layer within the winter tire. The stud-fixing flange and the tissue layer are spaced only by 2-3 mm. As a result of this, under tilting movements of the stud, the edge of the stud-fixing flange has caused such high wear of the tire rubber that the inner tissue layer has been damaged and the tire has even exploded.
There have also been continuous efforts to find a stud solution that is at the same time durable and as light as possible. There are previously known plastic and aluminium studs, but they have poorer durability than studs with a steel body. There are also known studs combining a hard metal core with a plastic stud body.
Such studs have been disclosed e.g. by FI patent specification 77,409 and US patent specification 3,831 ,655. The stud described in FI patent specification 77,409 consists of a metal stud body, around which a plastic collar portion has been fixed, with the stud flange portion formed at its lower end. This type of a stud involves the problem of the metal stud body tapering markedly towards the flange portion of the stud. Consequently, as the stud is under pressure parallel to the vertical axis of the stud, the metal stud body will act as a wedge, which enlarges the plastic collar portion. As a matter of time, the plastic collar portion will loosen to such an extent that the metal stud body is detached from the collar portion.
US patent specification 3,831,655 discloses a stud, in which the bottom portion made of a flexible material has been attached to a shank portion of metal either by mechanical joining, gluing or vulcanisation. In this stud model, the shank portion is distinctly narrower than the bottom portion, not allowing the use of equipment
intended for fitting conventional studs. Nor does the flexible material of the stud bottom portion extend over the shank portion at all, or does so only over a short distance. This results in low friction between the stud and the tire, and the stud may come off the tire.
The object of the invention is to provide a stud of a new type, which is both durable and light. The stud in accordance with the invention is characterised by the fact that the annular press surface between the body portion and the mantle portion, which is located substantially at the centre of the stud, is straight and has an area substantially three times the sectional cross-area of the pin.
The invention achieves a very light stud with adequate durability characteristics. The weight of this stud is about half of that of a steel stud of the same size. The stud causes less abrasion of the road surface. Owing to its lighter weight the stud is less noisy. The flexible fixing flange will remain substantially in position despite tilting of the stud. Since the actual appearance and dimensions of the stud do not differ from those of conventional steel studs, existing operational equipment can be used for attaching the studs to the tires. Owing to the small body portion of metal and the option of using facing in the manufacture, the percentage of material wastage will be very low. Plastic parts have also proved to withstand wear against rubber better than steel studs, and thus the stud is better retained in the tire.
Various embodiments of the invention are described in the dependent claims of the set of claims. The fixing flange is apt to receive forces exerted on the hard metal tip especially when the road surface is molten, with no snow mass or icy surface the stud tip could grip.
The invention is explained below by means of examples and with reference to the accompanying drawing, in which the figure shows the stud in partial section.
The stud consists of a cylindrical body portion 1 with a hard metal tip 2 at one end. The other end of the stud body portion is equipped with a fixing flange 3. which attaches the stud to the tire. The fixing flange 3 is made of light-weight injectable material, such as plastic.
The body portion 1 comprises a pin 4 extending towards the fixing flange, the fixing flange mantle 5, which is cylindrical in shape and has a rough outer surface, being fixed around the pin. The press surface 10 between the body portion 1 and the mantle portion 5 is straight. The pin 4 comprises protruding grip rings 6 and the pin 4 comprises an eccentric or elliptic flange portion 9 at its end. This eccentric flange
portion 9 prevents the pin 4 from rotating relative to the flange portion 5. The outer surface of the mantle portion 5 has an annular recess 7. The outer surface of the fixing flange 3 has a concave recess 8. This arrangement allows a small yield for the body portion 1 in the fixing flange 3 when the stud tip hits the hard road surface.
Claims
1. A tire stud consisting of a substantially cylindrical body portion (1) having a hard metal tip (2) at one end and a fixing flange (3) at the other end, the fixing flange attaching the stud to the tire and consisting of a light-weight injectable material such as rubber or plastic, the body portion (1 ) comprising a pin (4) extending towards the fixing flange, with the cylindrical mantle portion (5) of the fixing flange fixed around the pin, characterised in that the annular press surface (10) between the body portion (1) and the mantle portion (5), which is located substantially at the centre of the stud, is straight and has an area substantially three times the cross-sectional area of the pin (4).
2. A stud as defined in claim 1, characterised in that the press surface (10) has an outer diameter of about 6 mm and the pin has a diameter of about 3 mm.
3. A stud as defined in claim 1 or 2, characterised in that the pin (4) comprises protruding grip rings (6).
4. A stud as defined in claim 1, 2 or 3, characterised in that the outer surface of the fixing flange (3) and its cylindrical mantle portion (5) is rough.
5. A stud as defined in claims 1-4, characterised in that the fixing flange (3) and its cylindrical mantle portion (5) has been fixed to the pin (4) and the body portion (1) by plastic injection moulding.
6. A stud as defined in any of the preceding claims, characterised in that the pin (4) has an eccentric or elliptic flange portion (9) at its end.
7. A stud as defined in any of claims 1-5, characterised in that the pin (4) is elliptic in cross-section.
8. A stud as defined in any of the preceding claims, characterised in that the outer surface of the fixing flange (3) has a concave recess (8).
9. A stud as defined in any of the preceding claims, characterised in that the diameter of the body portion (1) is substantially equal to the diameter of the mantle portion (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU11515/01A AU1151501A (en) | 1999-11-05 | 2000-11-03 | Stud for tire |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI19992395 | 1999-11-05 | ||
| FI992395 | 1999-11-05 | ||
| FI20001520 | 2000-06-27 | ||
| FI20001520A FI115761B (en) | 1999-11-05 | 2000-06-27 | Dubb for vehicle tires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001032449A1 true WO2001032449A1 (en) | 2001-05-10 |
Family
ID=26160800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FI2000/000959 Ceased WO2001032449A1 (en) | 1999-11-05 | 2000-11-03 | Stud for tire |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU1151501A (en) |
| FI (1) | FI115761B (en) |
| WO (1) | WO2001032449A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2579386C2 (en) * | 2011-05-03 | 2016-04-10 | Александр Васильевич Корниенко | Antiskid stud |
| RU2579601C2 (en) * | 2011-06-17 | 2016-04-10 | Александр Васильевич Корниенко | Antiskid stud (versions) |
| CN107074038A (en) * | 2014-09-26 | 2017-08-18 | 大陆轮胎德国有限公司 | Vehicle pneumatic tire with studs in the tread |
| WO2017198352A1 (en) | 2016-05-17 | 2017-11-23 | Continental Reifen Deutschland Gmbh | Stud for a pneumatic vehicle tyre, and method for producing a stud |
| US10981423B2 (en) * | 2015-12-29 | 2021-04-20 | Bridgestone Americas Tire Operations, Llc | Tire projection and housing system |
| RU209499U1 (en) * | 2021-08-02 | 2022-03-16 | Общество С Ограниченной Ответственностью "Теком" | ANTI-SKID STUD FOR TIRES OF SELF-PROPELLED WHEELS |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20100190A1 (en) | 2010-05-03 | 2018-12-14 | Marja Hietarinta-Salakari | Car winter tire and stud included in the tire |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831655A (en) * | 1972-11-03 | 1974-08-27 | Kennametal Inc | Anti skid element for a vehicle tire |
| FI77409B (en) * | 1987-03-09 | 1988-11-30 | Airam Ab Oy | SLIRSKYDD MED KOMBINATIONSSTOMME FOER FORDONSDAECK. |
| JPH02182506A (en) * | 1989-01-09 | 1990-07-17 | Tadahiro Shinpo | Tire with detachable slip-preventive spike pins |
| JPH10264618A (en) * | 1997-03-24 | 1998-10-06 | Kazuo Kojima | Pin device affixed tire and pin device |
| WO1999052721A1 (en) * | 1998-04-09 | 1999-10-21 | Turvanasta Oy | Stud for tyre |
-
2000
- 2000-06-27 FI FI20001520A patent/FI115761B/en not_active IP Right Cessation
- 2000-11-03 AU AU11515/01A patent/AU1151501A/en not_active Abandoned
- 2000-11-03 WO PCT/FI2000/000959 patent/WO2001032449A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831655A (en) * | 1972-11-03 | 1974-08-27 | Kennametal Inc | Anti skid element for a vehicle tire |
| FI77409B (en) * | 1987-03-09 | 1988-11-30 | Airam Ab Oy | SLIRSKYDD MED KOMBINATIONSSTOMME FOER FORDONSDAECK. |
| JPH02182506A (en) * | 1989-01-09 | 1990-07-17 | Tadahiro Shinpo | Tire with detachable slip-preventive spike pins |
| JPH10264618A (en) * | 1997-03-24 | 1998-10-06 | Kazuo Kojima | Pin device affixed tire and pin device |
| WO1999052721A1 (en) * | 1998-04-09 | 1999-10-21 | Turvanasta Oy | Stud for tyre |
Non-Patent Citations (2)
| Title |
|---|
| DATABASE WPI Week 199034, Derwent World Patents Index; AN 1990-258367 * |
| PATENT ABSTRACTS OF JAPAN * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2579386C2 (en) * | 2011-05-03 | 2016-04-10 | Александр Васильевич Корниенко | Antiskid stud |
| RU2579601C2 (en) * | 2011-06-17 | 2016-04-10 | Александр Васильевич Корниенко | Antiskid stud (versions) |
| CN107074038A (en) * | 2014-09-26 | 2017-08-18 | 大陆轮胎德国有限公司 | Vehicle pneumatic tire with studs in the tread |
| US10981423B2 (en) * | 2015-12-29 | 2021-04-20 | Bridgestone Americas Tire Operations, Llc | Tire projection and housing system |
| WO2017198352A1 (en) | 2016-05-17 | 2017-11-23 | Continental Reifen Deutschland Gmbh | Stud for a pneumatic vehicle tyre, and method for producing a stud |
| DE102016208386A1 (en) | 2016-05-17 | 2017-11-23 | Continental Reifen Deutschland Gmbh | Spike for a pneumatic vehicle tire and method of making a spike |
| RU209499U1 (en) * | 2021-08-02 | 2022-03-16 | Общество С Ограниченной Ответственностью "Теком" | ANTI-SKID STUD FOR TIRES OF SELF-PROPELLED WHEELS |
Also Published As
| Publication number | Publication date |
|---|---|
| FI115761B (en) | 2005-07-15 |
| FI20001520L (en) | 2001-05-06 |
| AU1151501A (en) | 2001-05-14 |
| FI20001520A0 (en) | 2000-06-27 |
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| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
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