WO2005051641A1 - 空気入りラジアルタイヤの製造方法及びそれに用いるベルトトレッド組立体のトランスファー装置 - Google Patents
空気入りラジアルタイヤの製造方法及びそれに用いるベルトトレッド組立体のトランスファー装置 Download PDFInfo
- Publication number
- WO2005051641A1 WO2005051641A1 PCT/JP2004/017349 JP2004017349W WO2005051641A1 WO 2005051641 A1 WO2005051641 A1 WO 2005051641A1 JP 2004017349 W JP2004017349 W JP 2004017349W WO 2005051641 A1 WO2005051641 A1 WO 2005051641A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tread assembly
- belt tread
- belt
- transfer device
- gripping
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/24—Drums
- B29D30/26—Accessories or details, e.g. membranes, transfer rings
- B29D30/2607—Devices for transferring annular tyre components during the building-up stage, e.g. from the first stage to the second stage building drum
Definitions
- the present invention relates to a method for manufacturing a pneumatic radial tire in which a cylindrical belt tread assembly is pressed against a primary green tire having a toroidally expanded diameter, and more particularly, to a tire uniformity. More particularly, the present invention relates to a method for manufacturing a pneumatic radial tire and a transfer device for a belt tread assembly used for preventing a peeling failure due to air accumulation.
- a primary green tire including a carcass layer is molded, while a cylindrical belt tread assembly including a belt layer is molded, and the belt tread assembly is transferred using a transfer device.
- a belt tread assembly is pressure-bonded to the primary green tire which is conveyed to the outer peripheral side of the next green tire and expanded in a toroidal shape (for example, see Patent Document 1).
- the transfer device has a plurality of gripping members for gripping the belt tread assembly from the outer peripheral side, each gripping member has a gripping surface parallel to the axial direction of the belt tread assembly, and has a cylindrical belt shape.
- the tread assembly is gripped in a state in which it is in close contact with the outer peripheral surface.
- the primary green tire is inflated while the belt tread assembly is gripped, the primary green tire and the belt tread assembly are crimped, and then the transfer device is moved to the belt.
- the secondary green tire is completed by stitching the tread assembly.
- Patent Document 1 Japanese Patent Application Laid-Open No. 11-333945
- An object of the present invention is to provide a method of manufacturing a pneumatic radial tire capable of improving the uniformity of a tire and preventing peeling failure due to air accumulation, and a transfer device for a belt tread assembly used therefor. To provide.
- a method for manufacturing a pneumatic radial tire according to the present invention for achieving the above object includes forming a primary green tire including a carcass layer, forming a cylindrical belt tread assembly including a belt layer, and forming a three-dimensional structure. Transferring the belt tread assembly to the outer peripheral side of the primary green tire with a transfer device, and crimping the belt tread assembly to the toroidally inflated primary green tire. In the manufacturing method, the transfer device crimps the primary green tire and the belt tread assembly in a state where the transfer device constrains both sides of the belt tread assembly and allows a center portion to expand. Things.
- the transfer device of the belt tread assembly it is preferable to use the following two types of transfer devices. That is, the first transfer device is a transfer device for transporting the belt tread assembly, comprising a plurality of gripping members for gripping the belt tread assembly from the outer peripheral side, and a belt tray on the gripping surface of each gripping member. The curvature is given such that the inner diameter decreases toward the outside in the width direction of the pad assembly. Further, the second transfer device is a transfer device for transporting the belt tread assembly, comprising a plurality of gripping members for gripping the belt tread assembly also on the outer peripheral side, and holding the gripping surface of each gripping member with a belt. It is characterized by being separated in the width direction of the tread assembly.
- the transfer device restrains both sides of the belt tread assembly while By crimping the primary green tire and the belt tread assembly in a state where the bulge of the tire portion is allowed, the shape of the secondary green tire approximates to the mold shape, and the uniformity of the tire can be improved.
- both ends of the laminated belt layer are narrowed down to the primary green tire side. Air accumulation occurs between the portion and the carcass layer 1, and separation failure due to the air accumulation can be effectively prevented.
- the grip surface of the transfer device is used to prevent the belt tread assembly gripped by the grip member from moving. It is preferable to provide a non-slip on the surface.
- the transfer device has a structure in which the gripping surfaces of the gripping members are separated in the width direction of the belt tread assembly, it is possible to effectively prevent separation failure due to air accumulation without impairing the workability during crimping.
- FIG. 1 is a front view schematically showing a transfer device of a belt tread assembly used in the present invention.
- FIG. 2 is a tire meridian sectional view showing a method for manufacturing a pneumatic radial tire according to the first embodiment of the present invention.
- FIG. 3 is a tire meridian sectional view showing a method for manufacturing a pneumatic radial tire according to a second embodiment of the present invention.
- FIG. 4 is a tire meridian sectional view showing a method for manufacturing a pneumatic radial tire according to a third embodiment of the present invention.
- FIG. 1 schematically shows a transfer device of a belt tread assembly used in the present invention.
- the transfer device 1 has a configuration in which an annular frame portion 2 is mounted on a trolley 3, and a plurality of wheels 4 attached to the trolley 3 I'm starting to run on! /
- the frame 2 is provided with a plurality of radially expandable and contractible arm members 6 at equal intervals in the circumferential direction, and a grip member 7 is attached to each of the distal ends of the arm members 6.
- the plurality of gripping members 7 grip the cylindrical belt tread assembly 21 from the outer peripheral side when the arm member 6 extends radially inward of the frame portion 2.
- FIG. 2 shows a method for manufacturing a pneumatic radial tire according to the first embodiment of the present invention.
- the gripping member 7 of the transfer device 1 has a structure in which the gripping surface 8 is provided with a curvature such that the inner diameter is reduced by applying a force outward in the width direction of the belt tread assembly 21. Therefore, the gripping member 7 grips the belt tread assembly 21 in a state where the gripping member 7 comes into contact with both side portions of the belt tread assembly 21 but does not touch the center portion.
- a primary green tire 11 including a force layer 12 is formed, while a cylindrical belt tread assembly including a belt layer 22 is formed.
- Form 21 (see Fig. 2).
- the belt tread assembly 21 is transported to the outer peripheral side of the primary green tire 11 supported by the pair of bead support members 31 by using the transfer device 1, and the interval between the bead support members 31 is reduced to form a toroidal shape.
- the belt tread assembly 21 is pressure-bonded to the primary green tire 11 that has been inflated in the manner described above. At this time, only the both ends of the belt tread assembly 21 are gripped by the gripping member 7 having the curved gripping surface 8.
- the primary Darline tire 11 and the belt tread assembly 21 can be crimped in a state where the transfer device 1 restricts both sides of the belt tread assembly 21 and allows the center portion to expand.
- the secondary green tire thus obtained goes through a vulcanization process to become a product tire. In this vulcanization process, the shape of the secondary green tire approximates to the mold shape, so that the uniformity of the tire can be improved.
- both ends of the laminated belt layer 22 are narrowed down to the primary green tire 11 side.
- the transfer device 1 has a structure in which the gripping surface 8 of each gripping member 7 has a curvature.
- a non-slip made of, for example, minute projections 9 on the holding surface 8 of the transfer device 1 in order to prevent the belt tread assembly 21 held by the holding member 7 from moving.
- the gripping surface 8 can be roughened or the gripping surface 8 can be made of rubber.
- FIG. 3 shows a method of manufacturing a pneumatic radial tire according to a second embodiment of the present invention.
- the holding member 7 of the transfer device 1 has a structure in which the holding surface 8 is separated in the width direction of the belt tread assembly 21. That is, the gripping member 7 has a bridge structure that straddles the width direction of the belt tread assembly 21 while separating the gripping surface 8 into the gripping surfaces 8a and 8b, and between the gripping surfaces 8a and 8b. Space is interposed. Therefore, the gripping member 7 grips the belt tread assembly 21 in a state in which the gripping member 7 contacts both side portions of the belt tread assembly 21 but does not abut a part of the center.
- a primary green tire 11 including a force layer 12 is formed, while a cylindrical belt tread assembly including a belt layer 22 is formed.
- Form 21 (see Fig. 3).
- the belt tread assembly 21 is transported to the outer peripheral side of the primary green tire 11 supported by the pair of bead support members 31 by using the transfer device 1, and the interval between the bead support members 31 is reduced to form a toroidal shape.
- the belt tread assembly 21 is pressure-bonded to the primary green tire 11 that has been inflated in the manner described above. At this time, only the both ends of the belt tread assembly 21 are gripped by the gripping member 7 having the gripping surfaces 8a and 8b separated from each other.
- the primary green tire 11 and the belt tread assembly 21 can be crimped in a state where the transfer device 1 restricts both side portions of the belt tread assembly 21 and allows the center portion to expand.
- the secondary green tire thus obtained becomes a product tire through a vulcanization process.
- the shape of the secondary green tire approximates the shape of the mold, so that the tire uniformity can be improved.
- both ends of the laminated belt layer 22 are narrowed down to the primary green tire 11 side.
- the width W of the separated gripping surfaces 8a and 8b of each gripping member 7 should be set to 5 to 30% of the width W of the belt layer 22 laminated on the innermost side.
- this width W is less than 5% of the width W, the primary green tire 11 and the belt tread assembly
- Crimping work with 21 becomes difficult, and conversely, if it exceeds 30% of width W, peeling due to air accumulation will occur.
- the grip member 7 is configured such that the distance between the grip surfaces 8a and 8b can be freely changed, it is possible to cope with various tire sizes. In this case, there is no need to prepare a dedicated transfer device for each tire size.
- FIG. 4 shows a method of manufacturing a pneumatic radial tire according to a third embodiment of the present invention.
- This embodiment is a combination of the first embodiment and the second embodiment.
- the gripping member 7 of the transfer device 1 has a structure in which the gripping surface 8 is separated in the width direction of the belt tread assembly 21. That is, the gripping surface 8 is separated into the gripping surface 8a and the gripping surface 8b, and a space is interposed between the gripping surfaces 8a and 8b. Further, the grip surfaces 8a and 8b are provided with a curvature such that the inner diameter decreases toward the outer side in the width direction of the belt tread assembly 21. Even when such a transfer device 1 is used, the above-described effects can be obtained.
- a pneumatic radial tire (tire size: 225Z50R16) including two carcass layers made of polyester cord, two belt layers made of steel cord, and a belt cover layer made of nylon cord is manufactured.
- a cylindrical belt tread assembly including the belt layer is formed, and the belt tread assembly is transferred to the outer peripheral side of the primary green tire by various transfer devices. Conveyed and crimped belt tread assembly to primary green tire expanded to toroidal (Examples 1-2 and Conventional Example).
- a transfer device was used.
- Example 2 in the transfer device used in Example 1, a rough sheet was attached to the gripping surface.
- a transfer device having a gripping member having a gripping surface parallel to the axial direction of the belt tread assembly was used.
- the radial force variation was measured under the conditions of a measured load of 4.7 kN, a rim size of 7JJX16, and an air pressure of 200 kPa in accordance with JASO C607-87, and the average value of RFV for 100 tires I asked.
- the evaluation results are shown by an index with the conventional example being 100. The smaller the index value, the better the uniformity.
- the tires obtained by the tire manufacturing method of Examples 12 and 12 had better uniformity than the tires obtained by the conventional tire manufacturing method. Further, in the conventional tire manufacturing method, blister failure occurred in four tires! /, But in the tire manufacturing method of Examples 1-2, no blister failure occurred at all.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE602004027526T DE602004027526D1 (de) | 2003-11-25 | 2004-11-22 | Radialluftreifenherstellungsverfahren und dafür verwendete gürtellaufflächenanordnungs-übertragungsvorrichtung |
| US10/577,638 US20070034318A1 (en) | 2003-11-25 | 2004-11-22 | Pneumatic radial tire production method and belt tread assembly transfer apparatus used for the same |
| CN2004800313458A CN1871119B (zh) | 2003-11-25 | 2004-11-22 | 充气子午线轮胎的制造方法及其中所使用的带束层胎面组装体的运送装置 |
| EP04819340A EP1688241B1 (en) | 2003-11-25 | 2004-11-22 | Pneumatic radial tire producion method and belt tread assembly transfer apparatus used for the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003394299A JP3716263B2 (ja) | 2003-11-25 | 2003-11-25 | 空気入りラジアルタイヤの製造方法及びそれに用いるベルトトレッド組立体のトランスファー |
| JP2003-394299 | 2003-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005051641A1 true WO2005051641A1 (ja) | 2005-06-09 |
Family
ID=34631453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/017349 Ceased WO2005051641A1 (ja) | 2003-11-25 | 2004-11-22 | 空気入りラジアルタイヤの製造方法及びそれに用いるベルトトレッド組立体のトランスファー装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070034318A1 (ja) |
| EP (1) | EP1688241B1 (ja) |
| JP (1) | JP3716263B2 (ja) |
| CN (1) | CN1871119B (ja) |
| DE (1) | DE602004027526D1 (ja) |
| WO (1) | WO2005051641A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8029632B2 (en) * | 2005-11-16 | 2011-10-04 | Continental Ag | Method for producing a belt package for a pneumatic vehicle tire |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8431062B2 (en) | 2007-12-21 | 2013-04-30 | The Goodyear Tire & Rubber Company | Tire unloading apparatus and method in a curing line |
| CN104859168B (zh) * | 2015-05-26 | 2017-05-17 | 山东玲珑机电有限公司 | 成型机传递环 |
| JP6747206B2 (ja) * | 2016-09-21 | 2020-08-26 | 住友ゴム工業株式会社 | タイヤの製造方法 |
| JP7424070B2 (ja) * | 2020-01-22 | 2024-01-30 | 住友ゴム工業株式会社 | タイヤの製造方法及び生タイヤ |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1149723A (en) | 1965-06-11 | 1969-04-23 | Dunlop Co Ltd | Improvements in and relating to tyre building apparatus |
| DE1579251A1 (de) | 1964-03-20 | 1970-07-30 | Dunlop Rubber Co | Verfahren zum Vereinigen von Luftreifenbestandteilen und Vorrichtung zur Durchfuehrung des Verfahrens |
| DE2420329A1 (de) | 1974-04-26 | 1975-11-06 | Continental Gummi Werke Ag | Verfahren und vorrichtung zum aufbauen von guerteln fuer fahrzeugluftreifen. |
| DE2459020A1 (de) | 1974-12-13 | 1976-06-16 | Phoenix Gummiwerke Ag | Vorrichtung zum anpressen von laufstreifen auf eine torusfoermige reifenkarkasse |
| EP0071838A1 (de) | 1981-08-05 | 1983-02-16 | Bayer Ag | Verfahren und Vorrichtung zur Herstellung von Radialreifen |
| EP0190532A1 (en) | 1985-02-05 | 1986-08-13 | The Goodyear Tire & Rubber Company | A transfer apparatus for tire carcasses and tire bands |
| JPH06254990A (ja) * | 1993-03-04 | 1994-09-13 | Bridgestone Corp | 生タイヤの成形方法 |
| JP2001277376A (ja) * | 2000-04-03 | 2001-10-09 | Yokohama Rubber Co Ltd:The | タイヤ成形方法及びその成形装置 |
| JP2001277377A (ja) * | 2000-04-03 | 2001-10-09 | Yokohama Rubber Co Ltd:The | タイヤ成形方法及びその成形方法に用いるトランスファー装置 |
| JP2003071947A (ja) * | 2001-09-04 | 2003-03-12 | Yokohama Rubber Co Ltd:The | タイヤ成形装置における部材圧着装置 |
| JP2003071948A (ja) * | 2001-09-04 | 2003-03-12 | Yokohama Rubber Co Ltd:The | タイヤ成形装置における部材圧着装置 |
| JP2003191349A (ja) * | 2001-12-28 | 2003-07-08 | Sumitomo Rubber Ind Ltd | タイヤ製造方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1299691A (fr) * | 1961-06-15 | 1962-07-27 | Dunlop Sa | Procédé et appareillage de manutention d'éléments annulaires déformables |
| US3151013A (en) * | 1961-06-15 | 1964-09-29 | Dunlop Rubber Co | Manufacture of pneumatic tyres |
| GB1039608A (en) * | 1962-05-11 | 1966-08-17 | Du Pont | Improvements in or relating to pneumatic tyre manufacture |
| US3475254A (en) * | 1965-01-05 | 1969-10-28 | Gen Tire & Rubber Co | Tire building machine |
| DE1906294B1 (de) * | 1969-02-08 | 1970-12-03 | Continental Gummi Werke Ag | Verfahren zur Herstellung von Reifen |
| US3923572A (en) * | 1973-03-07 | 1975-12-02 | Goodrich Co B F | Method and apparatus for building tires |
| US4239565A (en) * | 1974-11-29 | 1980-12-16 | The General Tire & Rubber Company | Off-the-highway radial tire building system |
| JPS59202838A (ja) * | 1983-05-02 | 1984-11-16 | Bridgestone Corp | 空気タイヤ用無端状部材の移送装置 |
| US5201975A (en) * | 1987-11-13 | 1993-04-13 | Bridgestone/Firestone Inc. | Tire manufacture |
-
2003
- 2003-11-25 JP JP2003394299A patent/JP3716263B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-22 WO PCT/JP2004/017349 patent/WO2005051641A1/ja not_active Ceased
- 2004-11-22 DE DE602004027526T patent/DE602004027526D1/de not_active Expired - Lifetime
- 2004-11-22 CN CN2004800313458A patent/CN1871119B/zh not_active Expired - Fee Related
- 2004-11-22 EP EP04819340A patent/EP1688241B1/en not_active Expired - Lifetime
- 2004-11-22 US US10/577,638 patent/US20070034318A1/en not_active Abandoned
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1579251A1 (de) | 1964-03-20 | 1970-07-30 | Dunlop Rubber Co | Verfahren zum Vereinigen von Luftreifenbestandteilen und Vorrichtung zur Durchfuehrung des Verfahrens |
| GB1149723A (en) | 1965-06-11 | 1969-04-23 | Dunlop Co Ltd | Improvements in and relating to tyre building apparatus |
| DE2420329A1 (de) | 1974-04-26 | 1975-11-06 | Continental Gummi Werke Ag | Verfahren und vorrichtung zum aufbauen von guerteln fuer fahrzeugluftreifen. |
| DE2459020A1 (de) | 1974-12-13 | 1976-06-16 | Phoenix Gummiwerke Ag | Vorrichtung zum anpressen von laufstreifen auf eine torusfoermige reifenkarkasse |
| EP0071838A1 (de) | 1981-08-05 | 1983-02-16 | Bayer Ag | Verfahren und Vorrichtung zur Herstellung von Radialreifen |
| EP0190532A1 (en) | 1985-02-05 | 1986-08-13 | The Goodyear Tire & Rubber Company | A transfer apparatus for tire carcasses and tire bands |
| JPH06254990A (ja) * | 1993-03-04 | 1994-09-13 | Bridgestone Corp | 生タイヤの成形方法 |
| JP2001277376A (ja) * | 2000-04-03 | 2001-10-09 | Yokohama Rubber Co Ltd:The | タイヤ成形方法及びその成形装置 |
| JP2001277377A (ja) * | 2000-04-03 | 2001-10-09 | Yokohama Rubber Co Ltd:The | タイヤ成形方法及びその成形方法に用いるトランスファー装置 |
| JP2003071947A (ja) * | 2001-09-04 | 2003-03-12 | Yokohama Rubber Co Ltd:The | タイヤ成形装置における部材圧着装置 |
| JP2003071948A (ja) * | 2001-09-04 | 2003-03-12 | Yokohama Rubber Co Ltd:The | タイヤ成形装置における部材圧着装置 |
| JP2003191349A (ja) * | 2001-12-28 | 2003-07-08 | Sumitomo Rubber Ind Ltd | タイヤ製造方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1688241A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8029632B2 (en) * | 2005-11-16 | 2011-10-04 | Continental Ag | Method for producing a belt package for a pneumatic vehicle tire |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602004027526D1 (de) | 2010-07-15 |
| CN1871119A (zh) | 2006-11-29 |
| EP1688241A1 (en) | 2006-08-09 |
| CN1871119B (zh) | 2010-06-16 |
| EP1688241A4 (en) | 2007-09-26 |
| JP3716263B2 (ja) | 2005-11-16 |
| JP2005153284A (ja) | 2005-06-16 |
| US20070034318A1 (en) | 2007-02-15 |
| EP1688241B1 (en) | 2010-06-02 |
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