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WO2018125047A1 - Pneu sans chambre à air - Google Patents

Pneu sans chambre à air Download PDF

Info

Publication number
WO2018125047A1
WO2018125047A1 PCT/US2016/068699 US2016068699W WO2018125047A1 WO 2018125047 A1 WO2018125047 A1 WO 2018125047A1 US 2016068699 W US2016068699 W US 2016068699W WO 2018125047 A1 WO2018125047 A1 WO 2018125047A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
annular sealing
sealing piece
pneumatic tire
bead
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
Application number
PCT/US2016/068699
Other languages
English (en)
Inventor
Cesar Enrique Zarak
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.)
Compagnie Generale des Etablissements Michelin SCA
Original Assignee
Compagnie Generale des Etablissements Michelin SCA
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 Compagnie Generale des Etablissements Michelin SCA filed Critical Compagnie Generale des Etablissements Michelin SCA
Priority to PCT/US2016/068699 priority Critical patent/WO2018125047A1/fr
Priority to PCT/US2017/068216 priority patent/WO2018125807A1/fr
Publication of WO2018125047A1 publication Critical patent/WO2018125047A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/12—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
    • B60C5/16—Sealing means between beads and rims, e.g. bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/12—Appurtenances, e.g. lining bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/511—Sealing
    • B60B2900/5116—Sealing against air-loss

Definitions

  • This invention relates generally to tires.
  • the present invention is directed to tubeless pneumatic tires having an annular sealing piece extending from bead portion to bead portion for sealing an internal inflation chamber.
  • Pneumatic tires may be mounted on a variety of different wheels.
  • Wheels generally include a central barrel and a pair of rim flanges spaced axially along the central barrel and between which a tire is installed.
  • Certain wheels, such as multi-piece wheels, are easily disassembled by removing a rim flange, which may form a single component or multiple components. Upon disassembling, a tire may be easily mounted on the wheel, after which the rim flange is reinstalled for use.
  • annular sealing pieces may be attached to both bead portions as disclosed in European Patent EP1345783 or attached to only one bead portion as disclosed in international application WO2016/039777.
  • the present invention provides for a pneumatic tire comprising: a crown portion;
  • each sidewall extending radially outward from a respective bead portion to the crown portion;
  • annular sealing piece configured to extend from one bead portion to the other bead portion to provide an air-tight inflation chamber when said tire is mounted and inflated on a wheel;
  • annular sealing piece is non-permanently bonded to at least one of the bead portions.
  • the annular sealing piece is bonded to the at least one of the bead portions using an adhesive.
  • the annular sealing piece is bonded to the at least one of the bead portions using a non-permanent adhesive.
  • said non-permanent adhesive has a peel strength between 10 and 65 pounds/inch.
  • said non-permanent adhesive has a peel strength between 20 and 40 pounds/inch.
  • said non-permanent adhesive is a silicone base adhesive.
  • the annular sealing piece comprises an inflation valve base adapted for receiving a removable valve stem.
  • the inflation valve base has an orifice inner diameter greater than 8mm.
  • the annular sealing piece is bonded to both bead portions of the tire. [0017] In an embodiment, the annular sealing piece is bonded to only one bead portion of the tire.
  • the annular sealing piece is bonded to the at least one of the bead portions using cooperating shapes.
  • FIG. 1 is a perspective section view showing a tire with an annular sealing piece according to the invention.
  • FIG. 2 is a perspective section view showing the annular sealing piece detached from the tire of FIG. 1.
  • FIG. 3 is a partial section view showing in more detail a tire according to the invention mounted onto a multi-piece wheel.
  • FIG. 4 is a partial section view showing in detail a tire according to the invention in un-mounted state.
  • FIG. 5 is a partial section view showing in detail a tire according to the invention using an inner tube.
  • FIG. 6 is a partial section view showing in detail another embodiment of the tire according to the invention.
  • FIG. 7 is a partial section view showing the principle of yet another embodiment of the tire according to the invention.
  • the present invention provides for a tire with an annular sealing piece where the annular sealing piece can be detached from the tire without damaging the tire or the sealing piece. The tire can then be readily repaired, flipped sides or otherwise worked on and the sealing piece can later be reattached to the tire before the tire is mounted onto a wheel.
  • the non-permanent bonding between the sealing piece and the tire can be realized by using any applicable non-permanent bonding means like for example non-permanent adhesives or cooperating shapes.
  • a pneumatic tire 1 has a pair of bead portions 11 and 12, a pair of sidewalls 13 and 14, a crown portion 15 and an annular sealing piece 20.
  • the annular sealing piece has a generally tubular body 21 extending between the two tire bead portions.
  • the annular sealing piece has a first end flange and a second end flanges designed to be wrapped around the bead portions.
  • the first end flange 22 is attached to the first bead portion 11.
  • the second end flange 23 is not attached to the second bead portion 12.
  • the annular sealing piece is flexible enough to allow for limited access to the inner portion of the tire.
  • the annular sealing piece has an inflation valve 30.
  • the annular sealing piece 20 When the tire is mounted onto a wheel and inflated, the annular sealing piece 20 provides its sealing function.
  • the tire inner cavity 10 becomes airtight even when mounted onto a non-airtight wheel such as a conventional multi-piece wheel. Hence the tire can be mounted tubeless on a non-airtight wheel.
  • the annular sealing piece 20 is non-permanently bonded to the tire. Once the tire is separated from the wheel, the annular sealing piece can be detached from the rest of the tire without any permanent damage to either itself or the tire bead portions.
  • FIG. 2 shows in the same section view as in FIG. 1 the annular sealing piece 20 detached from the rest of the tire.
  • the first edge flange 22 that was attached to the first bead portion of the tire is now detached from it.
  • the separation of the non-permanent bond occurs with no damage and the annular sealing piece can be re-used if necessary.
  • FIG. 3 shows in more detail the cooperation of the tire 1 with a multi-piece wheel 50.
  • the radial plane of this section view goes through the center of the inflation valve 30.
  • the multi-piece wheel of this example has a rim 51 welded onto a wheel disk 52.
  • a removable rim flange 53 in the form of an open ring is held in abutment against an annular stop 54 of the rim.
  • the inflation pressure inside the tire cavity 10 is pushing the bead portions 11, 12 away from each other.
  • the bead portions are pressed against the rim flanges thereby forcing the bead portions 11, 12 into an airtight contact with the annular sealing piece.
  • the necessary sealing force is provided by the inflation tire pressure.
  • the non-permanent bond 40 between the annular sealing piece and the first bead portion 11 is not required to be airtight itself. Bonding of the second bead portion to the annular sealing piece is also not necessary to create an airtight tire cavity.
  • an inflation valve 30 is provided to control the inflation pressure of the inner cavity 10 of the tire.
  • a valve spud 31 attached to the annular sealing piece comprises a valve base 32 intended to be accessible through a valve slot 55 of the wheel.
  • a removable elbowed valve stem 35 allows access to the inflation valve from outside the wheel when the wheel is fitted to a vehicle.
  • a valve slot covering plate 56 can be attached to the valve base by a valve nut 33.
  • the annular sealing piece 20 can be made of rubber.
  • the non-permanent bond 40 can use an adhesive that has sufficient bonding strength to resist the forces that affect the tire and the annular sealing piece during fitting and normal operation of the tire.
  • This adhesive must allow separation of the annular sealing piece from the tire bead portions without significant damage to the tire or to the annular sealing piece in order to allow reusing them.
  • Suitable adhesives are so-called “non-permanent” adhesives, that is to say adhesives that bond without causing a permanent change to the attaching surfaces. Therefore, the attached parts can be separated later without damage to said surfaces. The remains of the adhesive can be removed by peeling off or cleaned with a suitable cleaner. Since the surfaces are undamaged, they can be glued together again with fresh adhesive.
  • silicon base adhesives are preferred because of their flexibility.
  • FIG. 4 is a view similar to FIG. 3 but showing the tire separated from the wheel, thus not inflated.
  • first bead portion 11 is attached to the annular sealing piece by a non-permanently bond 40 while second bead portion 12 is not attached. It is clear from looking at this view that once the annular sealing piece 20 is peeled from the first tire bead portion 11, the tire can be flipped sides relative to the annular sealing piece. Then the second bead portion 12 can readily be bonded with new adhesive onto the same bonding surface 24.
  • a patch may be used in certain instances to make the repair.
  • This repair may require special equipment and expertise not present when and where the tire becomes damaged, which is often remote to a tire repair location. Due to the limited availability of spare wheels or the time and equipment required to tow a vehicle in for repair of the tire, it is desirous to avoid the reliance on these solutions when a vehicle having a damaged tire is too remote from a tire service location. Accordingly, there could be a need to provide temporary use of the damaged tire until it can be repaired.
  • FIG. 5 in combination with FIG. 4 discloses a preferred feature of the inflation valve base to address this potential need.
  • the size of the orifice 34 of the valve base 32 is preferably such that a valve stem of an inner tube can be inserted through it after the elbowed valve stem 35 has been removed from the valve base.
  • FIG. 5 shows the inner tube 60 installed inside the tire 1 and providing for an airtight inflation chamber 610.
  • the inner tube valve 62 has a stem 63 that goes through the orifice 34 of the valve base 32.
  • An orifice diameter of at least 8 mm allows for use of most conventional inner tubes having standard metallic valve stems.
  • a valve stem extension 70 can be attached to the tip 65 valve stem 63 of the inner tube.
  • FIG. 5 illustrates the tire-wheel assembly in an inflated state after application of the temporary inner tube solution and clearly shows that said tire-wheel assembly is functionally very similar to the tubeless configuration of FIG. 3.
  • FIG. 6 shows another embodiment of the tire 101 where the non-permanent bond between bead portions 111, 112 and the annular sealing piece 120 is using cooperating shapes, for instance compatible dovetail profiles.
  • Male dovetail profiles 1201 on the bonding surface 124 of the annular sealing piece 120 can be held in female dovetail profiles 1111 of the first bead portion 111.
  • the same male profiles 1201 can also cooperate with female dovetail profiles 1121 of the second bead portion 112 after flipping the tire.
  • FIG. 7 shows another embodiment where both bead regions are non-permanently bonded (see bonds 40, 41) to the annular sealing piece.
  • any other multi-piece wheel may be employed with the invention, including wheels where the removable rim flange comprises a plurality of ring components.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention concerne un pneu comprenant : une partie sommet ; une paire de parties talon (11, 12) ; une paire de flancs (13, 14), chaque flanc s'étendant radialement vers l'extérieur depuis une partie talon respective jusqu'à la partie sommet ; une pièce d'étanchéité annulaire (20) conçue pour s'étendre d'une partie talon à l'autre partie talon pour fournir une chambre de gonflage (10) étanche à l'air lorsque ledit pneu est monté et gonflé sur une roue ; la pièce d'étanchéité annulaire étant liée de manière non permanente (40) à au moins l'une des parties talon (11).
PCT/US2016/068699 2016-12-27 2016-12-27 Pneu sans chambre à air Ceased WO2018125047A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2016/068699 WO2018125047A1 (fr) 2016-12-27 2016-12-27 Pneu sans chambre à air
PCT/US2017/068216 WO2018125807A1 (fr) 2016-12-27 2017-12-22 Pneu sans chambre à air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/068699 WO2018125047A1 (fr) 2016-12-27 2016-12-27 Pneu sans chambre à air

Publications (1)

Publication Number Publication Date
WO2018125047A1 true WO2018125047A1 (fr) 2018-07-05

Family

ID=57799889

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2016/068699 Ceased WO2018125047A1 (fr) 2016-12-27 2016-12-27 Pneu sans chambre à air
PCT/US2017/068216 Ceased WO2018125807A1 (fr) 2016-12-27 2017-12-22 Pneu sans chambre à air

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2017/068216 Ceased WO2018125807A1 (fr) 2016-12-27 2017-12-22 Pneu sans chambre à air

Country Status (1)

Country Link
WO (2) WO2018125047A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3878663A1 (fr) * 2020-03-13 2021-09-15 Goodrich Corporation Ensemble de roue avec prise à fusible extérieure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002210B (de) * 1955-03-26 1957-02-07 Manfred Juengling Einlage fuer schlauchlose Reifen
GB787784A (en) * 1955-02-14 1957-12-18 Dunlop Rubber Co Improvements in or relating to sealing means for tubeless pneumatic tyres
DE1024384B (de) * 1955-05-07 1958-02-13 Friedrich W Heusinkveld Schlauchloser Reifen, insbesondere fuer Kraftfahrzeuge
DE3727051A1 (de) * 1987-08-13 1989-02-23 Sumitomo Rubber Ind Anordnung aus schlauchlosem reifen und radfelge fuer kraftraeder
EP1345783A1 (fr) 2000-12-22 2003-09-24 Société de Technologie Michelin Ensemble consitute d'un pneumatique et d'une piece d'etancheite et procede de fabrication
WO2016039777A1 (fr) 2014-09-12 2016-03-17 Compagnie Generale Des Etablissements Michelin Pièce d'étanchéité semi-intégrée pour pneus du type tube

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB787784A (en) * 1955-02-14 1957-12-18 Dunlop Rubber Co Improvements in or relating to sealing means for tubeless pneumatic tyres
DE1002210B (de) * 1955-03-26 1957-02-07 Manfred Juengling Einlage fuer schlauchlose Reifen
DE1024384B (de) * 1955-05-07 1958-02-13 Friedrich W Heusinkveld Schlauchloser Reifen, insbesondere fuer Kraftfahrzeuge
DE3727051A1 (de) * 1987-08-13 1989-02-23 Sumitomo Rubber Ind Anordnung aus schlauchlosem reifen und radfelge fuer kraftraeder
EP1345783A1 (fr) 2000-12-22 2003-09-24 Société de Technologie Michelin Ensemble consitute d'un pneumatique et d'une piece d'etancheite et procede de fabrication
WO2016039777A1 (fr) 2014-09-12 2016-03-17 Compagnie Generale Des Etablissements Michelin Pièce d'étanchéité semi-intégrée pour pneus du type tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3878663A1 (fr) * 2020-03-13 2021-09-15 Goodrich Corporation Ensemble de roue avec prise à fusible extérieure

Also Published As

Publication number Publication date
WO2018125807A1 (fr) 2018-07-05

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