WO2017116408A1 - Pneumatique à feuille de protection non annulaire pour zone de talon et procédés destinés à être utilisés avec une roue présentant un espace dans un bord de jante - Google Patents

Pneumatique à feuille de protection non annulaire pour zone de talon et procédés destinés à être utilisés avec une roue présentant un espace dans un bord de jante Download PDF

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Publication number
WO2017116408A1
WO2017116408A1 PCT/US2015/067785 US2015067785W WO2017116408A1 WO 2017116408 A1 WO2017116408 A1 WO 2017116408A1 US 2015067785 W US2015067785 W US 2015067785W WO 2017116408 A1 WO2017116408 A1 WO 2017116408A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
protective sheet
rim
pair
gap
Prior art date
Application number
PCT/US2015/067785
Other languages
English (en)
Inventor
Cesar Zarak
Brian Gannon
Original Assignee
Compagnie Generale Des Etablissements Michelin
Michelin Recherche Et Technique S.A.
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, Michelin Recherche Et Technique S.A. filed Critical Compagnie Generale Des Etablissements Michelin
Priority to PCT/US2015/067785 priority Critical patent/WO2017116408A1/fr
Priority to PCT/US2016/068816 priority patent/WO2017117184A1/fr
Priority to CN201680077451.2A priority patent/CN108473007B/zh
Publication of WO2017116408A1 publication Critical patent/WO2017116408A1/fr

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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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • 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
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/10—Seat rings for the tyre bead part, e.g. split
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/10—Seat rings for the tyre bead part, e.g. split
    • B60B25/12—Seat rings for the tyre bead part, e.g. split with integral flange part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/14—Locking means for flange rings or seat rings
    • B60B25/18—Arrangement of split rings
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C2015/0614—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the chafer or clinch portion, i.e. the part of the bead contacting the rim
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C15/0628—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer
    • B60C2015/065—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer at the axially outer side of the carcass turn-up portion not wrapped around the bead core
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C15/0628—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer
    • B60C2015/0692—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer characterised by particular materials of the cords

Definitions

  • This invention relates generally to pneumatic tires, and methods for using pneumatic tires with wheels.
  • 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, can have a gap along a rim-flange that can decrease the life of the tire.
  • the gap is also referred to as a void or spacing.
  • a gap is generated by opposing ends of a rim-flange, the opposing ends forming terminal ends of a discontinuous ring, the ring extending annularly from one terminal end to the other terminal end. The terminal ends are closely spaced to form the ring, but are spaced apart to form a gap in the ring.
  • the rim-flange is attached to a central barrel of the wheel after the tire has been installed upon the central barrel for the purpose of constraining the tire on the central barrel and complete installation of the tire on the wheel.
  • Multi-piece wheels can form a two-piece wheel, where one of the pair of rim-flanges is a single annular component separable from the wheel, or a three-piece wheel, where one of the pair of rim- flanges comprises two annular components each being separable from the wheel.
  • scrap rubber such as used tire tubes
  • tire life is impacted as the scrap rubber migrates into the gap from its installed arrangement between the rim-flange and the tire.
  • Embodiments of the present invention include a non-annular protective sheet for use along a bead area of a pneumatic tire, a pneumatic tire employing at least one non-annular protective sheet, a method of using the pneumatic tire with a multi-piece wheel, and a method for forming the pneumatic tire.
  • the method of installing a tire onto a wheel having a gap along a rim-flange thereof includes providing a wheel having a central barrel and a pair rim-flanges extending radially outward from the central barrel, where at least one of the rim-flanges has a gap.
  • the method further includes providing a pneumatic tire, the tire having a pair of beads, a pair of sidewalls, and a central portion arranged between the pair of sidewalls and including a tire tread having an outer, ground-engaging side, the pair of beads each arranged in a bead area of the tire, each bead area forming an inner-radial portion of the tire from which one of the pair of sidewalls extend radially outward to the central portion, each pair of beads with each associated bead area and pair of sidewalls being spaced apart axially along a rotational axis of the tire, and a protective sheet arranged along an external side of one of the bead areas of the tire at a location where the tire will be arranged adjacent the gap in one rim-flange of the pair of rim-flanges, the protective sheet being non-annular and including a plurality of elongate reinforcements arranged within an elastomeric matrix within a thickness of the protective sheet.
  • the method also includes mounting the tire onto
  • Embodiments of the pneumatic tire include a pair of beads, a pair of sidewalls, and a central portion arranged between the pair of sidewalls and including a tire tread having an outer, ground-engaging side.
  • the pair of beads are each arranged in a bead area of the tire, each bead area forming an inner-radial portion of the tire from which one of the pair of sidewalls extend radially outward to the central portion.
  • Each pair of beads with each associated bead area and pair of sidewalls are spaced apart axially along a rotational axis of the tire.
  • the pneumatic tire also includes a protective sheet arranged along an external side of one of the bead areas of the tire at a location where the tire will be arranged adjacent to a gap in one rim-flange of the pair of rim-flanges, the protective sheet being non-annular and including a plurality of elongate reinforcements arranged within an elastomeric matrix within a thickness of the protective sheet.
  • FIG. 1 is a perspective view of an exemplary two-piece multi-piece wheel having a gap in a rim-flange.
  • FIG. 2 is a perspective view of the multi -piece wheel of FIG. 1.
  • FIG. 3 is a sectional view of an exemplary three-piece multi-piece wheel with a tire mounted thereon, the tire having a protective sheet in accordance with an embodiment of the invention.
  • FIG. 4 is a top view of a non-annular protective sheet for use in a bead area of a tire, in accordance with an embodiment of the invention.
  • FIG. 5A is a sectional view of the protective sheet of FIG. 2 taken along line
  • FIG. 5B is sectional view showing an alternative embodiment of the protective sheet of FIG. 5A.
  • FIG. 6 is a side view of a tire having the protective sheet of FIG. 4 arranged along a bead area of the tire, in accordance with an embodiment of the invention.
  • FIG. 7 is a side view of the tire of FIG. 6 installed on the multi-piece wheel of FIG. 1.
  • FIG. 8A is a sectional view of the tire of FIG. 7, taken along line 8A-8A.
  • FIG. 8B is a sectional view of the tire of FIG. 8A additionally including an annular chafer (protective bead area) ply arranged along the bead area.
  • Embodiments of the present invention comprise non-annular protective sheets for use along a bead area of a pneumatic tire, pneumatic tires employing at least one non-annular protective sheet, methods of using the pneumatic tire with a multi-piece wheel, and methods for forming the pneumatic tire.
  • non-annular protective sheet and pneumatic tires employing one or more of said protective sheets improved tire life is achieved when using the pneumatic tires with a wheel having a gap in a rim-flange thereof.
  • the currently employed annular bead area protective ply may not only be eliminated.
  • a method of installing a tire onto a wheel having a gap along a rim-flange thereof includes providing a wheel having a central barrel and a pair rim-flanges extending radially outward from the central barrel, where at least one of the rim-flanges has a gap.
  • Wheels upon which pneumatic tires are mounted generally include a central barrel and a pair of rim-flanges spaced axially along the central barrel and between which a tire is installed. Each rim-flange extends radially outward from the central barrel by a radial height.
  • certain wheels can have a gap along one or both pairs of rim-flanges.
  • the gap is also referred to as a void or spacing.
  • multi-piece wheels include this gap arranged along one rim-flanges, the rim-flange being separable from the wheel and positionable between installed and uninstalled arrangements.
  • the gap is generated by opposing ends of the separable rim-flange, the opposing ends forming terminal ends of a discontinuous ring, the ring extending annularly from one terminal end to the other terminal end.
  • the terminal ends are closely spaced to form the ring, but are spaced apart to form a gap in the ring. It is noted that the span of the gap can vary between wheel manufactures.
  • the width (span) of the gap annularly along the ring is as much as 20 millimeters (mm), and in certain variations, ranges from 5 mm to 20 mm. It is appreciated that the gap may be even greater than 20 mm.
  • the gap also has a radial height, which may be equal to or less than a radial height of the rim-flange.
  • the rim-flange is installed along a central barrel of the wheel after the tire has been installed upon the central barrel for the purpose of constraining the tire on the central barrel and complete installation of the tire on the wheel.
  • Multi-piece wheels can form a two-piece wheel, where one of the pair of rim-flanges is a single annular component separable from the wheel, or a three-piece wheel, where one of the pair of rim-flanges comprises two ring components each being separable from the wheel, where at least one of the two ring components has a gap.
  • one of the two ring components is a lock ring that has a gap and the other ring is a continuous ring without a gap.
  • a method of installing a tire onto a wheel having a gap along a rim-flange thereof particular embodiments of said method include providing a pneumatic tire.
  • the tire includes a pair of beads, a pair of sidewalls, and a central portion arranged between the pair of sidewalls and including a tire tread having an outer, ground-engaging side.
  • the pair of annular beads are spaced apart in an axial direction of the tire, where a radial center of each annular bead is arranged along a common axis, namely, the rotational axis of the tire.
  • Each bead may form any bead used in the art of forming pneumatic tires or known to one of ordinary skill in the art, or any obvious variation thereof.
  • a bead may be formed of one or more rubber-coated metal wires wound one or more revolutions to form a ring having a cross-section formed of a plurality of wires.
  • rubber connotes any natural or synthetic rubber or rubber blend.
  • a bead filler is commonly placed atop (that is, on the radially outer side of) each bead, the bead filler being made of any suitable material known within the industry, such as, an elastomeric or rubber material.
  • One or more body plies may also be arranged to extend downward from a central portion of the tire to partially wrap around the bead.
  • a body ply extends radially inward from the central portion and along a sidewall to an axially-inner side of the bead and then to a location below a radially inward side, or bottom side, of the bead. From the bottom side of the bead, the body ply extends radially outward along an external side of the tire to a terminal location along the tire sidewall.
  • Each bead of the pair of beads is arranged in a bead area of the tire, where each bead area forms an inner-radial portion of the tire from which one of the pair of sidewalls extend radially outward to the central portion.
  • the bead area is generally a portion of the tire within which a bead is arranged.
  • a bead area as used herein is defined to extend radially outward from the innermost radial location of the tire (also referred to as the bottom side of the bead area), located adjacent to and radially inward from a tire bead, and to the top of a bead filler arranged atop the bead within a thickness of the tire.
  • a rim-flange area configured to be arranged adjacent to a rim-flange of a wheel upon which the tire is mounted.
  • the rim-flange area as used herein is defined to extend radially outward from the innermost radial location of the tire, located adjacent to and radially inward from a tire bead, and to the top of an area configured for adjacent arrangement to a rim-flange of a wheel, the area extending to the radial height of the rim- flange.
  • the entire rim-flange may not be adjacently arranged to the tire, as a portion of the rim-flange may extend outwardly from the tire (such as, from the top of the rim-flange area of the tire), where this outwardly extending portion of the rim-flange is not necessarily arranged adjacent to the tire.
  • the rim-flange area is an area of the tire that a portion of the rim-flange will engage or contact the tire when the tire is mounted on the wheel and/or during tire/wheel operation.
  • the rim-flange area is particularly contoured to receive a rim-flange of a wheel.
  • the external side of the bead area includes the area of the tire along which a wheel rim-flange is intended to be adjacently arranged, the external bead area being arranged axially outward from the associated bead.
  • the central portion is annular and forms the portion of the tire arranged between a pair of tire sidewalls.
  • the central portion includes a tire tread having an outer, ground-engaging side, and may include a belt extending annularly around the tire and comprising one or more belt plies.
  • the belt plies each comprise a sheet of elastomeric material reinforced with elongate reinforcements, such as cord or cable.
  • the tire also includes a protective sheet arranged along an external side of one of the bead areas of the tire at a location where the tire will be arranged adjacent the gap on one of the pair of rim-flanges.
  • the protective sheet is non-annular, meaning it does not extend completely around the tire. Instead, it is sized and shaped for local application to the location of the bead area to be adjacently-aligned with the gap of a rim-flange, that is, in other words, within the rim-flange area of the tire at a location to be arranged adj acent to the gap within the rim-flange.
  • the protective sheet is at least sized to span the width of the gap but without extending substantially around the tire, and in particular embodiments, having a length not greater than (that is, equal to or less than) 15%, 10%, 5%, or 3% around the tire.
  • the width of the gap extends in an annular direction of the wheel.
  • the arrangement of reinforcements within the non-annular protective sheet is sized to at least span the width of the gap.
  • the arrangement of reinforcements spans a length of no more than 60 mm and a width of 55 mm or less or 25 to 55 mm. While the reinforcements may be as long as the sheet length, in particular variations, the reinforcements are shorter than the length of the non-annular protective sheet.
  • the length of the reinforcements are up to 80% or 66% of the length of the non-annular protective sheet.
  • the non-annular protective sheet has a length equal to or less than of 90 mm or 75 mm.
  • the protective sheet also has a width extending in a widthwise direction perpendicular to both the length and thickness of the protective sheet, each of the length, width, and thickness extending in directions perpendicular to one another.
  • the protective sheet width partially or fully spans the radial height of the gap.
  • the width of the reinforcement arrangement may be less than, equal to, or greater than the radial height of the rim-flange area of the bead area of the tire and/or the radial height of the gap in the rim- flange, and may be equal to or less than the width of the non-annular protective sheet.
  • the width of the reinforcement arrangement is up to 80% or 66% the width of the non-annular protective sheet.
  • the non-annular protective sheet has a width equal to or less than 83 mm or 69 mm.
  • a non-annular protective sheet having a length of 75 mm with reinforcements having a length of 60 mm and a width of 45 mm with the arrangement of reinforcements spanning a width of 30 mm is used with a tire characterized as having a bead area having a circumference of approximately 1600 mm, although this sized protective sheet may be used on tires greater or lesser in size. It is appreciated that the length of all reinforcements within a non-annular protective sheet may all be the same length or one or more of the plurality of reinforcements may be of different lengths.
  • the non-annular protective sheet is sized to cover an area not greater than 7,500 square millimeters (mm 2 ), such as where, for example, the protective sheet length is 90 mm and the width is 83 mm.
  • the protective sheet may form any shape, so long as it is sized as described herein.
  • the protective sheet forms a rectangle or an oval.
  • the length of the protective sheet extends in a direction perpendicular to a radial direction of the tire while the width of the protective sheet extends in the radial direction of the tire, or vice versa in other instances.
  • the protective sheet is formed and arranged to locally protect the tire from the gap and the structure forming the gap in a rim-flange.
  • the protective sheet is formed of an elastomeric material, such as rubber, and reinforced with a plurality of elongate reinforcements arranged within a thickness of the protective sheet.
  • the plurality of elongate reinforcements are arranged within an elastomeric matrix within a thickness of the protective sheet. Any suitable elongate reinforcement may be employed.
  • the elongate reinforcements are made of steel, and may take the form of wire or cable.
  • the elongate reinforcements are made of aramid, and may take the form of a strand or cord.
  • the elongate reinforcement may comprise any reinforcement arranged within any tire reinforcement ply, such as a body ply or belt ply reinforcement.
  • the strongest ply used in a particular tire construction is used to form the non- annular protective sheet.
  • Exemplary arrangements of reinforcements include arranging reinforcements in a spaced-apart, parallel arrangement, where the reinforcements are spaced apart, centerline to centerline, from 1.4 mm to 2.5 mm, where the reinforcements have a diameter upwards of 0.3 mm, such that elastomeric material fills the 0.5 mm to 1.5 mm between the reinforcements.
  • the reinforcements have diameters up to 0.7 mm to 1.3 mm, where elastomeric material fills up to 0.5 mm to 1.5 mm between adjacent, spaced-apart reinforcements.
  • the reinforcements may be molded within a thickness of elastomeric material or may be coated with elastomeric material forming the thickness of the protective sheet.
  • the plurality of reinforcements are arranged within a one or more plies each including one or more reinforcements arranged within an elastomeric matrix. The one or more plies may form the non-annular protective sheet, or may be arranged with one or more sheets of elastomeric material.
  • one or more reinforced plies are arranged between a pair of elastomeric sheets (which may or may not include any other reinforcements).
  • the reinforced ply is 1.2 mm thick and each of a pair of elastomeric sheets arranged an opposing sides of the reinforced ply are 0.5 mm thick to provide a non-annular protective sheet having a thickness of 2.2 mm.
  • the thickness of the non-annular protective sheet is up to 4 mm.
  • the plurality of elongate reinforcements may be arranged in any desired arrangement within the protective sheet.
  • the plurality of elongate reinforcements are arranged parallel to each other, to form an array of elongate reinforcements.
  • Other arrangements are contemplated, such as where the plurality of elongate reinforcements are arranged to provide a cross-woven arrangement.
  • Cross-woven may form an over and under woven pattern, where reinforcements alternate overtop and below other reinforcements in a woven arrangement, or may simply provide an overlay of one or more reinforcements over other reinforcements.
  • the cross-woven arrangement of reinforcements utilize aramid.
  • the protective sheet may include one or more identifiers, such as colored and/or raised or sunken text, symbols, or images, or any combination thereof, to indicate placement, use, or orientation of the protective sheet relative a tire or a wheel. Any such identifiers may also be used to identify the location of the reinforcements within the protective sheet, to ensure proper arrangement of the reinforcements relative a gap on a wheel rim-flange.
  • the one or more identifiers maybe formed and arranged in any sufficient manner, such as, for example, by printing onto the protective sheet, molding with the protective sheet, or affixing to the protective sheet with an adhesive.
  • the protective sheet may be applied to the tire and installed in uncured or cured forms.
  • the protective sheet is installed on the tire during a tire assembly process and before the tire is cured. In such instances, the protective sheet forms a portion of an original tire.
  • the protective sheet is uncured at the time of installation, and is later cured with the tire during a vulcanization process.
  • the protective sheet is installed on a cured tire, that is, after the tire has been cured. In such instances, the protective sheet forms an accessory attachment on an original tire.
  • the protective sheet may applied in a precured form or uncured form, and in either case applied using a bonding agent, such as an adhesive or bonding rubber. When applied in an uncured form, it may be subsequently cured using a vulcanization process while attached to the cured tire.
  • Particular embodiments of the methods for installing a tire onto a wheel having a gap along a rim-flange thereof includes a step of mounting the tire onto the wheel such that the protective sheet spans (extends across) a width of the gap of one rim-flange of the pair of rim-flanges.
  • the plurality of elongate reinforcements, or the arrangement of reinforcements are arranged to span (extend across) the width of the gap.
  • the plurality of elongate reinforcements are arranged to extend lengthwise across the gap.
  • the tire may be installed on the multi-piece wheel in accordance with any known manner or obvious variation thereof, so long as the protective sheet or reinforcements within said sheet are arranged to span the width of a gap along the separable rim-flange.
  • the protective sheet and/or the arrangement of elongate reinforcements within the sheet are also arranged to partially or fully span a radial height of the gap arranged within a rim-flange area of the tire. It is appreciated that the protective sheet may be arranged in any desired configuration relative to the wheel.
  • the tire is mounted onto the wheel such that the plurality of elongate reinforcements are arranged to extend in a direction substantially parallel to a line extending through and perpendicular to the rotational axis of the tire.
  • each, or one or more, elongate reinforcements of the protective sheet are arranged perpendicular to a radius extending from the rotational axis A or tangent to a circle for which the rotational axis is the origin.
  • the non-annular protective sheet may be arranged such that the reinforcements are oriented at any other angle relative to the radial direction of the tire or wheel.
  • a pneumatic tire employs a protective sheet within the bead area of the tire
  • the tire is free of an annular reinforced bead area ply.
  • tires commonly including an annular reinforced bead area ply arranged along the external side of each bead area may eliminate use of said annular reinforced bead area ply when employing the use of the protective sheet.
  • the annular reinforced bead area ply is arranged along the bead area and extends radially outward from a first terminal end arranged adjacent the bead and to a second terminal end arranged radially outward from the first terminal end. The second terminal end may be located along the external portion of the bead area or of the sidewall.
  • An annular reinforced bead area ply is commonly referred to as a chafer ply.
  • FIGS. 1 and 2 an exemplary multi -piece wheel 10 is shown, the wheel being a two-piece wheel.
  • Wheel 10 includes a pair of rim-flanges 12, 16. Rim-flange 16 is fixed while rim-flange 12 is separable from the wheel 10, and more specifically, from central barrel 18. This is more clearly shown in FIG. 2, where a separable rim-flange 12 is shown in association with a central barrel 18.
  • Each rim-flange 12, 16 has a radial height HRF. Rim flange height HRF extends radially outward from the central barrel 18, or more generally from a location where the tire sits on the wheel. As best shown in FIG.
  • rim-flange 12 includes opposing terminal ends E i2 that are closely spaced apart to form a gap 14, which extends the full radial height H RF of the rim-flange (at least locally).
  • a three-piece wheel 110 is shown in association with a pneumatic tire 20, where the separable rim-flange 112 comprises two (first and second) ring components 112A, 112B, which are annular or substantially annular. Separable rim-flange 112 also includes a gap (not shown) similar to the gap 14 shown in FIG.
  • an exemplary protective sheet 30 is shown, which is non-annular and rectangular in shape, having a length L 30 greater than its width W30 and thickness T30. Exemplarily lengths and widths have been described previously above, any of which may be employed with sheet 30.
  • Protective sheet 30 includes a plurality of elongate reinforcements 34 arranged within elastomeric material forming an elastomeric matrix 32. The plurality of elongate reinforcements 34 can be said to form an arrangement of reinforcements 35. In the embodiment shown, the arrangement has a length L 35 and a width W35.
  • the elastomeric matrix in any embodiment may be formed of one or more elastomers, and may be homogeneous or heterogeneous, and may be molded and/or formed of layers.
  • the plurality of elongate reinforcements 34 are each arranged to extend in a lengthwise direction of the protective sheet 30 and parallel to each other in an array.
  • the plurality of elongate reinforcements 34 are spaced apart by a spacing distance S30, which is uniform in the embodiment shown but may be non-uniform in other variations. Exemplary spacings are discussed previously above.
  • the reinforcements are shown to be arranged entirely within the thickness T2 0 , but may be arranged partially within the thickness and along an exterior surface of the protective sheet in other variations of any protective sheet.
  • the plurality of elongate reinforcements 134 are arranged within an elastomeric matrix 132 to form of a ply of reinforced elastomeric material 131, which may comprise any reinforced ply used to form any other component within a tire, for example, where the ply 131 is arranged between a pair of elastomeric plies 136 to form the non-annular protective sheet.
  • Width W130 of the protective sheet and width W135 of the arrangement of reinforcements are also shown for reference.
  • any protective sheet contemplated herein is arranged on the external side of the bead area of a tire.
  • the protective sheet 30 of FIGS. 4 and 5 is shown arranged along tire 20, and more specifically along an external side OS2 0 of bead area 24.
  • Interior side IS2 0 is arranged along the interior of the tire.
  • bead area 24 includes a bead 21 and a bead filler 22 arranged atop the bead and extending radially outward toward a sidewall 26 and away from a rotational axis A of the tire, where, with reference to FIG.
  • a tire sidewall 26 extends radially outward from the associated bead area and to an annular, central portion 28 of the tire, which includes a tire tread 29.
  • a body ply 23 is also shown extending downward/inward from the central portion of the tire to partially wrap around the bead 21. Specifically, the body ply 23 extends radially inward along a sidewall 26 to an axially-inner side IS2 0 of the bead and then to a location below a radially inward side, or bottom side, of the bead. From the bottom side of the bead, the body ply 23 extends radially outward along an external side OS2 0 of the tire to a terminal location along the tire sidewall 26.
  • bead area 24 extends radially outward from the innermost radial location of the tire, or bottom side BS2 0 , located adjacent to and radially inward from a tire bead, and to the top of bead filler 22 arranged atop bead 21.
  • a rim- flange area RFA 2 o Located within the bead area 24 is a rim- flange area RFA 2 o, which is an area of the tire configured to be arranged adjacent to, and/or configured to receive a rim-flange of a wheel when the tire is mounted on the wheel.
  • the rim-flange area RFA 2 o extends radially outward from the innermost radial location of the tire BS 20 , located adjacent to and radially inward from a tire bead 21, and to the top of an area configured for adjacent arrangement next to a rim-flange of a wheel, the area extending to the radial height of the rim-flange of the wheel.
  • the protective sheet 30 is arranged in bead area 24 and within rim-flange area RFA 20 , and has a width W30 extending radially outward from bottom side BS 20 to span the height of rim- flange area RFA 20 .
  • the protective sheet width W30 spans a full height of the rim-flange area RFA 20 and therefore spans the rim-flange gap height W14 (not shown, but see FIG. 7), while the arrangement 35 of elongate reinforcements partially spans the height of rim-flange area RFA 20 and the rim-flange gap height H14 of wheel 10.
  • a width W30 of protective sheet 30 spans a height of the rim-flange area RFA 20 and therefore spans the rim-flange gap height W14 (not shown, but see FIG. 7), while the arrangement 35 of elongate reinforcements also fully spans the height of rim-flange area RFA 20 and the gap arranged in rim-flange ring 112B of wheel 10.
  • the pneumatic tire is free of an annular reinforced bead area ply that is otherwise commonly incorporated into an pneumatic tire.
  • the tire is free of an annular reinforced bead area ply.
  • pneumatic tire 20 includes an annular reinforced bead area ply 25, which has a width W25 extending radially outward from the rim- flange area (see RFA 20 in FIG. 8A).
  • the protective sheet is aligned with the gap on a rim-flange such that the protective sheet spans the width of the gap.
  • the tire 20 of FIG. 6 is arranged along the wheel 10 of FIG. 1, where non-annular protective sheet 30 is aligned with gap 14 in separable rim-flange 12.
  • the non-annular protective sheet 30 is arranged such that the plurality of elongate reinforcements 34 arranged in the sheet extend across (span) gap 14, and more specifically, across a width W14 of gap 14. Also, in association with FIGS.
  • the width of the arrangement 35 of reinforcements 34 extends partially along the height H14 of gap 14.
  • a width W30 of protective sheet 30 spans a height of the rim-flange area RFA 20 and therefore spans the rim-flange gap height W14 (not shown, but see FIG. 7), while the arrangement 35 of elongate reinforcements also fully spans the height of rim-flange area RFA 2 o and the gap arranged in rim-flange ring 112B of wheel 10.
  • the arrangement 35 of reinforcements extends beyond the height of the gap arranged in rim- flange ring 112B and substantially the full height of the rim-flange 112, such that in other variations, the arrangement of reinforcements may extend less than the height of rim-flange 112 when spanning the substantial full height of a gap in rim-flange ring 112B.
  • tire 20 is mounted onto wheel 10 such that each elongate reinforcement of the plurality of elongate reinforcements 34 in the protective sheet 30 are arranged to extend in a direction substantially parallel to a line 40 extending through and perpendicular to the rotational axis A of the tire.
  • one or more elongate reinforcements of the protective sheet are arranged perpendicular to a radius extending from the rotational axis A or tangent to a circle for which the rotational axis is the origin.
  • the protective sheet or the arrangement of reinforcements arranged therein may extend up to or beyond the full width or height, and in extending up to the full width or height may substantially span or extend up to the full or partial height, where substantially connotes a difference of up to 5 percent or to up to 10 percent from the full width or height, or the full dimension of any other dimension referenced herein.
  • any such pneumatic tire is formed by:
  • each one or more body plies comprising a sheet of elastomeric material reinforced with elongate reinforcements
  • the protective sheet may be formed during assembly of the uncured tire assembly at a tire building machine, or after being assembled at a tire building machine but prior to curing.

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

Abstract

Des modes de réalisation de l'invention comprennent un pneumatique (20) et un procédé d'installation d'un pneumatique (20) sur une roue (10) comprenant un espace (14) le long d'un bord de jante (12, 16) de cette dernière. Des modes de réalisation particuliers du procédé comprennent la fourniture d'une roue (10) comprenant un corps central (18) et une paire de bords de jante (12, 16), au moins l'un des bords de jante (12, 16) présentant un espace (14). L'invention concerne également un pneumatique (10), qui comprend une feuille de protection (30) agencée le long d'un côté externe d'une zone de talon (24) du pneu (20) au niveau d'un emplacement où le pneu (20) sera agencé adjacent à un espace (14) dans un bord de jante (12, 16) d'une roue (10), la feuille de protection (30) étant non annulaire et comprenant une pluralité de renforcements allongés (34) agencés à l'intérieur d'une matrice élastomère (32) à l'intérieur d'une épaisseur de la feuille de protection (30). Le procédé comprend en outre le montage du pneu (20) sur la roue (10) de sorte que la feuille de protection (30) couvre une largeur de l'espace (14) du bord de jante (12, 16).
PCT/US2015/067785 2015-12-29 2015-12-29 Pneumatique à feuille de protection non annulaire pour zone de talon et procédés destinés à être utilisés avec une roue présentant un espace dans un bord de jante WO2017116408A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/US2015/067785 WO2017116408A1 (fr) 2015-12-29 2015-12-29 Pneumatique à feuille de protection non annulaire pour zone de talon et procédés destinés à être utilisés avec une roue présentant un espace dans un bord de jante
PCT/US2016/068816 WO2017117184A1 (fr) 2015-12-29 2016-12-28 Pneumatique doté d'une feuille de protection non annulaire pour la zone de talon et procédés d'utilisation avec roue ayant un espace dans le rebord de jante
CN201680077451.2A CN108473007B (zh) 2015-12-29 2016-12-28 具有用于胎圈区域的非环形保护片的充气轮胎以及用于在轮缘中具有间隙的车轮的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2015/067785 WO2017116408A1 (fr) 2015-12-29 2015-12-29 Pneumatique à feuille de protection non annulaire pour zone de talon et procédés destinés à être utilisés avec une roue présentant un espace dans un bord de jante

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WO2017116408A1 true WO2017116408A1 (fr) 2017-07-06

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PCT/US2015/067785 WO2017116408A1 (fr) 2015-12-29 2015-12-29 Pneumatique à feuille de protection non annulaire pour zone de talon et procédés destinés à être utilisés avec une roue présentant un espace dans un bord de jante
PCT/US2016/068816 WO2017117184A1 (fr) 2015-12-29 2016-12-28 Pneumatique doté d'une feuille de protection non annulaire pour la zone de talon et procédés d'utilisation avec roue ayant un espace dans le rebord de jante

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB809575A (en) * 1956-10-12 1959-02-25 Firestone Tire & Rubber Co Improvements in tire and rim combination
US3009501A (en) * 1955-08-06 1961-11-21 Lemmerz Paul Wheel rim for tubeless tires
US3419061A (en) * 1966-08-22 1968-12-31 Toyo Tire & Rubber Co Tubeless tire
US3608607A (en) * 1969-09-08 1971-09-28 Goodyear Tire & Rubber Wheel rim with side ring connector
EP0114994A2 (fr) * 1983-01-28 1984-08-08 Continental Aktiengesellschaft Roue pour véhicules

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794062A1 (fr) * 1999-05-25 2000-12-01 Michelin Soc Tech Ensemble de montage d'un pneumatique sur un moyeu
FR2795023A1 (fr) * 1999-06-21 2000-12-22 Michelin Soc Tech Procede de demontage d'un pneumatique sur jante a sieges inclines vers l'exterieur
RU2247657C2 (ru) * 2000-09-22 2005-03-10 Сосьете Де Текноложи Мишлен Устройство формирования протектора на каркасе пневматической шины
CN1458001A (zh) * 2003-04-18 2003-11-26 刘昌梅 用垫带密气的载重无内胎轮胎
JP4190356B2 (ja) * 2003-06-11 2008-12-03 トピー工業株式会社 横装填ホイール
CN201009659Y (zh) * 2007-02-27 2008-01-23 亚猎士科技股份有限公司 轮圈
GB2480817A (en) * 2010-06-01 2011-12-07 Gkn Offhighway Ltd A vehicle wheel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009501A (en) * 1955-08-06 1961-11-21 Lemmerz Paul Wheel rim for tubeless tires
GB809575A (en) * 1956-10-12 1959-02-25 Firestone Tire & Rubber Co Improvements in tire and rim combination
US3419061A (en) * 1966-08-22 1968-12-31 Toyo Tire & Rubber Co Tubeless tire
US3608607A (en) * 1969-09-08 1971-09-28 Goodyear Tire & Rubber Wheel rim with side ring connector
EP0114994A2 (fr) * 1983-01-28 1984-08-08 Continental Aktiengesellschaft Roue pour véhicules

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CN108473007B (zh) 2020-08-28
CN108473007A (zh) 2018-08-31

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