A tire or other rubber item is described that has a surface such as a sidewall. A region on the surface includes a plurality of protrusions. The protrusions are positioned in a pseudo-random pattern within the region. Various features of the protrusions may be varied in a random or pseudo-random manner.
A process for producing a functionalized polymer includes reacting a condensation suppressant comprising an alkoxysilane with an aminosilane functionalized polymer to form a stable functionalized polymer in the polymer cement.
A tire tread suited to use in drive tires for long-haul freight trucks is formed from a vulcanizable rubber composition including 100 phr of an elastomer component which includes natural rubber and a polydiene rubber, at least 40 phr of carbon black, and a curative system including a sulfur-based curing agent, a zinc-based cure activator, an organic cure activator, and a combination of cure accelerators. The cure accelerators include (i) a sulfenamide accelerator, (ii) a metal dithiocarbamate accelerator, and (iii) at least one of a thiazole polysulfide accelerator and a thiuram polysulfide accelerator.
The invention is directed to a tire comprising an innerliner including a recess with a depth within a range of 20 μm to 3000 μm and a stepped sidewall, wherein at least one step of the recess' sidewall includes a height within a range of 5 μm to 1500 μm. Furthermore, the invention is directed to a method of processing a tire including an inner surface, wherein the method comprises creating a stepped recess in an area of the inner surface by removing a first thickness of elastomer composition in a first subarea, removing a second thickness of elastomer composition in a second subarea, wherein the second subarea at least partially overlaps with the first subarea so that a third thickness of elastomer composition is removed in an overlapping zone of the first subarea and the second subarea.
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
In one aspect, the present invention is directed to a tire comprising a circumferential tread portion and an inner surface partially enclosing a tire cavity, as well as a circumferential sealant layer at least partially provided on the inner surface radially below the tread portion. Furthermore, the tire comprises a first electrically conductive layer at least partially covering a surface of the sealant layer, and a second electrically conductive layer being non-conductively separated from the first electrically conductive layer. A sensor system of the tire is in separate electrical contact with the first electrically conductive layer and the second electrically conductive layer, wherein the sensor system is further configured to detect an increase in electrical conductivity or a short-circuit between the first electrically conductive layer and the second electrically conductive layer.
Disclosed are examples related to PCB impedance tuning for wideband operation and acceptance of antenna variation. In one example, a tire monitoring device includes a sensor, RFID circuitry and processing circuitry mounted on a PCB. The RFID circuitry can harvest energy and transmit monitored tire data in response to a received interrogation signal. The RFID circuitry can be tuned to receive interrogation signals in a frequency band from at least 868 MHz to at least 915 MHz to cover both NA and EU applications. Impedance matching of the RFID circuitry can enable operation independent of variations in coil antenna length. In another example, comprises the tire monitoring device and a RFID reader or interrogator.
B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
A tire tread and a pneumatic tire including the tread are described. The tread is formed from a vulcanizable rubber composition, which includes 50-70 phr of polybutadiene rubber, 30-50 phr of a solution-polymerized styrene butadiene rubber with a styrene content of 5-15 wt. % and a Tg of −70° C. to −50° C., at least 100 phr of silica, at least 6 parts by weight per hundred parts of the silica of an organosilane coupling agent, at least 2 phr of processing oil, at least 40 phr of resin, the resin including a hydrocarbon traction resin and a tackifier resin, and a cure package including a sulfur-based curing agent, zinc oxide, and a cure accelerator. The rubber composition provides the tire with a good balance of wet, dry, and cold performance characteristics.
A process for producing an ethylene-butadiene copolymer includes copolymerizing butadiene with ethylene in the presence of a catalyst system. The catalyst system includes tris[(trimethylsilyl)methyl]scandium and an aluminum-containing activator.
A process for producing a stable silica/hydrocarbon solution includes ultrasonically mixing silica and a silane in a hydrocarbon solvent. The solution may be dried to obtain a surface-modified silica. The solution may be mixed with a polymer cement to produce silica-rubber (e.g., silica-SSBR) masterbatch products.
A process for producing a stable silica/hydrocarbon solution includes ultrasonically mixing silica and a silane in a hydrocarbon solvent. The solution may be dried to obtain a surface-modified silica. The solution may be mixed with a polymer cement to produce silica-rubber (e.g., silica-SSBR) masterbatch products.
In one aspect, the invention is directed to a tire including an inner surface comprising an elastomer composition and partially enclosing a tire cavity. The tire further comprises a component including an attachment surface comprising a polymer composition, which is attached to a portion of the inner surface via an adhesive, wherein the attachment surface comprises a surface pattern comprising elevations including a height within a range of 20 μm to 1000 μm. In a second aspect, the invention is directed to a method of attaching a component to a portion of an inner surface of a tire. Furthermore, the invention is directed to a sensor container assembly comprising a sensor container and a tire pressure sensor.
A method for producing a masterbatch includes feeding (e.g., continuously feeding) a first composition containing an elastomeric latex (e.g., a natural rubber latex) to a coagulation chamber; and feeding (e.g., continuously feeding) a second composition containing a particulate filler (e.g., carbon black) to the coagulation chamber. The carbon black is fed directly from a sonication chamber to the coagulation chamber and/or a sonication device facilitates ultrasonic mixing within the coagulation chamber. The first composition and the second composition are mixed in the coagulation chamber to form the masterbatch. The second composition may be fed to the coagulation chamber at a pressure of at least about 300 psig and/or a velocity of at least about 100 feet per second. The masterbatch may be dry mixed with an additional elastomer to form an elastomeric composite blend.
A method for producing a masterbatch includes continuously feeding a first composition containing an elastomeric latex to a coagulation chamber; and continuously feeding a second composition containing a particulate filler and a salt to the coagulation chamber. The first composition and the second composition are mixed in the coagulation chamber to form the masterbatch. The salt may be provided so that a salt concentration in the coagulation chamber matches that necessary to bring a magnitude of the zeta potential of the latex to be within a range of 30 to 15 mV, 15 to 1 mV, or 1 to 0 mV. The second composition may be fed to the coagulation chamber at a pressure of at least about 300 psig and/or a velocity of at least about 100 feet per second. The masterbatch may be dry mixed with an additional elastomer to form an elastomeric composite blend.
A racing tire sized for a racing truck includes a tread including first and second layers formed of first and second rubber compositions. The first layer defines a first portion of a road-contacting surface of the tread. The second layer defines a second portion the road-contacting surface of the tread and is only partially covered by the first layer. The first rubber composition includes 70 to 92 phr of a solution-polymerized styrene butadiene rubber and at least one of an isoprene rubber and a polybutadiene rubber, and 50 to 160 phr of silica. The first rubber composition includes a resin at a higher phr than the second rubber composition. The second rubber composition includes 70 to 100 phr of a polyisoprene rubber, 5 to 30 phr of silica, and carbon black. Carbon black is at a higher phr in the second rubber composition than in the first rubber composition.
The invention is directed to a non-pneumatic tire comprising a circumferential tread portion, a circumferential shearband carrying the tread portion, a hub portion, and a supporting structure supporting the shearband on the hub portion. Said shearband and supporting structure are mechanically interlocked with each other and/or the tire comprises a fabric layer extending along a radially inner surface of the shearband and a radially outer surface of the supporting structure. The invention is also directed to a method of making a non-pneumatic tire, comprising the steps of providing a fabric layer having a first surface with a plurality of protrusions, applying a thermoplastic polymer onto the first surface to form a portion of a supporting structure, providing a shearband, and curing the shearband to a second surface of the fabric layer, which is opposite to the first surface.
B60C 7/10 - Non-inflatable or solid tyres characterised by means for increasing resiliency
B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
B32B 38/00 - Ancillary operations in connection with laminating processes
B60C 7/22 - Non-inflatable or solid tyres having inlays other than for increasing resiliency, e.g. for armouring
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
The present invention is directed to a tire comprising a tread, a pair of bead portions, a pair of sidewalls, wherein each of the sidewalls extends from the tread towards a respective bead portion, at least one carcass ply, and one or more belt plies. Moreover, the tire comprises at least one rubber strip having an electrical volume resistivity lower than 108 ohm·cm, extending from a radially inner position of the tread and along one of the sidewalls towards the respective bead portion.
In one aspect, the invention is directed to a tire in which a first sidewall and a first chafer adjacent the first sidewall have an electrical volume resistivity lower than 108 ohm·cm. Moreover, at least one of a second sidewall and a second chafer adjacent the second sidewall has an electrical volume resistivity higher than 109 ohm·cm. In another aspect, each of a first sidewall and a first chafer comprises at least 39 phr of carbon black, and at least one of a second sidewall and a second chafer comprises at most 35 phr of carbon black. In still another aspect, a tire has first and second tread base layers, arranged axially beside each other, wherein the first tread base layer has an electrical volume resistivity lower than 108 ohm·cm, and the second tread base layer has an electrical volume resistivity higher than 109 ohm·cm.
In a first aspect, the invention is directed to a non-pneumatic tire comprising a circumferential tread portion and a supporting structure comprising a circumferential hub portion and a plurality of supporting elements which are arranged radially between the circumferential tread portion and the circumferential hub portion and which extend from the hub portion towards the tread portion to support the tread portion on the hub portion. At least one of the supporting elements comprises i) a first portion comprising a first elastomer composition having a first stiffness, and ii) a second portion, radially adjacent the first portion, comprising a second elastomer composition having a second stiffness which is different from the first stiffness.
A pneumatic tire comprises a tread; a bead region, a sidewall; a bead core; a first apex; an apex-extension; a carcass; a chafer and a second apex. The second apex is positioned between a rim flange protector and the first apex or the extension. The carcass includes a first ply turned-up around the bead core to form a first turnup portion extending along the first apex and the extension and terminating radially inwardly from the radially outward end of the extension. The carcass may include a second ply turned-up, between the bead core and the first ply, around the bead core to form a second turnup portion, the second turnup portion extending along the axially outer side of the first apex. Alternatively, the carcass may include a second ply parting from the first ply at the extension and extending along the extension and the turnup portion of the first ply.
The invention is directed to a non-pneumatic tire comprising a tread band, sidewalls having each a carcass ply, wherein each of the carcass plies extends only on one lateral side of the tire. Radially outer end portions of the carcass plies are attached to the tread band in parallel to the tread band and point essentially in opposite axially outer directions. The invention is also directed to a non-pneumatic tire comprising a tread band and first and second carcass plies, wherein each of these carcass plies is provided on only one lateral side of the tire and has two radially inner bead portions, a radially outer top portion attached to the tread band and two intermediate portions extending transversely to the tread band from the top portion to the respective bead portion. Furthermore, the present invention is directed to tire rim assemblies comprising such tires.
The present invention is directed to a non-pneumatic tire comprising a rubber component, such as a shearband, comprising at least one textile cord, wherein the textile cord comprises yarns, and wherein the majority of the yarns are fused together in the cord. Moreover, the yarns are chosen from one or more of aramid, polyamide, polyester, polyethylene terephthalate, polyethylene naphthalate, glass fiber and carbon fiber yarns.
The present invention relates to pneumatic tires comprising a dual-layer tread made of a first layer comprising a first tread compound having a first tread property and a second layer comprising a second tread compound having a second tread property.
The present invention relates to a tire mold for manufacturing at least one pneumatic tire. The present invention further relates to a method of manufacturing a tire mold. The present invention further relates to a molding kit comprising the tire mold. The present invention further relates to a tire cured in a tire mold.
A tire component formed from a rubber composition comprises a majority weight percent of renewable materials. The rubber composition comprises, based on 100 parts per weight (phr) of elastomer: a blend of at least two rubber elastomers selected from a group consisting of: greater than 50 phr of at least one mass balanced polymer; at least one bio-derived plasticizer; and a bio-derived filler system comprising silica and carbon black. The carbon black filler is at least partially derived from a bio-based feedstock prior to its addition to the rubber composition. The resin and the silica are also derived from renewable materials.
A rubber composition suited to forming a tread for a winter tire includes, expressed as parts by weight per hundred parts of rubber (phr): 100 phr of an elastomer component including a polybutadiene rubber and a styrene butadiene rubber. A filler component includes at least 10 phr aluminum hydroxide, at least 70 phr silica, and 0-20 phr carbon black. The composition further includes an organosilane coupling agent, one or more processing aids, selected from liquid plasticizers, waxes, and resins and a cure package including a sulfur-based curing agent, an activator selected from inorganic activators, organic activators, and combinations, and a cure accelerator.
A rubber composition for an innerliner includes 100 phr of elastomers, including at least 60 phr of a butyl rubber, and 0 to 40 phr of diene-based rubber. The composition further includes 35 to 70 phr of a reinforcing filler and a curing system including zinc oxide and optionally a sulfur-based curing agent.
A tire may include a bead portion, a carcass, an apex, a belt package, and three gum layers. The carcass may be anchored around the bead core of the bead portion and may comprise a carcass plies portion and a turnup portion. The apex may be located between the carcass plies portion and the turnup portion. The belt package may be arranged between the carcass and a tread. The gum layers may include (a) a sidewall gum layer that extends from a first end located at the apex along the carcass plies to a second end; (b) a wraparound gum layer that wraps around an end of a first inner zigzag belt structure of the belt package; and (c) a belt gum layer that extends from a first end located between the belt package and the carcass plies along the carcass plies to a second end.
The present invention is directed to a tread and a tire having a tread, wherein over most of a circumferential length i) a maximum axial width in a top portion of a tread groove is at least 5% smaller than an axial width of the tread groove in its bottom portion, ii) the axial width of the tread groove in the bottom portion is at least 5% smaller than the maximum axial width of the tread groove in a radial intermediate portion of the tread groove, and iii) a maximum axial width of the tread groove in the intermediate portion is within a range of 15% to 50% of the total radial height of the tread groove.
The present invention is directed to a tire comprising a tread and a belt portion located radially below the tread, wherein the belt portion comprises a pair of working belts and a low angle belt. The low angle belt has reinforcement elements having an angle of less than 5° with a circumferential direction of the tire. In a first aspect, the low angle belt comprises a first layer and one or more further layers, wherein the first layer extends over at least 70% of the axial width of the axially largest working belt, and wherein each layer of the one or more further layers extends over at most 50% of the width of the axially largest working belt and is arranged radially below one of the shoulder grooves.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
Disclosed are various approaches to depositing an RFID tag or chip within a rubber substrate. A radio frequency identifier (RFID) chip encapsulated with an adhesive or adhesion promoter is attached to the rubber substrate. Then, a wire antenna is attached to the rubber substrate and inductively coupled to the RFID tag. The wire antenna can be encapsulated with an adhesive or adhesion promoter. The wire antenna can also be arranged longitudinally along the rubber substrate in a plurality of loops with at least one of the plurality of loops placed around the RFID tag.
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Disclosed are various embodiments related to theft event detection and classification of theft of tires and/or wheels on a vehicle, such as a semi-tractor, semi-trailer. A theft event detection and classification system can include at least one computing device including a vehicle computing device comprising an accelerometer. The system can also include tire sensors, corresponding to tires on the vehicle, and in data communication with the vehicle computing device. The system can execute a theft monitoring application to detect vibration signals by the accelerometer and generate an event data record comprising the vibration signal information, tire sensor records comprising retrieved sensor information, and a vehicle environment record. The theft event detection and classification system can execute a theft detection application to analyze the event data record to classify the event and a notification of the possible theft event.
B60R 25/34 - Detection related to theft or to other events relevant to anti-theft systems of conditions of vehicle components, e.g. of windows, door locks or gear selectors
Disclosed are various embodiments for sensing irregular wear of a tire tread. A tire is providing having an innerliner adjacent to a belt package, an undertread adjacent to the belt package opposite the innerliner, and a tread adjacent to the undertread opposite the belt package. The tread includes a plurality of tread elements and a conductive filament disposed laterally within the tread. The conductive filament includes a pair of ends extending radially through the undertread and the belt package to the innerliner and terminates into a corresponding pair of sensor contacts. A sensor adjacent to a radially inward side of the innerliner is also included in the tire, the sensor having a pair of electrical contacts in electrical contact with the sensor contacts.
A tire with printed sensors includes a pair of bead areas, a tread disposed radially outwardly of the bead areas, and a pair of sidewalls, including an inboard sidewall extending from a first bead area to the tread, and an outboard sidewall extending from a second bead area to the tread. A carcass extends toroidally between each of the bead areas radially inwardly of the tread, and an innerliner is formed on an inside surface of the carcass. A plurality of sensors are printed on the innerliner in a sidewall zone of the inboard sidewall or in a sidewall zone of the outboard sidewall, and are configured to measure deformation in the sidewall zone. The plurality of sensors are daisy-chained to provide a single deformation signal that is based on the measured deformations of the plurality of sensors.
The present disclosure relates to programming tire sensors mounted to a tire of a vehicle. An identification tag device (e.g., radio frequency identification (RFID) tag) stores tire information data and/or other data that is unique to a given tire. The identification tag device can be attached to or otherwise contained within a tire-integrated sensor mount configured to support a sensor. The identification tag device transmits tire identification data and/or other data stored by the identification tag device to a sensor when the sensor is attached to or otherwise supported by the tire-integrated sensor mount. The sensor can obtain the tire identification data associated with the tire on which the sensor is mounted, thereby allowing the sensor to associate collected sensor data (e.g., pressure, temperature, etc.) with the tire identification data that is unique to the tire.
B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
A method for forming a composite apex, the method comprising the steps of: forming a coextruded strip of a first compound and a second compound, wherein the second compound is a compound different than the first compound, wherein the apex is formed from winding the coextruded strip while varying the ratio of the first compound to the second compound.
B29D 30/30 - Applying the layersGuiding or stretching the layers during application
B29C 48/49 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
B29D 30/62 - Applying bands of rubber treads, i.e. applying camel backs by extrusion or injection of the tread on carcass
Disclosed are various embodiments for sensing wear of a tire tread. A tire comprises an innerliner, a plurality of belts layered adjacent to the innerliner, a tread adjacent to the plurality of belts opposite the innerliner and a treadwear sensor positioned in the innerliner. The treadwear sensor comprises a base plate on an interior side of the innerliner and a tube extending from the base plate through the innerliner and the plurality of belts to a first wear depth in the tread. When the tread is worn to the first wear depth, an end of the tube is exposed through the tire.
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (Luxembourg)
Inventor
Fehr, Duc Alexandre
Petry, Frank
Nava Velazco, Uriel Rodrigo
Abstract
The invention provides a computer-implemented method and a system for automatically segmenting thermal images of a tire's footprint in order to identify components of the tire's tread pattern. The invention relies on a convolutional neural network model and on digital image pre-filtering. It is capable of accurately segmenting thermal footprint images of tires in either straight rolling or cornering conditions, which allows for the accurate extraction of temperature data for each identified tread pattern component.
A radial tire includes a pair of bead cores, a carcass having one or a plurality of carcass plies extending from one of the bead cores to the other of the bead cores in a toroidal form, a tread portion circumferentially encircling the toroidal form of the carcass, and a belt structure disposed radially between the carcass and the tread portion having a main belt layer, a first, unreinforced rubber layer disposed on a radially outer side of the main belt layer, a second, unreinforced rubber layer disposed within the main belt layer, and a protective belt layer disposed on a radially outer side of the first, unreinforced rubber layer and a radially inner side of the tread portion. A radially outermost layer of the main belt layer has a plurality of reinforcement cords each having a diameter, and the first and second, unreinforced rubber layers have first and second radial thicknesses, respectively, relative to such diameter.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
A tire sidewall rubber composition comprises, based on parts by weight per 100 parts by weight rubber (phr): (A) a blend of polymers comprising at least a polyisoprene and polybutadiene; (B) a reinforcing filler; and (C) a cure package comprising sulfur and at least three accelerators including diphenyl guanidine and tetra benzyl thiuram disulfide and a sulfenamide.
A cobalt-free steel cord-rubber composite article includes, in sequence, a steel cord core, a steel cord coating, and a rubber layer. The steel cord coating contains from about 61 wt % to about 66 wt % copper, from about 3.5 wt % to about 6.5 wt % iron, and a balance of zinc and unavoidable impurities. The rubber layer is formed from a rubber compound including 100 phr of at least one elastomer; sulfur; about 20 phr to about 100 phr of at least one filler; about 2 phr to about 15 phr of zinc oxide; and about 0.5 phr to about 3.0 phr of at least one accelerator, containing no cobalt and no resin.
A tire comprising a tire tread having a tread region comprising a first and second rib, wherein the first and second ribs are separated by a groove; at least one tie-bar element disposed within the groove, and the tie-bar block element having opposed sidewalls separated by a radially extending groove, wherein the radially extending groove tapers from a first width to a second width, wherein the second width is wider than the first width.
A coupling agent, a rubber composition, and a shaped article formed from the rubber composition, such as a pneumatic tire, are described. The coupling agent is represented by Formula I, and is capable of linking a substrate, such as a mineral oxide, carbon black or brass, to an unsaturated elastomer:
A coupling agent, a rubber composition, and a shaped article formed from the rubber composition, such as a pneumatic tire, are described. The coupling agent is represented by Formula I, and is capable of linking a substrate, such as a mineral oxide, carbon black or brass, to an unsaturated elastomer:
FG1-LG1-Sa-LG2-FG2 Formula I
where FG1 and FG2 each represent a functionalized arylene group, which can be the same or different; LG1 and LG2 each represent a linking group, which can be the same or different; and Sa represents a sequence of two or more connected sulfur atoms, where a is a number which is at least 2.
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (Luxembourg)
Inventor
Shaplov, Alexander
Nikishkin, Nicolai
Weydert, Marc
Abstract
The present invention is directed to a diene-norbornene copolymer comprising 1,4 diene repeat units and norbornene repeat units, wherein at least 95% of all 1,4 diene repeat units in the copolymer are cis 1,4 diene repeat units. Moreover, the invention is directed to a method of synthesizing such a copolymer and a rubber composition comprising the copolymer.
C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
A rubber composition is disclosed comprising, based on 100 parts by weight of elastomer (phr): one or more elastomers selected from the group consisting of styrene-butadiene, polybutadiene, natural rubber, polyisoprene, and mixtures thereof; and a silylated material derived from a polyol or a polyol derivative. Also, a tire having a component comprising such a rubber composition is disclosed. Finally, a method of forming a sulfur-curable rubber composition for incorporation in a tire is disclosed, the method comprising: selecting a starting material comprising a polyol or a derivative of a polyol; condensing the starting material with a fatty acid to generate an esterified material; performing a silylation on the esterified material to generate a silylated material; and combining the silylated material with at least one elastomer in a rubber composition, the elastomer being selected from the group consisting of styrene-butadiene, polybutadiene, natural rubber, polyisoprene, and mixtures thereof.
A tire tread is formed from a rubber composition comprising a blend of elastomers comprising predominantly of polybutadiene; from about 100 phr to about 130 phr of silica; and from about 35 phr or more of a plasticizing hydrocarbon resin; wherein the rubber composition is partially or fully devoid of a liquid plasticizer.
A tire includes a pair of sidewalls extending from a respective bead area to a tread. The tread is formed with a plurality of tread elements and a radially outer surface, and a chamber is formed in one of the tread elements. A sensor unit is mounted to the tire and includes a pair of electrical contacts. The polymer plug includes a wire disposed in the chamber. The wire includes proximal ends and a distal end near a radially outer surface of the tread. A liquid polymer is injected into the chamber and cured. An electrical circuit is formed by each proximal end of the wire electrically contacts a respective one of the sensor unit electrical contacts. When the tread element wears down to the distal end of the wire, the wire and the circuit break. A notice is transmitted by the sensor unit when the circuit breaks.
A rubber composition suited for forming a tire tread includes 100 phr of elastomers, at least 30 phr of reinforcing fillers, such as carbon black and silica. The high surface area silica has a CTAB surface area of at least 220 m2/g. A ratio of the carbon black to the high surface area silica is at least 4:1. The composition further includes one or more processing aids and a sulfur-containing cure package.
A puncture resistant pneumatic tire may include a puncture resistant layer and a barrier layer. The puncture resistant layer may have a percent elongation of up to 300% and a tack value with the carcass of about 5 N to about 50 N at normal inflation pressure.
It has been found that a pneumatic tire comprising non-ground contacting tire components each independently formed from a rubber composition comprising greater than 89% sustainable material content can be manufactured. In one scenario the pneumatic tire is comprised of bio-renewable organic materials, wherein the bio-based content of the organic materials is verifiable, and wherein radiocarbon 14C dating according to ASTM method D6866 shows the level of bio-based content of the organic materials to be at least 40%. In a preferred embodiment the tire has an RFID tag affixed to the innerliner of the tire, wherein the RFID tag designates the level of bio-renewable organic materials in the tire.
In accordance with one aspect of the exemplary embodiment, a rubber composition includes at least 20 phr of a composite material, at least 3 phr of a conjugated diene elastomer, a cure activator, and a sulfur-based cure agent. The composite material includes a reinforcing carbon black dispersed in natural rubber. The composite material and conjugated diene elastomer together provide at least 90 phr of vulcanizable elastomers in the rubber composition. The rubber composition may further include a reinforcing filler other than carbon black. The reinforcing filler may include silica. The rubber composition may include at least 5 phr, or at least 8 phr of silica, or up to 30 phr, or up to 18 phr of silica.
A rubber composition suited to forming a tire ply includes 100 phr of elastomer, at least 30 phr of an intermediate carbon black, at least 5 phr silica, such as high surface area silica particles, at least 0.1 phr of a tear strength agent, a sulfur-based curing agent, and an accelerator for the curing agent. The elastomer incudes 60-100 phr of a conjugated diene elastomer. The intermediate carbon black has a statistical thickness surface area (STSA) of from 50 m2/g to 70 m2/g.
The present invention is directed to a tire having a tread, wherein the tread comprises a rubber composition comprising from 80 phr to 100 phr of one or more solution-polymerized styrene butadiene rubbers; from 80 phr to 200 phr of filler comprising at least 40 phr of carbon black; from 10 phr to 100 phr of one or more liquid diene-based polymers; and from 10 phr to 80 phr of a terpene resin.
The present disclosure regards Y-shaped spokes for non-pneumatic tires. Various embodiments described herein include a non-pneumatic tire that comprises a spoke extending along a radial direction between a shear band and a hub. The spoke comprising a first leg and a second leg extending from the shear band to an intersection point. The spoke further comprises a third leg extending from the hub to the intersection point. The first leg and the third leg are oriented along the same direction, which is oriented at an angle to an orientation of the second leg. Further, the first leg, the second leg, and the third leg meet at the intersection point to form a Y-shaped architecture.
The present disclosure is related to a curing ring that can be utilized in a tire mold to cure elastomer bands for NPTs or for tread band assemblies used in tire retreading. In one or more embodiments, the tire mold can comprise a base plate having a plurality of channels oriented along a radial direction. The tire mold can also comprise a plurality of inner segments configured to engage an inner radius of the elastomer band. Each inner segment includes an optional anchor for reception into a respective channel of the plurality of channels. Also, the plurality of inner segments can be configured to translate along the radial direction. Further, the tire mold can comprise a plurality of outer segments configured to engage an outer radius of the elastomer band.
A sealant composition suited to forming a sealant layer in a tire includes 100 phr elastomers, including at least 60 phr of an isobutylene-based elastomer component, and at least 5 phr of a conjugated diene-based elastomer component. The sealant composition further includes at least 5 phr of particulate filler, at least 0.5 phr of an organic peroxide, and optionally a colorant which provides the sealant with a non-black color.
The present invention relates to a pneumatic tire having a tread comprising a tread base layer and a tread cap. The tread cap comprises a first tread cap layer and a second tread cap layer of different polymeric compositions, the tread cap having a central cap zone ZC and two lateral cap zones ZL the lateral cap zones ZL being located axially adjacent to the central cap zone ZC and on axially opposite sides of the central cap zone ZC.
A tire may include: a tread cap; a carcass that comprises a radially outermost ply; a belt structure interposed between the carcass and the tread, the belt structure comprising a radially innermost belt; a pair of sidewall portions, wherein radially outermost portions of each sidewall overlie lateral end portions of the tread cap; a pair of bead regions, wherein the radially innermost belt wraps around the bead regions; a pair wraparound gum layers, wherein each wraparound gum layer wraps around a lateral end portion of the radially innermost belt; and a pair of sidewall gum layers that each extend along an outer surface of the radially outermost ply, wherein a first end of each sidewall gum layer is between the radially outermost ply and the lateral end portion of the radially innermost belt and a second end of each sidewall gum layer is at the bead region.
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B60C 13/00 - Tyre sidewallsProtecting, decorating, marking, or the like, thereof
The invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr): 100 phr of at least one diene-based elastomer; and from 1 to 100 phr of a carbon dioxide-generated carbon reinforcement produce by a method comprising: mixing a first gas stream containing carbon dioxide and a second gas stream containing a gaseous reducing agent to form a reaction gas mixture; supplying the reaction gas mixture to a reaction zone; reacting the carbon dioxide with the gaseous reducing agent in the reaction zone in the presence of an iron-containing catalyst to form water and the solid carbon product; and separating at least a portion of the water formed in the reaction zone from the reaction gas mixture during the reaction of the carbon dioxide with the gaseous reducing agent.
A rubber composition suited for forming a truck tire tread includes 100 phr of elastomers, including a natural rubber and a styrene-butadiene rubber. A ratio by weight of natural rubber to styrene-butadiene rubber is at least 50:50. The composition further includes at least 45 phr of reinforcing fillers, including carbon black and a high surface area silica. The high surface area silica has a CTAB surface area of at least 220 m2/g. A ratio of the carbon black to the high surface area silica is at least 4:1. The composition further includes one or more processing aids and a sulfur-containing cure package.
A method and apparatus for forming an apex or an apex in combination with a bead, the method comprising the steps of: winding a strip of rubber onto a rotatable platen to form an apex, wherein the rotatable platen may further include a radially expandable bead chuck for supporting a bead. The rotatable platen may optionally include a nonstick coating such as titanium nitride and optionally include one or more radially oriented bars. The optional one or more radially oriented bars may be movable into a first position flush with the outer surface of the platen, and movable into a second position that preferably is nonflush and protrudes from the outer surface of the platen. The rotatable platen is further optionally retractable from the bead chuck to facilitate removal of the apex from the apparatus.
In one aspect, the invention is directed to a method of providing an air barrier layer to a tire comprising at least the following steps: providing a tire comprising a tire cavity and an inner surface facing the tire cavity, providing a tubular film with at least one open end, and molding at least a portion of the tubular film to form an air barrier layer adapted to the inner surface of the tire. In another aspect, a cured tire is provided which comprises a tire cavity and an inner surface facing the tire cavity, and a tubular film of molten polymer is extruded. Said film is inserted into the tire cavity of the cured tire and expanded in the tire cavity to form an air barrier layer adapted to an inner surface of the tire.
The invention provides a pneumatic tire having a tire tread with a ground engaging outer surface. The tread further has a first or central tread zone located on the central or crown portion of the tread and formed of a first rubber compound. Additionally, the tread has a second or shoulder tread zone located axially outward of the first or central tread zone on each lateral end of the tread. The second or shoulder tread zone is formed of a second rubber compound. In one example, the first rubber compound has a G′ (at 50% strain) in the range of 1.6 to 1.8 MPa. In another example, the second rubber compound has a G′ (at 100% strain) in the range of 800 to 830 KPa.
A vulcanizable rubber composition comprises an interpenetrating or ionic network (IPN)-promoting resin. The resin comprises side chain functional groups along the resin backbone, which, in the presence of an additive material, form the connections that make up the IPN. In one embodiment, such material is ZnO. A method for forming the rubber composition comprises, in a productive step, mixing the product of the non-productive step, the zinc oxide, and a resin derived from maleic anhydride. The zinc oxide and the resin are simultaneously added to the composition during the productive mixing stage. The rubber composition can be cured and incorporated in a tire component, such as, a tread.
A tire is molded in a mold having elements movable to bring the mold into an open or into a closed position. The mold includes first and second sidewall mold plates and tread mold segments capable of forming a mold cavity. The segments are radially. The process comprises: bringing the mold from an open position into a first intermediate position wherein the segments remain separated radially from the tire by a radial clearance; creating an axial clearance between the tire and the first or second sidewall mold plate so as to bring the mold into a second intermediate position; drawing a vacuum on the mold cavity while the mold is in the second position; bringing the mold from the second position into the first position by axially moving the first or second sidewall mold plate; and moving the segments radially inwardly and bringing the mold into the closed position.
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (Luxembourg)
Inventor
Weydert, Marc
Nikishkin, Nicolai
Shaplov, Alexander
Abstract
The present invention is directed to a synthetic polyisoprene which comprises isoprene repeat units comprising 1,4 isoprene repeat units and 3,4 isoprene repeat units. At least 5% of all isoprene repeat units of the synthetic polyisoprene are 3,4 isoprene repeat units and at least 96% of all 1,4 isoprene repeat units of the synthetic polyisoprene are cis 1,4 isoprene units. Moreover, the invention is directed to a method of synthesizing such a polyisoprene and a rubber composition comprising the synthetic polyisoprene.
C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
C08F 4/60 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides together with refractory metals, iron group metals, platinum group metals, manganese, technetium, rhenium, or compounds thereof
A rubber composition suited for forming a truck tire tread includes 100 phr of elastomers, including 100 phr of elastomers, including at least 50 phr natural rubber, at least 10 phr of butadiene rubber and at least 10 phr styrene-butadiene rubber. The rubber composition further includes at least 45 phr of reinforcing fillers, including carbon black and a high surface area silica. A ratio of the carbon black to the high surface area silica is at least 4:1. The high surface area silica has a CTAB surface area of at least 220 m2/g. The rubber composition further includes one or more processing aids and a sulfur-containing cure package including a vulcanizing agent and an ultra-accelerator.
A pneumatic tire comprising non-ground contacting tire components each independently formed from a rubber composition comprising greater than 89% sustainable material content.
12 - Land, air and water vehicles; parts of land vehicles
35 - Advertising and business services
37 - Construction and mining; installation and repair services
Goods & Services
Vehicles; apparatus for locomotion by land or water; tyres; pneumatic tyres; motorcycle tyres; land vehicle tyres; automobile tyres; truck tyres; farm tyres; inner tubes for tyres; vehicle tracks; treads for tyres; pre-cured treads for tyres; treads for retreading tyres; retreading materials for tyres; rubber tyre repair materials; tyre tube repair materials; wheels; wheel rims; hubs; hub caps; vehicle flaps; tyre and tube repair materials and kits; non skid devices for vehicles; brakes; vehicle hoses; balance weights for vehicle wheels; drive belts for land vehicles; vehicle tyre inflation apparatus; tyre equipment; shock absorbers; parts for vehicles made substantially of rubber; parts and fittings and accessories for all the aforesaid goods. Advertising; business management; business administration; office functions; advertising and promoting tyres, inner tubes for tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and motor vehicle parts and fittings; advertising and promoting tyres, inner tubes for tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and motor vehicle parts and fittings using electronic communications networks, the Internet, extranet, Intranet and LANs; procurement services which assist third parties to obtain tyres, inner tubes for tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and motor vehicle parts and fittings; procurement services provided electronically which assist third parties to obtain tyres, inner tubes for tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and motor vehicle parts and fittings; retailing and wholesaling services relating to tyres, inner tubes for tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and motor vehicle parts and fittings; the bringing together, for the benefit of others, of a variety of goods (excluding the transport thereof), namely inner tubes for tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and/or motor vehicle parts and fittings provided by retail stores, wholesale outlets, through web sites or television shopping programs; business consultancy and advice relating to tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps, tyre and tube repair materials and motor vehicle parts and fittings; retail tyre store services; retail motor vehicles store services; online retail store services featuring motor vehicles tyres; information provided on the Internet relating to the aforesaid; consultation and information relating to the aforesaid services; providing the aforesaid services using the Internet and other electronic communications networks; tyre related business management services, business management, business administration, advertising, office functions, or commercial or industrial management assistance; commercial or industrial management assistance related to tyres, demonstration of goods, sales promotion, procurement services for others related to tyres. Building construction; vehicle maintenance and repair services; tyre repair services; retreading of tyres; fitting of tyres; consultancy, advice and provision of information relating to repair, structure, retreading, composition, maintenance, fitting and installation of tyres, vehicle tracks, treads for vehicles, treads for retreading tyres, wheels, hubs, hub caps; consultancy, advice and provision of information relating to the repair and retreading of tyres and tubes using tyre and tube repair materials; providing the aforesaid services using an interactive database, the Internet and electronic communications networks; consultation, information and advisory services concerning or relating to the aforesaid services; information supplied on the Internet or other electronic communications networks relating to the aforesaid services; tire-related technical retreading services, repair services, installation services, maintenance services, technical assistance; machinery installation, motor vehicle maintenance, motor vehicle repair; vehicle service stations; vulcanization of tyres; tyre-related commercial retreading services.
94.
SYSTEM FOR REAL-TIME DETERMINATION OF CALIBRATION OF AN INERTIAL MEASUREMENT UNIT
A system for real-time determination of calibration of an inertial measurement unit includes an inertial measurement unit and a processor in electronic communication with the inertial measurement unit. A road mapping module receives a vehicle latitude and a vehicle longitude, and determines a virtual heading angle of a vehicle. A virtual acceleration module receives the virtual heading angle of the vehicle, and a measured vehicle speed and heading angle, and estimates a virtual lateral acceleration and a virtual longitudinal acceleration. A correlation module receives the virtual lateral acceleration, the virtual longitudinal acceleration, a calibrated measured lateral acceleration, and a calibrated measured longitudinal acceleration. The correlation module determines a correlation between the virtual lateral acceleration and the calibrated measured lateral acceleration, and between the virtual longitudinal acceleration and the calibrated measured longitudinal acceleration. A notice is generated by the correlation module indicating a result of the correlation.
The invention provides a method and system for automatically detecting a swap of tires on a vehicle using RSSI levels obtained from tires equipped with transmitters. The obtained RSSI level distributions are used to artificially generate a set of training records, allowing for robust training of a machine learning algorithm. The machine learning algorithm is thereby enabled to provide efficient detection of tire swaps, and to generate a corresponding output signal.
A system for estimating the remaining mileage on a tire that supports vehicle includes a processor in electronic communication with an electronic control system of the vehicle. A calibration module determines a wear rate of the tire, and the wear rate of the tire is communicated to the processor. A severity assessment module is in electronic communication with the processor, receives real-time inputs, and generates a real-time driving severity number. A mileage estimation module is in electronic communication with the processor and determines a current wear state of the tire. The mileage estimation module generates an estimate of remaining mileage on the tire from the wear rate of the tire, the real-time driving severity number, and the current wear state of the tire.
Aspects of tire sensor auto-location are described. Timestamped tire acceleration values are received for a set of tire sensor devices. Each tire sensor device provides a tire-specific subset of the timestamped tire acceleration values. Vehicle configuration parameters are identified to define a number of rear axles and a number of tires or wheels on each side of each axle. The vehicle configuration parameters and the timestamped tire acceleration values are processed to identify and assign an axle position and a vehicle side position for each tire sensor device of the set of tire sensor devices.
B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
G07C 5/04 - Registering or indicating driving, working, idle, or waiting time only using counting means or digital clocks
G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
A wheel assembly having a wheel rotation axis; a rim with an outer surface around the wheel rotation axis; wherein the outer surface comprising suction ports; two tires mounted on the outer surface of the rim; a particle collector adapted to trap particles entering said particle collector; a particle suction system with a bladed suction structure configured for generating a suction air flow in the rim upon rotation of said bladed suction structure about the wheel rotation axis; an air passage connecting the suction ports to the bladed suction structure via the particle collector in order to suck particles through the suction ports by means of the suction air flow generated by the bladed suction structure.
Information from sensors on first and second tires positioned adjacent to each other on a dual wheel hub is obtained and stored in a memory. Also, information about the operation of a vehicle is stored in the memory, where the first and second tires are located on the vehicle. A determination is made as to whether a tire radius difference exists between a first radius of the first tire and a second radius of the second tire based on the temperature values and other parameters. An indication is encoded for display that shows that a tire radius mismatch exists between the first and second tires.
G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
100.
NON-DESTRUCTIVE INSPECTION OF TIRES USING RADAR TOMOGRAPHY
Disclosed are examples related to non-destructive examination of tires using radar tomography. A radar signal can be used to illuminate a portion of a tire. Reflected radar signals can be received and used to generate a 3D image of at least the portion of the tire. The radar signals can illuminate a tread of the tire, an innerliner of the tire, and/or one or both sidewalls of the tire. The 3D image can include structural information of the tire that can be used to identify defects or damage in the tire. The examination can be conducted on new tires during fabrication, on existing tires during operation, and/or on used tires during refurbishment.
G01S 13/89 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
G01S 13/931 - Radar or analogous systems, specially adapted for specific applications for anti-collision purposes of land vehicles
