A tire repairing method is to repair a damage portion (40) that is formed in a rubber layer (33) positioned between a carcass ply (20) and a tire surface (31) in a tire side part (30) and terminated inside the rubber layer (33). The tire repairing method comprises: a step (S10) of opening a damage portion (40) in a state where a tire (10) is retained; a step (S20) of injecting or applying an adhesive (60) into the damage portion (40); and a step (S30) of cancelling an opened state of the damage portion (40) and bonding opposed wall surfaces to each other in the damage portion (40).
B29C 73/02 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using liquid or paste-like material
An object of an aspect of the present invention is to provide a tire having a structure in which static electricity from a vehicle is easily released to a ground regardless of conductivity of a carcass ply. A tire is provided with a tread portion (11), and a bead portion (13), the tire includes a bead core (60) which is provided in the bead portion (13), a carcass ply (51) which covers at least a part around a core axis of the bead core (60), and a conductive rubber portion (80) which includes an embedded portion embedded in the carcass ply (51), and at least a part of the embedded portion is located on an outside in a tire radial direction in relation to the bead core (60).
One aspect of a tire (10) according to the present invention is provided with a tread portion (11), a side wall portion (12), and a bead portion (13), wherein the tire is provided with a bead core (60) provided in the bead portion (13), at least one carcass ply (51) provided around at least a portion of a core axis of the bead core (60), and an electrically conductive rubber portion (80) provided between the carcass ply (51) and the bead core (60), and wherein the electrically conductive rubber portion (80) transmits electricity between a surface on one side of the at least one carcass ply (51) and a surface on the other side thereof.
Provided is a rubber composition which has a high vulcanization rate and excellent storage stability. This rubber composition contains: a rubber component including at least one type of a diene rubber; a filler; a vulcanizing agent; a compound represented by formula (1); a compound represented by formula (2); and a vulcanization accelerator other than the compound represented by formula (1), wherein the total amount of the vulcanization accelerator and the compound represented by formula (1) is 1.3-2.0 parts by mass with respect to 100 parts by mass of the rubber component.
Provided are an elastic crawler and an elastic crawler device which allow low-fuel consumption as well as excellent ride quality. This elastic crawler (1) is equipped with: a body (2); a plurality of core metals (3) which each have a pair of wings (3a), and are embedded in the circumferential direction; rolling surfaces (2a1) which are formed on the inner peripheral surface of the body (2); recesses (2b) which are formed in the inner peripheral surface of the body (2), the recesses (2b) extending outwardly in the width direction from the rolling surfaces (2a1); and a plurality of lugs (4a) which are formed on the outer peripheral surface of the body (2), each of the lugs (4a) extending in the width direction (W) from one end (4a1) to the other end. The end (4a1) is located between the core metals (3), and overlaps the rolling surfaces (2a1) in the thickness direction. The other end overlaps, in the thickness direction, the portions where the wings (3a) of the core metals (3) are embedded. An elastic crawler device comprises the elastic crawler (1), a sprocket (20), and a track roller (30).
Provided is an elastic crawler with improved transmission of the driving force to snow, soft ground, etc. by improving the packing performance during running of the elastic crawler. The elastic crawler I comprises: a crawler main body 2 formed into an endless shape with an elastic body; a plurality of cores 3 being embedded in the crawler main body 2 in a manner spaced from each other in the crawler circumferential direction and extending in a crawler width direction; and a plurality of lugs 4, 5 raised from an outer circumferential surface of the crawler main body 2 and respectively surrounding predetermined regions R overlapping the cores 3 in a crawler thicknesswise view.
A crawler includes crawler body formed by an elastic body shaped into an endless loop, a tensile body embedded in the crawler body and wound around a circumferential direction of the crawler body, guide projections formed at an inner circumferential surface of a width direction central portion of the crawler body and spaced apart in the circumferential direction of the crawler body, a flat face, upon which a rotating wheel provided at a vehicle rolls, forming an inner circumferential surface further toward a width direction outer side of the crawler body than the guide projections and an inclined face, upon which the rotating wheel rolls, inclined from an outer side end portion of the flat face in a crawler body width direction such that a thickness of the crawler body gradually increases toward the width direction outer side and circumferential inner side of the crawler body.
An elastic crawler includes an elastic crawler body and plural cord layers. The elastic crawler body is formed by an elastic body shaped into an endless loop. The plural cord layers are formed by plural cords arrayed spaced apart and covered by the elastic body, and the plural cord layers are embedded in the elastic crawler body. Respective cords included in mutually adjacent cord layers are disposed so as to intersect each other when viewed along a thickness direction of the elastic crawler body, and in at least one pair of adjacent cord layers inside at least a partial region of the elastic crawler body, a total area of portions where the respective cords included in each layer of the adjacent cord layers overlap with each other, when viewed along the thickness direction, is smaller than a total area of portions where respective regions of each layer of the adjacent cord layers in which none of the cords are disposed overlap with each other when viewed along the thickness direction.
A crawler includes a crawler main body (a rubber crawler main body (12)), a tensile body (70), guide protrusions (16), and flat surfaces (40). The tensile body (70) is provided with a flat portion (72) that is arranged along a width direction of the crawler main body and a slanting portion (74) that is slanted and arranged at a width direction outer side of the crawler main body relative to the flat portion (72). The guide protrusions (16) are formed at an inner peripheral face of the crawler main body at a width direction middle portion of the crawler main body. The flat surfaces (40) are formed at the width direction outer sides of the crawler main body relative to the guide protrusions (16). Turning wheels (a driving wheel (100), an idling wheel (102) and rolling wheels (104)) provided at a vehicle roll on the flat surfaces (40). In a linear region of the crawler main body as seen in a side view of the crawler main body, if a thickness from an imaginary plane projected from the flat portion (72) in the width direction of the crawler main body to an end edge at a crawler main body width direction outer side of the slanting portion (74) is represented by L, then a result of subtracting a turning direction length of the crawler main body at the flat portion (72) from a turning direction length of the crawler main body at the slanting portion (74) is less than 27th.
A main cord layer (20) is embedded in a crawler main body (12), and a first bias cord layer (22), a second bias cord layer (24), a third bias cord layer (26) and a fourth bias cord layer (28) are embedded at an outer peripheral side of the main cord layer (20). Bias cords (25A) of the second bias cord layer (24) and bias cords (27A) of the third bias cord layer (26) are inclined in a direction that is opposite, with respect to a crawler circumferential direction, bias cords (29A) of the fourth bias cord layer (28) that are inclined with respect to the crawler circumferential direction.
This disclosure aims to provide an elastic crawler and an elastic crawler drive mechanism which suppress the interference between the pin members and the engaging portions, and simultaneously improve the durability of the engaging portions. The elastic crawler according to this disclosure is an elastic crawler comprising on an inner circumferential side a plurality of engaging portions (14) respectively engageable with a plurality of pin members (22) arranged at a spacing in a circumferential direction of a sprocket, wherein: the engaging portions (14) have a pressure receiving surface (14a) which receives the pin members (22), an outline shape in side view of the pressure receiving surface (14a) being formed by an envelope L1 drawn by an outer end of the pin members (22) when the sprocket rolls coaxially with a central axis of a virtual rotor with a rolling diameter D1 as defined in D1 =(pitch of the engaging portions)×(number of pin members)/(.pi.)×a, and 0.9×a<1, together with the virtual rotor on a plane.
In an elastic crawler (10) and an elastic crawler drive mechanism (100), at least a portion of the outer edge of an engaging portion (12) has a cross-sectional arc shape such that both the trajectory drawn by the outer edge of the engaging portion (12) from when the engaging portion (12) starts to enter a tooth groove of a sprocket (20) until engagement between the engaging portion (12) and teeth (22) is complete and the trajectory drawn by the outer edge of the engaging portion (12) from when the engaging portion (12) starts to disengage from the teeth (22) until disengagement is complete do not project further outward than the outer edge of the engaging portion (12) when the engagement is complete.
This disclosure is to provide a rubber crawler excellent in durability. in which projections are adhered to a crawler main body separately. The rubber crawler (10) according to this disclosure has a crawler main body (1) formed of vulcanized rubber and projections (3) formed of vulcanized rubber, the crawler main body (1) having a ridge (1c) on an inner circumferential surface (1b), the projections (3) being attached via an adhesion means (M3) to the ridge (1c) of the crawler main body (1).
This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving the initial adhesiveness, heat-resistant adhesiveness and initial adhesion rate. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with XPS (X-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.8 atom% or less, phosphorus at an amount of 0.5 atom% or more, and oxygen at an amount of 50 atom% or less; and in the outermost surface, an atomic ratio of copper to zinc is 1 to 6.
This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving overvulcanization adhesiveness. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with XPS (X-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.93 to 14 atom%, and contains oxygen at an amount of 50 atom% or less; and in the outermost surface, an atomic ratio of copper to zinc is more than 2.33 and 6 or less.
A rubber crawler having a specified rotation direction includes a crawler body that is formed in an endless shape and includes plural lugs. "Me plural lugs are provided at the crawler body, project out from an outer peripheral face, as viewed from a crawler outer peripheral side, are allocated to one side and another side in a crawler width direction so as to be alternately disposed on progression along the crawler peripheral direction on each side of a central line passing through a crawler width direction center, and extend at an angle to the crawler peripheral direction from an end portion on the central line side toward a crawler width direction outer side and toward an opposite side to a crawler rotation direction. In a cross-section of the lugs taken along the crawler peripheral direction, an angle formed between each apex side portion of tread- in-side wall faces on the crawler rotation direction side and the outer peripheral face is 90 degrees or greater, and is smaller than an angle 02 formed between each apex side portion of a kick-out-side wall faces on the opposite side to the crawler rotation direction and the outer peripheral face.
A pneumatic tire has the following structure. Narrow grooves are arranged in a tread surface at intervals in a tire circumferential direction, each of the narrow grooves extending at an angle with the tire circumferential direction and having a groove width smaller than a groove depth. In one end portion of the narrow groove, an inflow part extending in the tire circumferential direction, communicating with the narrow groove at one end, and terminating at the other end is provided in a groove wall surface that is on an end point side of a tire circumferential component of a first vector from among groove wall surfaces of the narrow groove that face each other in the tire circumferential direction, the first vector being from one end of the narrow groove to the other end of the narrow groove.
This pneumatic tire (1) has: a tread section; tire side sections; and a carcass section that extends over the tread section, the tire side sections, and bead sections. The carcass section has a body section and folded sections each folded around a bead core. A circumferential recessed section, which extends in the tire circumferential direction, is formed on the outer surface of the tire side section. In a cross-section of the tire, a rim-side outer surface, which is to be formed in a region extending from a rim-separation point to the inner edge of the circumferential recessed section in the tire radial direction, is formed along a predetermined circular curve. When a virtual circular curve as an extension of the predetermined circular curve is defined, the depth of the circumferential recessed section with reference to the virtual circular curve is between 5mm and 35mm in the 22%-28% range of the tire height from a bead end part.
A rubber track (10) has: a rubber belt (12) as an example of an endless rubber body which is passed over wheels; rubber protrusions (14) which are formed on the rubber belt (12) at intervals in the circumferential direction of the track, protrude to the inner peripheral side of the rubber belt (12), and limit the movement of the wheels in the widthwise direction of the track by being in contact with the wheels; and metallic members (32) which are embedded in the rubber protrusions (14) to increase the rigidity of the rubber protrusions (14) in the widthwise direction of the track and which each have a portion exposed from the rubber protrusion (14).
B62D 55/253 - Tracks of continuously-flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
B29C 33/12 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
B29C 43/18 - Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
In a cross section of this tire (1) orthogonal to the tire circumferential direction and running along the tread width direction, an end (7b) that is outside in the tire diameter direction of an electronic device (7) is located farther inward in the tire diameter direction than a reference position that is located outward in the tire diameter direction away from an outer rim end portion (2b), the outer rim end portion being located on the outside in the tire diameter direction of a rim contact surface, and the distance between the outer rim end portion and the reference position being equal to the thickness (T1) of a bead portion in the outer rim end portion.
Methods for increasing the extractable rubber content of non-Hevea plant matter that entail the use of particular forms of hammer milling and/or roller milling in an increase in the amount of rubber that can be extracted from the resulting plant matter such as by organic solvent extraction or aqueous extraction are provided. In certain embodiments, the methods are for increasing the extractable rubber content of guayule plant matter, and entail the use of particular forms of hammer milling in combination with roller milling and flaking to increase the amount of rubber that can be extracted from the guayule plant matter such as by organic solvent extraction or aqueous extraction.
A method for the removal of organic solvents from the wet bagasse having up to 45 weight % combined organic solvents and water includes heating the wet bagasse to a temperature of at least 100 C to evaporate the organic solvents and produce dried bagasse that contains no more than 1 weight percent organic solvents. Exemplary heating methods include the use of a dryer with multiple layers, the use of a dryer with multiple paddles or a desolventization screw extruder. The methods are particularly useful with wet bagasse from guayule shrubs. Removal of the organic solvents from the wet bagasse may allow for re-use of the organic solvents (e.g., if they are condensed and collected separately from the dried bagasse) and/or for use of the dried bagasse in further products (e.g., briquettes or pellets).
Provided is a pneumatic tire with which thermal radiation in a tread part is promoted, and the temperature of the tread part is lowered. In a tread track, at least one circumference direction groove which extends along a tire circumference direction, and a plurality of width direction grooves which open in the circumference direction groove and have wider groove widths than the circumference direction groove, are formed upon a pneumatic tire. Concave parts are formed in the groove walls of the circumference direction groove facing the width direction grooves. At least one protrusion part is formed in the bottom of the circumference direction groove between adjacent concave parts in the tire circumference direction.
Provided herein are organic solvent-based processes for the isolation of purified natural rubber from non-Hevea plants. The processes are particularly useful with plant matter that comprises at least 90% by weight roots sourced from Taraxacum kok-saghyz (Russian dandelion), Scorzonera tau-saghyz (Tau-Saghyz), Scorzonera uzbekistanica, and combinations thereof. Also provided herein is a purified non-Hevea rubber product containing 100 phr of rubber sourced from Taraxacum kok-saghyz, Scorzonera tau-saghyz, Scorzonera uzbekistanica, and combinations thereof, having a specified purity level. Additionally provided are sulfur-vulcanizable rubber compounds and sulfur-vulcanized rubber compounds that incorporate 10-100 phr of purified non-Hevea rubber product sourced from Taraxacum kok-saghyz, Scorzonera tau-saghyz, Scorzonera uzbekistanica, and combinations thereof, having a specified purity level.
A tire 1 includes plural land portions 40 formed on a tread portion 10. The plural land portions 40 are segmented by a circumferential direction groove 30 extending in a tire circumferential direction L and a width direction groove 20, or segmented by an end portion 10E of the tread portion 10 in the tire width direction W and the width direction groove 20. A length of the width direction groove 20 in the tire width direction W is not less than 30% of a length of the tread portion in the tire width direction W. The width direction groove has at least one angled portion 50A/50B configured to be bent toward an opposite direction to a tire rotational direction R on at least one side of a tire equator line CL.
Provided herein are organic solvent-based processes for the removal of rubber from non-Hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).
Provided herein are organic solvent-based processes for the removal of rubber from aged briquettes made from compressed plant matter (briquettes) of non-Hevea plants. Also provided are aged briquettes made from the compressed plant matter of non-Hevea plants where the briquettes have been aged for either various time period after formation and the rubber within the briquette has retained its a molecular weight to within a specified range.
A circumferential recess is formed on the outer surface of a tire side section, the circumferential recess being recessed inward in a tread width direction and extending in a tire circumferential direction. A block protruding outward in the tread width direction is formed on the inside of the circumferential recess . In a cross section along the tread width direction of the tire and the tire radial direction, a rim outer surface is formed in an area from a rim separation point, which is the outermost point in the tire radial direction that is in contact with a rim flange, to an inner end of the circumferential recess in the tire radial direction. At least a part of the block protrudes further to the outside in the tread width direction than a virtual line along which the rim outer surface extends.
The tire includes a tread portion to come into contact with a road surface. A lateral groove portion extending in a direction intersecting with a tire circumferential direction, and a land portion partitioned by the lateral groove portion are formed in the tread portion. The land portion includes: a ground-contact face to come into contact with the road surface; a side face formed on an outer side in a tread width direction of the land portion; a lateral groove face constituting a groove wall of the lateral groove portion formed on one end in the tire circumferential direction of the land portion; and a tapered face which meets the ground-contact face, the side face, and the lateral groove face in a corner portion formed by the ground-contact face, the side face, and the lateral groove face.
Provided is a method for repairing a radial tire, wherein the durability of a patch rubber that is bonded to the damaged portion of a carcass ply from the inner surface side of a tire is enhanced, the service life of the repaired tire is extended, and the time required for repairing is shortened. This method for repairing a radial tire (1) involves a step for bonding a patch rubber (10), in which a plurality of reinforcing elements (11) arranged in parallel is covered with a rubber, to the damaged portion (7) of a carcass ply (5a) from the inner surface side of the tire when at least one ply cord (6a) becomes damaged along with the ply rubber on the carcass ply in a side wall section (3). The method is characterized in that the patch rubber is bonded in a manner such that the reinforcing elements (11) are parallel to one of the tire diameter directions, and in a manner such that at least a portion of each of the plurality of reinforcing elements (11) on the inner side edge (11a, 11b, 11c) of the tire diameter direction is positioned to have a different distance in the perpendicular direction in relation to one of the tire perimeter lines.
B29C 73/04 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using preformed elements
B60C 5/00 - Inflatable pneumatic tyres or inner tubes
A tire status detection device (100) is provided with electronic components (200) including a sensor (210) for detecting the pressure within the tire, and also with a case (300) for containing the electronic components (200). The case (300) is provided with a case body (310) for containing the electronic components (200) and having an opening surface (310A), and also with a lid body (320) for covering the opening surface (310A). The inside of the case body (310), the opening surface (310A) of which is covered with the lid body (320), is filled with a sealing material (370). Even under the environment in which water such as coolant water is poured into the tire, failures of the electronic components are prevented from occurring and tire statuses, such as the inner pressure and temperature of the tire, can be reliably detected.
A device (100) for acquiring information regarding the inside of a tire comprises a compartment unit (10), which houses at least a reception antenna for receiving radio signals that is disposed on the inside of a tire-wheel assembly and an electronic circuit part that is connected to the reception antenna and makes up part of the device (100) for acquiring information regarding the inside of a tire; and a base plate (40) on which are disposed the compartment unit (10) and the structural components that form the device (100) for acquiring information regarding the inside of a tire. The compartment unit (10) is formed from a non-metal inorganic material, and the structural components are formed only from water-resistant components.
A thin groove 4 that continuously extends in the tread circumferential direction is provided in a shoulder rib 3. An annular groove 8 continuous in the circumferential direction is provided in a groove wall 4a on the tread equatorial surface side of the thin groove 4 to be contiguous to the groove bottom, in a cross section taken in the width direction of the tread. The shape of the annular groove in a cross section taken in the width direction of the tread is formed such that a corner portion contiguous to the groove wall on the tread equatorial surface side is rounded to a curvature radius R1, a corner portion of the innermost portion of the annular groove that is in the outer side portion in the tire radial direction is rounded to a curvature radius R2, a corner portion of the innermost portion of the annular groove that is in the inner side portion in the tire radial direction is rounded to a curvature radius R3, and a corner portion contiguous to a groove wall 4b on the tread end side is rounded to a curvature radius R4. According to the present invention, it is possible to improve the stone trapping resistance, tear resistance of defense grooves, and groove bottom crack resistance.
B60C 11/01 - Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
B60C 11/04 - Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
34.
PROCESS FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER, MODIFIED CONJUGATED DIENE POLYMER OBTAINED BY THE PROCESS, AND RUBBER COMPOSITION CONTAINING THE SAME
A process for producing a modified conjugated diene polymer includes subjecting an active terminal of a conjugated diene polymer having a vinyl content of less than 10% and a cis-1,4 bond content of 75% or more to a modification reaction with an alkoxysilane compound, and subjecting the alkoxysilane compound (residue) to a condensation reaction in an aqueous solution at a pH of 9 to 14 and a temperature of 85 to 180°C in the presence of a condensation accelerator including a compound containing titanium. The modified conjugated diene polymer exhibits low heat build-up and increased reinforcing properties when used for a rubber composition, and exhibits excellent wear resistance, mechanical characteristics, and processability.
C08F 8/42 - Introducing metal atoms or metal-containing groups
C08C 19/25 - Incorporating silicon atoms into the molecule
C08F 4/44 - Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
C08F 36/04 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
C08L 47/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds; Compositions of derivatives of such polymers
A tire information management system used for a mining site including a sensor configured to measure the condition of a tire attached to each of a plurality of vehicles for transporting mineral resources. A tire information management apparatus is configured to receive, by radio, a measurement transmitted by the sensor, and to transmit, to one of the vehicles that the measurement comes from, deterioration restrains information for restraining progress of deterioration of the tire, in a case where the received measurement is not within an allowable range.
B60C 23/00 - Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
36.
SYSTEM AND METHOD FOR QUANTITATIVE ANALYSIS OF CAUSE OF TIRE TROUBLE
There is provided a system and method for quantitative analysis of a cause of tire trouble capable of quantitatively analyzing whether the tire trouble is caused by the tire itself or in a matter of harshness of a tire using condition in light of not only a force acting on a tire mounted on a running vehicle but also harshness of a tire using condition such as a traveling speed of the vehicle, level difference of a road surface, a curve and gradient information. The method for quantitative analysis of a cause of tire trouble according to the present invention is characterized by comprising the steps of receiving positional data of a running vehicle from the GPS, simultaneously measuring triaxial accelerations which are accelerations acting on the running vehicle in back-and-forward, right-and- left and up-and-down directions while time synchronizing with the received data, quantitatively analyzing harshness of a tire using condition from the received positional data and the triaxial acceleration data, and displaying an analysis result.
patents
