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JP03239602 |
PURPOSE: To secure envelope performance and to reduce an aspect ratio by specifying the aspect ratio, forming a belt by spirally winding organic fiber cord having given modulus of elasticity within given width, and respectively specifyin...
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JP03231002 |
PURPOSE: To provide a tire which provides excellent envelope performance and has excellent drivability and stability by arranging the upper end of the winding-up part of a carcass ply at height lower than 60% of the height of a side wall...
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JP03231001 |
PURPOSE: To improve brake performance and traction performance by specifying a ratio between the length of a peripheral direction and the length in the direction of width of an earthing print and a relative relation between the length co...
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JP03228903 |
PURPOSE: To prevent breakage of a tube or the like by providing continuous ring-shaped projections having a specific height or more in the circumferential direction on the outside surfaces of a tire between the position apart by a half o...
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JP03224803 |
PURPOSE: To improve antifrictional characteristic by manipulating the shape or the rigidity of a crown part so that the ground shape of the crown part may take a preset form during the load loaded to a tire reaches a preset ratio of the ...
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JP03213404 |
PURPOSE: To lighten a spare tire and improve the durability thereof by forming a belt layer of belt cords consisting of aromatic polyamide fibers to define a distance between the belt cords, while binding the outer surface by the belt la...
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JP03213403 |
PURPOSE: To improve durability and floating effect in low internal pressure travelling, by forming a belt cord out of organic fibers similar to those of a carcass cord while specifying the radius of curvature of surface in a tread sectio...
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JP03204313 |
PURPOSE: To prevent cord loosening at the folding end, in a tire having a specific aspect ratio, by making the height at the folding end of a carcass higher than that of a bead apex and also setting it to prescribed times the height of t...
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JP03204307 |
PURPOSE: To achieve low specific fuel consumption, and also to improve riding comfort in a radial tire for an automobile having a steel belt, by specifying tangent loss of a cap rubber and a base rubber, the number of steel cords in a be...
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JP03204304 |
PURPOSE: To prevent the damage in beads, in a high-speed heavy-load tire for an aircraft, by specifying the ratio of the radius of curvature of the circle passing through the maximum width point of the tire, the point of a prescribed tim...
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JP03204309 |
PURPOSE: To improve cornering characteristic by forming a tread part with two circular arcs of different radii of curvature so as to intersect at a point apart from the equator plane by the distance of a prescribed times the tire width, ...
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JP03204305 |
PURPOSE: To improve performance both in straight traveling and in turning traveling by forming the block pattern forming a tread surface in such a way that the block groups formed along the outer circumferential surface consisting of two...
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JP03200405 |
PURPOSE: To improve wandering performance while shoulder drop abrasion is suppressed by forming shapes of both shoulders in an asymmetric tread in a round shape outside a vehicle and in a square shape inside the vehicle respectively. CON...
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JP03200404 |
PURPOSE: To improve grounding characteristics and movement characteristics by forming a belt layer of main and auxiliary belt layers as well as by sequentially increasing the number of cords per unit width in the auxiliary belt layer in ...
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JP03200402 |
PURPOSE: To reduce full thickness and bending rigidity of a shoulder part to suppress bending deformation and heat generation of a bead part by setting a ratio of full thickness of a point in 90% contact with the ground on a tread part t...
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JP03197210 |
PURPOSE: To improve steering stability and riding comfort by specifying the extended height of a bead filler rubber laid on a pair of bead cores, and the height of a side reinforcement layer laid between the bead filler rubber and the be...
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JP03189206 |
PURPOSE: To enhance the characteristics of a tire at low costs by constructing a carcass so as to have a radially cut profile meeting specific conditions while taking the no-load self-standing attitude, in which the tire is mounted on a ...
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JP03189214 |
PURPOSE: To suppress ply cord fatigue and improve comfort of sitting in a car cabin by securing the small wall thickness range at each side part over a wide extent as 50% of the internal surface max. height of the tire, and thereby enlar...
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JP03189205 |
PURPOSE: To enhance the drying performance, wear resistance, and wettability by putting the carcass line from the max. width position of a tire to a radial direction outside part in coincidence with a specific equilibrium carcass line, a...
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JP03189204 |
PURPOSE: To enhance the drying performance, wear resistance, and wettability by putting the carcass line from the max. width position of a tire to the radial direction outside part in coincidence with a specific equilibrium carcass line,...
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JP03182812 |
PURPOSE: To achieve positive understanding of a ground contact condition and increase in a ground contact area and so fourth at the time of cornering by forming a protruding part which protrudes in a particular height and extends in a pa...
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JP03176213 |
PURPOSE: To improve the durability of a run flat, in a tire of prescribed flatness ratio, by specifying the rubber performance and arrangement of a crescent- shaped reinforcing liner and a bead filler to form a carcass in two layers, and...
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JP03169708 |
PURPOSE: To simply and reliably prevent collapse of the side wall of a filed ridge by means of a tire by setting the tread width of a tread so that an angle of a tangential line for interconnecting a tread part and a tire side part with ...
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JP03169707 |
PURPOSE: To improve dry performance and wear resistance by specifying the carcass line of the part, located radially outwardly of at least a maximum width position, of a tire and the ratio of the groove area to an earthing width of a tre...
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JP03169709 |
PURPOSE: To improve riding sensation without deteriorating high speed stability and drive stability by setting a ratio between the height at the maximum width of a carcass and the height of a section and a ratio between the curvature of ...
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JP03167007 |
PURPOSE: To enhance the grip performance of the tread by obtaining an action that envelops sand and snow with the recessed part of a tread at the time of travelling by molding the tread in the shape wherein the shoulder part is recessed ...
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JP03167004 |
PURPOSE: To reduce the abrasion of both sides of a tire and improve high speed durability by forming each profile of the crown section and shoulder section of a tread of circular arcs having specified radius of curvatures respectively an...
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JP03164304 |
PURPOSE: To shorten the cord winding work time and improve in-plane rigidity by winding multiple cords with the preset elastic modulus adjacently to each other in the peripheral direction to form a belt in a tire with the belt spirally w...
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JP03148305 |
PURPOSE: To maintain proper strength and stiffness and to improve general performance by forming a carcass with a pair of carcass pieces the respective end portions are opposed to each other with a prescribed space and connecting the res...
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JP03148311 |
PURPOSE: To improve the quality of travel without damaging anti-wearability, by specifying an angle which is formed by a connection that joins the center of a crown and the tire width direction outer side end portion of plural row blocks...
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JP03139402 |
PURPOSE: To improve off-road performance of a pneumatic tire by forming a central groove in the peripheral direction in the center of a tread part and ground contact parts on both sides of the tread part, so as to specify the width of th...
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JP03132402 |
PURPOSE: To improve driving stability particularly at high speed traveling by forming a tread surface of a flat tire along a reference curved surface having an inner circular arc, an intermediate circular arc and an outer circular arc wh...
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JP03121905 |
PURPOSE: To improve the gripping force at the time of a high speed turning and prevent partial wear at a tire of a specific aspect ratio, by forming an outer surface shape on a tread portion cross section within a vulcanization mold with...
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JP03121904 |
PURPOSE: To improve an ice and snow covered road performance without damaging a paved road by setting the ratio of a tire axle direction width to a tire tread width within a specific range. CONSTITUTION: Where a tire axle direction maxim...
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JP03099903 |
PURPOSE: To equalize the growth of an external form of a tread without damag ing its durability in a flat tire for a heavy load by specifying a width ratios of a carcass to a rim, of the tread to the rim and of a belt to the tread or the...
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JP03090406 |
PURPOSE: To improve bending ability by a method wherein a cable form rigid substance of which a bead core, embedded in the bead of a tire, consists is provided with a surface to block adhesion to vulcanized rubber and rigid substances of...
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JP03082606 |
PURPOSE: To increase the critical speed of a standing wave and improve high- speed durability by setting the raw belt inner diameter difference of belt layers to a specific value, and setting the ratio between the belt inner diameter dif...
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JP03079404 |
PURPOSE: To suppress deformation and heating of external profile of the outer surface of a tire between a ground end point and a side wall point under a condition of standard internal pressure by forming the curving profile out of a sing...
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JP03074209 |
PURPOSE: To improve the durability of a bead portion by providing a plurality of turning points between a particular point relative to a rim and the maximum width position, and specifying the position of a turn-up end, in a carcass line ...
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JP03070602 |
PURPOSE: To eliminate the generation of a joint portion in which a cord is discontinuous in the form of a step and to improve the uniformity of a slick tire by forming a band layer disposed in the outside of a belt layer of band cords sp...
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JP03067701 |
PURPOSE: To increase the cornering power of a pneumatic radial tire and to improve its stability in operation by specifying the relation of radii of curvature of the ground center of a tread part of a tire, a shoulder side end of an oute...
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JP03065404 |
PURPOSE: To improve durability and biased-abrasion resistance of a belt of a heavy load radial tire for a bus and the like, whose aspect ratio is specified, by specifying distances from the equatorial plane to carcass maximum width posit...
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JP03054002 |
PURPOSE: To improve the rigidity and make the resuming ability faster so as to secure the running stability by setting the ratio between the inter-bead length and the maximum tire width in a specified range larger than conventional one, ...
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JP03050001 |
PURPOSE: To strengthen tread and bead portions of the subject tire for a passenger car mentioned by forming plural infection points among the widest position of the tire, the positions corresponding to a maximum belt width of a carcass a...
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JP03038417 |
PURPOSE: To prevent a rim slip and improve the anti-fatigue quality of a carcass near a bead portion, by forming the up carcass into a linear shape along a radial direction from a head core winding around position, and also, specifying a...
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JP03031008 |
PURPOSE: To get a multi-purpose tire having wide availability for various roads such as a snowy road, a marsh, etc., by arranging lugs on a tread portion of a tire body, in addition, by arranging blocks in the range from a shoulder porti...
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JP03025003 |
PURPOSE: To improve both of grip performance and response characteristics of a radial tire for a high speed car during cornering by setting hardness of tread rubber so as to be higher in the middle portion of the tread than in its side p...
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JP03016803 |
PURPOSE: To improve the lateral rigidity of a tire provided with a belt consisting of spirally wound width-directional cords by specifying the aspect ratio, and by forming bead-rings in such a way that single strands are spirally wound a...
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JP03010903 |
PURPOSE: To suppress change in a carcass profile following its running by dividing the carcass profile into respective upper and lower spheres while respectively specifying such as ratio in respective radii of curvature in the respective...
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JP03010904 |
PURPOSE: To suppress change in a carcass profile following its running by dividing the carcass profile into respective upper and lower respective spheres while respectively specifying such as ratio of a radius of curvature in the upper s...
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