B60C2009/2087

Pneumatic tire
11230144 · 2022-01-25 · ·

A pneumatic tire comprises a belt layer disposed in the tread portion. The average cord angle θn and average cord count Nn of the belt layer are constant or gradually increases or decreases from a center position to shoulder positions. The ratio θns/θnc of the average cord angle θns at the shoulder positions to the average cord angle θnc at the center position is 1.30 or less. The ratio Nns/Nnc of the average cord count Nns at the shoulder positions to the average cord count Nnc in the center position is 0.77 or more.

Tire for two-wheeled automotive vehicle
11383557 · 2022-07-12 · ·

A tire 2 includes: a tread 4 forming a tread surface 20; a band 14 disposed inward of the tread 4 in a radial direction; and a belt 12 disposed between the tread 4 and the band 14 in the radial direction. The tread 4 includes a center region 22 disposed at a center in an axial direction, and a shoulder region 24 disposed on an outer side in the axial direction. The band 14 includes a band cord. The band cord is helically wound and extends in a circumferential direction. The belt 12 includes a belt cord. The belt cord extends so as to be tilted relative to an equator plane. An absolute value of an angle of the belt cord relative to the equator plane is not less than 70° and not greater than 90°.

Tire

A tire comprises a tread reinforcing layer comprising a cord-reinforced part formed by winding a rubberized cord strip with at least one reinforcing cord covered with a topping rubber. The cord-reinforced part includes a mesh part in which first inclined segments and second inclined segments of the rubberized cord strip are inclined to opposite directions with respect to the tire circumferential direction. The first inclined segments intersect the second inclined segments, leaving space parts each having a quadrilateral shape. The mesh part has a tire-equator-side first region, a tread-edge-side second region and a third region therebetween, wherein the space parts within the tire-equator-side first region each have an area A1, the space parts within the tread-edge-side second region each have an area A2, and the space parts within the third region each have an area A3 which is smaller than the area A1 and larger than the area A2.

Pneumatic tire for a motorcycle
10882358 · 2021-01-05 · ·

A pneumatic tire for a motorcycle includes a tread reinforcing cord layer and a tread rubber. The tread rubber includes a base rubber layer and a pair of shoulder rubber layers. The base rubber layer includes a cover portion covering at least the tread reinforcing cord layer over an entire width thereof and a convex portion protruding radially outwardly from the cover portion to form a crown ground contacting surface. The shoulder rubber layers are arranged radially outside the cover portion to form shoulder ground contacting surfaces. The base rubber layer is made of a first rubber composition having larger hardness than the shoulder rubber layers, and the shoulder rubber layers are made of a second rubber composition containing larger amount of oil component than the base rubber layer.

PNEUMATIC TIRE
20200171885 · 2020-06-04 · ·

A pneumatic tire of the present disclosure comprises a resin-coated belt, a base ring that comes in contact with a tire widthwise outer end of the resin-coated belt is provided on a tire radial inside of the resin-coated belt, a tire widthwise inner end of the base ring is located on an inner side of the tire widthwise outer end of the resin-coated belt in a tire width direction, while a tire widthwise outer end of the base ring is located on an outer side of the tire widthwise outer end of the resin-coated belt in the tire width direction, and the resin-coated belt has a rigidity changing portion where a rigidity changes from the tire widthwise inner side toward outer side in a tire widthwise region from the tire widthwise inner end of the base ring to the tire widthwise outer end of the resin-coated belt.

TIRE

A tire comprises a tread reinforcing layer comprising a cord-reinforced part formed by winding a rubberized cord strip with at least one reinforcing cord covered with a topping rubber. The cord-reinforced part includes a mesh part in which first inclined segments and second inclined segments of the rubberized cord strip are inclined to opposite directions with respect to the tire circumferential direction. The first inclined segments intersect the second inclined segments, leaving space parts each having a quadrilateral shape. The mesh part has a tire-equator-side first region, a tread-edge-side second region and a third region therebetween, wherein the space parts within the tire-equator-side first region each have an area A1, the space parts within the tread-edge-side second region each have an area A2, and the space parts within the third region each have an area A3 which is smaller than the area A1 and larger than the area A2.

PNEUMATIC TIRE
20190077196 · 2019-03-14 · ·

A pneumatic tire comprises a belt layer disposed in the tread portion. The average cord angle n and average cord count Nn of the belt layer are constant or gradually increases or decreases from a center position to shoulder positions. The ratio ns/nc of the average cord angle ns at the shoulder positions to the average cord angle nc at the center position is 1.30 or less. The ratio Nns/Nnc of the average cord count Nns at the shoulder positions to the average cord count Nnc in the center position is 0.77 or more.

TIRE FOR TWO-WHEELED AUTOMOTIVE VEHICLE
20180312007 · 2018-11-01 · ·

A tire 2 includes: a tread 4 forming a tread surface 20; a band 14 disposed inward of the tread 4 in a radial direction; and a belt 12 disposed between the tread 4 and the band 14 in the radial direction. The tread 4 includes a center region 22 disposed at a center in an axial direction, and a shoulder region 24 disposed on an outer side in the axial direction. The band 14 includes a band cord. The band cord is helically wound and extends in a circumferential direction. The belt 12 includes a belt cord. The belt cord extends so as to be tilted relative to an equator plane. An absolute value of an angle of the belt cord relative to the equator plane is not less than 70 and not greater than 90.

PNEUMATIC TIRE FOR A MOTORCYCLE
20180126788 · 2018-05-10 · ·

A pneumatic tire for a motorcycle includes a tread reinforcing cord layer and a tread rubber. The tread rubber includes a base rubber layer and a pair of shoulder rubber layers. The base rubber layer includes a cover portion covering at least the tread reinforcing cord layer over an entire width thereof and a convex portion protruding radially outwardly from the cover portion to form a crown ground contacting surface. The shoulder rubber layers are arranged radially outside the cover portion to form shoulder ground contacting surfaces. The base rubber layer is made of a first rubber composition having larger hardness than the shoulder rubber layers, and the shoulder rubber layers are made of a second rubber composition containing larger amount of oil component than the base rubber layer.

Vehicle tire comprising a layer of circumferential reinforcing elements

A tire with radial carcass reinforcement comprises a crown reinforcement including a layer of circumferential reinforcing elements distributed axially at a variable pitch. The layer of circumferential reinforcing elements is radially crowned by a tread strip, which is connected to two beads by two sidewalls. The layer of circumferential reinforcing elements comprises five parts, including a central part, two intermediate parts and two axially outer parts. The value of the pitch in the two intermediate parts is less than a value of the pitch in the two axially outer parts. Each axially outer part is axially separated from the central part by a corresponding intermediate part. The value of the pitch in each intermediate part is less than a value of the pitch in the central part, and the value of the pitch in each axially outer part is less than the value of the pitch in the central part.