Pneumatic tire
AssigneeBridgestone Corporation
InventorMasashi Yamaguchi
Life of this patent
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Abstract
The present invention relates to a pneumatic tire 1 in which turbulent-flow generating projections 10 each extending from an inner circumference side to an outer circumference side are provided on a outer circumferential face 3a which is tire surface of tire side portion 3 at intervals in a tire circumferential direction. Each of the turbulent-flow generating projections 10 includes an edge portion 10g when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof, and a front wall angle θ formed between a front wall face 10a of each turbulent-flow generating projection 10 and the tire surface (outer circumferential face 3a) is set in the range of 70° to 110°, the front wall face being hit by an airflow.
Claims14
A pneumatic tire in which turbulent-flow generating projections each extending from an inner circumference side to an outer circumference side, and provided on an outer tire surface at intervals in a tire circumferential direction, wherein:
- each of the turbulent-flow generating projections includes an edge portion when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof;
- and
- a front wall angle formed between a front wall face of each turbulent-flow generating projection and the tire surface is set in the range of 70° to 110°, the front wall face being hit by an airflow,
- wherein the turbulent-flow generating projections are provided in a tire side portion,
- wherein relationships of 8.0≦p/h≦50.0 and 10.0≦(p−w)/w≦50.0 are satisfied where:
- h denotes the height of each of the turbulent-flow generating projections;
- p denotes a pitch of adjacent ones of the turbulent-flow generating projections in a tire rotation direction;
- and w denotes a lower side width of each of the turbulent-flow generating projections in the cross-sectional shape,
- wherein the turbulent-flow generating projections are provided at regular intervals in the tire circumferential direction,
- wherein the pneumatic tire is a heavy-duty tire specified by the standards determined by The Tire and Rim Association, Inc. Year Book in the United States of America.
A pneumatic tire in which turbulent-flow generating projections each extending from an inner circumference side to an outer circumference side, and provided on an outer tire surface at intervals in a tire circumferential direction, wherein:
- each of the turbulent-flow generating projections includes an edge portion when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof;
- and
- a front wall angle formed between a front wall face of each turbulent-flow generating projection and the tire surface is set in the range of 70° to 110°, the front wall face being hit by an airflow,
- wherein the turbulent-flow generating projections are provided in a tire side portion,
- wherein relationships of 8.0≦p/h≦50.0 and 10.0≦(p−w)/w≦50.0 are satisfied where:
- h denotes the height of each of the turbulent-flow generating projections;
- p denotes a pitch of adjacent ones of the turbulent-flow generating projections in a tire rotation direction;
- and w denotes a lower side width of each of the turbulent-flow generating projections in the cross-sectional shape,
- wherein the turbulent-flow generating projections are provided at regular intervals in the tire circumferential direction,
- wherein a relationship of 10.0≦(p−w)/w≦25.0 is satisfied where:
- p denotes a pitch of adjacent ones of the air turbulent-flow generating projections in a tire rotation direction;
- and w denotes a lower side width of each of the air turbulent-flow generating projections in the cross-sectional shape.
A pneumatic tire in which turbulent-flow generating projections each extending from an inner circumference side to an outer circumference side, and provided on an outer tire surface at intervals in a tire circumferential direction, wherein:
- each of the turbulent-flow generating projections includes an edge portion when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof;
- and
- a front wall angle formed between a front wall face of each turbulent-flow generating projection and the tire surface is set in the range of 70° to 110°, the front wall face being hit by an airflow,
- wherein the turbulent-flow generating projections are provided in a tire side portion,
- wherein relationships of 8.0≦p/h≦50.0 and 10.0≦(p−w)/w≦50.0 are satisfied where:
- h denotes the height of each of the turbulent-flow generating projections;
- p denotes a pitch of adjacent ones of the turbulent-flow generating projections in a tire rotation direction;
- and w denotes a lower side width of each of the turbulent-flow generating projections in the cross-sectional shape,
- wherein the turbulent-flow generating projections are provided at regular intervals in the tire circumferential direction,
- wherein a relationships of 8.0≦p/h≦14.0 is satisfied where:
- h denotes a height of each of the air turbulent-flow generating projections and p denotes a pitch of adjacent ones of the air turbulent-flow generating projections in a tire rotation direction.
Dependencies are inferred from the claim text.