US 9,809,064 B2
Pneumatic tire
Toshiki Nagai, Tokyo (JP)
Assigned to BRIDGESTONE CORPORATION, Tokyo (JP)
Appl. No. 14/425,217
Filed by BRIDGESTONE CORPORATION, Tokyo (JP)
PCT Filed Sep. 11, 2013, PCT No. PCT/JP2013/005390
§ 371(c)(1), (2) Date Mar. 2, 2015,
PCT Pub. No. WO2014/064880, PCT Pub. Date May 1, 2014.
Claims priority of application No. 2012-234987 (JP), filed on Oct. 24, 2012.
Prior Publication US 2015/0217604 A1, Aug. 6, 2015
Int. Cl. B60C 15/00 (2006.01); B60C 15/024 (2006.01); B60C 5/00 (2006.01); B60C 13/02 (2006.01); B60C 15/06 (2006.01); B60C 13/00 (2006.01)
CPC B60C 15/0242 (2013.01) [B60C 5/00 (2013.01); B60C 13/02 (2013.01); B60C 15/06 (2013.01); B60C 13/003 (2013.01); B60C 2015/061 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A tire-rim assembly of a pneumatic tire and a prescribed rim, the tire comprising at least sidewall portions and rim guards, the rim guards each being provided at the corresponding sidewall portion to protrude on the outer side in the tire width direction, wherein:
in a cross section of the tire in the width direction thereof in a state where the tire has been assembled with the prescribed rim and inflated at prescribed internal pressure with no load thereon, each rim guard has at least one peak;
an outer contour line, of the rim guard, situated on the outer side in the tire radial direction than the outermost peak in the tire radial direction of the at least one peak, has an arcuate configuration of which the center of curvature is located on the external side of the tire;
radius of curvature R of the outer contour line is in the range of 5 mm≤R<8 mm;
provided that H represents a distance in the tire radial direction measured from the innermost peak in the tire radial direction of the at least one peak of the rim guard to the outermost position in the tire radial direction of a rim flange, 10 mm<H≤40 mm; and
in the cross section of the tire in the width direction thereof, an outer contour line of a portion, on the inner side in the tire radial direction than the innermost peak to the outermost position in the tire radial direction of the rim flange, of the rim guard is constituted exclusively of a curved configuration concaved from the outer side toward the inner side in the tire width direction.