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Patent Searching and Data


Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2017/122742
Kind Code:
A1
Abstract:
Provided is a pneumatic tire which enables excellent traveling performance on muddy ground, snowy roads, sandy ground and the like. The pneumatic tire is provided with main grooves (12) that extend in the circumferential direction of the tire at the shoulder region of a tread part (1), and a plurality of lug grooves (41) that extend outwards in the tire width direction from the main grooves (12) and that reach a sidewall part (2). A plurality of blocks (42) are partitioned by the main grooves (12) and the lug grooves (41). The innermost edges of the blocks (42) in the radial direction of the tire are disposed outwards from the tire maximum width position in the tire radial direction. The ratio h/H, relative to the tire cross-section height H, of the vertical distance h from the ground contact end (E) positions to the innermost edges of the blocks (42) in the radial direction of the tire is set to at least 0.2. A plurality of recesses (45) having blocked peripheries is provided to each side region (S) outwards in the tire width direction from the ground contact ends (E) of the blocks (42). The ratio Sin/Sout of the total area Sin of the plurality of recesses (45) in each block relative to the area Sout of the side region (S) of each block is set such that 0.2≤Sin/Sout≤0.6.

Inventors:
YAMAKAWA TAKAHIRO (JP)
Application Number:
PCT/JP2017/000872
Publication Date:
July 20, 2017
Filing Date:
January 12, 2017
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C11/03; B60C11/01
Foreign References:
JPH06344723A1994-12-20
JP2013216146A2013-10-24
JP2003237318A2003-08-27
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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