Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2017/170208
Kind Code:
A1
Abstract:
A tire (1) is provided, on the tread portion (10) thereof, with groove parts (70) extending in the tire circumferential direction (TC); first land parts (81) positioned to the inside in the tire width direction (TW), and having first groove walls (71) forming the groove parts (70); and second land parts (82) having second groove walls (73). Protrusions (100) extending contiguously from the first groove walls (71) to the second groove walls (73) are provided at the groove bottoms (72) of the groove parts (70). In a tread surface view, the protrusions (100) are provided with a linear portion (110) and a curved portion (120) that is contiguous with the linear shaped portion (110). A slit (200) crossing the protrusion (100) is formed in at least one of the end parts (100a, 100b) of the protrusions (100). Shallow grooves (300) which extend less deeply in the radial direction (TD) of the tire than the groove parts (70) and at an angle with respect to the tire width direction (TW) are provided in the first land parts (81). The linear portions (110) of the protrusions (100) extend at an angle in the same direction, with respect to the tire circumferential direction (TC), as the shallow grooves (300) extending at an angle.
Inventors:
MATSUNAGA MIDORI
Application Number:
PCT/JP2017/011966
Publication Date:
October 05, 2017
Filing Date:
March 24, 2017
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C11/13; B60C11/03; B60C11/12
Domestic Patent References:
| WO2012090917A1 | 2012-07-05 | |||
| WO2008114668A1 | 2008-09-25 | |||
| WO2012090917A1 | 2012-07-05 |
Foreign References:
| JP2004224268A | 2004-08-12 | |||
| JP2008302740A | 2008-12-18 | |||
| JP2012116339A | 2012-06-21 | |||
| JP2014218232A | 2014-11-20 | |||
| US20150343849A1 | 2015-12-03 | |||
| JP2016063787A | 2016-04-28 |
Other References:
See also references of EP 3437899A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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