Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TIRE NOISE REDUCTION DEVICE AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2008/038629
Kind Code:
A1
Abstract:
A tire noise reduction device capable of improving vibration of a tire with durability of the tire secured and noise of the tire further reduced, and a pneumatic tire. The tire noise reduction device (1) has two main sound absorbing materials (3) for changing, in the circumferential direction of the tire, the cross-sectional area of the tire cavity (15) and also has two auxiliary sound absorbing materials (4) disposed between the main sound absorbing materials (3). The sound absorbing materials (3, 4) are formed of a porous material. Each main sound absorbing material (3) has a first sound absorbing part (3A) positioned on the tread inner surface (11a) side and also has a second sound absorbing part (3B) positioned on the side away from the tread inner surface (1a).The second sound absorbing part (3B) has lower density than the first sound absorbing part (3A). The auxiliary sound absorbing material (4) has higher density than the second sound absorbing part (3B) and less thickness than the main sound absorbing material (3).

More Like This:
JP2009045747METHOD FOR PRODUCING PNEUMATIC TIRE AND PNEUMATIC TIRE
WO/2012/044314TIRE AIR PRESSURE OPTIMIZATION SYSTEM FOR IMPROVING TREAD WEAR
JPH04297305COMBINATED STRUCTURE OF HEAVY DUTY RADIAL TIRE USED IN WINTER
Inventors:
TANNO ATSUSHI (JP)
TAKETANI MASAYUKI (JP)
Application Number:
PCT/JP2007/068552
Publication Date:
April 03, 2008
Filing Date:
September 25, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
MITSUBISHI MOTORS CORP (JP)
TANNO ATSUSHI (JP)
TAKETANI MASAYUKI (JP)
International Classes:
B60C5/00
Domestic Patent References:
WO2005012005A12005-02-10
WO2005012008A12005-02-10
WO2005072991A12005-08-11
WO2005087515A12005-09-22
WO2005058616A12005-06-30
Foreign References:
JP2003048407A2003-02-18
JP2003226104A2003-08-12
JP2005075206A2005-03-24
Other References:
See also references of EP 2067633A4
Attorney, Agent or Firm:
OGAWA, Shin-ichi et al. (Noguchi & Saika International Patent Office37 Kowa Building,4-5, Tsukiji 1-chom, Chuo-ku Tokyo, JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: CONTACT DETECTION DEVICE

Next Patent: METHOD FOR HIGH-LEVEL PRODUCTION OF PROTEIN BY UTILIZING ATF4 AND/OR GADD34