The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2006
Filed:
Jul. 27, 2000
Mamoru Uchida, Akashi, JP;
Naohiko Kikuchi, Kobe, JP;
Narihiro Tahara, Akashi, JP;
Takeshi Ohta, Toyonaka, JP;
Mamoru Uchida, Akashi, JP;
Naohiko Kikuchi, Kobe, JP;
Narihiro Tahara, Akashi, JP;
Takeshi Ohta, Toyonaka, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Abstract
There is provided a studless tire that is excellent especially in performance on a snow or ice road. A studless tire, wherein non-metal staple fibers having an average fiber diameter of 1 to 100 μm and an average length of 0.1 to 5 mm are dispersed in a diene rubber in such a way that the non-metal staple fibers are oriented in a thickness direction of a tread, a complex elastic modulus Ein the thickness direction of the tread and an elastic module Ein a circumferential direction of the tire measured at 25° C. satisfy the equation 1.1≦E/E≦4, and hardness of the tread rubber measured at −10° C. is 45 to 75 degrees.