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. 12, 2020
Filed:
Dec. 06, 2017
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Masako Nakatani, Kobe, JP;
Takahiro Kawachi, Kobe, JP;
Nanaho Kami, Kobe, JP;
Ayuko Yamada, Kobe, JP;
Takuya Horiguchi, Kobe, JP;
Tatsuhiro Tanaka, Kobe, JP;
Keiji Takagi, Kobe, JP;
Subaru Toya, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-shi, Hyogo, JP;
Abstract
To be capable of preventing deterioration of uniformity after puncture repair while suppressing running noise. [Solution] A pneumatic tirecomprises a noise damperfixed to a tire inner cavity surface of a tread portionand formed of a porous material. The noise damperincludes a first partarranged on an outer side in a tire radial direction and fixed to the tire inner cavity surface, and a second partarranged on an inner side in the tire radial direction of the first partand exposed in a tire inner cavity. A water absorption rate of the first partcalculated by a following formula (1) is in a range of from 5% to 25%. Air permeability of the second partmeasured in accordance with Japanese Industrial Standard JIS-L1096 is in a range of from 1 to 7 cm3/cm2/s. The formula (1) is:water absorption rate (%)=weight change before and after immersion (g)/volume at 50% compression (cm3)×100   (1).