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:
Apr. 11, 2017
Filed:
Oct. 12, 2012
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Michio Hirayama, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, JP;
Abstract
[Object] To provide a pneumatic tirefrom which static electricity is easily discharged. [Solution] The tireincludes penetration portions, an under tread, a belt, a carcass, and clinches. The carcassincludes a large number of cords aligned with each other, and a conductive topping rubber. The electric resistance Rc of the carcass which is represented by the following mathematical formula is less than 1.0×10Ω./(2×3.14×)××10In the mathematical formula, ρ is the volume resistivity (Ω·cm) of the topping rubber of the carcass, g is the minimum thickness (mm) of the topping rubber, r is the distance (m) from the axis of the tire to an outer end, in the radial direction, of the clinch, and L is the length (m) of the carcass from an end of the reinforcing layer to the outer end, in the radial direction, of the clinch.