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:
Jan. 12, 1993
Filed:
Dec. 05, 1990
Ryoji Hanada, Isehara, JP;
Masaki Noro, Hiratsuka, JP;
Yukimasa Minami, Hiratsuka, JP;
Motohide Takasugi, Hiratsuka, JP;
The Yokohama Rubber Co., Tokyo, JP;
Abstract
A pneumatic radial tire for a passenger vehicle, characterized in that at least a portion of a carcass line extending radially outwardly from the maximum width position in a carcass line of a tire fitted to a normal rim and inflated up to its normal internal pressure is configured so as to substantially conform to an equilibrium carcass line expressed by the following equations (1) and (2) calculated by using an internal pressure allotment ratio g(y) of a carcass layer at the tread portion that is obtained by setting the distributional configuration index .alpha. of the following equation (3) at 4 or more, and that the width of the belt layer extending radially outwardly of the tire is made to range from 105 to 120% of the ground-contacting width of the tread portion when loaded with a designed normal load, wherein: ##EQU1## wherein, provided that a line drawn vertically downwardly from the center of the tread portion to the axle of the tire is y axis of coordinates with the axle of the tire being z axis of coordinates, yA, yD, yC, yB and .eta. denote as follows: