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:
Oct. 11, 1994
Filed:
Jun. 04, 1993
Atao Kishi, Hiratsuka, JP;
Kazuyuki Kabe, Hiratsuka, JP;
The Yokohama Rubber Company, Ltd., Tokyo, JP;
Abstract
A pneumatic radial tire formed so that, when the tire is inflated from a non-inflated state, in which the inner pressure thereof is 5% of a normal lever, to a normal inner pressure, a central region of the outer surface of the tread in a meridional cross section of the tire which is between two points P.sub.1, P.sub.1 ' spaced from the center P.sub.0 of a tread width to left and right along the outer surface of the tread by a distance L, which is expressed by the formula 0.25TW.ltoreq.L<0.50TW, with respect to a width TW of a ground contacting portion of the bread grows outward in the radial direction of the tire, shoulder regions on both outer sides of the two points P.sub.1, P.sub.1 ' contracting inward in the radial direction of the tire, with a radius of curvature R.sub.2 of a region, which is formed between two intermediate points P.sub.2, P.sub.2 ', which are positioned halfway respectively between the center P.sub.0 of the tread width and shoulder end portions on the left and right sides thereof, in such a manner that this region includes the two intermediate points P.sub.2, P.sub.2 ', varying to be smaller than a radius of curvature R.sub.1 of the same region in a non-tire-inflated state.