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. 12, 1994
Filed:
Jan. 19, 1993
Jack E Brown, Jr, Akron, OH (US);
Archie E Ni, Akron, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A pneumatic tire having two different bead diameters has handling, ride and treadwear advantages. The tire is made so that the rho.sub.m of the longer sidewall and the rho.sub.m of the shorter sidewall are equal. The rho.sub.m of the longer sidewall is made equal to the rho.sub.m of the shorter sidewall by establishing a belt profile wherein the amount of drop at a belt edge is specified to give a mold drop of 0.30 to 0.33 of estimated tire deflection, applying an inflated shape prediction formula to calculate the inflated belt profile and varying the value of rho.sub.m until the drop at the end of the belt closely matches a specified value, using the cosine law to specify the change in belt angle with radius, choosing a shoulder point under the belt edge that allows a 0.050 inch wedge between the bottom of the belt and the top of the carcass ply and varying the slope of the ply at the shoulder point until the inflated ply line passes through the Y-max location at rho.sub.m.