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. 27, 2008
Filed:
Sep. 29, 2005
Neel K. Mani, Stow, OH (US);
David A. Johnson, Wadsworth, OH (US);
Michael A. Berzins, Brecksville, OH (US);
Gregg Rasor, Cuyahoga Falls, OH (US);
Neel K. Mani, Stow, OH (US);
David A. Johnson, Wadsworth, OH (US);
Michael A. Berzins, Brecksville, OH (US);
Gregg Rasor, Cuyahoga Falls, OH (US);
Bridgestone Firestone North American Tire, LLC, Nashville, TN (US);
Abstract
An improved method for determining an initial flat spot magnitude on a tire that has been resting for a period of time on a substantially flat surface uses regression analysis. In accordance with the method, values of a tire flat spot magnitude for a particular type of tire are determined at a number of measurement intervals by a uniformity machine that spins the tire. An equation having at least two exponentially decaying terms is then determined that corresponds to the measured data points. Regression analysis is then used to determine an estimate for an initial flat spot magnitude. The method can be used to evaluate the effectiveness of different tire designs with respect to flat spot recovery rates.