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. 16, 2002
Filed:
Feb. 24, 2000
Frank Philpott, Waldbredimus, LU;
Laurent Colantonio, Bastogne, BE;
Gia Van Nguyen, Rossignol, BE;
Alain Emile Francois Roesgen, Luxembourg, LU;
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A pneumatic radial ply runflat tire ( ) has a tread ( ), belt structure ( ), a carcass ( ), and an underlay ( ) disposed between the belt structure and the carcass. The carcass ( ) comprises two sidewalls ( ), two beads ( ), and one or more radial plies ( ). The tire ( ) is characterized by the underlay ( ) having reinforcement cords ( ) with turns aligned parallel to the tire's equatorial plane, the cords ( ) exhibiting negligible modulus of elasticity (“modulus”) below a threshold elongation and high modulus above the threshold elongation. The underlay ( ) stiffens the tire during runflat operation but not during normal inflated operation.