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. 25, 2004
Filed:
Apr. 09, 2002
James A. Evans, Talluleh, LA (US);
George L. Mason, Vicksburg, MS (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A flexible piezoelectric-based transducer, mounted on a circumference of a rotating object senses acoustical energy traversing portions of the object. In a preferred embodiment, the transducer is affixed, using a suitable adhesive, within the enclosed portion of a wheel/tire assembly. The transducer senses acoustical energy, e.g., ultrasonic transmissions, generated by the tire contacting the road surface at its contact patch and, without need of external power, translates it to an electrical current and communicates it for further processing. Because the acoustical impedance of the tire casing changes with temperature, hot spots within the tire, as well as other characteristics of the tire's operation, can be detected. Further, any Doppler shift which occurs due to the rotating medium may be compensated for since the rate of tire rotation may be made known via a speed sensor. A position sensor may also be employed to indicate the position of the hot spot.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile