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:
Jul. 10, 2007
Filed:
Feb. 12, 2003
Mark Layne Shaw, Casa Grande, AZ (US);
Mark Layne Shaw, Casa Grande, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A system () and method manages battery () power in a wheel module () for indicating when air pressure in a tire falls below a recommended value. Tire air pressure is sensed with a pressure sensor (). Tire air temperature is sensed with a temperature sensor (). A determination is made whether the air pressure is increasing or decreasing with respect to time. Based upon whether a ratio of the air pressure and the air temperature is increasing, decreasing or remaining constant with respect to time, tire motion is inferred without directly sensing acceleration or movement of the tire. Power management circuitry () controls battery power to enable sensing of air pressure and air temperature at measurement intervals that are longer in time when the tire is not in motion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile