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:
Oct. 28, 2008
Filed:
May. 26, 2004
Barry Dunbridge, Torrance, CA (US);
Kenneth L. Brown, Manhattan Beach, CA (US);
George W. Mciver, Redondo Beach, CA (US);
Kiran R. Magiawala, Hawthorne, CA (US);
Kelley D. Chilcott, Redondo Beach, CA (US);
Barry Dunbridge, Torrance, CA (US);
Kenneth L. Brown, Manhattan Beach, CA (US);
George W. McIver, Redondo Beach, CA (US);
Kiran R. Magiawala, Hawthorne, CA (US);
Kelley D. Chilcott, Redondo Beach, CA (US);
TRW Automotive U.S. LLC, Livonia, MI (US);
Abstract
A tire and suspension monitoring and warning system consisting of a set of multi-function sensors that monitor and warn of a failure mode. The system monitors and warns for tire imbalance, tire tread wear, and shock absorbers for a tire attached to a vehicle. The monitoring and warning system includes one axial, radial, and lateral acceleration measurement of the wheel to provide acceleration signal sample power. For tire imbalance, signal sample power in the second harmonic of the tire rotational frequency is compared to that of the first harmonic. For tire tread wear, average signal sample power within a second frequency range is compared to a previously stored baseline value. For shock absorber performance, a sum of all frequency components in a second predetermined frequency range is compared to a baseline value.