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:
Nov. 19, 2002
Filed:
Aug. 09, 2001
Schuyler S. Shaw, Dayton, OH (US);
Bryan P. Riddiford, Dayton, OH (US);
Huang-Tsang Chang, Dayton, OH (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A system and method for monitoring brake pad wear are provided. The system provides a vehicle disc brake caliper assembly including a boot assembly and least one friction pad. The system further provides at least one caliper bolt including a caliper bolt switch point, the caliper bolt movably positioned within the boot assembly. A conductive element is positioned a predetermined distance from the caliper bolt switch point. An electrical circuit is switched when the conductive element contacts the switch point. The contact is established when the friction pad wears to a predetermined level corresponding to the predetermined distance. The method provides a caliper bolt including a caliper bolt switch point. A conductive element is positioned a predetermined distance from the caliper bolt switch point. The predetermined distance is progressively decreased as the brake pad wears. An electrical circuit is switched when the conductive element contacts the caliper bolt switch point.