公开(公告)号：US20030084714A1

公开(公告)日：2003-05-08

申请号：US10001106

申请日：2001-11-02

Applicant: DELPHI TECHNOLOGIES INC.

Inventor： Huang Tsang Chang ,  Schuyler S. Shaw

IPC: G01L005/28

CPC classification number: G01L5/28

Abstract: An apparatus and method are provided for monitoring the wear of brake linings in a disc brake assembly having a caliper mounted in a floating manner on a mounting bracket, by determining a relative distance between the caliper and bracket. Determining the relative distance may be accomplished by attaching a first housing to the mounting bracket, and attaching a second housing to the caliper, with the first and second housings each including a bore facing one another, and aligning the bores with respect to one another along a common translational axis. A plunger inserted in the bores moves along the translational axis within the bores in proportion to lining wear, and the remaining lining thickness is monitored by determining a position of the plunger along the translational axis within the bores. The position of the plunger in the bores may be used for initiating a change in electrical state of an electrical circuit indicative of the relative axial distance of the caliper from the bracket.