Patent ID: 6311804
Filing Date: 2001-11-06
Classification: B60T,F15B,F16D

Abstract:
An electrical brake position detecting system in a hydraulically operated brake assembly, the brake position detecting system comprising:a piston housing extending along a longitudinal axis and having an inner wall made from an electrically non-conductive material;a piston displaceable axially reciprocally in the housing along a path;a plurality of axially spaced apart electro conductive pads fixedly mounted on the inner wall of the piston housing in predetermined locations;an electro conductive segment fixedly mounted on the inner wall within the piston housing and extending axially along the path, the pads and segment being spaced angularly apart;an electrical conductor mounted to the piston for movement therewith and extending radially between each of the pads and segment to establish successive electrical connection therebetween through the electrical conductor as it comes in direct contact with the segment and each of the pads during displacement of the piston; anda position detecting circuit coupled to each of the pads and the segment for detecting the electrical connections to generate a signal indicative of the positions of the piston corresponding to the predetermined locations of the pads along the path.