Brake monitoring system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 5, 2002
Grant Date -
N/A
app pub date -
Mar 22, 2000
filing date -
Mar 22, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vehicle brake monitor for a brake actuator having a housing and a rod reciprocal through an opening in the housing. The brake monitor includes a magnet and a sensor located within the magnetic field of the magnet and fixed relative to the housing, and a shunt which is reciprocal with the brake actuator rod between the magnet and the sensor which interrupts a signal between the sensor and the magnet when the shunt is located between the magnet and the sensor during reciprocal movement of the rod, signaling at least one position of the rod relative to the housing. The disclosed embodiment of the brake monitor includes a sensor sleeve having two pairs of generally opposed magnets and sensors and a shunt sleeve surrounding the brake actuator rod having a pair of circumferentially spaced shunts which reciprocate with the brake actuator rod between each of the pairs of sensors and magnets, sensing and indicating several conditions of the brake actuator, including an overstroke condition, dragging brake, a failure of the brake monitoring system and normal operation.
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