Brakes – With condition indicator – Wear
Reexamination Certificate
2007-01-23
2007-01-23
Williams, Thomas (Department: 3683)
Brakes
With condition indicator
Wear
C188S00111E, C073S129000, C340S454000
Reexamination Certificate
active
10963398
ABSTRACT:
A modular electrical resistance sensor is positionable in gaps between brake linings for a drum brake. The modular sensor is worn with the brake linings resulting in steadily increasing electrical resistance of the modular sensor. A measurement circuit associated with the modular sensor is programmed to equate electrical resistance to the degree of wear when the sensor has assumed a steady state temperature at or near the ambient temperature. Otherwise, particularly during periods of use of the brakes, resistance and the degree of wear last calculated become arguments into a function for determining brake lining temperature.
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Askew Gerald W.
Calfa Jeffrey P.
International Truck Intellectual Property Company, LLC
Lukasik Susan L.
Williams Thomas
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