F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
188/129
F16D 66/02 (2006.01)
Patent
CA 1245994
BAKE LINING WEAR SENSOR AND INDICATING CIRCUIT Abstract of the Disclosure A brake lining wear sensor includes a metal contact secured to a grounded brake lining support plate through a semiconductive ceramic bushing containing silicon carbide and silicon nitride which establishes an electrical resistance between the contact and the support plate so that the contact has a resistance to ground when the brake lining is not worn, but when the brake lining is worn and the contact touches a grounded brake rotor or drum, a short to ground occurs. The sensor is coupled by a lead wire to an indicator circuit which tests for the resistance value in the circuit path to ground to determine whether the contact is connected to the indicator circuit and whether it is electrically grounded to the rotor. An indicator lamp comprises a tri-color LED to emit different colors signifying a normal condition, an open circuit or a worn brake lining condition.
484587
General Motors Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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