Patent ID: 8144003

Claim:
A brake or clutch lining, comprising: a friction lining ( 22 ) arranged on a carrier plate ( 20 ), and means ( 28 , 30 , 24 ; 32 ) for detecting a critical operating temperature that includes an electrically conductive material ( 24 ) provided in at least one place in the friction lining, wherein said means for detecting a critical operating temperature includes two electric conductors ( 28 , 20 , 32 ) having ends, and the ends of the two electric conductors ( 28 , 30 , 32 ) are arranged in immediate vicinity of the material ( 24 ) in such a way that the electric resistance that can be measured between the electric conductors ( 28 , 30 , 32 ) is changed as a result of the phase transition of the material ( 24 ), and wherein the phase-transition temperature of said electrically conductive material falls within a predetermined range of temperatures near or at the critical operating temperature.