Patent ID: 7000741

Claim:
A self-boosting, electromechanical friction brake, comprising: first and second friction brake elements ( 42 , 44 ), a brake body, an electromechanical actuating device, including an electric motor ( 33 ), operable to press the first and second friction brake elements ( 42 , 44 ) against the brake body for braking, and a self-boosting device which converts a frictional force, exerted upon pressing of the first and second friction brake elements ( 42 , 44 ) against the brake body on the first and second friction brake elements ( 42 , 44 ) by the brake body, into a pressure force, which in addition to a pressure force exerted by the actuating device presses the first and second friction brake elements ( 42 , 44 ) against the brake body, the self-boosting device comprising ramps ( 48 ) on inside of each of the first and second friction brake elements ( 42 , 44 ) oriented toward one another, on which cylindrical roller bodies ( 46 ) are disposed, wherein the brake body ( 12 , 14 , 54 , 56 ) forms a housing for the friction brake ( 10 ) and is fixed and the first and second friction brake elements ( 42 , 44 ) and the self-boosting device ( 46 , 48 ) are rotatable within the housing formed by the brake body ( 12 , 14 , 54 , 56 ); wherein at least a part of the actuating device ( 26 , 34 , 36 , 38 ) rotates with the first and second friction brake elements ( 42 , 44 ) and the self-boosting device ( 46 , 48 ); and wherein the first and second friction brake elements ( 42 , 44 ) and with it the self-boosting device ( 46 , 48 ) and the actuating device ( 26 , 34 , 36 , 38 ) are braked by pressing of the first and second friction brake elements ( 42 , 44 ) against the brake body ( 12 , 14 , 54 , 56 ).