Patent ID: 8136641
Filing Date: 2012-03-20
Classification: F16D,Y10T

Abstract:
1. An actuating mechanism, comprising a screw actuator having a screw and a nut threadably coupled together, an electric drive for driving one of said screw and said nut axially relative to the other and comprising a stator and a rotor, a sleeve assembly including a generally cylindrical sleeve interposed between said rotor and said nut and supporting said rotor for rotation relative to said sleeve, said rotor being connected to one of said screw or said nut for rotating said screw or said nut, said screw actuator being at least partly mounted within said sleeve and being arranged to bear against a portion of said sleeve assembly to transmit axial thrust to said sleeve assembly, and by that transmission, to place said sleeve in tension, and said sleeve assembly cooperating with an abutment to transmit the axial thrust to said abutment, wherein said sleeve assembly comprises projections for transmission of axial thrust load, a first pair of said projections extend radially outwardly respectively for engagement with opposite sides of said abutment, while a further projection extends radially inwardly for engagement with said screw actuator.