Patent ID: 8251098

Claim:
A slide vane ( 20 ) for a hydraulic power steering of automotive vehicles, said slide vane comprising: a tubular control sleeve ( 24 ) that is connected to an output shaft ( 28 ) and comprises first control grooves ( 32 ) in its inner surface ( 34 ); a tubular sliding sleeve ( 26 ) that is disposed at least in portions within said control sleeve ( 24 ), said sliding sleeve comprises on its outer surface ( 38 ) second control grooves ( 36 ) that may be brought to coincide with the first control grooves ( 32 ) of the control sleeve ( 24 ); said first control grooves ( 32 ) being disposed substantially in the circumferential direction of the tubular control sleeve ( 24 ) and said second control grooves ( 36 ) substantially in the circumferential direction of said tubular sliding sleeve ( 26 ) and the relative position of said control sleeve ( 24 ) and of said sliding sleeve ( 26 ) being relatively variable in the axial direction along a longitudinal axis x-x.