Patent ID: 7429271
Filing Date: 2008-09-30
Classification: A61F,Y10T

Abstract:
1. A clamping freewheel having a sleeve ( 5 ) which encloses a shaft ( 7 , 9 ) and in which the shaft ( 7 , 9 ) is mounted in an axially displaceable manner, having rolling elements ( 6 ) which are arranged in chambers formed between shaft ( 7 , 9 ) and sleeve ( 5 )in such a way that said rolling elements roll in a first direction for a relative rotation between shaft ( 7 , 9 ) and sleeve ( 5 ), whereas a torque acting in the opposite direction leads to the clamping of the rolling elements ( 6 ) in their chamber, said clamping freewheel further having a transmission element ( 11 ) arranged on the shaft ( 7 , 9 ) and having an actuating element ( 16 ) for the axial displacement of the transmission element ( 11 ) arranged on the shaft ( 7 , 9 ), wherein the shaft ( 7 , 9 ) comprises a hollow shaft piece ( 7 ) and an inner piece ( 9 ) axially displaceable therein, but mounted in a rotationally locked manner, and wherein the actuating element ( 16 ) and the transmission element ( 11 ) are arranged on the inner piece ( 9 ), wherein the inner piece ( 9 ) is of a profiled design which deviates from the circumference of a circle and the hollow shaft piece ( 7 ) has a complementary inner profile ( 8 ) to said profiled design of said inner piece ( 9 ) whereby the inner piece ( 9 ) and the hollow shaft piece ( 7 ) are rotationally locked and whereby axial displacement of said inner piece ( 9 ) is made independent of said clamping of said rolling elements.