Importance

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Abstract

The invention relates to a rotation transmission device and a motor vehicle seat adjustment system comprising one such device. The inventive transmission device comprises a flexible shaft and a casing which houses the shaft therein. The aforementioned casing comprises a core consisting of a hollow cylinder having an inner diameter which is dimensioned such as to enable the rotation of the shaft inside said core. The core of the device comprises at least one bearing-forming zone which is obtained by means of plastic deformation, said zone comprising at least three parts, namely: two outer parts and one central part. The axes of the above-mentioned parts are essentially parallel to that of the core while the diameter of said parts is essentially equal to that of the core. Moreover, the outer parts are substantially coaxial and comprise an axis which is offset in relation to the axes of the central part and the core.

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First Claim