Patent ID: 7854659
Filing Date: 2010-12-21
Classification: F16D

Abstract:
1. A joint for the transmission of rotational motion between two rotatable elements, comprising: a first, single piece driven element consisting of a shaft and a head, said head including a first substantially cylindrical recess having a circular cross-section and a second, contiguous, recess in the form of a female partner of a coupling having coupling faces, the first recess having a larger diameter than the second recess, and a second, driving element consisting of a shaft, a collar freely fitted into said first recess, and a male partner of said coupling, said collar extending radially outwardly away from a central axis of the shaft of the driving element; wherein the driven element further comprises a circumferential lip at the edge of said first recess and extending radially inwardly toward a central axis of the shaft of the driven element and defining an inner diameter smaller than an outer diameter of the collar, thereby preventing in cooperation with said collar, the separation, in the axial direction, of said first and said second elements, the driven element further comprises a third recess contiguous with the second recess and opposite to the lip, the third recess is smaller than the second recess, a spring is disposed between the driven element and the driving element, the driven element further comprises a circumferential lip at the edge of said first, the respective dimensions of the coupling faces of said male and female partners differ to such an extent that said second driving element is tiltable out of alignment with said first element whilst retaining its engagement with said first element outlines of said male and said female partners are substantially of the shape of a cloverleaf with at least three leaves, the male and the female partners having the same number of leaves.