Patent ID: 8468649

Claim:
A joint system arranged between a driven tool that is movable over a surface on which work is to be done, and a manual steering member, and that comprises a first piece secured to the tool and suitable for pivoting about a horizontal axis, and a second piece secured to the member and attached to the first piece, and mounted to be articulated about an axis arranged in a plane orthogonal to the horizontal axis; wherein at least the second piece is formed by a flexible structure having a longitudinal neutral axis and including a base fastened to the first piece of the tool, and a head fastened to the member; with said base and said head being interconnected via a pair of splines that are opposite and parallel to the neutral axis and that extend in a plane transverse to the horizontal axis, it being possible for said pair to be flexed under the effect of a force applied orthogonally to its plane and transmitted by the manual member.