Patent ID: 7083522

Claim:
Synchronizing revolute joint comprising: An external joint member having defined therein three circumferentially arranged and axially extending tracks, an internal joint member with three circumferentially arranged and radially extending pivots oriented with the tracks and including bearing surfaces, rolling bearings arranged between the external joint member and the internal joint member wherein each rolling bearing includes an inner race with a rolling bearing inner surface, the shape of the inner surface being adapted to the bearing surfaces of the pivots so as to enable the pivots of the internal joint member inserted into the inner race to perform therein a tilting motion but not a linear displacement motion, each rolling bearing also including an outer race with an outer surface, the shape of the outer surface being adapted to the tracks of the external joint member so as to enable an outer race inserted into a track to perform therein a linear displacement motion but not a tilting motion, a plurality of rollers is arranged between the inner race and the outer race enabling the outer race to roll on the inner race; wherein the inner race further includes an axial guide that determines the position of the rollers in relation to the inner race in the axial direction, wherein the inner race and the outer race are axially displaceable against each other, wherein the inner race is formed as one piece, wherein the inner race is rotatable in relation to the external joint member, wherein the outer race comprises a stop limiting the relative axial displaceability of the inner race at least in one direction of displacement, and wherein the stop is formed on the outer race and the outer contour of the inner race does not project over the stop.