Abstract: A drive aft has two universal joints. The universal joint (1) is connected to a sliding sleeve (9). The other universal joint carries a sliding journal (8). The sliding journal (8) and the sliding sleeve (9) engage one another in a rotationally fast way via teeth (11, 22). The teeth (11, 22) are longitudinally displaceable relative to one another in the direction of a longitudinal axis (10). In order to prevent the driveshaft, in the fitted condition, from falling apart after having suffered a fracture, an anti-disengagement member is provided. The member includes an annular stop (13) arranged at the end of the sliding journal (8). The stop (13) may be fitted through an aperture (15) in the joint yoke (4) of the first universal joint (1). The stop (13) stops against a suitable face of the inner longitudinal teeth (22) when the sliding sleeve (9) and the sliding journal (8) are moved apart by a change in length distance (16).

Abstract: A cylinder head gasket includes first and second opposite sheet metal cover plates; a combustion chamber opening being formed by aligned apertures in the cover plates; and first and second beads provided in the first and second cover plates, respectively. Each bead has a convex side; the convex sides of the first and second beads are oriented toward one another. The first and second beads are in an orthogonal alignment with one another and surround the combustion chamber opening. The cylinder head gasket further has a spacer plate positioned between the first and second cover plates and is contacted by the convex side of the first and second beads. The spacer plate has an aperture which is in general alignment with the apertures in the cover plates and is defined by an edge face of the spacer plate. There is further provided a separate annular insert positioned in the aperture of the spacer plate.