Abstract: A dog clutch operative to provide shiftably connection. A first clutch element includes a plurality of dogs selectively engagable with a plurality of counterdogs coupled to the second clutch element for selectively coupling primary and secondary rotatable parts. The second clutch element further includes a bush coupled to the secondary rotatable part and an intermediate part containing the counterdogs. The intermediate part can be selectively coupled to the bush for selectively coupling the second clutch element and the secondary part.

Abstract: A clutch for the shiftable connection of a primary part to a secondary part is a dog clutch, of which the dogs (12) and counterdogs (15) meshing one in the other in the engaged state are frontal dogs. In order to ensure a rapid opening of a generic clutch even under load, between the primary part (11) and the secondary part (8) an intermediate part (14) is provided which has the counterdogs (15) on its side facing the dogs (12) and, on its side facing away from the dogs (15), can be positively connected fixedly in terms of rotation via radially displaceable elements (17) to the secondary part (8) or to a part connected fixedly in terms of rotation to the latter, the position of these (17) being determined by the position of the shift sleeve (23). The radially displaceable sliding pieces (17) are guided in the intermediate part (14) and can be connected fixedly in terms of rotation via a deflecting coupling toothing (20, 21) to a bush (18) displaceable on the secondary part (8).