Abstract: A trailer coupling for a motor vehicle comprises a coupling arm, on the free end region of which a ball neck is formed, on which a coupling ball is arranged. The coupling ball is spherical on the side facing away from the ball neck and has a spherical segment plane on the side facing the ball neck. Between the spherical segment plane and a portion of the ball neck has a smaller outer circumference than the spherical segment plane there is arranged a throat portion having a transition contour extending in a concave manner between the ball neck and the spherical segment. The transition contour transitions with a coupling ball transition region into an external contour of the coupling ball and transitions with a ball neck transition region into an outer surface of the ball neck. The transition contour has a curved configuration having a non-constant radius.

Abstract: The invention relates to a trailer coupling for a motor vehicle, wherein the trailer coupling has a coupling arm, on the free end region of which a ball neck is formed, on which a coupling ball is arranged for attaching a trailer or coupling a load carrier to the motor vehicle. The coupling ball is spherical on the side thereof facing away from the ball neck and has a spherical segment plane on the side thereof facing the ball neck. Between the spherical segment plane and a portion of the ball neck which has a smaller outer circumference than the spherical segment plane there is arranged a throat portion having a transition contour extending in a concave manner between the ball neck and the spherical segment. The transition contour transitions with a coupling ball transition region into an external contour of the coupling ball, in particular into the spherical segment plane, and transitions with a ball neck transition region into an outer surface of the ball neck.

Abstract: A carrier arrangement for a rear end of a vehicle, forms a component of a load carrier which can be detachably fastened to the vehicle and projects in front of the rear end of the vehicle during use or forms a component of a coupling device that can be fastened to a rear end of a body of the vehicle, wherein, in the case of the load carrier (300), the carrier arrangement is provided for applying a load and comprises, in the case of the coupling device, a holder for a trailer coupling for attaching a trailer to the vehicle or for a load carrier coupling part for detachably coupling a load carrier to the vehicle. The carrier arrangement has at least one support profile which has a support profile circumferential wall with support profile circumferential wall sections arranged at an angle to each other and/or extend in a curved manner about the longitudinal axis of the support profile and delimit an interior space of the support profile with respect to the longitudinal axis on the circumference.

Abstract: A trailer hitch for a motor vehicle comprises a coupling arm, on one end region of which a coupling body, in particular a coupling ball, is arranged for hitching a trailer or coupling a load carrier to the motor vehicle. At least one support element forming at least part of an outer surface of the coupling body and/or of the coupling arm is provided on the coupling body and/or on the coupling arm, said support element having a greater strength and/or hardness than an in particular metal basic material of a main body of the coupling body or coupling arm on which the support element is arranged or which bears the support element.

Abstract: A carrier arrangement for a rear end of a vehicle, forms a component of a load carrier which can be detachably fastened to the vehicle and projects in front of the rear end of the vehicle during use or forms a component of a coupling device that can be fastened to a rear end of a body of the vehicle, wherein, in the case of the load carrier (300), the carrier arrangement is provided for applying a load and comprises, in the case of the coupling device, a holder for a trailer coupling for attaching a trailer to the vehicle or for a load carrier coupling part for detachably coupling a load carrier to the vehicle. The carrier arrangement has at least one support profile which has a support profile circumferential wall with support profile circumferential wall sections arranged at an angle to each other and/or extend in a curved manner about the longitudinal axis of the support profile and delimit an interior space of the support profile with respect to the longitudinal axis on the circumference.

Abstract: The invention relates to a trailer coupling for a motor vehicle, wherein the trailer coupling has a coupling arm, on the free end region of which a ball neck is formed, on which a coupling ball is arranged for attaching a trailer or coupling a load carrier to the motor vehicle. The coupling ball is spherical on the side thereof facing away from the ball neck and has a spherical segment plane on the side thereof facing the ball neck. Between the spherical segment plane and a portion of the ball neck which has a smaller outer circumference than the spherical segment plane there is arranged a throat portion having a transition contour extending in a concave manner between the ball neck and the spherical segment. The transition contour transitions with a coupling ball transition region into an external contour of the coupling ball, in particular into the spherical segment plane, and transitions with a ball neck transition region into an outer surface of the ball neck.

Abstract: A retractile trailer hitch has a tube shaft fixed on a motor-vehicle frame and an arm having a tubular inner end pivotal on the shaft and an outer ball end. The arm is limitedly axially displaceable on the shaft between locked and unlocked positions. Formations on the frame and on the inner end angularly arrest the arm in its end positions in the locked position of the inner end. The formations are unengageable with each other in the unlocked position of the inner end. A bolt is axially displaceable inside the shaft between a holding position and a freeing position. Balls inside the inner end are coupled to the bolt for axially displacing the arm into the locked position on displacement of the bolt into the holding position and for displacing the arm axially into the unlocked position on displacement of the bolt into the freeing position.

Abstract: A retractile trailer hitch has a tube shaft fixed on a motor-vehicle frame and an arm having a tubular inner end pivotal on the shaft and an outer ball end. The arm is limitedly axially displaceable on the shaft between locked and unlocked positions. Formations on the frame and on the inner end angularly arrest the arm in its end positions in the locked position of the inner end. The formations are unengageable with each other in the unlocked position of the inner end. A bolt is axially displaceable inside the shaft between a holding position and a freeing position. Balls inside the inner end are coupled to the bolt for axially displacing the arm into the locked position on displacement of the bolt into the holding position and for displacing the arm axially into the unlocked position on displacement of the bolt into the freeing position.