Patent ID: 6513825
Filing Date: 2003-02-04
Classification: B62D

Abstract:
A coupling arrangement between a trailer having steering wheels and a pulling vehicle comprising:a first coupling plate on the pulling vehicle, said first plate including an open groove; a second coupling plate of said trailer which is placed on first coupling plate, said first and second plates having low friction surfaces allowing said second plate to rotate on said first plate, a vertical pin fixed to said second coupling plate which seats in a locking position in an end of said groove of said first plate while allowing rotation of said second plate relative to said first coupling plate a movable locking part fixed to said second plate; a spring which moves said movable locking part into a locking position in the groove of said first coupling plate when said plates are rotating in relation to each other to lock said first and second plates against rotation, and a turning means for turning a driving direction of the steering wheels of said trailer, said turning means being associated with said second coupling plate and being arranged such that when the movable locking part is located in the locking position in said groove the driving direction of the wheels of said trailer match a driving direction of the pulling vehicle.