Patent ID: 6851698
Filing Date: 2005-02-08
Classification: B60D

Abstract:
1. A coupling device in which the coupling device is arranged to be secured to one of a trailer or a towing vehicle, the coupling device including a body arranged to receive an attachment member on the other of a trailer or towing vehicle, the device including a retainer arranged to retain the attachment member and the device also including an abutment arranged, when in a first position relative to the retainer, to allow movement of the retainer into an operative position, and when in a second position relative to the retainer to prevent movement of the retainer from its operative position in which, in use, the attachment member is retained by the retainer; the coupling device arranged such that when the trailer and towing vehicle are coupled, the retainer is caused to move from an inoperative position to the operative position upon relative movement of the coupling device and the attachment member towards each other, the abutment also being caused to move to the second position in which movement of the retainer from the operative position is prevented upon relative movement of the coupling device and the attachment member towards each other, wherein the abutment is arranged to move to both of its positions under a force exerted by the weight of the abutment about its mounting without the use of a spring.