A biased cable mechanism is provided for enabling a secondary connection between a trailer and a vehicle. The biased cable mechanism includes a housing supporting a cable for resilient extensions from the housing. A first end of the cable is fixedly attached to the housing and a second end extends therefrom....http://www.google.com/patents/US6572132?utm_source=gb-gplus-sharePatent US6572132 - Biased cable mechanism for trailer hitches
