An adjustable hanger includes an arm having a suspension member, and having an opening for receiving a hanger support frame. A plunger is slidably mounted on the arm, and has a corresponding opening for receiving the hanger support frame. The plunger is slidable to an unlocked position in which the opening...http://www.google.es/patents/US4850560?utm_source=gb-gplus-sharePatente US4850560 - Adjustable hanger
