Patent 7304773 was granted and assigned to Lite-On on December, 2007 by the United States Patent and Trademark Office.
A locking apparatus for a movable carry module, comprises a controller using to fix the movable carry module of an electric device. The controller has a movable locking shaft normality stretch in the movable carry module, and applies to fix the movable carry module. The electric device supplies the electric power to the controller when receiving the external electric power, and then the locking shaft departs from the movable carry module, such that the movable carry module can move freely.