Patent ID: 6345854
Filing Date: 2002-02-12
Classification: B60P

Abstract:
Mobile living quarters comprising a frame, a fixed structure mounted on said frame defining main living quarters, an expandable structure movable relative to the fixed structure defining an auxiliary living volume, said expandable structure being movable between a retracted position retracted within the main living quarters and a extended position extended from the main living quarters, and at least two actuators for effecting movement between the retracted and extended positions, each of said at least two actuators including an operating member secured to said expandable structure and extending and retracting relative to the main living quarters to effect movement of the expandable structure between the extended and retracted positions, a position signal generating means for generating a position signal that varies in accordance with the position of the operating members, and control means for controlling said actuators in response to said position signals, said control means including synchronizing means for controlling said actuators to assure that the operating members extend and retract at substantially the same rate.