Patent ID: 7332707

Claim:
A mobile storage system, comprising: at least one movable storage unit; an opposing object selected from the group consisting of a wall, a second mobile storage unit, and a stationary storage unit; an electronic control system determining the location of said at least one movable storage unit and generating signals to move said at least one movable storage unit; sensor assemblies between successive movable storage units or opposing objects, comprising: a first arm with a first end and a second end; a second arm with a first end and a second end, wherein said first end of said first arm is pivotably arranged with respect to said first end of said second arm, said second end of said first arm being arranged to attach to the first movable storage unit and said second end of said second arm being arranged to attach to the second movable storage unit; a first bracket secured to said first arm; a second bracket secured to said second arm and slidably engaged with said first bracket; a sensor within said first bracket sensing relative movement of said second bracket and generating a signal in response thereto and communicating the signal to said electronic control system.