Patent ID: 7368674

Claim:
A stop device for an electrical device cell, said electrical device cell having a housing assembly defining an enclosed space, said housing assembly having a front side that may be opened, a pair of rails disposed within said enclosed space, said rails extending in a generally parallel, spaced relation and terminating at said housing assembly front side, a drawout electrical device movably disposed on said rails, said drawout electrical device structured to move between a first, installed position and a second, drawn out position, and a rail extension assembly, said rail extension assembly structured to be coupled to said housing assembly and aligned with said housing assembly rails so that said housing assembly rails and said rail extension assembly form a track extending from within said housing assembly to a point outside said housing assembly, said stop device comprising: a stop member assembly having a stop member, said stop member coupled to said housing assembly adjacent to at least one said housing assembly rail, said stop member structured to move between a first, extended position, wherein said stop member engages said drawout electrical device and prevents said drawout electrical device from moving from said first, installed position to said second, drawn out position, and a second, withdrawn position, wherein said stop member does not engage said drawout electrical device and said drawout electrical device may move from said first, installed position to said second, drawn out position; a permissive member movably coupled to said housing assembly adjacent to said stop member, said permissive member having a first end and a second end; said permissive member first end structured to be engaged by said rail extension assembly; said permissive member second end structured to engage said stop member; said permissive member structured to move between a first position, wherein said permissive member does not effect the position of the stop member, and a second position, wherein said permissive member moves said stop member into said second, withdrawn position; and wherein, when said rail extension assembly is installed on said housing assembly, said rail extension assembly engages said permissive member first end and moves said permissive member to said permissive member second position.