Patent ID: 8141591

Claim:
A plug assembly comprising: a housing; at least one cover coupled to said housing; at least one mounting plate positioned between said housing and said cover for movement relative thereto between an extended position and a retracted position; an actuator engageable with said mounting plates for moving said mounting plates between said extended position and said retracted position in response to a command issued from a controller; and wherein during operation said plug assembly is positioned in a conduit and said mounting plates are moved to said extended position thereby releasably securing said plug assembly at a desired location and sealing said conduit; said at least one mounting plate includes a first mounting plate and a second mounting plate, each being movable in generally opposite directions between said extended position and said retracted position; and said first mounting plate and said second mounting plate are moveably coupled to one another by a rod having a central driving portion disposed between a first threaded portion of said rod and a second threaded portion of said rod, said first and second threaded portions of said rod each being threadably engaged with one of said first and second mounting plates.