Patent ID: 6053199
Filing Date: 2000-04-25
Classification: B63B,B63C,Y10T

Abstract:
A tool for effecting entry to a submerged tank comprising in combination:a face plate for confronting the submerged tank;an electromagnetic base integral to the face plate for switched electromagnetic attachment to the submerged tank;a plurality of drill and tapping fixtures for attachment to the face plate to enable mechanical attachment of the face plate to the tank;a cylindrical cutting tool operable from the face plate, the cylindrical tool having a leading abrading edge for cutting from an exterior into an interior of the submerged tank and means for rotation of the cylindrical cutting tool;means for adjustably forcing the cylindrical cutting tool into contact with the exterior of the submerged tanka shroud surrounding the cylindrical cutting tool for permitting flow of fluid between the interior of the submerged tank and the exterior of the submerged tank without direct communication between the submerged tank and surrounding submerging fluid whereby once communication is made with respect to the submerged tank, fluid communicated to the submerged tank must pass through the shroud;a blow out prevention stack fastened overlying the cutting tool; and,a positive displacement pump for communicating to the tank through the face plate and shroud to an interior of the submerged tank for evacuation of the contents of the submerged tank.