Abb Power Td & Company

Thomas F Clark

Dale A Tempco

Virgil L Borgmeyer

William J Ritter

Chester F Trice

Mari Marisiddaiah

Leo H Huests

A transformer having an integral cabinet with an apparatus for hinging and clamping the cover of the cabinet onto its base is provided. The hinge is formed by an L-shaped member extending from a lip surrounding a planar top formed in the cover. A flange having rearward and downward extending portions extends from the rear wall of the cabinet base. The hinge engages a slot formed in the downward extending portion of the flange. The distance from the hinge to the cover top is less than the distance from the slot to the upper edge of the rear wall on which the cover top rests. Thus, rotation of the cover into the closed position with the hinge engaged causes elastic deformation of the hinge, thereby creating a spring force which clamps the cover onto the base. Elastic deformation in the flange imparts addition clamping force. Sufficient clearance is provided for this elastic deformation by either sloping the rearward extending portion of the flange or sloping the planar top of the cover.

Transformer having an integral cabinet with a clamping cover hinge

An electrical transformer having an integral cabinet with an apparatus for latching and locking the doors of the cabinet. The apparatus is comprised of a three point latch system. The first and second latch points are vertical latch rods which engage sills in the cabinet. The third latch point is a latch plate which rotates with a shaft extending through the first door and to which a handle is attached. In the secured position, the latch plate rotates behind a flange extending from an interior wall, thereby preventing the door from being pulled open. The internal wall divides the cabinet into low and high voltage compartments and forms a structural portion of the cabinet. A bolt extends through the first door, the second door, the latch plate and the flange, thereby preventing the doors from being pulled open and preventing rotation of the handle. A cylinder attached to the first door surrounds the head of the bolt and prevents access thereto. The shackle of a padlock ends through the handle and the cylinder, thereby preventing rotation of the handle and further restricting access to the bolt.

Transformer having an integral cabinet with door latching and locking

Growing community of inventors

Jefferson City, MO, United States of America

Thomas F Clark