The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1992
Filed:
Mar. 05, 1991
Virgil L Borgmeyer, Meta, MO (US);
Chester F Trice, Jefferson City, MO (US);
Dale A Tempco, Jefferson City, MO (US);
Thomas F Clark, Jefferson City, MO (US);
William J Ritter, Tebbetts, MO (US);
Mari Marisiddaiah, Jefferson City, MO (US);
ABB Power T&D Company, Inc., Blue Bell, PA (US);
Abstract
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.