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:
Mar. 21, 1978
Filed:
Dec. 08, 1976
Ronald H Reed, Versailles, KY (US);
Michael R Harris, Winchester, KY (US);
Square D Company, Park Ridge, IL (US);
Abstract
An apparatus for rejecting an improperly installed plug-on unit, including a circuit controlling device, in an electric power distribution and metering system having a box-like enclosure. A pair of supports are attached to opposing sides within the enclosure with top surfaces substantially parallel to the back of the enclosure so that the plug-on unit can be secured thereto. The circuit controlling device includes a circuit breaker with plug-on jaws, a receptacle and a neutral connector at one end of the plug-on unit which plugs into a jaw of a ground assembly on the back of the enclosure. A plurality of U-shaped interference brackets are welded across the width of the enclosure above the top surface of one support where the end of the plug-on unit containing the neutral connector must be mounted. Each bracket includes a 30.degree. angle on the outermost end of the bracket which slopes inwardly toward the side of the enclosure in direction from top to bottom of the bracket so that the mounting of the plug-on units can only be accomplished in one manner. This manner requires the neutral connector end of the plug-on unit to be inserted at approximately the 30.degree. angle of the brackets onto the top surface of the one support and then pivoted until the breaker jaws mount on the bus bar and the other end of the plug-on unit rests upon the top surface of the other support. Therefore, the neutral connector which is on the pivoted end of the plug-on unit, is plugged into the jaw of the ground assembly a predetermined distance prior to the circuit being energized.