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, 1995
Filed:
Oct. 27, 1993
Michael W Knight, Fuquay-Varina, NC (US);
Square D Company, Palatine, IL (US);
Abstract
A method for manufacturing an electrical switching contactor provides a more effective electro-magnetic pulling force in a smaller sized package. The method includes forming at least two adjacent closed-loop laminated metal cores from a substantially continuous length of magnetic metal, providing a coil bobbin separated into first and second sections through a vertical axis, arranging the first and second sections about a center portion of the closed-loop laminated cores, such that the center potion includes a part of each adjacent closed-loop. A coil is wrapped around the coil bobbin, and the coil bobbin is arranged with respect to the coil to electrically insulate the coil from the adjacent closed-loop laminated cores. The laminated cores are separated into an open-loop 'E'-shaped motor section having a center leg with the coil-wound coil bobbin mounted thereon and an armature section having a set of contact surfaces for mating with contact surfaces on the motor section in response to an electro-magnetic force drawing the armature and motor sections togethers.