Metal working – Method of mechanical manufacture – Electrical device making
Patent
1993-10-27
1995-03-21
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29416, 29609, H01F 4106
Patent
active
053984013
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.
REFERENCES:
patent: 4603314 (1986-07-01), Fukunaga et al.
patent: 5160820 (1992-11-01), Tsujii et al.
Golden Larry I.
Hall Carl E.
Square D Company
Stacey David R.
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