Method of making an ignition coil core

Details Method of making an ignition coil core Method of making an ignition coil core

1982-09-27

1984-11-06

Kozma, Thomas J.

Metal working

Method of mechanical manufacture

Electrical device making

29606, 29609, 336178, 336210, 336216, H01F 4102, H01F 2726

Patent

active

044803770

ABSTRACT:
A laminated core for an ignition coil is made from E shaped and bar shaped laminated members. The E shaped member has equal length outer legs and a shorter center leg with oblique surfaces on the inner free ends of the outer legs. The bar shaped member has oblique surfaces at the ends thereof adapted to engage the oblique surfaces of the first member when the second member is oriented perpendicularly to the center leg of the first member and further to bend the outer legs of the first member outward to generate a restoring spring force as the second member is advanced toward the center leg to reduce the air gap. A coil assembled on the center leg is used to monitor a physical parameter indicative of a desired magnetic or electrical characteristic as the air gap is reduced and the members are fixed together when said characteristic is obtained. The angles formed by the oblique surfaces of the first member with a surface of the center leg are smaller before assembly and no greater after assembly than corresponding angles of the corresponding oblique surfaces of the second member.

REFERENCES:
patent: 1748993 (1930-03-01), Purdy
patent: 1841685 (1932-01-01), Sola
patent: 2220126 (1940-11-01), Six et al.
patent: 2439277 (1948-04-01), Walker
patent: 2712084 (1955-06-01), Bridenbaugh
patent: 3209294 (1965-09-01), Cornell
patent: 3522569 (1970-08-01), Oechsle

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